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9.a. Request to Adopt the UMore Final Alternative Urban Areawide Review (AUAR)
4 ROSEMOLINT EXECUTIVE SUMMARY CITY COUNCIL City Council Meeting Date: October 15, 2013 AGENDA ITEM: Request to Adopt the UMore Final AGENDA SECTION: Alternative Urban Areawide Review (AUAR) New Business PREPARED BY: Eric Zweber, Senior Planner AGE D��Aii NO. ATTACHMENTS: Resolution; Empire Township Resolution; APPROVED BY: FAUAR Comment Memorandums; FAUAR Comment Letters; UMore Final AUAR �d RECOMMENDED ACTION: Motion to Adopt a Resolution Adopting the Final Alternative Urban Areawide Review (AUAR) for the UMore Study Area. ISSUE The City of Rosemount, Empire Township, and the University of Minnesota are cooperating on an alternative urban areawide review (AUAR) for the 5,000 acre UMore Park. Over the last year, City staff and consultants (along with Empire Township, UMore staff and their consultants) have created the draft UMore AUAR, and the 30 day comment period ended on July 10. The City received nine responses, seven from various agencies and two from citizens. The seven agencies that responded were Dakota County, the Metropolitan Council, the Minnesota Department of Agriculture, Department of Health,Department of Natural Resources,Pollution Control Agency, and Department of Transportation. Neither of the citizens who commented are Rosemount residents. Martha Henderson is a resident of Inver Grove Heights. Ronald Spong is a resident of St. Paul and a former Dakota County Environmental Management employee. Following the revisions based upon the initial 30 day comments, the Final AUAR (FAUAR) was released for a required 10 day comment period from September 2 through September 16. The City received responses from Dakota County, the Metropolitan Council, the Minnesota Department of Agriculture, and the Minnesota Pollution Control Agency. These comments are attached to this Executive Summary and the 30 day draft AUAR comments are included at the end of the FAUAR. October 8 Planning Commission Meeting The Planning Commission reviewed the Final AUAR and the 10 day comments during their meeting on October 8. Commissioner Miller asked if the University's goals for a sustainable community will resolve the Metropolitan Council's concern regarding sanitary sewer flow. Staff responded that the sustainability goals may reduce the overall flow at the completion of development but that would assume that some technology is created that is not the current practice today. The City should not make a commitment now to something when it is unclear what new,undiscovered techniques will occur. Commissioner Husain asked how the AUAR can be effective over the 40 year development schedule,how UMore can develop while mining is occurring for 40 years, and how the county roads (particularly County Road 46) can be expanded in the future. Staff explained that the AUAR will be evaluated every 5 years and updated as needed; that the mining is only on the western third of UMore and it will be phased so reclamation will happen after 15,25,and 40 years;and staff explained that Dakota County has identified the need for County Road 46 to be expanded in their 2030 Comprehensive Plan even without UMore developing. The Planning Commission unanimously recommended adoption of the UMore Final AUAR. 10 Day Final AUAR Comment Period Comments Dakota County Dakota County requested that the City and the County continue to have conversations regarding access spacing, turning movements, and right-of-way dedication. Metropolitan Council The Metropolitan (Met) Council requested that the City continue to participate in the coalition of northern Dakota County cities to discuss groundwater issues. Additionally, the Met Council commented about the different and greater impacts from the FAUAR on the regional sanitary sewer system than was approved in the 2030 Comprehensive Plan. Much of the increase in the sanitary sewer demand is due to the greater density impact from Scenario 1 that is evaluated in the AUAR,but there is still a smaller increase when evaluating the medium range density development evaluated in Scenario 2. Scenario 2 is more consistent with typical suburban development. Staff is continuing to discuss the sanitary sewer issue with the Metropolitan Council and will resolve their concern during the Comprehensive Plan Amendment submittal and updated Comprehensive Plan. Minnesota Department ofAgriculture The Department of Agriculture stated they have no comments. Minnesota Pollution Control Agency The Pollution Control Agency (PCA) provided information that the National Pollution Discharge Elimination System (NPDES) requirements have increased as of August 1,2013 and that the FAUAR will need to meet the new requirement. While this is good information, staff feels it necessary to note that the development of UMore will need to meet all the requirements that are in place at the time development is approved. Approval of the FAUAR in no way"grandfathers" UMore to current regulations. 30 Day Draft AUAR Comment Period Comments Dakota County Dakota County submitted comments regarding transportation and environmental resources. Many of the transportation comments are for the City's use during Comprehensive plan review for UMore. Many of the environmental resources comments will be addressed more specifically during or directly before Preliminary Plat review. There was one comment regarding greenways that was already addressed in the AUAR. Metropolitan Council The Met Council provided comments regarding land use forecasts,water supply, surface water management,wastewater, and transportation. The land use forecasts, surface water and water supply comments are issues in which the City currently has on-going involvement with the Met Council or other agencies. Transportation comments are similar to those provided by Dakota County and MnDOT. 2 Staff has discussed wastewater planning with Met Council's staff. In the foreseeable future, Rosemount and UMore wastewater will flow to the Empire Wastewater plant. Met Council staff stated that their long range plans include the possibility of retrofitting the Rosemount wastewater treatment plant to serve east (and possibly central) Rosemount. Minnesota Department of Agriculture The Department of Agriculture stated they have no comments. Minnesota Department of Health The Department of Health provided broad comment topics (including affordable housing, energy consumption,health impact assessments and physical activity) and again mentioned the groundwater comments provided during gravel mining permitting. Staff provided an update on the gravel mining permit,but did not include those permit conditions in the AUAR because the AUAR is based on mining activity being completed and the lands reclaimed. Minnesota Department of Natural Resources The DNR asks that prior to development of UMore their databases be reviewed and also reminded the City what permits are required from the DNR. Minnesota Pollution Control Agency The PCA comments included discussion of surface water and remediation programs. Staff responded that the City's stormwater regulations reduce run-off as compared to the current condition. Several comments about site remediation are duly noted and will be addressed more completely during the site development process. Minnesota Department of Transportation The MnDOT comments are similar to the Dakota County and Met Council comments. All the comments included references to the regional traffic model. The traffic information from the AUAR will be added to the regional model during the decennial Comprehensive Plan creation. Ronald Spong Ronald Spong is a St. Paul resident and a former Dakota County Environmental Management employee. Many of his comments are regarding contamination at the UMore property. His concerns are addressed through the comments provided previously for Dakota County,Metropolitan Council, Department of Health and the Pollution Control Agency. Martha Henderson Martha Henderson is an Inver Grove Heights resident who attended the AUAR Open House and provided a comment letter requesting that no development occur on the UMore property and that the area should be returned to its natural state for wildlife habitat. Staff responded that about 1,000 acres (approximately 20%) of the UMore property is designated for open space and that Vermillion Highlands and Whitetail Woods Park is located directly south of UMore. Empire Township During their October 8 Town Board meeting, Empire Township adopted a resolution recommending that the City of Rosemount adopt the FAUAR. A copy of the resolution is attached to this Executive Summary. RECOMMENDATION The Planning Commission and staff recommend approval of the FAUAR. 3 CITY OF ROSEMOUNT DAKOTA COUNTY, MINNESOTA RESOLUTION 2013 - A RESOLUTION ADOPTING THE FINAL ALTERNATIVE URBAN AREAWIDE REVIEW (AUAR) FOR THE UMORE STUDY AREA WHEREAS, an AUAR has been completed for the project pursuant to Minnesota Rules 4410 and identifies and assesses the environmental impacts and mitigation measures associated with the UMore development area;and WHEREAS, the UMore development area is located on approximately 4,900 acres in the southern portion of the City of Rosemount and northern portion of Empire Township and is generally bounded by CSAH 42 on the north,Biscayne Avenue on the west, 170th Street on the south, and west of TH52 on the east;and; WHEREAS, four proposed development scenarios have been identified to be evaluated as part of the AUAR as follows: Scenario 1: Residential, commercial,industrial,mixed-use, and park/open spaces uses organized around a neighborhood,village, or regional center. This scenario incorporates the maximum density within the residential ranges. Anticipates 35,000 people as future population and 18,000 jobs. Scenario 2: Similar to Scenario 1 with residential, commercial,industrial,mixed-use, and park/open spaces uses organized around a neighborhood,village, or regional center. This scenarios incorporates middle density residential ranges. Anticipates 25,000 people as future population and 18,000 jobs. Scenario 3: Residential, commercial,industrial,mixed-use, and park/open spaces uses organized around a neighborhood,village, or regional center. Incorporates more office/business park and light industrial and reduces residential. Anticipates 31,500 people as future population and 24,500 jobs. Scenario 4: This scenario is in conformance with the City and Township Comprehensive Plans. WHEREAS, the UMore Study Area AUAR was distributed for one 30-day and one 10-day comment period; and WHEREAS, comments received on the AUAR have generated information adequate to determine mitigation measures associated with the potential development in this area; and WHEREAS, the comments received are included in the public record for the AUAR; and WHEREAS, no objections were received to the AUAR; and WHEREAS, development in the UMore Study Area is expected to comply with all the City, Township, and review agency standards as well as the mitigation measures outlined in the AUAR. RESOLUTION 2013- NOW,THEREFORE, BE IT RESOLVED, the Council of the City of Rosemount hereby adopts the UMore Alternative Urban Areawide Review dated August 21, 2013. ADOPTED this 15th day of October, 2013,by the City Council of the City of Rosemount. William H. Droste, Mayor ATTEST: Amy Domeier, City Clerk 2 RESOLUTION 2013-01 EMPIRE TOWNSHIP DAKOTA COUNTY,MINNESOTA A RESOLUTION RECOMMENDING RELEASE OF THE UNIVERSITY OF MINNESOTA UMORE PARK ALTERNATIVE URBAN AREAWIDE REVIEW FOR DISTRIBUTION AND FORMAL COMMENT WHEREAS, the University of Minnesota's Board of Regents approved a concept master plan for UMore Park for the residential, commercial, industrial, institutional and recreational development of UMore Park; and WHEREAS,the University of Minnesota's 5000-acre UMore Park lies within Empire Township ("Township")and the City of Rosemount("City"); and WHEREAS, development of UMore Park requires environmental review under Minnesota Rules, Chapter 4410; and WHEREAS, the preferred method of the University, the City and the Township for environmental review of UMore Park is to prepare an Alternative Urban Areawide Review ("AUAR"), as provided in Minnesota Rules, Chapter 4410; and WHEREAS, Minnesota Rules, Chapter 4410 requires that only one unit of government may act as the Responsible Governmental Unit("RGU")in conducting an AUAR; and WHEREAS, the Township and the City entered a Joint Powers Agreement ("JPA") in 2011 to confer RGU authority on behalf of the Township to the City and to foster cooperative planning and joint environmental review in furtherance of the protection of the public health, safety and welfare of each of the communities; and WHEREAS, Township representatives have regularly participated with the City and the University in the development of the UMore Park AUAR; and WHEREAS,a draft AUAR has been completed and is available for publication, distribution and review; and WHEREAS, the Township Planning Commission has reviewed the draft AUAR and has recommended its release for public comment, according to Minnesota Rules, Chapter 4410. NOW, THEREFORE BE IT RESOLVED, the Board of Supervisors of Empire Township recommends that the City Council of the City of Rosemount accept the draft UMore Park AUAR and authorize its release,publication, and distribution for review and public comment. Adopted this 14th day of May,2013. Terry of s, Chair ATTEST: • Kathleen B. Krippner, rk-Treasurer A WSBInfrastructure• Engineering• Planning•Construction 701 Xenia Avenue South Suite#300 &Associates,Inc. Minneapolis,MN 55416 Tel: 763 541-4800 Fax: 763 541-1700 Memorandum To: Eric Zweber, City of Rosemount From: Andi Moffatt, WSB&Associates Date: September 23,2013 Re: UMore Study Area Final AUAR City of Rosemount,Minnesota WSB Project No. 1992-00 The item for the City Council to consider is the adoption of the Final Alternative Urban Areawide Review (AUAR) for the UMore Study Area. The Final AUAR evaluates potential environmental impacts associated with development of the 4,900 acre study area. Three different development scenarios and the existing comprehensive plan were evaluated for potential environmental impacts within the AUAR. The scenarios evaluate differing amounts of commercial, light-industrial, residential land uses, and greenway uses. As part of the AUAR development process,the Draft UMore AUAR was submitted for a 30- day public comment period,which ended on July 10, 2013. One public meeting was held during the comment period to inform the public of the process, to answer questions, and to obtain public input. Comments were received from various agencies and members of the public. Responses to the comments were prepared and included in the Final AUAR. The Final AUAR and the responses to comments were then submitted for the required 10- day comment period. This second, 10-day comment period ended September 16, 2013. Dakota County, Department of Agriculture, Metropolitan Council, and Pollution Control Agency sent correspondence. A brief summary of the comments on the Final AUAR are outlined below: • The Department of Agriculture had no additional comments. • Dakota County indicated additional coordination will be needed between the City and County regarding traffic and access spacing. • The Pollution Control Agency indicated an NPDES permit would be needed for any projects. g:lauar umorelfinal auar documentslmemo-092313-ezweber.docx September23,2013 Page 2 of 2 • The Metropolitan Council acknowledged the additional coordination regarding groundwater modeling and use between the Coalition of Northern Dakota Cities. They also restated that coordination for transportation improvement will need to be undertaken. Met Council also indicated that the Final AUAR did not address their wastewater concerns. After the first 30-day comment period comments,we followed up extensively with the Met Council to address their comments regarding this issue. We mutually determined that the responses to comments we provided would be sufficient to address their comments. The responses to comments were provided in the Final AUAR in Appendix F (although the appendix was mistakenly not labeled). The Met Council did not see these during the second, 10-day review. We have followed up with the Met Council since these comments and are confirming agreement on the original approach that both parties agreed to. None of the agencies objected to the Final AUAR. Therefore,the City can move forward and consider adoption of the Final AUAR. The item before the City Council is to consider adopting the Final AUAR. By adopting the Final AUAR,any redevelopment that is proposed within the study area will need to meet the mitigation measures outlined in the document as well as be within the density analyzed in the AUAR. If the density is exceeded or mitigation measures are not met, the AUAR will need to be updated. Further, Minnesota Rules requires that the AUAR be updated every five years until redevelopment within the study area is approved. It should be noted that adopting the Final AUAR does not authorize any redevelopment nor does it indicate the City is selecting a specific development scenario. If you have any questions, please feel free to call me at (763) 287-7196. C O U N T Y• •Physical Development Division September 16,2013 Dakota County Western Service Center Eric Zweber 14955 Galaxie Avenue City of Rosemount Apple Valley,MN 55124-8579 2875 145th Street West 952.891.7000 Rosemount,MN 55068 Fax 952.891.7031 www,dakotacountv,us Environmental Resources Re: Dakota County Comments — Final Alternative Urban Areawide Review - UMORE Study Land Conservation Area. Groundwater Protection Surface Water Waste Regulation Mr.Zweber, Environmental Initiatives Office of Planning Y Thank you for the opportunity ortunit to comment on the Final Alternative Urban Areawide Review for the UMORE Study Area. Operations Management Facilities Management Dakota County staff have reviewed the final AUAR,and have the following comments as the Fleet Management g they Parks relate to adopted County plans and regulations. Transportation Staff from Dakota County and Rosemount should have a follow up discussion regarding Highways access spacing,turning movements,and right of way dedication for County Highways Surveyor's Office within the UMORE property.Y S ecifiicall Y.while the County and the City are In general Transit Office agreement about the need to use h mile spacing along CSAH 42,it appears that there may be an additional full access intersection shown on figure 21-10B that was not identified In the CSAH 42 study.Similarly,the anticipated ROW needed for Blaine Avenue (CSAH 71)differs between the County's Plat Needs Map,and figure 21-10B from the UMORE AUAR.While it is recognized that the development at UMORE will be phased over a long period of time,it is suggested that the County and City meet to reach agreement on long-range plans for these highways. Thank you again for the opportunity to review. If you have questions or concerns regarding Dakota County's comments, please contact Kurt Chatfield in the County Office of Planning and Analysis by phone at 952-891-7022 or by email at kurt.chatfield @co.dakota.mn.us. • e Al Erin Stwora Assistant Director,Physical Development CC: Commissioner Mike Slavik,District 1 Commissioner Nancy Schouweller,District 4 Brandt Richardson,County Administrator Cy Panted an recyded paper with 3D%post-consumer w,gn AN EQUAL omcflfE,nm E•iorEm tMetropolitan Council September 13, 2013 Mr. Eric Zweber,AICP 2875 145th Street West Rosemount, MN 55068 RE: UMore Park Draft Alternative Urban Areawide Review Metropolitan Council Review File No.21138-2 Metropolitan Council District 15,Steven Chavez Dear Mr.Zweber: The Metropolitan Council received the UMore Park Final Alternative Urban Areawide Review(Final AUAR)and completed its review to determine its accuracy and completeness in addressing regional concerns. Council Staff has concluded that the Final AUAR was complete and accurate with respect to regional concerns and raised no major issues of consistency with Council policies but find that the Final AUAR does not address the wastewater issues raised during the draft AUAR process. Council staff offers the following comments for your consideration: Item 13 Water Supply—The response in the Final AUAR was that the City and Empire Township will continue to work with Metropolitan Council staff as groundwater modeling is refined and alternate water supply sources are evaluated. The Council looks forward to working with the City and Township as part of the Coalition of Northern Dakota Cities to develop and finalize a formal agreement on future groundwater issues. Item 18 Wastewater—The Final AUAR does not address the concerns raised during the Metropolitan Council review of the draft document. Therefore,the final AUAR and the wastewater related information may represent a potential system impact when the site is fully developed. The AUAR redefines the individual sanitary sewer districts within the project area from those previously identified in the City's 2008 Comprehensive Plan Update.The final AUAR currently calls for the area to be served through four(4)primary districts the; East District,Central District, Northwest District,and the Southwest District,with each having its own separate connection to the regional wastewater system.The regional interceptor system that provides service to this area of the City was designed and constructed with specific capacities. During its review of the City's 2008 Update,the Council met with the City to discuss the system capacity within the regional system and the City committed to finalizing a wastewater plan that would be consistent with the assigned capacities of the regional system. The service area map included in the AUAR shows larger areas being served through the upstream portion of the regional system where system capacity is less.This represents a potential system impact if long term flows from these areas exceed system capacity. That portion of the gravity interceptor downstream of L75(Biscayne Avenue)has sufficient capacity to serve the City including the AUAR project area. The City will need to update and receive Metropolitan Council approval on its Comprehensive Plan, including its Tier II Comprehensive Sewer Plan, prior to the installation of any sanitary sewer www metro cou n ci 1.org 390 Robert Street North • St. Paul,MN 55101-1805 • (651)602-1000 • Fax(651)602-1550 • TTY(651)291-0904 An Equal Opportunttj Employer improvements within the AUAR project area.The approved Tier II Comprehensive Sewer Plan will need to reflect that long term cumulative wastewater projections from each service district connection point is consistent with the assigned regional capacity.This will more than likely require that portions of the East,Central,and Northwest service district be directed west toward that portion of the system within Biscayne Avenue. Item 21—Traffic Forecasts and Transportation Mitigation CSAH 42 and TH 52 are principal arterials and hence part of the metropolitan highway system. The 2030 Transportation Policy Plan does not include any of the described improvements to these metropolitan highways. Construction or reconstruction of the interchanges and expansion of CR 42 would need controlled access approval from the Metropolitan Council. The City should continue to coordinate with MnDOT and the Metropolitan Council regarding any proposed changes to the metropolitan highways system. The Council will take no formal action on the Final AUAR. If you have any questions or need further information,please contact Patrick Boylan,Principal Reviewer, at 651-602-1438. Sincerely, deq LisaB-th Barajas,M.nager Local Planning Assistance cc: Julie Monson,MHFA Tod Sherman,Development Reviews Coordinator,MnDOT-Metro Division Steven Chavez,Metropolitan Council District 15 Wendy Wulff,Metropolitan Council District 16 Keith Buttleman,Environmental Services Patrick Boylan,Sector Representative Raya Esmaeili,Reviews Coordinator N:ICommDevILPAICommunities1RosemountlLetterslRosemount 2013 Final AUAR 21138-2 UMore Park.docx From: Zweber.Eric To: Andi Moffatt;Hanson. Kathie Subject: FW:UMORE AUAR Date: Tuesday,September 03,2013 3:24:00 PM From: Balk, Becky (MDA) [mailto:becky.balk @state.mn.us] Sent: Tuesday, September 03, 2013 2:21 PM To: Zweber, Eric Subject: UMORE AUAR Hi Eric, I've reviewed the Draft AUAR for UMORE and MDA does not have any comments. Thank you. Becky Back MN DEPARTMENT OF AGRICULTURE Agricultural Marketing & Development Division 625 Robert Street North I St Paul,MN,55155 651-201-6369(Direct Line) I Decky.Balk@@state.mn.us Minnesota Pollution Control Agency 520 Lafayette Road North I St.Paul,Minnesota 55155-4194 1 651-296-6300 800-657-3864 1 651-282-5332 TTY I www.pca.state.mn.us I Equal Opportunity Employer September 13,2013 Mr. Eric Zweber,Senior Planner City of Rosemount 2875 145th Street West Rosemount, MN 55068 Re: UMore Study Area Final Alternative Urban Areawide Review Dear Mr.Zweber: Thank you for the opportunity to review and comment on the Final Alternative Urban Areawide Review (Draft AUAR)for the UMore Study Area project(Project) located in the city of Rosemount, Minnesota. The Project consists of a 4,900 acre mixed use development. Regarding matters for which the Minnesota Pollution Control Agency(MPCA) has regulatory responsibility and other interests,the MPCA staff has the following comments for your consideration. • The EAW mentions that the project will comply with requirements of Phase II of the National Pollutant Discharge Elimination System (NPDES)Construction Stormwater permit. Please note that this project, if approved,will require coverage under the new permit that became official on August 1,2013.The new permit has significantly more stringent requirements for permanent stormwater treatment than the current permit in situations regulated under Appendix A of the permit(within a mile of special or impaired waters). It also affects projects not regulated under Appendix A(projects outside of the one mile radius from impaired or special waters),for which there will now be required treatment for 1 inch of runoff, as opposed to 0.5 inches, per acre of new impervious surface. Information on the new Construction Stormwater permit is available on the MPCA website at: htto://www.pca.state.mn.us/v3dgf96.Questions regarding Construction Stormwater Permit requirements should be directed to Roberta Getman at 507-206-2629. We appreciate the opportunity to review this Project. Please be aware that this letter does not constitute approval by the MPCA of any or all elements of the Project for the purpose of pending or future permit action(s) by the MPCA. Ultimately, it is the responsibility of the Project proposer to secure any required permits and to comply with any requisite permit conditions. If you have any questions concerning our review of this Final AUAR, please contact me at 651-757-2508. Sincerely, la∎t jVX VVVv1 /✓ Karen Kromar Planner Principal Environmental Review Unit Resource Management and Assistance Division KK:bt cc: Craig Affeldt, MPCA, St. Paul Doug Wetzstein, MPCA,St. Paul Roberta Getman, MPCA, Rochester IIIIMIIIIIME August 21, 2013 4ROSEMOLINT ALTERNATIVE MINNESOTA URBAN AREAWIDE City of Rosemount Review 2875145th Street West • Rosemount,MN 55068-4997 (651)423-4411 Umore Study Area Rosemount, Minnesota Final AUAR WSBProjectNo. 1829-06 1,..,..., 1"*„..7"*"", ' , : e , '4,4 o \ ' .C7**1*** '' * ,, 411 may , iiio, ., ,,,,,,,,,4.,., } 4, • .,i 0.' # �aa,��s_•- FINAL ALTERNATIVE URBAN AREAWIDE REVIEW UMORE STUDY AREA Prepared For: City of Rosemount August 21,2013 TABLE OF CONTENTS TITLE PAGE I. EXECUTIVE SUMMARY 1 I.i. INTRODUCTION/BACKGROUND 1 I.ii. INFRASTRUCTURE PLANNED TO SERVE THE DEVELOPMENT 2 I.iii. ANTICIPATED DEVELOPMENT STAGING 3 II. SUMMARY OF MITIGATION MEASURES 4 II.i. Fish,Wildlife,and Ecologically Sensitive Resources 4 Il.ii. Water Use Mitigation Plan 4 II.iii. Erosion and Sedimentation Mitigation Plan 5 Il.iv. Water Quantity and Quality Mitigation Plan 5 II.v. Wastewater Mitigation Plan 7 II.vi. Geologic Hazards and Soil Conditions Mitigation Plan 7 II.vii. Transportation Mitigation Plan 8 II.viii. Noise Mitigation Plan 9 II.ix. Nearby Resources Mitigation Plan 9 II.x. Visual Impact Mitigation Plan 9 II.xi. Compatibility with Land Use Regulations Mitigation Plan 9 III. UMORE STUDY AREA AUAR 11 1) PROJECT TITLE 11 2) PROPOSER 11 3) RGU 11 4) REASON FOR EAW PREPARATION 11 5) PROJECT LOCATION 11 6) DESCRIPTION 11 7) PROJECT MAGNITUDE 16 8) PERMITS AND APPROVALS 17 9) LAND USE 19 10) COVER TYPES 32 11) FISH,WILDLIFE,AND ECOLOGICALLY SENSITIVE RESOURCES 33 12) PHYSICAL IMPACTS ON WATER RESOURCES. 39 13) WATER USE. 40 14) WATER-RELATED LAND USE MANAGEMENT DISTRICTS 53 15) WATER SURFACE USE 54 16) EROSION AND SEDIMENTATION 54 17) WATER QUALITY—SURFACE WATER RUNOFF 55 18) WATER QUALITY—WASTEWATER 61 19) GEOLOGIC HAZARDS AND SOIL CONDITIONS 72 20) SOLID WASTES, HAZARDOUS WASTES,STORAGE TANKS 77 21) TRAFFIC 80 22) VEHICLE-RELATED AIR EMISSIONS 94 City of Rosemount Table of Contents Final Alternative Urban Areawide Review August 21,2013 TABLE OF CONTENTS 23) STATIONARY SOURCE AIR EMISSIONS 99 24) ODORS, NOISE,AND DUST 99 25) NEARBY RESOURCES 104 26) VISUAL IMPACTS 109 27) COMPATIBILITY WITH PLANS AND LAND USE REGULATIONS 110 28) IMPACT ON INFRASTRUCTURE AND PUBLIC SERVICES 113 29) CUMULATIVE IMPACTS 115 30) OTHER POTENTIAL ENVIRONMENTAL IMPACTS 116 LIST OF FIGURES Figure 5-1: General Location Map Figure 5-2: USGS Map Figure 5-3: Aerial Photo Figure 6-1: Scenario 1 Figure 6-2: Scenario 2 Figure 6-3: Scenario 3 Figure 6-4: Scenario 4 Figure 9-1: Existing Land Use Figure 10-1: Land Cover Figure 10-2: Land Cover over Scenario 1 Figure 10-3: Land Cover over Scenario 2 Figure 10-4: Land Cover over Scenario 3 Figure 11-1: Ecological Resources Figure 11-2: Rosemount Natural Area Identification Map Figure 13-1: County Well Index Figure 13-2: Municipal Wells and Drinking Water Supply Management Area Figure 13-3 Scenario 1 Water Analysis Figure 13-4: Scenario 2 Water Analysis Figure 13-5: Scenario 3 Water Analysis Figure 14-1: FEMA Floodplain Figure 16-1: Highly Erodible Land Figure 17-1: Subwatershed Map Figure 18-1: MCES Interceptor Location Figure 18-2: Sewer District and MCES Connections Figure 18-3: Scenario 1 Wastewater Analysis Figure 18-4: Scenario 2 Wastewater Analysis Figure 18-5: Scenario 3 Wastewater Analysis Figure 19-1: Soil Types Figure 19-2: Hydric Soils Figure 19-3: Suitability for Dwellings with Basements Figure 19-4: Depth to Bedrock Figure 19-5 Groundwater Sensitivity Figure 19-6: Karst Features Figure 21-1A: Existing Traffic Volumes and Lane Geometry Figure 21-1B: Existing Traffic Volumes and Lane Geometry City of Rosemount Table of Contents Final Alternative Urban Areawide Review August 21,2013 TABLE OF CONTENTS Figure 21-2: Future Roadway Functional Class Figure 21-3: Traffic Analysis Zones/Major Roadway Network Figure 21-4: Development Traffic Distribution Figure 21-5A: 2030 No Build Traffic Volumes Figure 21-5B: 2030 No Build Traffic Volumes Figure 21-6A: Scenario 1 Full Development Turning Movements Figure 21-6B: Scenario 1 Full Development Turning Movements Figure 21-7A: Scenario 2 Full Development Turning Movements Figure 21-7B: Scenario 2 Full Development Turning Movements Figure 21-8A: Scenario 3 Full Development Turning Movements Figure 21-8B: Scenario 3 Full Development Turning Movements Figure 21-9: Future Projected Daily Traffic Volumes Figure 21-10A: No Build Lane and Traffic Control Needs Figure 21-10B: Build Lane and Traffic Control Needs Figure 24-1: Noise Model Receptors Figure 25-1: Sensitive Resources Figure 25-2: UMore Park Soils Figure 25-3: Parks, Recreation Areas and Trails LIST OF TABLES Table 6-1 Scenario 1 Table 6-2 Scenario 2 Table 6-3 Scenario 3 Table 7-1 Composite Scenarios Table Table 8-1 List of Permits and Approvals Table 10-1 Land Cover Table 13-1 Existing Average Day Water Usage and Maximum Day Water Usage for Rosemount's Water System Table 13-2 Future water demand for Scenario 1 Table 13-3 Comparison of supply and storage included in CWP and Scenario 1. Table 13-4 Future water demands for Scenario 2 Table 13-5 Comparison of supply and storage included in CWP and Scenario 2. Table 13-6 Future water demands for Scenario 3 Table 13-7 Comparison of supply and storage included in CWP and Scenario 3. Table 17-1 Existing and Proposed Runoff Volumes Table 17-2 Total Suspended Solids and Total Phosphorus Loads Table 18-1 Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading for the City of Rosemount Table 18-2 Estimated Average Day Wastewater Flow from Scenario 1 Table 18-3 Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 1 Table 18-4 Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Scenario 1 Table 18-5 Estimated Average Day Wastewater Flow from Scenario 2 City of Rosemount Table of Contents Final Alternative Urban Areawide Review August 21,2013 TABLE OF CONTENTS Table 18-6 Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 2 Table 18-7 Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Development Scenario 2 Table 18-8 Estimated Average Day Wastewater Flow from Scenario Table 18-9 Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 3 Table 18-10 Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Scenario 3 Table 19-1 Soil Types Table 20.1 Estimated MSW Quantities Table 21-2 Roadway Segment Traffic Capacity Thresholds Table 21-3 Existing(2012) Roadway Segment Level of Congestion Table 21-4 Development Area Traffic Generation Table 21-5 Future 2030 Roadway Segment Level of Congestion Table 24-1 Decibel Levels of Common Noise Sources Table 24-2 MPCA State Noise Standards—Hourly A-Weighted Sound Levels Table 24-3 General Description of Modeled Receptor Locations. Table 24-4 Traffic Noise Modeling Results Table 25-1 Nearby Resources—Previously Inventoried Architectural History Properties LIST OF APPENDICES Appendix A: Figures Appendix B: UMore Master Plan Information Appendix C: Peak Hour Traffic Operations Analysis Appendix D: Summary of Public Involvement Process Appendix E: References Appendix F: Comments and Responses to Comments City of Rosemount Table of Contents Final Alternative Urban Areawide Review August 21,2013 I. EXECUTIVE SUMMARY Li. INTRODUCTION/BACKGROUND The UMore Study Area is approximately 4,900 acres located in the southern portion of the City of Rosemount and the northern portion of Empire Township(Appendix A- Figure 5-1 to 5-3). Both governmental units have worked together along with the University of Minnesota in the preparation of this AUAR with Rosemount assuming the Responsible Government Unit role. A summary of the public involvement process that was completed to prepare the AUAR is included in Appendix D. The UMore Park AUAR includes the review of four development scenarios. Scenarios 1 through 3 are generally consistent with known plans of the primary owner of the property,the University of Minnesota. Plans for the property have been shaped by a number of policy, strategic and physical planning initiatives undertaken by the University.Additional background information on these actions can be found in Appendix B. It is currently anticipated that most, if not all of development within the study are will be undertaken by private entities, not the University of Minnesota, pursuant to land sales or ground leases. Scenarios 1 through 3 represent interpretations of the University's Concept Master Plan for UMore Park that was adopted by the Board of Regents on December 12,2008. Scenario 4 is consistent with the comprehensive plans of the City of Rosemount and Empire Township. A description of each scenario's type and intensity of development follows: Scenario 1(Figure 6-1) Scenario 1 contains residential,commercial, industrial, mixed-use,and park/open spaces uses organized around a neighborhood,village,community or regional center. Long-term,the plan accommodates a transit connection between the three higher density center areas and points north of the UMore site. An extensive planned system of greenways and open space meanders through the site accommodating active and passive recreational uses, preservation of natural features and establishing corridors for wildlife movement. On the west side of the site,development will surround a new lake that will be an amenity resulting from gravel mining operations that are scheduled to commence in 2013. The gravel mining area was the subject of an Environmental Impact Statement. The Record of Decision for the UMore Park Sand and Gravel Resources Project EIS was published in November of 2010. County State Aid Highway(CSAH)46 bisects the site in an east/west direction forming the boundary between the City of Rosemount and Empire Township. Akron Avenue and Blaine Avenue will be extended through the site and will be transferred to Dakota County following construction and connection to the overall Dakota County highway system. In the north,the UMore Park property surrounds the Dakota County Technical College(DCTC)which abuts County State Aid Highway(CSAH)42. Residential uses occur in four different density classifications ranging from low density(1-3.5 units/acre)to high density(12—24 units per acre). Scenario 1 uses the maximum density within the residential ranges to determine population. Neighborhood,Village,Community and Regional Centers contain varying mixes of residential and non-residential uses. Employment City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 1 land uses,which are generally concentrated in the eastern portion of the site, include office/business park and light industrial uses. Scenario 1 accommodates a future population of approximately 35,000 people and about 18,000 jobs. Scenario 2(Figure 6-2) The quantities and locations of future land uses shown on Scenario 2 are identical to those shown on Scenario 1. Scenario 2 allows testing of an alternative that has residential densities that are more in line with the traditional densities in suburban communities like the City of Rosemount. For this Scenario,the middle of the residential density ranges have been used for the low density, low-medium density, medium density and high density categories. As a result, Scenario 2 projects a future population of approximately 25,000 people and about 18,000 jobs. Scenario 3(Figure 6-3) Scenario 3 is intended to examine the implications of a future land use pattern that includes expanded employment opportunities. With the exception of areas lying between Barbara and Blaine Avenues,the land use pattern shown on Scenario 3 is identical to that shown on Scenarios 1 and 2. Scenario 3 replaces largely residential uses lying west of Blaine Avenue with office/business park uses and light industrial. The maximum residential densities are used,the same as used in Scenario 1. As a result,Scenario 3 accommodates a future population of approximately 31,500 people and about 24,500 jobs. Scenario 4—Existing Comprehensive Plans Scenario 4 depicts the current comprehensive plans of both the City of Rosemount and Empire Township. Both comprehensive plans recognize UMore Park and reference future growth and development. Rosemount's plan categorizes the UMore site as Agricultural Research (AGR). The plan states, "This land use designation is used solely for the UMore Park property that is owned and operated by the University of Minnesota. It is anticipated that, after the UMore Park Master Plan is created and adopted,a major Comprehensive Plan amendment will be conducted to re-designate the land to its appropriate land use category." The Empire Township Comprehensive Plan categorizes the UMore Park property as University of MN (UMORE). The property is also designated as being in a Mining Overlay Area. The plan states, "The University of Minnesota Outreach, Research and Education Park(UMore Park) consisted of nearly 4,530 acres in Empire Township. Approximately 2,830 acres of land has become part of the Vermillion Highlands Wildlife Management Area (WMA)jointly operated by the University and the DNR for agricultural research and WMA usage. The remaining 1700 acres of UMore Park is being planned for mineral extraction and eventual urbanization. The University has completed a two-year long study of potential urban uses in Empire and the City of Rosemount(additional 2900 acres). The UMore Property in Empire is also included in the Mineral Extraction Overlay area." I.ii. INFRASTRUCTURE PLANNED TO SERVE THE DEVELOPMENT If future development occurs as proposed under Scenarios 1,2 or 3, new utilities, roads and other infrastructure will be needed to serve the AUAR area. Comprehensive Plans and this AUAR identify the infrastructure needed to support the varying levels of development identified in the Scenarios. Infrastructure needs are discussed in greater detail under the response to AUAR Items: 13—Water Use, 17—Water Quality: Surface Water Runoff, 18—Water Quality: City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 2 Wastewaters and 21—Traffic. Item 28—Infrastructure and Public Services includes a summary of new infrastructure that would be needed and where appropriate, provides comparisons between the scenarios. I.iii. ANTICIPATED DEVELOPMENT STAGING The development of UMore Park is expected to occur over the next 30 to 40 years depending on market conditions and overall development demand. The timing of development will also be influenced by the timing of construction for required infrastructure improvements both locally and regionally. The future availability of transit may also influence the timing of the full build- out of the UMore Park property. In general, development is anticipated to be phased from the north in Rosemount along County State Aid Highway(CSAH)42 to the south extending into Empire Township. The timing of development in the western portion of the UMore Park property will be influenced by the timing of the extraction of minerals in the area and the restoration of the property to accommodate urban development. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 3 II. SUMMARY OF MITIGATION MEASURES Pursuant to Minnesota Rules, mitigation measures have been developed as part of the AUAR. These measures would apply to any proposed development that may occur over time within the study area. II.i. Fish,Wildlife,and Ecologically Sensitive Resources A. Wetlands will need to be delineated in conformance with the Wetland Conservation Act as part of the development process. Depending on the location of the wetlands,either the City of Rosemount or Empire Township will review and verify the wetland delineation. B. Wetland impact is anticipated to be minimized to the maximum extent practical and feasible throughout the review area. If wetland impacts are proposed,wetland mitigation will be required of the project proposer pursuant to current wetland regulations and City or Township requirements. C. The City of Rosemount and Empire Township will require buffers around wetlands at a width dependent upon the wetland's management classification, per their respective ordinances. D. Storm water management features should incorporate native plantings of grasses,trees,and shrubs. E. A loggerhead shrike survey is recommended by the DNR as part of a development project if disturbance would be planned during the nesting season (nesting season is generally April through July). The DNR will need to be contacted before any survey work is completed. F. While ideally suited habitat for Blanding's turtles is not apparent within the study area,they have been noted near the study area and some habitat in the area could be marginally suitable. Development projects should take into consideration the use of oversized culverts, surmountable curbs,and revegetation with native species. G. Development plans for the northeastern corner of the site will consider incorporating the oak woodland that has been identified on the County Biological Survey as open space to protect or enhance this habitat to the extent practical. H. Development plans will consider incorporating the existing or remaining wildlife habitat areas within the Regionally Significant Ecological Areas(RSEA) and other areas within the site as open space to the extent practical. However, depending on environmental remediation that may be required,disturbance of these areas may be necessary. I. Tree removal within the study area that occurs as part of development will need to meet the requirements of the City's or Township's Tree Preservation Ordinance. II.ii. Water Use Mitigation Plan A. Extend trunk water main services as shown in Figures 13-3 through 13-5 consistent with the CWP. For Scenario 1,an additional 16"trunk main may be extended from the intersection of Akron Avenue and CSAH 42 to approximately 2,600 feet east of the intersection of CSAH 42 and Blaine Avenue (Figure 13-3—Alt. 1). City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 4 B. 6-8 municipal wells are recommended as a result of this development,with up to 2 of the wells being in addition to what was planned as part of the CWP. For Scenario 1,one well may be located within the study area depending upon the trunk water mains extended to the development(see Figure 13-3—Alt.2). Well fields have been preliminarily allocated to the north and to the east of the study area close to the future water treatment plants, in accordance with the CWP. C. 2,750,000 to 3,500,000 gallons of water system storage is recommended as a result of this development,with up to 700,000 gallons being in addition to what was planned as part of the City's CWP. The storage should be constructed in a location to best serve the entire City and overall water system. D. Any abandoned wells found within the study area will be sealed in accordance with with Dakota County Ordinance No. 114,Well and Water Supply Management,and Minnesota Department of Health guidelines. E. In accordance with the City's Wellhead Protection Plan (WHPP),continue protection of the existing Drinking Water Supply Management Area(DWSMA) located in the study area as shown in Figure 13-2. A DWSMA will be established for future wells as they are constructed and the WHPP is updated. F. There exists potential for future interconnection of the proposed water system in the study area between the City of Rosemount and Empire Township. Additional water system assessments and agreements between the City of Rosemount and Empire Township may be required if further development interests beyond the presented material were to arise. G. Industrial and Business Park land use water demands can be highly variable depending upon the business operation or manufacturing process employed at each property. At the time of the five year AUAR evaluation,water demands from individual properties in the Industrial and Business Park land use areas should be evaluated and estimated future demands revised if necessary. H. Any new wells(supply, dewatering, monitoring, or other)shall be constructed in accordance with Dakota County Ordinance 114, Minnesota Statutes Chapter 1031 and Minnesota Rules Chapter 4725. II.iii. Erosion and Sedimentation Mitigation Plan A. A Storm Water Pollution Prevention Plan (SWPPP)to the extent required by NPDES regulations will be needed for any development in the study area. Review of the SWPPP for each development will be required by the City or the Township. II.iv. Water Quantity and Quality Mitigation Plan A. Each new development within the AUAR area will need to incorporate BMPs to meet applicable water quantity and water quality regulatory requirements.These policies are outlined in the local stormwater management requirements section.The soils within the City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 5 AUAR area are primarily comprised of Hydrologic Soil Group A and B soils;therefore, it is likely that these policies will be met using infiltration. B. Infiltration to the Rosemount or Empire Township's standards will be provided on each development site or in a regional infiltration system that is created to serve a defined drainage area. The selection of a development-specific or regional system will be based on identifying feasible areas that take into consideration soils,drainage patterns,existing and past land use,and other factors. Areas where infiltration is not feasible or where contamination is possible will not be used for infiltration practices. C. To protect adjacent structures,an overflow from the Lake 2162 will be developed that would allow water to overflow either to the northeast toward pond 2246 or to the South toward the Vermillion River. This overflow could potentially occur if a rainfall event occurs that exceeds a 100-year 24-hour event,and/or water elevations reach extremely high levels. Based on this analysis and the installation of the proposed BMP'S,the volume of runoff generated within the AUAR area will be significantly reduced in the future,and the corresponding probability of this overflow occurring will be also reduced from that which exists today. D. If any storm water in the study area within Empire Township is to be directed to the City of Rosemount,the Rosemount infiltration standard will be applied to the development. E. Design considerations for comprehensive stormwater management should include regional ponding. F. Approved TMDL load reductions and implementation plans shall be addressed by a development's stormwater management plan.These will need to be addressed per the schedule identified in the current version the MS4 permit.The proposed language states "For TMDLs approved prior to the effective date of the MS4 permit the Waste Load Allocation (WLA) discharge requirement will become a requirement of the permittee". G. In the City of Rosemount, post-development discharge rates will be limited to 0.05 cfs/acre of the 100-year,24-hour event. H. In Empire Township, it will be required that post-development discharge rates will not be greater than pre-development discharge rates for the 1-year and 10-year,24-hour storm critical duration events to reduce erosion impacts downstream of the site. I. The developer will be responsible for grading the site appropriately to provide adequate stormwater management to the extent necessary and will be required to obtain the necessary permits for stormwater management and grading,to preserve the existing natural features,and to provide water quality protection to meet MPCA Construction General Permit requirements in addition to City of Rosemount, Empire Township, and VRWJPO requirements. J. Stormwater will be required to be pretreated prior to discharge to wetlands and Lake 2162. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 6 K. A SWPPP required by the NPDES regulations will be needed for any development in the study area. Review of the SWPPP for each development will be required by the City and Township. ll.v. Wastewater Mitigation Plan A. Figures 18-3, 18-4,and 18-5 show conceptual layout of gravity sewers, lift stations and forcemains to serve the proposed study area under each scenario. All of the scenarios maintain an identical pipe layout network and can be identified by sewer district or Rosemount Interceptor connection points as defined in Figure 18-2. B. The East sewer district consists primarily of gravity sewers,and two lift stations and forcemains that convey wastewater north to the Rosemount Interceptor along County Road (CR)42. The south lift station capacity ranges from 700 gpm to 900 gpm and the north lift station capacity ranges from 1,700 gpm to 2,000 gpm in capacity,depending on the scenario. Sewers within the East sewer district range between 8"and 21" in diameter. C. The Central sewer district consists of primarily gravity sewers,and one lift station and forcemain that convey the wastewater north to the Rosemount Interceptor along CR 42. The lift station ranges in capacity from 1,600 gpm to 2,000 gpm depending on the scenario. Sewers within the Central sewer district range in size from 8"to 24" in diameter. D. The Northwest sewer district consists of all gravity sewers which flows to the north and discharges to the Rosemount Interceptor along CR 42. The gravity sewer ranges in size from 8"to 21" depending on the scenario. E. Similar to the Northwest sewer district,the Southwest sewer district consists of all gravity sewers. Wastewater flows to the west where it discharges to the Rosemount Interceptor along Biscayne Ave. The gravity sewers in the Southwest district range in size from 8"to 15" in diameter. Il.vi. Geologic Hazards and Soil Conditions Mitigation Plan A. NPDES Phase II Construction Site permit will be required for development within the study area. This permit requires a site specific Storm Water Pollution Prevention Plan (SWPPP)to be completed for construction. This SWPPP is required to include pollution prevention management measures for solid waste and hazardous material spills that occur during construction. B. Development or construction work will require conformance with the City spill response plan. Spills will be reported to the Minnesota State Duty Officer and 911,along with applicable City staff. Those authorities will in turn notify any other appropriate officials depending on the nature of the incident. C. For all gas stations with underground tanks, annual licensing from the MPCA will be needed. D. The area of partially hydric soils in the northeast corner of the site is proposed to remain as a natural open space area. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 7 E. Should any other conditions be identified during site development activities that have the potential to materially impact either groundwater recharge or groundwater quality, investigations will be conducted and mitigation measures will be identified to address the impact consistent with applicable State and Federal requirements. F. Project contingency plans should be prepared and reviewed/approved by MPCA to address potential releases of hazardous substances identified during construction activities. These plans should include current Phase I evaluations prior to beginning construction activities to identify potential releases. G. The City requests project proposers prepare and submit to the MPCA Construction Contingency Plans("CCPs")to help identify and address any potential releases of hazardous substances that may be encountered during construction activities. Phase I Environmental Site Assessments should also be completed for the proposed project area and submitted to MPCA along with the CCPs. H. Any business or institutional uses that use or store petroleum or other hazardous products will be subject to local and state rules regulating such uses. Il.vii. Transportation Mitigation Plan A. Evaluate and compare the traffic analysis prepared as part of the AUAR in coordination with the City of Rosemount, Empire Township and Dakota County with detailed roadway mitigation. Evaluations will occur with each large scale development plan submitted for approval,the City,Township and County Comprehensive Plan updates and/or with each five year AUAR review. B. Expansion of CSAH 42 from Biscayne Avenue to US 52 from 4 lanes to 6 lanes when warranted by traffic volumes. C. Construction of an interchange to replace the existing TH 3/CSAH 42 intersection. Interchange geometry will be proposed with future studies. D. Reconstruction of the existing interchange at CSAH 42 and US 52 as a system interchange to accommodate higher turning movements.The City of Rosemount's and Dakota County's 2030 Comprehensive Plans have identified this interchange as potentially serving a rerouted alignment of TH 55 in the future. Interchange configuration and lane geometry will be determined in future studies. E. Addition of intersection control (signal, roundabout,etc),documented in an Intersection Control Evaluation report,at locations that meet the required traffic warrants and intersection spacing guidelines in accordance with the City, County, and Township including the updated CSAH 42 Segment 15 recommendations adopted by the County Board. F. Provide right-of-way required for future roadway expansion adjacent to and within the UMore property. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 8 G. Design and construction of the internal roadway system within the UMore development providing adequate service to each zone of development with turn lanes and traffic control as needed for safe and efficient traffic flow. H. Preparation of a Travel Demand Management(TDM) plan for the site,or portions thereof, prior to the first large scale development proposal.This would include, but is not limited to, action items for:transit(both bus and rail), non-motorized,and new technologies. I. Preparation of an Access Management Plan for the affected arterial and collector roadways prior to the first development proposal. Il.viii.Noise Mitigation Plan A. Site plans for future developments should include measures such as appropriate setback distances,earthen berms,noise walls, and appropriate site design (such as outdoor activity areas being developed away from major noise sources). Each of these items should be considered on a case-by-case basis. The site plans developed for specific projects should show the proposed locations and types of mitigation,with the estimated noise reductions for all areas projected to exceed noise standards. Il.ix. Nearby Resources Mitigation Plan A. Currently, UMore Park is not receiving federal funding or permitting. Should federal funding or permitting be required in the future,the project: • Must comply with Section 106 of the National Historic Preservation Act of 1966 (Section 106); • The lead federal agency will be required to initiate consultation with applicable Native American Tribes;and • Additional architectural surveys may be required. B. Erosion control measures will be required during construction to control the loss of Waukegan soils and other soil types susceptible to erosion. All disturbed areas will be required to be re-seeded and mulched as needed. C. As appropriate,site and building plans will reflect and enhance any significant views of natural features. D. Park dedication will be in conformance to the codes and requirements of the City of Rosemount and Empire Township. Il.x. Visual Impact Mitigation Plan A. Through the development review process,the City will require appropriate screening of development in the study area to control adverse visual impacts. Il.xi. Compatibility with Land Use Regulations Mitigation Plan A. If the AUAR area develops as shown in Scenarios 1,2 or 3, changes will be needed to the City of Rosemount's Comprehensive Plan, Empire Township's Comprehensive Plan,the Metropolitan Council's 2030 Regional Development Framework,and both the City's and Township's zoning ordinances through the respective amendment processes. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 9 B. While no impacts to floodplain are anticipated, if impacts occur, mitigation in conformance with Empire Township regulations will required. City of Rosemount Final Alternative Urban Areawide Review August21,2013 Page 10 III. UMORE STUDY AREA AUAR 1) PROJECT TITLE UMore Study Area 2) PROPOSER The University of Minnesota Steven Lott 1605 W 160th Street Rosemount, MN 55068 651-423-2562 Lottx020@umn.edu 3) RGU City of Rosemount Mr. Eric Zweber 2875 145th Street W Rosemount, MN 55068 651-423-4411 eric.zweber @ci.rosemount.mn.us 4) REASON FOR EAW PREPARATION EQB guidance indicates no response is necessary. 5) PROJECT LOCATION County: Dakota City/Township:City of Rosemount; Empire Township Section 33,34, 34,36 T115, R19 Section 25, 26, 27, 28 T115, R19 Section 1,2,3,4 T114, R19 Figures 5-1 to 5-3 show the study area location. 6) DESCRIPTION A. ANTICIPATED TYPES AND INTENSITY OF DEVELOPMENT The UMore Study Area is approximately 4,900 acres located in the southern portion of the City of Rosemount and the northern portion of Empire Township (Figure 5-1 to 5-3). Both governmental units have worked together along with the University of Minnesota in the preparation of this AUAR with Rosemount assuming the Responsible Government Unit role. The UMore Park AUAR includes the review of four development scenarios. Scenarios 1 through 3 are generally consistent with known plans of the primary owner of the property, the University of Minnesota. Plans for the property have been shaped by a number of policy,strategic and physical planning initiatives undertaken by the University.Additional background information on these actions can be found in Appendix B. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 11 Scenarios 1 through 3 represent interpretations of the University's Concept Master Plan for UMore Park that was adopted by the Board of Regents on December 12,2008. Scenario 4 is consistent with the comprehensive plans of the City of Rosemount and Empire Township. A description of each scenario's type and intensity of development follows: Scenario 1(Figure 6-1) Scenario 1 contains residential, commercial, industrial, mixed-use, and park/open spaces uses organized around a neighborhood,village,community or regional center. Long-term, the plan accommodates a transit connection between the three higher density center areas and points north of the UMore site. An extensive planned system of greenways and open space meanders through the site accommodating active and passive recreational uses, preservation of natural features and establishing corridors for wildlife movement. On the west side of the site,development will surround a new lake that will be an amenity resulting from gravel mining operations that are scheduled to commence in 2013. The gravel mining area was the subject of an Environmental Impact Statement. The Record of Decision for the UMore Park Sand and Gravel Resources Project EIS was published in November of 2010. County State Aid Highway(CSAH)46 bisects the site in an east/west direction forming the boundary between the City of Rosemount and Empire Township. Akron Avenue and Blaine Avenue will be extended through the site and will be transferred to Dakota County following construction and connection to the overall Dakota County highway system. In the north, the UMore Park property surrounds the Dakota County Technical College(DCTC)which abuts County State Aid Highway(CSAH)42. Residential uses occur in four different density classifications ranging from low density(1- 3.5 units/acre)to high density(12—24 units per acre). Scenario 1 uses the maximum density within the residential ranges to determine population. Neighborhood,Village, Community and Regional Centers contain varying mixes of residential and non-residential uses. Employment land uses,which are generally concentrated in the eastern portion of the site, include office/business park and light industrial uses. Scenario 1 accommodates a future population of approximately 35,000 people and about 18,000 jobs. Table 6-1 summarizes Scenario 1. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 12 Table 6-1.Scenario 1 SCENARIO 1 t.e-A ■NIAA POPLLA1C]Ft LOW DENSITY RESIDENTIAL 0-3.5 DU/AC.1° 1014 3 201% 811.4 2.840 9.088 LOW-MED DENSITY RESIDENTIAL(3.5-6DWAC.). 139.2 15.1% 591.4 3,546 8.516 MEDIUM DENSITY RESIDENTIAL 16.12 OU/AC.y. 465 1 9.5% 372.1 4.46S 10.716 HIGH DENSITY RESIDENTIAL 112-24 DU/AC.)" 5.9_ 0.1%, 4.7 113 158 NEIGHBORHOOD CENTER _ 15%lcm-Mad Dankly Residential 13.54 DWAC)" 19 2 0416 15.4 92 222 50%Medium Density Residential 11-12 DU/AC.? 64.1 1.3% 51.3 615 1,477 25%Nigh°entity Residential(1224 DU/AC.)" 311 0.7% 25.6 615 862 10%Retai/CommercWNtllllce(.35 PAR) 12.8 0.3% 10.3 447 VILLAGE CENTER 35%Medium Density Residential(6-12 DU/AC.)" 44,0 0.9% 35.2 422 1.014 40%1-egh Density Residential(12-24 OLVAC:r 50.3 1.0% 402 966 1.352 25%Ralrtit/Commerciel/OPc•t.5 FARI 314 0.6% 25.1 1,565 COMMUNITY CENTER 15%Medium Density Residential(6-12 DU/AC r 17 2 0.3% 13.7 165 396 10%High Density Residential(12-24 DU/AC.N 11 A 02% 9 2 220 308 75%RalatiCommerciaWmce(25 FAR) 85.9 1.7% 68.7 2,137 REGIONAL CENTER. 5%Median Density Residential(6-12 DU/AC Y 8.2 0.2% 6.6 79 189 5%Iigh Density Residential(12-24 DU/AC.)' 8.2 0.2% 6.6 158 221 90%Ref Mt/Commercial 1.25 FAR) T47.8 3.0% 118.3 3.680 OFFICE/BUSINESS PARK(3 PAR) 284.0 5.8% 227.2 8.247 LIGHT INDUSTRIAL(.4 FAR) 180.2 3.7% 144.2 2.166 OPEN SPACE 938.5 19.1% 938.6 OPEN WATER 2592 6.3% 2692 RIGHT-OF-WAY(COLLECTORS AND ARTERIALS) _ 491 9 10.0% 491.9 LOCAL STREETbcRIGHT-OF-WAY&NEIGHBORH000 PARKS 644.3 TOTAL I 4911.01 100.0% 4,911.0 14,299 34.518_ 18.242 NOTES r ASSUMPTIONS*, werkforte Net Acreage ca(ulated by subtracting 20%(for local ROW,netgntolgod parks.municipal and p6 L. 22'438 bss(i atonal uses)off of all land uses except Open Space Open Water and Collector/Ad/nal Right-of-Way P.p t.O e)= JsbsANerktor no Popolaeaa '-Population calculated at an average rate at Rorie: .81:1 Low Density Residential:3.2 persons per household Low-Med Density Residential:2.4 persons per household Medium Density Residential:2.4 persons par household High Density Restdental:14 persons per household "Amiga Employee assumptions. Centers:1 employee per 350 aq.II.floor area Once/Business Park•1 employee per 360 sq.IT Poor area Light Industrial'I employee per 1.160 sq 8 hoer area ^Restdentlai Devalues used nor Concept 1: Low Density Residential.3.5 DU/AC, low-Mb Density Residential'6 DU/AC. Medium Density Residential:12 DU/AC. High Density Residential' 0U/AC. Scenario 2(Figure 6-2) The quantities and locations of future land uses shown on Scenario 2 are identical to those shown on Scenario 1. Scenario 2 allows testing of an alternative that has residential densities that are more in line with the traditional densities in suburban communities like the City of Rosemount. For this Scenario,the middle of the residential density ranges have been used for the low density, low-medium density, medium density and high density categories. As a result,Scenario 2 projects a future population of approximately 25,000 people and about 18,000 jobs. Table 6-2 summarizes Scenario 2. City of Rosemount Final Alternative Urban Areawide Review August21,2013 Page 13 Table 6-2.Scenario 2 SCENARIO 2 t,NJ U's, ',4[qc c, ._ .i, f1[/V.CFEAbE' 'jr, FUFUTATl6 r -t..,OYFtS LOW DENSITY RESIDENTIAL(1-3.5 DO/AC.p 1014 3 20.7% 811.4 1.826 5,842 LOW-MED DENSITY RESIDENTIAL(3.5-6 DU/AC I 739.2 15.1% 591.4 2.809 6,742 MEDIUM DENSITY RESIDENTIAL(8.12 DU/AC.)" 485.1 9.5% 372.1 3.349 8,037 HIGH DENSITY RESIDENTIAL(12-24 DU/AC.)" 5.9 0.1% 4.7 85 118 NEIGHBORHOOD CENTER 15%Low-Med Density Residwuwl(3.5.6 DU/AC.)" 19.2 04% 15.4 73 175 50%Medium Denary Residential(6-12 DU/AC.)" 64.1 1.3% 61.3 482 1.108 25%Hitt Density Residential(12.24 DU/ACJ" 32.1 0.7% 25.6 482 646 10%RetaillCommerciaUDBte(.36 FAR) _ 129_ 0.3% 10.3 447 VILLAGE CENTER 36%Medium Density Residential(6-12 DU/AC.)" 44 0 0.9% 352 317 760 40%High Density Reaidmitid(12-24 DU/AC-)° 503 1 0% 40.2 724 1.014 25%Retad/ConimercialRfiee(5 FAR) 31 4 0.6% 25.1 1,585 COMMUNITY CENTER 15%Medium Dansiuy Resident 1(6-12 DU/AC.)" 17.2 0.3% 13.7 124 297 10%High Density Residential,(12.24 0U/AC)" 11 4 02% 9.2 185 231 75%Retail/CommeruaUOfbee(.25 FAR) 85.9 1.7% 68.7 2,137 REGIONAL C TER . 5%Medium Densely Residential/6-12 0U/AC.)" 82 0 2% 6.6 59 142 5%High Density Residential(12-24 DU/AC.)" 8.2 0.2% 6.8 118 188 90%RetaiVCctnmeeial(.25 FAR) 147.8 3.0% 118.3 3,880 OFFICE I BUSINESS PARK(.3 FAR) 284.0 5.6% 227.2 8.247 LIGHT INDUSTRIAL(.4 FAR) 180.2 3 7% 144.2 2,188 OPEN SPACE 938.5 19.1% 838.5 OPEN WATER 259.2 5.3% 259.2 RIGHT-OF-WAY(COLLECTORS AND ARTERIALS) _ 491.9_ 10 0% 491.9 LOCAL STREETS RIGHT-OF-WAY&NEIGHBORHOOD PARKS 644.3 (TOTAL 1 4911.01 100.0%1 4,911.0 10.571 25.278 18.242 NOTES I ASSUMPTIONS: 'Net Acraege calculated by subtracting 20%(kir local ROW,neighborhood parka municipal and Population 15.431 Instdutional uses)off of all land uses eldeePtOpen Space.Open Water end Collector/Arterial Right-of AM of Way Patwbna.n: a Population "Papulation calculated at an average tate of. Rad.: 1.11:1 Low Density Residential:3.2 persons per household Low-Mad Density Residential'2.4 persons per household Medium Density Residential:2.4 persons per household High Density Residential.1 4 persdrts per household "'Average Employee assumptions: Centers:1 employee per 360 sq-It.loot area Office 1 Business Park:1 employee per no sq.6.floor are. Light Industrial:1 employee per 1 160 sq.R.Hoar area 'Residential Densities used for Concept 2: Low Densely Residential:225 DU/AC Low-Med Density Residential'4.75 DU/AC Medium Density Residential:9 DU/AC. High Density Residential Residentiai.18 DU/AC. Scenario 3(Figure 6-3) Scenario 3 is intended to examine the implications of a future land use pattern that includes expanded employment opportunities. With the exception of areas lying between Barbara and Blaine Avenues,the land use pattern shown on Scenario 3 is identical to that shown on Scenarios 1 and 2. Scenario 3 replaces largely residential uses lying west of Blaine Avenue with office/business park uses and light industrial. The maximum residential densities are used,the same as used in Scenario 1. As a result,Scenario 3 accommodates a future population of approximately 31,500 people and about 24,500 jobs. Table 6-3 summarizes Scenario 3. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 14 Table 6-3.Scenario 3 SCENARIO 3 LAND iJ^C ^.nS,c:^ .ra,:- „ NE't.cr-TA;t" ult 7;. .-.off:.p-.-rl.- C•.I'L.e.• '.- LOW DENSITY RESIDENTIAL(1-3.5 DU/AC.). 784 3 160% 627 4 .,196 7.027 LOW-MED DENSITY RESIDENTIAL(3.5.6 DU/AC,)" 755.2 15.4% 604.2 3.625 8.700 MEDIUM DENSITY RESIDENTIAL 16-12 OU/AC J" 412.3. 8.4% 329.8 3.968 9.498 HIGH DENSITY RESIDENTIAL 112.24 DU/AC r 5 9 0.1% 4 7 113 158 NEIGHBORHOOD CENTER 15%Low-Med Density Residential 13.54 DU/AC.1• 19 2 0.4% 154 92 222 50%Medium Density Residential(6 12 DU/AC ' 64.1 1.3% 51.3 616 1.471 25%High Density Residential 112.24 DU/AC.Y 321 0.7% 25.6 616 862 10%RetaUlCommercla9081ce{36 FAR) 12.8 0.3% 10.3 441 VILLAGE CENTER 35%Medium Density Residential 16-12 DU/AC.Ir 44.0 0.9% 35.2 421 1.014 40%High Density Residential(12.24 DU/AC.1" 50.3 1.0% 40.2 966 1,352 25%Retati/CommerclaUOnke(.5 FAR) 31.4 0.6% 25.1 1,565 COMMUNITY CENTER 15%Medium Density Residential(6.12 DU/AC)" 17 2 0.3% 13.7 165 396 10%high Density Residential(12.24 DU/AC). 11.4 0.2% 9.2 220 308 75%Rela6/CommtuclaVOfIIca 1-25 FAR) 85.9 1.7% 68.7 2.137 REGIONAL CENTER. 5%Medium Density Resldert ei(642 DU/AC.). 8.2 0.2% 6.6 19 189 5%high Density Residential 112-24 DU/AC:r 82 0.296 6.6 158 221 90%Retail/Commercial f.25 FAR) 147.8 3.0% 118.3 3.680 OFFICE/BUSINESS PARK I 3 FAR) 462.2 9.4% 369.7 13,421 LIGHT INDUSTRIAL(4FAR) 269.0 5.5% 215.2 3233 OPEN SPACE 136.5 19.1% 938.5 OPEN WATER 259.2 6.3% 259.2 RIGHT-OF-WAY(COLLECTORS AND ARTERIALS) 491.9 10.0% 491.9 LOCAL STREETS RIGHT-OF-WAY&NEIGHBORHOOD PARKS 644.3 TOTAL I 4911.01 100.0% 4,911.0 13,224 31,422 24,483 NOTES/ASSUMPTIONS: we.ererte Paputafi °Nat Acreage calculated by subtracting 2119.(for local ROW,neighborhood parks.municipal and inxitllalonal an 20.424 uses)off*all tend was except Open Space.Open Water and Condor/Arlenel Righhof.Wey AepW>Mlen): Job,WarMMrn PapWSden ..Population calculated*in average rata of; Rena: 1.20:1 Low Dwtsay Residential.3.2 persons per household LoW-Mid Density Residelllal:2,4 persons per household Medium Density Residential.2.4 persons per household High Density Residential:1.4 persons per household "Averege Employee assumptions: Centers:1 employee per 350 sq.a.floor area Omce/Business Park 1 employes per 360 sq.8 poor ages Light Industrial:1 employee per 1,160 sq.5.floor area "Residential Densities used far Concept 3: Low Density Resleemlal•35 DU/AC. Low-Mod Censey Residential.6 DU/AC. Medium Density Residential:12 DU/AC. High Density Residential'24 DU/AC. Scenario 4-Existing Comprehensive Plans Scenario 4 depicts the current comprehensive plans of both the City of Rosemount and Empire Township. Both comprehensive plans recognize UMore Park and reference future growth and development. Rosemount's plan categorizes the UMore site as Agricultural Research (AGR). The plan states, "This land use designation is used solely for the UMore Park property that is owned and operated by the University of Minnesota. It is anticipated that, after the UMore Park Master Plan is created and adopted,a major Comprehensive Plan amendment will be conducted to re-designate the land to its appropriate land use category." The Empire Township Comprehensive Plan categorizes the UMore Park property as University of MN (UMORE). The property is also designated as being in a Mining Overlay Area. The plan states, "The University of Minnesota Outreach, Research and Education Park (UMore Park)consisted of nearly 4,530 acres in Empire Township. Approximately 2,830 acres of land has become part of the Vermillion Highlands Wildlife Management Area City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 15 (WMA)jointly operated by the University and the DNR for agricultural research and WMA usage. The remaining 1700 acres of UMore Park is being planned for mineral extraction and eventual urbanization. The University has completed a two-year long study of potential urban uses in Empire and the City of Rosemount(additional 2900 acres). The UMore Property in Empire is also included in the Mineral Extraction Overlay area." Since both of the current comprehensive plans recognize the current agricultural condition of the UMore Park property, neither plan provides a projected basis for examining planned residential and non-residential uses. B. INFRASTRUCTURE PLANNED TO SERVE THE DEVELOPMENT If future development occurs as proposed under Scenarios 1, 2 or 3, new utilities, roads and other infrastructure will be needed to serve the AUAR area. Comprehensive Plans and this AUAR identify the infrastructure needed to support the varying levels of development identified in the Scenarios. Infrastructure needs are discussed in greater detail under the response to AUAR Items: 13—Water Use, 17—Water Quality:Surface Water Runoff, 18— Water Quality: Wastewaters and 21—Traffic. Item 28—Infrastructure and Public Services includes a summary of new infrastructure that would be needed and where appropriate, provides comparisons between the scenarios. C. ANTICIPATED DEVELOPMENT STAGING The development of UMore Park is expected to occur over the next 30 to 40 years depending on market conditions and overall development demand. The timing of development will also be influenced by the timing of construction for required infrastructure improvements both locally and regionally. The future availability of transit may also influence the timing of the full build-out of the UMore Park property. In general, development is anticipated to be phased from the north in Rosemount along County State Aid Highway(CSAH)42 to the south extending into Empire Township. The timing of development in the western portion of the UMore Park property will be influenced by the timing of the extraction of minerals in the area and the restoration of the property to accommodate urban development. The location of actual land uses may shift within the study area to accommodate underlying past land use, updated information,storm water management needs, internal road access, etc. However, any development density is anticipated to remain in conformance with the densities reviewed in this AUAR. 7) PROJECT MAGNITUDE Table 7-1 summarizes the proposed land uses for each scenario. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 16 Table 7-1 Composite Scenarios Table COMPOSITE SCENARIOS TABLE SCENARIO 1 SCENARIO 2 SCENARIO a SCENARIO 4 6.CiS ,,■JSS ',801,1 ACREAGE 47,,=414- arRFA;F I O W Of:NSA-Pr 9ESIDENI:AL(1.3 5 PAi'AC I' 1014-3 317% 1114 3 20 7% 784 3 16 0% N/A N/A LOW MED DENSITY RESICENTIAL 135 6 MAC _ 35.2 r5 135 739.2 15.1% 7552 15.4% N/A N/A MEDIU',DENS.TV RESICENTIk(6.12 CXJ/ACy 465 ' 95% 465 1 8595 4123 8:4% WA N/A ■LG11 t1f 4511 RC A101:'N1IAt (12-)4I4 r/AC:y ''3 a/1% 55 i)1% 59 0155 N/A N/A 340,G 4ElCRROC)CCFI?ER 15%LD'A+-Med Den3R1 Resldental(•3.6-5 DUJAC r 15 2 /438 19 2 0.4% 19 2 0 4% N/A N/A 50%Oediun Density kes:dern131(/3.12 DOUAC.)" 64• r 33 64 1 1 3% 84.1 1 3% N/A N/A 25%Kgn Etwnadp Rescler8ial(12-24 DI!/AC)" 32' 0 7'..8 321 7 7% '321 0'% N/A N/A 10%Reta 1/Com/5e/64UOP Ce(35 FAR) 1 3 0 3* 12 c 0.3% 12 8 0.3% N/A N/A VILLAGE CENTER 35'%Me4wm Der'%Res,cieneal(6-12 DU/AC)" 41 0 0 935 44 0 4.9% 440 0 9% WA N/A 4036 Hlg6 Density Recsk0141.11244 CU/AC.1^ it 3 1.3% 50 3 10% 00.3 1..0% N/A N/4 25%Reta LCbmmercaliOltice('.5 FAR) 31 4 1/6% 31 a 1/6% 31 4 0 6% N/A N/A C.OM MUNI I Y CEN t/R 15%/.tedium Ders.y Resdde^tial(6 12 2JU/AC)1 1':2 0 3% 17 2 0.3% 17.2 0.3% WA N/A 10%Hiyn Density Ree.uertai(1244DU/AC.)^ 11 4 3.2% 11 a :)2% 11 4 0.2% N/A N/A 7515 Reza,352Onirnerc al11Y7te(25 rAR) 8_9 1 7% 85 9 1 7% 85.9 1 7% WA WA REGIONAL CENTER 5%4de0 Jm Deny Resident/a l(6-12 DU/AC r i 2 4.29E 8 2 /3 2% 8.2 0.2% N/A N/A , 5%High Dersit/Resue/teat(12-24 DIJAC)'` 6 2 0 2% 8 2 0.2% 8.2_ 0.2% NIA N/A 90% 1Cn nrTh cral l 25 FAR) 14 9 31138 14:`13 3 0% 147 5 3 0% N/A N/A 0,C10Eid/JSIN-S9 PARK(5,,AR} 2840 49% 2840 39% 4622 94% N/A WA LIGHr INDUSTRIAL(.4pAR} 160.2 37% 1803 1/7% 2690 55% N/A N/A 00651 SPACE 9345 39 1% 9385 19 1% 9385 19 1% N/A WA OPEN WATER 257 2 5 3% 259 2 5 3% 259 2 5 3% N/A N/A 3433-41. F•WAY(00.LEC∎ORSAtdUAk1ERIALS1 43/10 1409E A119 100% 4919 100% N/A N/A LOCAL STREETS WORT-C.WAY 8 NEIGHBORHCOD PARKS ,TOTAL I 4911.01 100.0%I 1 4911.01 100.0%1 I 4911.01 100.0%1 I N/AI 100.0%' Building heights will be as regulated by zoning provisions in place at the time of development or as specifically modified as part of a Planned Unit Development approval. 8) PERMITS AND APPROVALS List all known local,state and federal permits,approvals and financial assistance for the project. Include modifications of any existing permits,governmental review of plans,and all direct and indirect forms of public financial assistance including bond guarantees,Tax Increment Financing and infrastructure. It is anticipated similar permits and approvals will be needed for most scenarios. However,where differences occur,they are noted. Development within the study area will be funded through a combination of developers'funds and local agency funds. Mitigation will include the need for development in the area to obtain the required permits and adhere to permitting stipulations. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 17 Table 8-1. List of Permits and Approvals Federal Permit/Approval US Army Corps of Engineers Section 404 Permit State Permit/Approval Pollution Control Agency NPDES Storm Water Permit Pollution Control Agency Sanitary Sewer Permit Section 401 Water Quality Certification Permit,if Section 404 Individual Permit Pollution Control Agency is needed Pollution Control Agency Approval of remediation and cleanup plans,as applicable Department of Natural Temporary dewatering for construction Resources Department of Natural Water appropriation permit and New Well Construction approval Resources Department of Health Water main permit Department of Health Well permit State Historic Preservation Coordination,if federal permits are needed with development Office MnDOT State Aid approval MnDOT Work in right-of-way permit,if applicable Regional/County/Local Permit/Approval City of Rosemount Comprehensive Plan amendment for scenarios City of Rosemount Wetland Conservation Act Approval City of Rosemount Preliminary and final plat approvals City of Rosemount Building permits City of Rosemount Rezoning or text amendments for scenarios Empire Township Comprehensive Plan amendment for scenarios Empire Township Preliminary and final plat approvals Empire Township Building permits Empire Township Rezoning or text amendments for scenarios Empire Township Wetland Conservation Act Approvals Metropolitan Council Comprehensive Plan amendments for scenarios Metropolitan Council Review of new sanitary sewer plans Dakota County Approval of county road improvements Dakota County Access permits Dakota County New Well/Abandonment Permit Dakota County Conformance with County Ordinances,where applicable City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 18 9) LAND USE Describe current and recent past land use and development on the site and on adjacent lands. Discuss project compatibility with adjacent and nearby land uses. Indicate whether any potential conflicts involve environmental matters. Identify any potential environmental hazards due to past site uses,such as soil contamination or abandoned storage tanks,or proximity to nearby hazardous liquid or gas pipelines. A. EXISTING LAND USES The UMore Park property has been owned and operated by the University of Minnesota since the late 1940s. The property lies in both the City of Rosemount and Empire Township. Existing land use patterns for UMore Park within the two jurisdictions have been similar or consistent with one another over the years. The University of Minnesota has used the land for educational outreach programs, research, agricultural production, and to a more limited extent, recreational activities. Developed uses on the property in Rosemount include the administrative office;two beef research facilities,a poultry research facility,the west research complex,and the contracts and leasing office. Developed uses on the property in Empire Township include the central research complex,the south research complex and the Lone Rock Trailhead. Approximately 76 acres on the site are currently used for community farming. Fourteen families currently raise crops on this land that are sold predominantly at local area farmers markets Approximately 1,700 acres in the northwest part of the UMore Park site is anticipated for gravel mining and has been approved for issuance of local mining permits. Gravel mining in the area is expected to last for up to 40 years; however, resource extraction will be phased over time in accordance with the project EIS with restoration efforts occurring as mining operations are relocated. Areas of traditional suburban growth have emerged over the past twenty-five years near the UMore Park property, particularly on the north and west in the City of Rosemount. The development patterns in these areas are consistent with development patterns found in central Dakota County. B. SURROUNDING LAND USES—CITY OF ROSEMOUNT Surrounding land uses in the City of Rosemount include a mix of residential, industrial and educational uses. Residential neighborhoods are located north of the northwest portion of the UMore Park site including a mix of single-family detached dwelling units and attached townhomes. County State Aid Highway(CSAH)42 serves as a divide between these existing residential areas and the UMore Park site. A business park and a general industrial land use pattern are located adjacent to the northwest edge of the UMore Park site. This area encompasses approximately 335 acres of manufacturing, office,warehousing and storage spaces. Biscayne Avenue separates these developments from the UMore site. The Dakota County Technical College (DCTC) is located along County State Aid Highway (CSAH)42,surrounded by UMore Park on the west,south and east sides. Ground was broken in June of 2012 for a new Rosemount community park that lies immediately south of City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 19 the DCTC campus. The 26 acre park features ball diamonds and other active recreational facilities. Land lying north of County State Aid Highway(CSAH)42 is just beginning to see construction of new single-family neighborhoods which are displacing land used for agriculture. Development in this area is consistent with the development pattern examined as part of the CSAH 42/Akron AUAR completed by the City of Rosemount in 2007 and updated in 2012. The Flint Hills Resources facility is located along Highway 52, northeast of the UMore site. This facility,which is not contiguous to UMore's boundary, includes the Pine Bend Refinery which processes approximately 320,000 barrels of crude oil per day. The northeast corner of the UMore site abuts land currently used for agriculture and an industrial use that abuts Highway 52. The eastern border of UMore in Rosemount also abuts land that is in the City of Coates. The existing land use pattern in Coates is predominately agricultural. C. SURROUNDING LAND USES—EMPIRE TOWNSHIP Existing land use patterns in Empire Township primarily consist of agricultural uses including active mining operations which are shown on Empire Township's existing land use map as Industrial. In addition to mining operations south of the UMore Park site,two significant recreational resources are adjacent to the site as well. Dakota County and the Minnesota Department of Natural Resources acquired 817 acres,commonly known as the Butler Land Trust property. In 2012, Dakota County completed a Master Plan for 457 acres of the Butler property for development of the new Whitetail Woods Regional Park. The remaining 360 acres of the Butler property is owned and maintained by the Minnesota Department of Natural Resources as a Wildlife Management Area (WMA). East of the Butler property is the 2,822 acre Vermillion Highlands Modified Wildlife Management Area. The facility is jointly operated by the University of Minnesota and the Minnesota Department of Natural Resources, in conjunction with Dakota County and Empire Township. Vermillion Highlands contains equestrian, hiking and cross country ski trails and offers major hunting opportunities in the region. Land in the northern portion of the Vermillion Highlands property will be used for agricultural research by the University of Minnesota as development displaces current research facilities in the UMore Park property over time. The southeast portion of the UMore Park site in Empire Township abuts the City of Coates. All of the abutting land in this area is used for agricultural purposes. Figure 9-1 identifies the general existing land use pattern in the vicinity of the UMore site. D. LAND USE COMPATIBILITY The UMore Park property sits on the developing edge of urban growth in the Twin Cities Metropolitan Area in the City of Rosemount. Accordingly, much of the surrounding land remains under agricultural and semi-rural land uses. Land lying west of the UMore Park property is either industrial or agriculture which is generally compatible with both the proposed interim gravel mining use of the property and the eventual transition to urban City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 20 development. The gravel mining operation was addressed in an Environmental Impact Statement prepared in October of 2010. Land lying along County State Aid Highway (CSAH)42 which is UMore's northern boundary will experience additional residential and commercial development,consistent with Rosemount's Comprehensive Plan as well as the CSAH 42/Akron AUAR. Scenarios 1,2 and 3 that are included in this AUAR depict a pattern of future land use that closely mirrors the planned land use pattern to the north. In this area,the planned land use pattern generally transitions from residential uses on the west to commercial uses in the center to industrial uses to the east extending to Highway 52. In the southern portion of the UMore Park property, Scenarios 1, 2 and 3 depict a land use pattern that contains low-density residential uses which will be compatible with the long- term development of the adjoining area in Empire Township. In the south,the eastern portion of the UMore Park site that abuts Vermillion Highlands is shown as low-density residential or open space uses on Scenarios 1,2 and 3,which will be compatible with the use of the Vermillion Highlands property. The extreme southeast corner of the AUAR area is a parcel owned by Dakota County which long-term, is expected to have an industrial use and be compatible with both Vermillion Highlands and agricultural property to the east. E. SUPERFUND SITE STATUS The University of Minnesota Rosemount Research Center Superfund Site ("UMRRC Site") consists of three electrical transformer recycling facilities operated by former University tenants, known as the George's Used Equipment (GUE)site the Porter Electric and Machine Company("PE") site,and the U.S.Transformer("UST")site,and a former University chemical waste disposal site.The UMRRC Site was added to the Minnesota Permanent List of Priorities ("PLP") on October 30, 1984 and the federal National Priorities List ("NPL")on June 10, 1986. The UMRRC Site was the subject of extensive investigation and cleanup by the University in the late 1980s and early 1990s,with regulatory oversight by the United States Environmental Protection Agency("U.S. EPA") and the Minnesota Pollution Control Agency ("MPCA"). The response actions selected by MPCA,with concurrence by U.S. EPA,for the UMRRC Site are documented in the Minnesota Enforcement Decision Document dated December 4, 1986("MEDD")and the Record of Decision dated June 11, 1990("ROD"). The objectives of the response actions required under the MEDD and ROD were to eliminate human health risks associated with hazardous substances in soil, provide safe drinking water to affected residences,and achieve Federal and State drinking water standards for chloroform in groundwater. With U.S. EPA concurrence, MPCA modified the ROD via Explanations of Significant Differences("ESDs") in August 1991 and October 1993, respectively,to make various changes to treatment and disposal methods for the soil response action. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 21 Response actions implemented by the University under the MEDD and ROD included: • Operable Unit 1(OU 1)-construction of a community rural water supply system and a groundwater pump and treat system; • Operable Unit 2 (OU 2)-Excavation and off-site disposal of soil impacted by metals at multiple concentrations and PCBs at concentrations greater than 25 parts per million ("ppm")from GUE;consolidation and on-site containment of soil impacted by metals and PCBs between 10 and 25 ppm in a containment unit designated as GUE Deep; and • Operable Unit 3 (OU 3)-Excavation and on-site thermal destruction of PCB-impacted soil with concentrations greater than 25 ppm from multiple areas with disposal of treatment residuals and wastewater in GUE Deep; placement of a 10-inch soil cover on excavated areas with PCBs in soil at concentrations between 1 and 10 ppm;and placement of a 16-inch soil cover and fencing of GUE Deep. This OU is co-located with OU 2. The University completed the cleanup in 1994. The UMRRC Site was administratively closed, and was removed by MPCA and U.S. EPA from the PLP and NPL on November 27, 2000 and February 6, 2001, respectively. Because hazardous substances remained in place after the cleanup,the UMRRC Site is statutorily subject to review by U.S. EPA and MPCA every five years to confirm that the completed response actions remain protective of public health and the environment. In all four of the Five-Year Reviews performed since the UMRRC Site was administratively closed, the last of which was completed between October 2011 and June 2012, U.S. EPA and MPCA determined that the response actions continue to be protective of public health and the environment. In the Fourth Five Year Review Report(June 14, 2012), U.S. EPA recommended several actions to ensure long-term protectiveness of the response actions. The University is discussing those recommendations with appropriate MPCA and U.S. EPA Superfund Program requirements. The Fourth Five Year Review Report can be viewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/tWssrd/@umorepark/documents /article/ssrd article 405352.pdf F. POTENTIAL ENVIRONMENTAL HAZARDS Significant portions of UMore Park have historically been used primarily or exclusively for farming. In those areas,the potential for significant environmental impacts from past land use is very low. However,other remaining portions of UMore Park have a higher risk of environmental impacts due to land uses that occurred there during and after World War II. The roughly eastern two-thirds of UMore Park comprised the industrial portion of the Gopher Ordnance Works ("GOW"),a WWII-era government-owned, contractor-operated facility.The GOW operations were focused primarily on the production of smokeless gunpowder for cannon shells. The plant also was used for the manufacture of several intermediary products for powder production, including nitric acid and a concentrated form of sulfuric acid known as oleum,which was used on-site and was also exported to other ordnance plants. No munitions assembly or high explosives production took place at GOW. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 22 The federal government condemned approximately 11,500 acres of Dakota County farm land for the GOW in 1942. The construction period for the GOW,which was designed to include over 900 buildings,two power plants, a wastewater treatment facility and associated industrial and sanitary sewer systems,and other infrastructure,was relatively short and involved intense activity from 1942 through 1944. Construction of the facility began in 1942,was halted in 1943, and then restarted in 1944.The facility included two sets of powder production lines(the "ABC" and "DEF" lines). Construction of the DEF lines was never completed. Limited production of gunpowder and related products occurred on the ABC lines only during the period from approximately January to August of 1945. After August of 1945,the plant was kept in use for a brief period for the purpose of reworking salvaged powder. The GOW was declared war surplus in 1946. Demolition activities were initiated including burning off excess powder and powder-coated materials in a designated area at the site, demolishing buildings and other above-ground infrastructure,and stripping and shipping salvaged building materials and equipment for use at other federal facilities or public sale. At least some of the demolition debris was disposed by the federal government's contractors on-site. GOW construction,operation and demolition activities have resulted in releases of hazardous substances and petroleum products in areas of UMore Park where those activities occurred. Approximately 8,000 acres of former GOW property were transferred to the University by the federal government in 1947 and 1948 for use in agricultural and other research. Post- GOW land uses by the University and its tenants have also resulted in releases of hazardous substances and petroleum in limited areas of UMore Park. The former GOW was determined to be eligible to participate in the Formerly Used Defense Sites ("FUDS) Program. The FUDS Program is not a regulatory program, but is an administrative program managed by the United States Army Corps of Engineers for the investigation/cleanup of former defense sites. The Corps needs concurrence for its actions at FUDS sites from the appropriate state regulatory program, in this case,the MPCA Superfund Program. The applicable state law pertaining the releases of hazardous substances is the Minnesota Environmental Response and Liability Act, Minn.Stat. §§ 115B.01,et.seq. ("MERLA"). Under MERLA,owners and operators(including property owners) may be considered responsible parties for releases of hazardous substances and be required to perform appropriate response actions to address releases that pose a threat to public health or the environment. Several significant environmental studies and investigations of UMore Park and the adjacent Vermillion Highlands have been completed since 2002,which have documented releases of hazardous substances from both GOW operations and post-GOW activities. A listing of those initiatives can be found at: http://www.umorepark.umn.edu/planning/gowinvestigation/repository/index.htm City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 23 These investigations have also identified potential physical hazards to the public,such as debris and abandoned structures, and areas that contain asbestos.The University has posted signs on segments of the UMore Park property that are not open to the public due to the presence of potential physical hazardous and identified substances in some areas. The following is a brief summary of the more significant environmental studies and investigations that have been completed to date (in reverse chronological order): i) February,2012—Remedial Investigation Report—Barr Engineering The Remedial Investigation Report presents the results of the Remedial Investigation ("RI")of the eastern two-thirds of UMore Park. The An, .A A A, study area comprised approximately 3,500 acres and # included the GOW powder production lines and ancillary facilities. The RI was conducted to ih< # "," investigate the known and potential releases of . �' V ,. hazardous substances and petroleum products associated with both GOW and post-GOW land uses. The RI investigated 71 Sites of Concern ("SOCs")that were identified through the Phase I Environmental Site Assessment(Barr Engineering, 2011) and prior studies. The investigation included the collection of approximately 578 soil samples collected from test trenches,soil borings,surface soil and sewer sampling locations;groundwater monitoring from existing and newly installed monitoring wells;completion of two geophysical investigations;and televising selected reaches of GOW sewers. Releases of hazardous substances that resulted in constituent of concern ("COC") concentrations above MPCA Tier 1 Soil Reference Values for unrestricted site use scenarios("Tier 1 SRVs")were identified in 39 of the 71 investigated SOCs. Nitrate+nitrite(as N),which was detected in shallow groundwater above drinking water standards at and upgradient of the project area, is attributed to regional agricultural land use. The results of the RI provide sufficient detail for the University to identify significant data gaps for the investigated SOCs and develop conceptual response action strategies to address identified releases. The RI findings will be used to determine the future additional investigations and response actions that are necessary to protect public health and the environment and inform future use of the property. All future investigation and cleanup activities will be conducted with MPCA Superfund and/or Brownfields Program oversight,and will be based on the planned use of the property. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/2012finalrireport/index.h tm City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 24 ii) April 2011-Phase I Environmental Site Assessment,UMore East, Dakota County, Minnesota—Barr Engineering The purpose of the Phase I Environmental Site Assessment was to identify recognized 1604 k �w� �" , environmental conditions("RECs")on VO,AlltO . approximately 3,175 acres of UMore Park. The " r: : Phase I ESA revealed no evidence of RECs in connection with the subject property,except for the following: • Releases at George's Used Equipment, Porter Machine and Electric, U.S.Transformer and former Burn Pit sites(i.e.,the UMRRC Site); • Presence of Asbestos Containing Building Materials on the ground near some GOW structures in former powder manufacturing and processing areas; • Documented releases associated with the GOW construction, use,or decommissioning/demolition activities and identified post-GOW activities; • Potential releases associated with GOW construction, use,or decommissioning/demolition activities and the identified post-GOW activities; • Documented presence of cannon powder after GOW decommissioning; • Suspected or known improper waste disposal; and • Potential releases of arsenic in GOW powder production areas from possible past use of arsenic-containing pesticides. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 338076.pdf iii) December 2010—Phase I Environmental Site Assessment,Vermillion Highlands Property, Dakota County, MN—Barr Engineering The purpose of the Phase I Environmental Site Assessment was to identify RECs on approximately 2,840 acres of the Vermillion Highlands Property, located adjacent and to the south of UMore Park. The Phase I ESA revealed no evidence of RECs in connection with the property,except for the following: • Documented past releases of smokeless gunpowder at identified finished powder shipping houses, rifle powder blending tower and packing house; • Waste disposal at the "M" Street/Coates Dump and potential waste disposal at the Northern 1945 Disturbed Area; City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 25 • Presence of Asbestos-Containing Building Materials on the ground in the vicinity of the powder screening houses,shaker sieve houses, rifle blending tower and packing house; • Potential improper waste disposal at the Dole Explosives site; • Past application of sewage sludge at the Sewage Sludge Application Research Site; • Suspected spillage of petroleum products from the above ground storage tank at the Forage Hill site; • GOW-era wastewater discharge to the GOW drainage ditch; • Former operations of the law enforcement agencies shooting range resulting in lead impacts to soil;and • Fugitive battery disposal at the abandoned Ohmann Farm. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/cpub/@ssrd/@umorepark/docum ents/article/ssrd article 338072.pdf iv) October 2010—UMore Park Sand and Gravel Resources Project Final EIS Report—SEH The University of Minnesota prepared a Final a � Environmental Impact Statement("EIS")for the c a establishment of new aggregate mines and ancillary operations on approximately 1,722 acres of the UMore Park property. The area is known as the UMore Mining Area ("UMA"). Prior to the preparation of the Final EIS,a Draft EIS,a Scoping Decision Document and a companion Scoping Environmental Assessment Worksheet were prepared. The Draft EIS was prepared and distributed to the Environmental Quality Board ("EQB")as well as other local and regional units of government,agencies and interest groups. The alternatives evaluated in the Final EIS included the Build (mining and ancillary uses on the UMA) condition and the No-Build condition. Subject areas included, but were not limited to, land use,sensitive resources,surface water quality,groundwater,traffic, air quality,visual impacts and archaeological, historical and architectural resources. The Final EIS includes a summary of mitigation measures to address potential impacts. The Record of Decision for the EIS was issued in November of 2010. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 338066.pdf City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 26 v) August 2010—Technical Memorandum—Preliminary Investigation,Naval Intelligence Reserve Center Gun Ranges—Barr Engineering A Preliminary Investigation was conducted of the <" former skeet shooting range,trap shooting range ribtt ' .. and firing range at the former Naval Intelligence Off „t � Reserve Center("NIRC"). The gun ranges were „ wk$ constructed for recreational uses for Navy ' personnel stationed at the NIRC. Approximately "" - `,.w..” 110 soil samples were collected and analyzed. The results of the investigation found that the use of the NIRC firing range did not significantly affect soil quality in the investigation area. The detected lead and zinc concentrations in the soil were below Tier 1 SRVs for residential land use. Five of the 110 samples had arsenic concentrations between 9.2 mg/kg and 13 mg/kg,which were slightly above the Tier 1 SRV of 9.0 mg/kg. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 338063.pdf vi) August 2010—Environmental Baseline Survey, Naval Intelligence Reserve Command (Post-demolition)—Versar An Environmental Baseline Survey("EBS")of the Naval Intelligence Reserve Command was performed in July of 2010. Based on observations and reviewed data, all areas on the subject property were judged to have no storage, release, or disposal of hazardous substances or petroleum products or their derivatives, including no migration of these substances from adjacent areas, with six exceptions. Further,Asbestos-Containing Building Materials were found in 6 former buildings including caulk,sealant, mastic,vinyl flooring,Transite and thermal system insulation. Lead-based paint was found in 10 former buildings. Polycyclic biphenols were detected in the soil adjacent to a transformer and disposed in a Subtitle D landfill. According to the Navy,all structures and environmental issues noted in the EBS were removed from the property and cleaned to regulatory limits promulgated by the MPCA or as established/recommended by U.S. EPA as of August 2010. The EBS recommended no further action. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 337951.pdf City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 27 vii) May 2010—Technical Memorandum—Preliminary Subsurface Investigation Results, Ancillary Use Facility, UMore Mining Area—Barr Engineering A Preliminary Subsurface Investigation ("PSI")was d ,tr s conducted at the Ancillary Use Facility("AUF") �" 444 $ m located at UMore Park. Nineteen test trenches vl A' > '�� <. were excavated in six areas of potential concern. ' '` ile , ,,,,, No evidence of a release of a hazardous substance `;x -,',.4,44' I ' ' or petroleum products or the presence of dump materials was identified during the PSI. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 338059.pdf viii)January 2010-Supplemental Site Inspection(SOC 4)/Remedial Investigation(SOC 5) Report—Barr Engineering As part of the Draft Environmental Impact Statement ("DEIS")for proposed mining operations at the UMore Mining Area ("UMA"), sites of concern ("SOCs")were investigated at the Former DNT , Loading Platform and Drainage Ditch (SOC 4)and at the Central Services Station/former DNT Storage Bunkers(S005). The Supplemental Site Inspection and Remedial Investigation were designed to evaluate the nature and extent of hazardous substances or petroleum products in SOCs 4 and 5 that were released during or after the operation of the GOW. The results of the investigation are detailed in the full report which can be found at: http://conservancy.umn.edu/bitstream/91608/11/SSI- Rlreport UMA 011210 Report.pdf ix) December 2009—Final Expanded Site Inspection Report—U.S.Army Corps of Engineers—Omaha District Tidewater, Inc. prepared a Final Expanded Site Inspection ("ESI") Report for the United States Army m 0 Corps of Engineers ("USACE"). The purpose of the ESI was to expand on the existing Focused Site Inspection data set (USACE, 2009)to further define boundaries of certain GOW-related Areas of SeiConcern ("AOCs") and to provide a higher level of confidence with risk assessment decision-making. Based on the results of the ESI and associated risk assessments, hazardous substances have been City of Rosemount Final Alternative Urban Areawide Review August21,2013 Page 28 released, impacting the groundwater,surface water,soil and sediment in the study area. These releases occurred as a result of activities performed in the AOCs, and present potential risks to human health and/or the environment. A summary of the conclusions of the risk assessments is provided in the ESI. The report can be reviewed at: http://www.umorepark.umn.edu/prod/groups/ssrd/@pub/@ssrd/@umorepark/docum ents/article/ssrd article 338057.pdf x) November 2009-Phase II Investigation Report,Sites of Concern 1-3 and 6-8-Barr Engineering A Phase II Investigation was conducted to ttw determine whether historical activities at six Sites of Concern ("SOCs") identified in the UMore Mining t a', Area resulted in releases of hazardous substances 4, '� 11 `,` 4 ; or petroleum products to the environment. A total ,`4� of 66 test trenches, 15 direct-push soil borings, and „4.; 14 surface sampling locations were evaluated. No incidental odors, discoloration,or elevated headspace measurements indicative of a past release of hazardous substances or petroleum products were encountered during the field investigation. Forty-six soil samples and 10 groundwater samples were also collected and analyzed. Sampling results that slightly exceeded health risk-based regulatory screening criteria included semi-volatile organic compounds("SVOCs")were detected in one soil sample,arsenic was detected in two soil samples, and nitrate+nitrate was found in one groundwater sample. Additional investigation was recommended to further evaluate SVOC concentrations. Asbestos Containing Building Material("ACBM")was encountered during the investigation at the ground surface in locations identified in the Phase II ESA Report. The University reported the presence of ACBM to the MPCA and coordinated ACBM abatement in accordance with the University's Emission Control Plan. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/2009phaseiisocs/index.ht m xi) March 2009-Final Focused Site Inspection Report-Former Gopher Ordnance Works- United States Army Corps of Engineers-Omaha District The Final Focused Site Inspection Report("Focused SI") summarizes the results of the field and laboratory work -.. described in the July 2007 Final Sampling and Analysis Plan for the seven AOCs at the Former Gopher Ordinance Works site located in Rosemount, Minnesota. The field portion of the — Focused SI included a land survey of AOC7,sampling for the media of concern in the AOCs and background sampling for City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 29 chemicals. Analytical samples were sent to Seven Trent Laboratories for chemical analysis. The Focused SI also included a risk screening-level Human Health Risk Assessment and screening-level Ecological Risk Assessment. Based on the results of the field work and the screening-level Risk Assessments, potential hazardous substances were found to have been released impacting the groundwater,surface water,soil and sediment. These releases occurred as a result of activities performed in AOCs and there exist potential risks to human health and/or the environment. Conclusions of the screening-level Risk Assessments are provided in the full report which is available at: http://www.umorepark.um n.edu/prod/groups/ssrd/@ pu b/@ssrd/@umorepark/docu m ents/article/ssrd article 337969.pdf xii) March 2009-Limited Preliminary Assessment Report—Final—Steam Plant& Associated 26.7 Acres and Segments B,C,and D—former Gopher Ordnance Works— Rosemount, MN—U.S.Army Corps of Engineers—Omaha District A Limited Preliminary Assessment was conducted to collect information to determine if further ,4144444,44, 444444 investigation at the Steam Plant and the associated 26.7 acres surrounding the property was warranted. The USACE-Omaha District conducted site reconnaissance in July 2005 and designated the Steam Plat as a DERP-FUDS eligible AOC in August 2006. The Limited Preliminary Assessment recommended a Site Inspection project for AOC7. The purpose of the Site Inspection was not only to characterize the contaminants of concern in the Steam Plant property but to accurately locate the precise boundaries of the 26.7 acre parcel of property transferred from the Government to the Regents of the University of Minnesota in March 1961. This study recommended that further environmental research be conducted and proposed that a Site Investigate(SI) be performed on the Steam Plant and associated 26.7 acres. The full report is available at: http://www.umorepark.umn.edu/prod/groups/ssrd/C)pub/@ssrd/@umorepark/docum ents/article/ssrd article 337973.pdf xiii)October 2006—Concrete and Soil Assessment, UMore Park—Peer Engineering The Concrete and Soil Assessment was performed to: (1) quantify by volume,and assess remnant concrete GOW building foundations and walls; (2)determine possible alternatives for reuse, reconditioning and/or disposal of the concrete;and (3)evaluate the environmental condition of soils adjacent to and/or in contact with the remnant concrete foundations. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 30 Based on the concrete and soil sampling conducted as part of the Concrete and Soil Assessment,approximately 70%of the concrete remnants/structures at UMore Park are suitable for reuse without mitigation. Mitigation will be required for the remainder of the remnants/structures where the concrete is impacted or potentially impacted with asbestos and/or other hazardous materials,to allow reuse of the material. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/csa/index.htm xiv)July 2006—Phase I Environmental Site Assessment, UMore Park—Peer Engineering The Phase I Environmental Assessment("Phase I ESA")was conducted to identify Recognized g +'Y. Environmental Conditions("RECs")associated with 1 UMore Park. The Phase I ESA revealed on-site RECs, which indicate that there are existing, undefined ig ;x xgstg releases of hazardous substances and petroleum products at GOW operational/functional areas identified in prior studies,and there is a potential for unidentified soil and/or ground water impacts at UMore Park from other GOW operational/functional areas,waste sites identified by Dakota County,and past and/or present University and University tenant property use. A Phase II Environmental Site Assessment was recommended to further evaluate these RECs. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/2006phasei/index.htm xv) March 2006—Preliminary Assessment Report,Final Quitclaim Property,Former Gopher Ordnance Works,UMore Park—U.S.Army Corps of Engineers—Omaha District The Preliminary Assessment was undertaken by USACE as part of the Formerly Used Defense Sites("FUDS") Program. The purpose of the Preliminary Assessment was to collect information to determine if further investigation of the former GOW was warranted. The study area included land transferred to the University in 1947,as well as lands returned to private ownership after World War II. In the Preliminary Assessment, USACE identified six Areas of Concern("AOCs") related to GOW,and recommended that further investigation be completed in those areas. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/2006fgowassess/index.ht m City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 31 xvi)August 2003—Preliminary Environmental Investigation, Former Gopher Ordnance Works, UMore Park—Peer Engineering In 2002,the University, MPCA and Dakota County 45717-7, gF jointly funded a Preliminary Investigation of the former GOW. Peer Engineering reviewed readily P available historical information regarding the GOW, including aerial photography, .a. contemporaneous GOW,and documents past r ����` environmental studies. Based on the review, Peer identified a number of former GOW operation areas with potential for environmental impacts. Dakota County staff also completed detailed information review as well as site visits and historical aerial photograph review. Information from the aerial photograph review was mapped using GIS to allow for easy identification of locations in the field. Based on the results of the information review and subsequent discussions between the MPCA,the University and Dakota County, six GOW operational areas were tagged for initial investigation. They included the Oleum Plant,the Nitric Acid Plant,the Burning Grounds,the Waste Water Treatment Plant,the Maintenance Shops and the Primary Settling Basin. Findings from the Preliminary Investigation indicated that hazardous substances were released as a result of GOW construction, operation and demolition. The report can be reviewed at: http://www.umorepark.umn.edu/planning/SelectPublications/2003prelimeowinvest/in dex.htm 10) COVER TYPES Provide a cover type map and overlay map showing anticipated development. To assess cover types on the UMore Park property, data was obtained from the Minnesota Land Cover Classification System (MLCCS). The data is based on a combination of aerial photograph review and on-the-ground verification of cover types (see Figure 10-1). The MLCCS data was translated into the Land Cover Types shown in Table 10-1 in order to be consistent with the classifications used in the UMore Park Sand and Gravel Resources Final Environmental Impact Statement. The proposed mining operations addressed in the EIS in the western portion of the property will substantially modify the current landscape. Accordingly,the post mining landscape pattern which includes cropland and open water has been used to depict overall site cover types. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 32 Table 10-1. Land Cover Land Cover Acres Bare Ground 27.14 Brushland/Grassland with Sparse Trees 850.35 Cropland 2,521.35 Forest-Plantation 66.94 Forest-Woodland 230.44 Herbaceous/Shrub Wetland 0.93 Impervious<25%with Vegetation 73.38 Impervious>25% 46.29 Native Shrubland 5.53 Non-native Grassland 824.14 Non-native Shrubland 0.00 Open Water 259.16 Wetland 16.73 TOTAL 4,922.39 Figures 10-2, 10-3,and 10-4 show Concept Plans 1 through 3 with post mining reclamation cover types as a map overlay. The resulting impacts on land cover types are almost identical on all of the three concepts. Open space corridors that are integral to the future development pattern have been identified based on natural resource data. Accordingly,almost all of the existing wetlands,forest areas, and substantial areas of herbaceous cover lie within open space corridors are intended to be preserved. 11) FISH,WILDLIFE,AND ECOLOGICALLY SENSITIVE RESOURCES a. Identify fish and wildlife resources and habitats on or near the site and describe how they would be affected by the project. Describe any measures to be taken to minimize or avoid impacts. b. Are any state(endangered or threatened)species,rare plant communities or other sensitive ecological resources such as native prairie habitat,colonial waterbird nesting colonies or regionally rare plant communities on or near the site? ®Yes ❑ No If yes,describe the resource and how it would be affected by the project. Indicate if a site survey of the resources has been conducted and describe the results. If the DNR Natural Heritage and Nongame Research program has been contacted give the correspondence reference number: ERDB 20060789 . Describe measures to minimize or avoid adverse impacts. i) Existing Conditions The existing fish,wildlife,and ecologically sensitive resources have been analyzed based on previous studies, historical aerial photos, information from the DNR,and a site visit during July 2012. In addition,a separate environmental review was completed for the western-most third of the UMore site where sand and gravel mining are anticipated to occur. A separate Environmental Impact Statement(EIS)was completed for the mining project(University of City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 33 Minnesota,2010). For purposes of this AUAR,the post-mining conditions land use was used as the existing conditions for this analysis. The habitat on site is described below. • Wetlands: Based on the National Wetlands Inventory database and the post-mining conditions,the existing site contains approximately 17 acres of wetland. All of the wetlands appear to be isolated and not connected to other water resources. No DNR Public Waters are located within the site. Most of the wetlands within the UMore site are located on agricultural land and are likely drained or highly degraded, but still may provide some habitat for species accustomed to disturbance. In the post-gravel mining existing conditions,there will be a large (260 acre)open water body present in the western portion of the site as shown on Figure 10-1. Figure 11-1 shows the National Wetlands Inventory within the study area. • Forest and Woodland Communities: Based on the Dakota County Minnesota Land Cover Classification System (MLCCS), approximately 296 acres of forest or woodland communities exist on the site. Many of these wooded areas are planted and serve as wind breaks between buildings or tree lines between agricultural fields. Many of the forests contain green ash, boxelder,cottonwood,and mixed conifers but are disturbed and of low quality,with invasive species such as buckthorn growing throughout the understory. An oak woodland of slightly higher quality is located in the northeast corner of the UMore site. This woodland is also listed in the Department of Natural Resources Minnesota County Biological Survey(MCBS)Sites of Biodiversity Significance database (Figure 11-1),although it is described as being below the minimum biodiversity significance threshold. • Grassland/Shrubland: Based on the Dakota County MLCCS and the July 2012 site visit, approximately 855 acres of grassland and mixed shrubland exist within the site. The grassland areas are primarily dominated by non-native species, such as smooth brome. While many of these areas are fragmented by agricultural land, larger tracts of grassland and mixed shrubland exist near the center of the site, in the footprint of the former Gopher Ordnance Works site. Wildlife observed during the site visit included American goldfinch,American crow,chipping sparrow, mourning dove,various species of warblers, turkeys, and tree frogs. Various signs of larger species of wildlife,such as deer,were also visible throughout the grassland areas. • Agricultural Areas: Based on the Dakota County MLCCS and the July 2012 site visit, approximately 2,520 acres of agricultural land exists within the site. This agricultural activity is located throughout most of the western and southern portions of the site,with various smaller fields located in the eastern and northern areas. Much of the area that is now under agricultural production has been since the early 1900s. The agricultural areas are expected to provide little habitat,except for resting areas during bird migration. The area provides limited cover with an occasional and monotypic food source. The regular farming operations result in wildlife at the site that are accustomed to frequent disturbance. • Rare Features/Endangered Species:A review of the DNR-licensed Natural Heritage Information System (NHIS; License#LA-579; ERDB 20120373) revealed that two rare City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 34 features,the Blanding's turtle and the loggerhead shrike(Lanium ludovicianus)were documented near or within the UMore site.The correspondence with the DNR is included in Appendix B. The DNR has no record of the turtles within the study area, but they have been reported in the vicinity of the site and the DNR indicated the site could also contain turtles if suitable habitat exists. Blanding's turtles are a state-listed threatened species and require both wetland and upland habitats to complete their lifecycle. They can also travel up to and over a mile from wetlands. The DNR's review states that the site contains several wetlands. However,of the nearly 5,000 acres,approximately 17 acres are wetland. Based on this, it seems that the project area is not ideal for turtles. Information from the DNR also indicates that loggerhead shrike,a state-listed threatened bird species that prefers dry upland prairie or open grassland with scattered hedgerows, shrubs, and small trees,were observed in the area during breeding season. Given the presence of grassland and shrubland areas scattered throughout agricultural land and the adjoining trees associated with the windbreaks within the study area,this area could be suitable for loggerhead shrike. Potential impacts to loggerhead shrike were also documented in the UMore Park Sand and Gravel Resources EIS(2010). The EIS concluded that given the lack of open grassland,suitable nesting trees,and limited hunting perches, the habitat within the proposed mining area (the western portion of the size encompassing 1,700 acres)was not suitable to loggerhead shrike. Additionally,a loggerhead shrike survey(Barr, 2010)was completed in the eastern side of the study area as part of the environmental review in that area for the University of Minnesota's wind turbine project. No shrikes or evidence of shrikes were identified in the area. The US Fish and Wildlife Service was also consulted regarding federally threatened and endangered species via their online Section 7 Consultation process. Based on this consultation,two federally-listed species occur within Dakota County. These species are summarized below. o Higgins eye pearlymussel(Lampsilis higginsii), a federally endangered species, is found within the Mississippi River. Mussels can be affected by changes in water flow or water quality. The Higgins eye pearlymussel is also a state listed endangered species, but was not documented within the UMore site. o Prairie bush clover(Lespedeza leptostachya) is a federally threatened species which grows in native prairies on well-drained soils. Prairie bush clover is also a state listed threatened species, but was not documented within the UMore site. The Department of Natural Resources (DNR)Central Region's Regionally Significant Ecological Areas (RSEA)database, DNR's MCBS Sites of Biodiversity Significance,and the DNR publication "Tomorrow's Habitat for the Wild and Rare:An Action Plan for Minnesota Wildlife" were reviewed for occurrences of features within the UMore site. These features are summarized below. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 35 o Regionally Significant Ecological Areas: In 2003,the Minnesota DNR conducted a landscape-scale assessment of the seven-county metro area to identify ecologically significant terrestrial and wetland areas. This resulted in the Regionally Significant Ecological Areas(RSEA) mapping for the Twin Cities area. This assessment was based on LandSat data and aerial photo interpretation of grassland. In 2008,the DNR updated the assessment using MLCCS data. The RSEA gives rankings between 1(lowest)to 3 (highest). Five sites identified within the UMore site had a ranking of 1. A sixth site, bordering the north-central portion of the site,was given a ranking of 2.These RSEA areas are on the western portion of the Dakota County Technical College (DCTC)as well as the central portion of the study area. These areas have either already been developed (as is the case with DCTC)or contain areas where the former Gopher Ordnance Works(GOW)was located and some remnants of the GOW still remain in portions of this area. Based on a field review of the RSEA areas,they either contained developed land, have previously been disturbed, or contain remnants of the GOW.Additionally, some of these areas have been altered since the RSEA data was compiled as noted on Figure 11-1. o Minnesota County Biological Survey: The DNR's MCBS Sites of Biodiversity Significance database identifies plant communities that are considered significant at a statewide level. Factors taken into account include the number of rare species documented within a site,the quality of the native plant communities,the size of the site,and the context of the site within the landscape. Sites are given a ranking of Outstanding, High, Moderate,and Below. One MCBS Site of Biodiversity Significance, an oak woodland,was identified within the UMore site (Figure 11-1). This site was given a ranking of"Below". A ranking of"Below" means that the site does not meet the minimum biodiversity threshold for statewide significance, but still may have conservation value at a local level. o "Tomorrow's Habitat for the Wild and Rare:An Action Plan for Minnesota Wildlife": This document outlines Species of Greatest Conservation Need and Habitat of Greatest Conservation Need. Oak Savanna habitat and upland deciduous forest is noted within this publication. The oak woodland identified in by the MCBS is in this category. • Surrounding Resources:The land that borders the UMore site to the north,east,and west consists mainly of agricultural land use with some urban/residential uses to the northwest,where the City of Rosemount is located. The land that borders the UMore site to the southwest is also mainly agricultural,with some MCBS Site of Biodiversity Significance and RSEA sites located further south. In general,these sites are of higher quality than those located within the UMore site. To the southeast,the Vermillion Highlands Research, Recreation, and Wildlife Management Area borders the UMore site. This area is over 2,800 acres in size and is managed by the DNR and University of Minnesota to provide recreation opportunities for the public and research opportunities for the University. A few MCBS Sites of Biodiversity Significance and RESAs are located within the WMA,although these are of lesser quality City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 36 than those areas located to the west. Through the joint management and planning by the University of Minnesota and DNR, proposed master plans have been developed that include buffers between the UMore study area and Vermillion Highlands. These buffers re reflected in the land use scenarios for UMore. More information about Vermillion Highlands and the master planning of this area can be found at http://www.vermillionhighlands.umn.edu/about/index.htm. • Rosemount Natural Area Identification The City of Rosemount developed a Natural Area Identification map(Figure 11-2). Some of the land within the study area is identified on this map as highest priority, lower priority, and the Mississippi River Greenway. Most of the area that is identified on the map is ranked as a lower priority. Scenario 1 This scenario allows for a population of approximately 35,000 people and employment for approximately 18,000. Agricultural land uses would be removed and replaced with low, medium, and high density residential areas,office/business parks,and light industrial. With this scenario,approximately 940 acres of open space and 260 acres of open water would remain. The open space would be located throughout the UMore site,and would create habitat corridors for wildlife from north to south as well as west to east. Much of the land that borders the Vermillion Highlands WMA would remain as open space as well. The 260 acres of open water space would be located in the west and southwest portion of the UMore site, in an area that is anticipated to be mined in the interim. Any impacts as a result of this potential mining operation has been documented in the EIS dated October 2010. This open water area would be surrounded by green space and provide recreational opportunities for the public as well as wildlife habitat. The area of biodiversity significance in the northeast corner would not be impacted. Various portions of the RSEAs would remain as open space as well depending on the need to conduct contamination remediation in the area(see Section 9 of the AUAR for discussion on pollutants and past land uses). Based on state and federal requirements,the wetlands would likely remain intact with some anticipated impact and resulting mitigation. There would be opportunities to create habitat with storm water management requirements as part of development. The main wildlife habitat impact from these scenarios would be the potential reduction in loggerhead shrike habitat, a state-listed threatened species, if mitigation is not provided. Scenario 2 This scenario allows for a population of approximately 25,000 people and employment for approximately 18,000. Similar to Scenario 1, agricultural land uses will be replaced with low, medium,and high density residential areas, office/business parks,and light industrial. The overall land cover will be identical to Scenario 1,with the difference being in population density. The area of biodiversity significance in the northeast corner would not be impacted with this scenario. Various portions of the RSEAs would remain as open space as well, depending on the need to conduct contamination remediation in the area (see Section 9 of the AUAR for discussion on pollutants and past land uses). Based on state and federal requirements,the wetlands would likely remain intact with some anticipated impact and resulting mitigation. There would be opportunities to create habitat with storm water City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 37 management requirements as part of development. Again,the main wildlife habitat impact from these scenarios would be the potential reduction in loggerhead shrike habitat if mitigation is not provided. Scenario 3 This scenario allows for a population of approximately 31,000 people and employment for approximately 24,000. Again,the agricultural land uses would be removed and replaced with low, medium,and high density residential areas,office/business parks,and light industrial. Compared with Scenarios 1 and 2,this scenario would create more office/business park and light industrial space. The amount and location of green space and open water would remain the same as outlined in Scenarios 1 and 2. Again,similar to the first two scenarios,the area of biodiversity significance in the northeast corner would not be impacted and various portions of the RSEAs would remain as open space as well depending on the need to conduct contamination remediation in the area (see Section 9 of the AUAR for discussion on pollutants and past land uses). Based on state and federal requirements,the wetlands would likely remain intact with some anticipated impact and resulting mitigation. There would be opportunities to create habitat with storm water management requirements as part of development. The main wildlife habitat impact from these scenarios would be the potential reduction in loggerhead shrike habitat if mitigation is not provided. Scenario 4 Scenario 4 calls for the UMore site remaining under the current comprehensive plans of both the City of Rosemount and Empire Township. Rosemount's plan categorizes the UMore site as Agricultural Research and states, "This land use designation is used solely for the UMore Park Property that is owned and operated by the University of Minnesota. It is anticipated that, after the UMore Park Master Plan is created and adopted,a major Comprehensive Plan amendment will be conducted to re-designate the land to its appropriate land use category." The Empire Township Comprehensive Plan categorizes the UMore Park property as University of MN (UMORE)and is also designated as being in a Mining Overlay Area.The plan states,"The University of Minnesota Outreach, Research and Education Park(UMore Park)consisted of nearly 4,530 acres in Empire Township.Approximately 2,830 acres of land has become part of the Vermillion Highlands Wildlife Management Area (WMA)jointly operated by the University and the DNR for agricultural research and WMA usage.The remaining 1,700 acres of UMore Park is being planned for mineral extraction and eventual urbanization.The University has completed a two-year long study of potential urban uses in Empire and the City of Rosemount (additional 2900 acres).The UMore Property in Empire is also included in the Mineral Extraction Overlay area." Based on these comprehensive plans, land cover under Scenario 4 would generally remain in its existing state,with the possible exception of the area within Empire Township that is designated as being in the Mining Overlay Area. Any potential ecological resource impacts as a result of mining, and potential mitigation measures,were discussed in the EIS completed in October 2010. With regard to the remaining areas of the UMore site, because land use would not change substantially,there would not likely be any impacts to ecological resources. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 38 B. Fish,Wildlife,and Ecologically Sensitive Resources Mitigation Plan The following mitigation measures will be employed for Scenarios 1-3: • Wetlands will need to be delineated in conformance with the Wetland Conservation Act as part of the development process. Depending on the location of the wetlands,either the City of Rosemount or Empire Township will review and verify the wetland delineation. • Wetland impact is anticipated to be minimized to the maximum extent practical and feasible throughout the review area. If wetland impacts are proposed,wetland mitigation will be required of the project proposer pursuant to current wetland regulations and City or Township requirements. • The City of Rosemount and Empire Township require buffers around wetlands at a width dependent upon the wetland's management classification, per their respective ordinances. • Storm water management features should incorporate native plantings of grasses,trees, and shrubs. • A loggerhead shrike survey is recommended by the DNR as part of a development project if disturbance would be planned during the nesting season (nesting season is generally April through July). The DNR will need to be contacted before any survey work is completed. • While ideally suited habitat for Blanding's turtles is not apparent within the study area, they have been noted near the study area and some habitat in the area could be marginally suitable. Development projects should take into consideration the use of oversized culverts,surmountable curbs, and revegetation with native species. • Development plans for the northeastern corner of the site will consider incorporating the oak woodland that has been identified on the County Biological Survey as open space to protect or enhance this habitat to the extent practical. • Development plans will consider incorporating the existing or remaining wildlife habitat areas within the Regionally Significant Ecological Areas (RSEA)and other areas within the site as open space to the extent practical. However,depending on environmental remediation that may be required,disturbance of these areas may be necessary. • Tree removal within the study area that occurs as part of development will need to meet the requirements of the City's or Township's Tree Preservation Ordinance. 12) PHYSICAL IMPACTS ON WATER RESOURCES Will the project involve the physical or hydrologic alteration (dredging,filling,stream diversion,outfall structure,diking,and impoundment)of any surface waters such as a lake, pond,wetland,stream or drainage ditch? ®Yes ❑ No City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 39 If yes,identify water resource affected. Describe alternatives considered and proposed mitigation measures to minimize impacts. Give the DNR Protected Waters Inventory(PWI) number(s)if the water resources affected are on the PWI. There are very few wetland resources within the study area (17 acres within the 5,000 acre study area). There are no DNR Public Waters within the study area. No specific development plans have been developed for the study area. Both state and federal wetland regulations require avoidance and minimization of wetland impact. However,with anticipated infrastructure needed to serve the study area such as roads and utilities, it is anticipated some wetland impact would occur. Wetland impact would be subject to State regulations through the Wetland Conservation Act (WCA). Additionally,any impacts within the City of Rosemount would be subject to the City's Wetland Management Plan. Impacts could also be regulated by the US Corps of Engineers through Section 404 of the Clean Water Act. Wetland impact would need to be avoided and minimized to the greatest extent practical. 13) WATER USE Will the project involve installation or abandonment of any water wells,connection to or changes in any public water supply or appropriation of any ground or surface water(including dewatering)? ®Yes ❑ No If yes,as applicable,give location and purpose of any new wells;public supply affected, changes to be made,and water quantities to be used;the source,duration,quantity and purpose of any appropriations;and unique well numbers and DNR appropriation permit numbers,if known. Identify any existing and new wells on the site map. If there are no wells known on site,explain methodology used to determine. A. Existing Conditions Currently, private wells within the study area serve the agricultural, residential,irrigation, commercial and public water use needs. According to a review of the County Well Index, the study area contains some domestic use private wells utilized for potable water. There could be other existing residences in the study area that have private wells, however, no information is available regarding additional private wells beyond those listed on the County Well Index. The wells on the County Well Index are shown on Figure 13-1. Recent ground water modeling has defined the 10 year time of travel for source wellheads for wells to determine the Drinking Water Supply Management Area (DWSMA)within the City of Rosemount. The DWSMA is within a portion of the study area and was established as a part of the City's current Wellhead Protection Program as shown in Figure 13-2. The geology of the City's existing wells is consistent with other communities in the Twin Cities Metro Area. The Paleozoic sedimentary rocks around the Twin Cities Metro area have three primary aquifers(in descending order): the Prairie du Chien—Jordan,the Franconian- Ironton-Galesville (FIG), and the Mt.Simon-Hinckley. Each of these is separated by a confining layer that essentially separates the aquifers. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 40 The deepest of the three aquifers is the Mt.Simon-Hinckley.There are no geologic factors that would limit the City's use of this aquifer. However, Minnesota Statute 103G.271 Subd 4a prohibits the issuance of permits to appropriate water from this aquifer in the Metro area unless there are no feasible alternative to this source. Therefore,this aquifer is not an option for future use in Rosemount at this time. The second deepest aquifer available to Rosemount is the Franconia-Ironton-Galesville,or FIG. Due to poor water quality and low water yield,the FIG is not commonly used in the south Metro area. The yield of a new FIG well in Rosemount would be estimated in the 200- 500 gallons per minute(gpm) range. The FIG recharges slowly, and water does not move through the aquifer very efficiently resulting in limited well capacity and excessive drawdown.This can cause unanticipated well problems when adding new wells in the FIG, with the new wells frequently failing to meet production expectations and old wells decreasing in productivity.This does not preclude any FIG wells, but indicates well production expectations must be modest and the risks must be understood. The Prairie du Chien—Jordan aquifer is the highest yielding aquifer in the Metro. Although these formations have different names and are geological different the two units have been shown to be hydraulically connected. The Prairie du Chien—Jordan aquifer is present over most of the City except for a southeast-northwest trending bedrock valley that is present along the northern portion of the City,generally located from 1 to 3 miles north of Dakota County Rd.42. Unfortunately, in this area of the City where the bedrock valley is present,a continuous layer of water-bearing Prairie du Chien—Jordan bedrock is absent which limits the usefulness of the aquifer by the City. Despite limitations, Prairie du Chien—Jordan wells are optimal because they generally produce five to ten times more water per foot of drawdown than FIG wells. All of Rosemount's existing operational wells are located in the Jordan aquifer,which underlies the Prairie du Chien,and all future wells are anticipated to be in the Jordan aquifer also. Existing and future demands for the entire City have been included in the City's Comprehensive Water System Plan (CWP). Future infrastructure needs for the City, encompassing the AUAR study area,were developed in the CWP. As a part of the CWP,well fields were preliminarily located to the north and to the west of the study area. The well field locations were selected due to their proximity to the future water treatment plant sites. The City's water system is divided into two pressure zones,western and eastern,and is connected through a pressure reducing valve(PRV). The western pressure zone is the higher elevation zone,and is able to serve the entire study area. There are three water towers in the west pressure zone with an overflow elevation of 1,105.00 feet and there is one tower in the east pressure zone with and overflow elevation of 1,050.00 feet. Service to future development outside the study area has been addressed in the CWP. The water system currently has eight wells,two in the eastern zone and six in the western. Well capacities range from 400 gpm to 1,600 gpm with a system firm capacity(assumes the largest well out of service)of 6500 gpm and a western zone system firm capacity of 5,700 gpm. Two wells are located in the eastern pressure zone with a capacity of 400 gpm each. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 41 The western zone is the high elevation zone,so wells in the western pressure zone can serve either pressure zone,since pressure is reduced through the PRV for the eastern pressure zone. The eastern wells are designed to serve the eastern zone only, but could supply water at very low pressure to the western zone during an emergency situation.The PRV separating the two systems allows for each system to be supplied from either the eastern or western wells, but water typically flows from the western pressure zone to the eastern. Well firm capacity should meet or exceed maximum day demands. Historical water usage for the City has indicated average water use of 95 gallons per capita per day(gpcd)with 3 people/unit for residential units, 800 gallons per acre per day(gpad)for commercial property, and 250 gpad for public/institutional property. Also, historical maximum day to average day ratio (peaking factor) has been approximately 3.0 and is expected to decrease in the future as the City grows and possibly implements water conservation programs as indicated in the CWP. Existing system demands are shown below in Table 13-1. Table 13-1. Existing Average Day Water Usage and Maximum Day Water Usage for Rosemount's Water System* Avg. Day Maximum Type Area Number Population Water Day Water yp Served of Units Served Use (GPD) Use(GPD) Residential 2400 6339 19017 1.81 5.42 Non-Residential 2511 216 0.64 1.91 Total 4911 6555 19017 2.44 7.33 *Based on the City's Comprehensive Water Plan. Average day existing water use is estimated to be 2.44 million gallons per day(MGD) (1,696 gpm) and maximum day existing water use is estimated to be 7.33 MGD (5,088 gpm). Since system well firm capacity exceeds the maximum day demand no additional wells are needed at this time. In Rosemount,when additional water storage is needed with new development,it is paid for by the developer. Water is also treated within the City's system. Treatment is paid via user water bills proportionate to the user's water usage. i) Scenario 1 Development within the study area will be connected to municipal water service in this scenario. Development within the study area consists of residential with varying densities,office and business park, light industrial, and community centers composed of residential land uses with varying densities and commercial land use. Table 13-2 below summarizes the development plans and population density assumptions to determine the water demand for the study area. As discussed in the existing conditions,it was assumed that current water usage per capita is 95 gpcd. Non-residential demands were estimated based on Metropolitan Council Environmental Service (MCES)sewer availability charge(SAC) criteria. In accordance with MCES's SAC development criteria, City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 42 each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day(GPD). The assumed maximum day demand to average day demand ratio(peaking factor) is 3.0 based on historic water demands. Future projected water demands for the study area are shown below in Table 13-2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 43 Table 13-2. Future water demand for Scenario 1 Net Gross Area Number Population/ Avg.Day Maximum Type Area Employees Water Use Day Water (ac) Served of Units Served (GPD) Use(GPD) (ac) Low Density Residential 1014 811 2840 9088 863,366 2,590,097 Low-Med Density Residential 739 591 3548 8516 809,061 2,427,184 Medium Density Residential 465 372 4465 10716 1,018,083 3,054,248 High Density Residential 6 5 113 158 14,934 44,801 Neighborhood Center Low-Med Density Residential 19 15 77 185 21,125 63,374 Medium Density Residential 64 51 513 1231 140,326 420,977 High Density Residential 32 26 615 862 81,769 245,306 Retail/Commercial/Office 13 10 447 8,763 26,288 Village Center Medium Density Residential 44 35 352 845 96,334 289,002 High Density Residential 50 40 966 1352 128,409 385,227 Retail/Commercial/Office 31 25 1565 30,658 91,975 Community Center Medium Density Residential 17 14 137 330 37,562 112,686 High Density Residential 11 9 220 308 29,386 88,157 Retail/Commercial/Office 86 69 2137 41,808 125,425 Regional Center Medium Density Residential 8 7 66 158 17,985 53,954 High Density Residential 8 7 158 221 21,029 63,088 Retail/Commercial 148 118 3680 72,044 216,131 Office/Business Park 284 227 8247 161,399 484,198 Light Industrial 180 144 2166 42,399 127,196 Open Space 939 939 NA NA NA NA Open Water 259 259 NA NA NA NA ROW(Collectors/Arterials) 492 492 NA NA NA NA Local Streets/Neighborhood Parks 644 NA NA NA NA Total 4911 4911 52212 3,636,438 10,909,313 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 44 Based on the water use associated with Scenario 1, average day water demand is estimated to be 3.64 MGD(2,525 gpm), and maximum day water demand is estimated at 10.91 MGD (7,576 gpm)for the proposed study area. Current average day demand in Rosemount is 2.44 MGD(1,696 gpm) and maximum day demand is 7.33 MGD (5,088 gpm). Ground elevations in the study area are consistent with existing western pressure zone elevations therefore,the entire study area would be served by the western pressure zone and all demands were calculated as western pressure zone demands. There are significant topography variations within the study area, and a few properties with elevations below 910 feet may require an individual PRV as shown in Figure 13-3. UMore development would result in 3.64 MG of additional storage needs. Current system storage is 3.5 MG. It is recommended that system storage should meet or exceed average day demand based on ten state standards and American Water Works Association (AWWA) recommendations. This development would increase the City's average day demand from approximately 2.44 MGD to 6.0 MGD. Because the CWP anticipated some development, but not that depicted in Scenario 1,an additional 2.5 MG of storage would be needed to serve the entire city upon full development of the study area,and constructed in a location to best serve the entire community. The CWP indicates a 1.5 MG elevated storage tower to be constructed in the western portion of the study area,and ground storage reservoirs to be constructed at the proposed Water Treatment Plant (WTP) locations. Since the WTPs have not yet been constructed, it is assumed water towers would be constructed for storage needs. So, in addition to the 1.5 MG tower planned in the CWP, an additional 1.0 MG elevated tower is proposed to be located in the eastern portion of the study area. Development of the study area alone would generate a maximum day demand of 10.91 MGD (7,576 gpm)and average day of 3.636 MGD (2,525 gpm). Well firm capacity should meet or exceed maximum day water use, resulting in the need for seven (7)to eight(8)wells to supply the study area. The City's total maximum day demand upon complete development of the study area would be 18.24 MGD(12,664 gpm)and average day of 6.078 MGD (4,221 gpm). As discussed previously,current western zone system well firm capacity is 5,700 gpm. The full development of the study area will require an additional 6,964 gpm of well capacity to be constructed. If individual well capacities are similar to those constructed in the past(1,000 gpm each),then approximately seven (7)wells will be required to serve the entire city upon full development of the study area. The well capacity required to meet the study area demand was located in well fields with locations predetermined in the CWP. Initial water system modeling evaluation indicated the ultimate water system layout included in the CWP did not have capacity to deliver adequate domestic operating pressure. Therefore,two water system design alternatives were reviewed and are described below. As part of the Rosemount CWP,approximately 2.9 MG of storage and 6 wells were planned to serve the study area. Estimated water demands and resulting supply and City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 45 storage necessary to serve development included in Scenario 1 differs from what was planned in the CWP,as shown in Table 13-3. Table 13-3.Comparison of supply and storage included in CWP and Scenario 1. Rosemount Total Study Rosemount Area Included Area Included Area Included in CWP (2007) in Scenario 1 in Scenario 1 Area (Acres) 3107 4911 3107 Average Day Demand (MGD) 2.93 3.64 2.56 Maximum Day Demand (MGD) 8.79 10.91 7.67 Estimated Wells Required 6 7 to 8 5 to 6 Estimated Storage Required (MG) 2.93 3.64 2.56 Alternative 1 This alternative maintained CWP planned well locations. Three wells will be located in the southwestern well field and four wells in the northwestern well field. Development within the project area will require the construction of trunk water mains. The anticipated trunk water main layout and sizes are shown in Figure 13-3(Alt. 1). These trunk mains would outline the proposed study area,and are sized to serve the ultimate Rosemount water system. The pipe network follows the ultimate water system layout included in the CWP, however to supply adequate service,a 16"trunk main and a few 12"trunk mains connecting to the 16"trunk main were added to the northeast corner of the study area. Additional 8" distribution mains that would serve development and interconnect the trunk main loop are not shown. Existing residents will be given the opportunity to connect to the municipal water system. Alternative 2 In an attempt to maintain pipe sizes and layouts consistent with the ultimate water system layout included in the CWP,this alternative required one well to be located in the study area. Three wells will be located at each the southwest and northwest well fields. Development within the project area will require the construction of trunk water mains. The anticipated trunk water main layout and sizes are shown in Figure 13-3(Alt.2). These trunk mains would outline the proposed study area, and are sized to serve the ultimate Rosemount water system. Some additional 8" distribution mains that would serve development and interconnect the trunk main loop are not shown. ii) Scenario 2: This scenario is similar to Scenario 1. The land use areas are the same as Scenario 1, however the development densities have been decreased. As discussed in the existing conditions, it was assumed that water usage per capita is 95 gpcd. Non-residential demands were estimated based on Metropolitan Council Environmental Service(MCES) sewer availability charge (SAC) criteria. Each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day (GPD). The assumed maximum day demand to City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 46 average day demand ratio(peaking factor) is 3.0 based on historic water demands. Table 13-4 shows the projected future water demands for Scenario 2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 47 Table 13-4. Future water demands for Scenario 2 Maximum Gross Net Population/ Avg. Day Type Area Area Number Day Employees Water Served of Units Water (ac) (ac) Served Use(GPD) Use(GPD) Low Density Residential 1014 811 1826 5842 554,990 1,664,970 Low-Med Density Residential 739 591 2809 6742 640,490 1,921,470 Medium Density Residential 465 372 3349 8037 763,515 2,290,545 High Density Residential 6 5 85 118 11,153 33,459 Neighborhood Center Low-Med Density Residential 19 15 73 s 175 16,625 49,875 Medium Density Residential 64 51 462 1108 105,260 315,780 High Density Residential 32 26 462 646 61,370 184,110 Retail/Commercial/Office 13 10 447 8,763 26,288 Village Center Medium Density Residential 44 35 317 760 72,200 216,600 High Density Residential 50 40 724 1017 96,615 289,845 Retail/Commercial/Office 31 25 1565 30,658 91,975 Community Center Medium Density Residential 17 14 124 297 28,215 84,645 High Density Residential 11 9 165 231 21,945 65,835 Retail/Commercial/Office 86 69 2137 41,808 125,425 Regional Center Medium Density Residential 8 7 59 142 13,490 40,470 High Density Residential 8 7 118 166 15,770 47,310 Retail/Commercial 148 118 3680 72,044 216,131 Office/Business Park 284 227 8247 161,399 484,198 Light Industrial 180 144 2166 42,399 127,196 Open Space 939 939 NA NA NA NA Open Water 259 259 NA NA NA NA ROW(Collectors/Arterials) 492 492 NA NA NA NA Local Streets/Neighborhood Parks 644 NA NA NA NA Total 4911 4911 41958 2,758,709 8,276,127 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 48 Based on the water use associated with Scenario 2,average day water demand is estimated to be 2.76 MGD(1,916 gpm), and maximum day water demand is estimated at 8.28 MGD(5,747 gpm)for the proposed study area. Current average day demand is 2.44 MGD(1,696 gpm)and maximum day demand is 7.33 MGD (5,088 gpm). Similar to the Scenario 1 analysis,the study area will be served by the western pressure zone. A few properties with elevations below 910 feet may require an individual PRV as shown in Figure 13-4. Evaluation methods are described in detail in the Scenario 1 section. Development of the study area alone would generate a maximum day demand of 8.28 MGD (5,747 gpm) and average day of 2.758 MGD (1,916 gpm). Well firm capacity should meet or exceed maximum day water use, resulting in the need for six(6)wells to supply the study area. The City's total maximum day demand upon complete development of the study area would be 15.60 MGD (10,835 gpm)and average day of 5.20 MGD(3,612 gpm). As in the Scenario 1 evaluation,current western zone system firm capacity is 5,700 gpm and should be increased to meet the maximum day water demand of 10,835 gpm. Approximately five wells would be needed to serve the entire city upon full development of the study area,which is consistent with the CWP projections. The analysis(which included water system modeling) indicated that three wells should be located at the southwest well field and two wells at the northwest well field, in accordance with the CWP. Trunk and distribution water main development would be in accordance with the ultimate water system layout included in CWP. The anticipated trunk water main layout and sizes are shown in Figure 13-4. This development would result in 2.76 MG of additional storage needs. The additional storage recommended to serve the entire city upon full development of the study area would be 1.70 MG in this scenario. The system was designed with one 2.0 MG elevated tower located in the western section of the study area. As part of the Rosemount CWP,approximately 2.9 MG of storage and 6 wells were planned to serve the study area. Estimated water demands and resulting supply and storage necessary to serve development included in Scenario 1 differs from what was planned in the CWP,as shown in Table 13-5. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 49 Table 13-5.Comparison of supply and storage in cluded in CWP and Scenario 2. Rosemount Total Study Rosemount Area Included Area Included Area Included in CWP (2007) in Scenario 2 in Scenario 2 Area (Acres) 3107 4911 3107 Average Day Demand (MGD) 2.93 2.76 1.98 Maximum Day Demand (MGD) 8.79 8.28 5.93 Estimated Wells Required 6 6 4 to 5 Estimated Storage Required (MG) 2.93 2.76 1.98 iii) Scenario 3 Development densities in Scenario 1 and 3 were consistent, but land use areas and locations are different. Land uses in the eastern portion of the study area were changed from lower density residential to higher densities or to industrial or business park. As discussed in the existing conditions, it was assumed that water usage per capita is 95 gpcd. Non-residential demands were estimated based on Metropolitan Council Environmental Service(MCES)sewer availability charge(SAC)criteria. Each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day(GPD). The assumed maximum day demand to average day demand ratio(peaking factor) is 3.0 based on historic water demands. Table 13-6 shows the projected future water demands for Scenario 3. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 50 Table 13-6. Future water demands for Scenario 3 Net Gross Area Number Population/ Avg. Day Maximum Type Area Served of Units Employees Water Use Day Water (ac) (ac) Served (GPD) Use(GPD) Low Density Residential 784 627 2196 7027 667,565 2,002,695 Low-Med Density Residential 755 604 3625 8700 826,500 2,479,500 Medium Density Residential 412 330 2958 9498 902,310 2,706,930 High Density Residential 6 5 113 158 15,010 45,030 Neighborhood Center Low-Med Density Residential 19 15 92 222 21,090 63,270 Medium Density Residential 64 51 615 1477 140,315 420,945 High Density Residential 32 26 615 862 81,890 245,670 Retail/Commercial/Office 13 10 447 8,763 26,288 Village Center Medium Density Residential 44 35 422 1014 96,330 288,990 High Density Residential 50 40 966 1352 128,440 385,320 Retail/Commercial/Office 31 25 1565 30,658 91,975 Community Center Medium Density Residential 17 14 165 396 37,620 112,860 High Density Residential 11 9 220 308 29,260 87,780 Retail/Commercial/Office 86 69 2137 41,808 125,425 Regional Center Medium Density Residential 8 _ 7 79 189 17,955 53,865 High Density Residential 8 7 158 221 20,995 62,985 Retail/Commercial 148 118 3680 72,044 216,131 Office/Business Park 462 370 13421 262,645 787,934 Light Industrial 269 215 3233 63,277 189,830 Open Space 939 939 NA NA NA NA Open Water 259 259 NA NA NA NA ROW(Collectors/Arterials) 492 492 NA NA NA NA Local Streets/Neighborhood Parks 644 NA NA NA NA Total 4911 4911 55907 3,464,474 10,393,422 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 51 Based on the water use associated with Scenario 3,average day water demand is estimated to be 3.46 MGD(2,406 gpm), and maximum day water demand is estimated at 10.39 MGD(7,217 gpm)for the proposed study area. Current average day demand is 2.44 MGD(1,696 gpm)and maximum day demand is 7.33 MGD (5,088 gpm). Similar to the Scenario 1 and 2 analyses,the study area will be served by the western pressure zone. A few properties with elevations below 910 feet may require an individual PRV as shown in Figure 13-5. Evaluation methods are described in detail in the Scenario 1 section. Development of the study area alone would generate a maximum day demand of 10.39 MGD(7,217 gpm)and average day of 3.464 MGD (2,406 gpm). Well firm capacity should meet or exceed maximum day water use, resulting in the need for seven(7)to eight(8)wells to supply the study area. The City's total maximum day demand upon complete development of the study area would be 17.720 MGD (12,305 gpm)and average day of 5.91 MGD (4102 gpm). Similar to the Scenario 1 and 2 evaluation, current western zone system firm capacity is 5,700 gpm and should be increased to meet the maximum day water demand of 12,305 gpm. Approximately six wells would be needed to serve the entire city upon full development of the study area. Three wells would be located at each of the southwest and northwest well fields, in accordance with the CWP. Trunk and distribution water main development would be in accordance with the ultimate water system layout included in the CWP. The anticipated trunk water main layout and sizes are shown in Figure 13-5. This development would result in 3.46 MG of additional storage needs. The additional storage required to serve the entire city upon full development of the study area would be 2.41 MG in this scenario. Storage tank size and placement would be consistent with Scenario 1,with one 1.5 MG elevated tower located in the western section of the study area and one 1.0 MG elevated tower located in the eastern section. As part of the Rosemount CWP,approximately 2.9 MG of storage and 6 wells were planned to serve the study area. Estimated water demands and resulting supply and storage necessary to serve development included in Scenario 3 differs from what was planned in the CWP,as shown in Table 13-7. Table 13-7.Comparison of supply and storage included in CWP and Scenario 3. Rosemount Total Study Rosemount Area Included Area Included Area Included in CWP (2007) in Scenario 3 in Scenario 3 Area (Acres) 3107 4911 3107 Average Day Demand (MGD) 2.93 3.46 2.41 Maximum Day Demand (MGD) 8.79 10.39 7.24 Estimated Wells Required 6 7 to 8 5 Estimated Storage Required (MG) 2.93 3.46 2.41 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 52 B. Water Use Mitigation Plan • Extend trunk water main services as shown in Figures 13-3 through 13-5 consistent with the CWP. For Scenario 1,an additional 16"trunk main may be extended from the intersection of Akron Avenue and CSAH 42 to approximately 2,600 feet east of the intersection of CSAH 42 and Blaine Avenue (Figure 13-3—Alt. 1). • 6-8 municipal wells are recommended as a result of this development,with up to 2 of the wells being in addition to what was planned as part of the CWP. For Scenario 1, one well may be located within the study area depending upon the trunk water mains extended to the development (see Figure 13-3—Alt.2). Well fields have been preliminarily allocated to the north and to the east of the study area close to the future water treatment plants, in accordance with the CWP. • 2,750,000 to 3,500,000 gallons of water system storage is recommended as a result of this development,with up to 700,000 gallons being in addition to what was planned as part of the City's CWP. The storage should be constructed in a location to best serve the entire City and overall water system. • Any abandoned wells found within the study area will be sealed in accordance with with Dakota County Ordinance No. 114,Well and Water Supply Management, and Minnesota Department of Health guidelines. • In accordance with the City's Wellhead Protection Plan (WHPP),continue protection of the existing Drinking Water Supply Management Area(DWSMA) located in the study area as shown in Figure 13-2. A DWSMA will be established for future wells as they are constructed and the WHPP is updated. • There exists potential for future interconnection of the proposed water system in the study area between the City of Rosemount and Empire Township. Additional water system assessments and agreements between the City of Rosemount and Empire Township may be required if further development interests beyond the presented material were to arise. • Industrial and Business Park land use water demands can be highly variable depending upon the business operation or manufacturing process employed at each property. At the time of the five year AUAR evaluation,water demands from individual properties in the Industrial and Business Park land use areas should be evaluated and estimated future demands revised if necessary. • Any new wells(supply, dewatering, monitoring, or other)shall be constructed in accordance with Dakota County Ordinance 114, Minnesota Statutes Chapter 1031 and Minnesota Rules Chapter 4725 14) WATER-RELATED LAND USE MANAGEMENT DISTRICTS City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 53 Does any part of the project involve a shoreland zoning district,a delineated 100-year flood plain,or a state or federally designated wild or scenic river land use district? n Yes ® No If yes,identify the district and discuss project compatibility with district land use restrictions. There are no shoreland districts or wild and scenic river districts within the study area. Figure 14-1 shows the Federal Emergency Management Agency(FEMA)designated 100-year and 500- year floodplain and the Dakota County floodplain map. These areas are within the portion of the study area within Empire Township. No impacts to floodplain are anticipated. However, if impacts occur,conformance with Dakota County ordinances will be needed and mitigation in conformance with Empire Township regulations will be required. A. Water-Related Land Use Management Districts Mitigation Measures • Any development is required to meet the standards in the local Floodplain Ordinance. 15) WATER SURFACE USE Will the project change the number or type of watercraft on any water body? n Yes ® No If yes,indicate the current and projected watercraft usage and discuss any potential overcrowding or conflicts with other uses. 16) EROSION AND SEDIMENTATION Give the acreage to be graded or excavated and the cubic yards of soil to be moved: NA acres; NA cubic yards Describe any steep slopes or highly erodible soils and identify them on the site map. Describe any erosion and sedimentation control measures to be used during and after project construction A. Existing Conditions A detailed list of the soils present on the site is provided in Item 19 and shown in Figure 19- 1. The site can be described as generally flat with some hilly areas in the north-central and northeast portions of the site. Of the soils on the site, Figure 16-1 shows the location of Highly Erodible Land (HEL). B. Scenarios 1-3 In these scenarios, much of the proposed area would be graded to construct roads, residential, and commercial/industrial areas. For all scenarios, it is anticipated that grading will be needed to accommodate building pads and storm water drainage from the area. It is anticipated that grading will be phased and there will not be mass grading of the entire site at one time. C. Scenario 4 In this scenario,the area will remain as agricultural and no grading activities would be occurring. D. Erosion and Sedimentation Mitigation Plan City of Rosemount Final Alternative Urban Areawide Review August21,2013 Page 54 • A Storm Water Pollution Prevention Plan (SWPPP)to the extent required by NPDES regulations will be needed for any development in the study area. Review of the SWPPP for each development will be required by the City or the Township. 17) WATER QUALITY—SURFACE WATER RUNOFF a. Compare the quantity and quality of site runoff before and after the project. Describe permanent controls to manage or treat runoff. Describe any storm water pollution prevention plans. b. Identify routes and receiving water bodies for runoff from the site;include major downstream water bodies as well as the immediate receiving waters. Estimate impact runoff on the quality of receiving waters. i) Procedures and Methods Followed The procedures and methods used to estimate the runoff volumes and pollutants loads within the AUAR were based on the simple method as discussed in the Minnesota Stormwater Manual and in Section III of the City of Rosemount's non-degradation plan dated December 20, 2007.The simple method provides an easy yet reasonably accurate way to estimate the pollutant loads as they change in response to development. To estimate the pollutant loads the annualized runoff volumes, pollutant concentrations from different land uses,and site areas were used.The pollutant loads were then estimated for the existing and proposed conditions to determine the change with development. The change in pollutant loads from implementing BMPs during development was incorporated into the analysis. In the City of Rosemount where areas are proposed to be developed,the runoff volume for events equal to or less than the 100-year 24-hour would be retained on-site as required by Rosemount's Plan. In reviewing the rainfall data no events were recorded over this threshold;therefore, it was assumed in the analysis that the discharge would be zero on an annual average basis. In Empire Township, it is required to retain the increase in the runoff volume from the existing conditions to the proposed conditions for the 2-year 24-hour storm event.This is the same requirement as the Vermillion River Joint Powers Organization rules.The flow weighted runoff volume was calculated for the existing conditions to determine what runoff volume needs to be retained on-site to match existing conditions.This was used in the analysis to determine the runoff volume that would be infiltrated and the pollutant loading for the proposed conditions could be estimated. ii) Existing Conditions The study area currently consists of the sand and gravel mining operation located on the western portion of the site,small grain straight rows,small wooded and grassed areas and a few small wetlands.The impervious surface is primarily comprised of the existing roadways.These include County Road 42, County Road 46,and 170th Street which run east and west.The major roads which run north to south include Biscayne Avenue, Akron Avenue,Audrey Avenue,and Blaine Avenue East. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 55 The major watersheds include the future mining drainage, drainage to the Mississippi River,and discharges to the Vermillion River(Figure 17-1).The Mississippi River receives drainage from approximately 2,641 acres.The Vermillion River receives drainage from 1,408 acres of the AUAR area and the River is located approximately 2.5 miles downstream from the project boundary.The drainage area to the future lake (Lake 2162)associated with the mining operation is 871 acres.The basins shown as land locked on Figure 17-1 are located within Empire Township and consist of 159 acres. There are areas within the City of Rosemount that are currently landlocked; however, there are plans to provide an overflow path through storm sewer constructed as a part of future development. Future development will need to address any requirements that are established due to current regulatory standards adopted by the Vermillion River Watershed Joint Powers Organization (VRWJPO), City of Rosemount, Empire Township,and Minnesota Pollution Control Agency(MPCA). About 115 acres of the study area consists of Group A rated soils and the remaining area contains Group B rated soils. These soil ratings are based on hydrologic soil classifications with A soils having high infiltration rates even when thoroughly wetted. The infiltration rates range from 0.8 to 1.63 inches per hour(Minnesota Stormwater Manual). These soils consist chiefly of deep,well drained to excessively drained sands and gravel. Group A soils have a high rate of water transmission,therefore resulting in a low runoff potential. Group B soils have moderate infiltration rates ranging from 0.3 to 0.6 inches per hour when thoroughly wetted. Group B soils consist of deep moderately well to well drained soils with moderately fine to moderately coarse textures. iii) Proposed Conditions Due to the conceptual nature of the development scenarios,the amount of impervious surfaces for each land use was estimated based on the estimates in the City of Rosemount's Nondegradation Report Dated December 20,2007 and by characterizing the impervious surface amounts of existing developments in the City. The existing conditions and three proposed land use scenarios were evaluated. All three of the land use scenarios represent a similar amount of proposed impervious surface. Scenario 1 represents a 27 percent impervious,Scenario 2 represents a 26 percent impervious,and Scenario 3 represents a 28 percent impervious. Stormwater management for any scenario can be provided through a combination of wet detention ponds and infiltration features.The soils within the study area will likely provide ideal conditions for achieving volume reduction and pollutant reduction through the use of infiltration. iv) Local Stormwater Management Requirements Stormwater management within the future development of the study area must be in conformance with local requirements of the Vermillion River Water Joint Powers Organization (VRWJPO),City of Rosemount, Empire Township and Minnesota Pollution Control Agency(MPCA).Some requirements are more stringent than others. However,the City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 56 development in the study area will need to demonstrate that all local standards are being met under proposed stormwater management techniques. The following is a summary of major stormwater management requirements: (1) Vermillion River Watershed Joint Powers Organization The VRWJPO design standards require that for rate control, proposed runoff rates shall not exceed existing for the 1-year and 10-year critical during storm events. The proposed runoff rates shall also keep future peak flood flows for the Vermillion River 100-year,4-day event from increasing above existing conditions peak flows. Numerical flow standards must be adopted in intercommunity boundaries as identified in the VRWJPO Hydrologic Model.This would apply to the communities of Rosemount and Empire Township.These communities must apply the VRWJPO Hydrologic Model values in the calibration of their own local hydrologic models. The VRWJPO prefers that infiltration/volume control be used for meeting the water quality standards identified in their rule.The volume control criteria requires development that creates one acre or more of new impervious surface must incorporate volume control practices into the design sufficient to prevent an increase in the runoff volume for the 2-year 24-hour storm above pre-development conditions.The criteria can either be satisfied by the LGU on a regional basis or calculated on a site by site basis for each individual proposal. In instances where infiltration/volume control is not feasible and the site is discharging to a designated trout stream this criteria can be met through ponding providing the pond does not discharge for the 2-year 24-hour storm (preferred option)or the wet pond is designed with a combination of measures such as shading,filtered bottom withdrawal,vegetated swale discharges, or constructed wetland treatment cells that will limit temperature increases. (2) City of Rosemount Stormwater Management Requirements and Design Standards The City's 2007 Surface Water Management Plan (SWMP)design standards require that all water from a 100-year 24-hour storm event be retained on-site. For events with longer duration, a maximum peak stormwater discharge rate will be limited to 0.05 cfs/acre.The City requires that this standard be met through the use of infiltration and regional treatment where it is practical and feasible to do so. Landlocked depressions that presently do not have a defined outlet and do not typically overflow may be allowed a positive overflow to prevent damage to adjacent properties. Any overflows from landlocked depressions will comply with the City's rate control, runoff volume control and low floor requirements including storing runoff from the 100- year, 24-hour storm event for new development and restricting discharge to 0.05 cfs/acre for longer duration storm events. Pretreatment to NURP standards is required prior to the discharge of stormwater to waterbodies and wetlands classified as Preserve and Manage 1 and infiltration basins. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 57 The NURP guidelines require that a permanent pool (dead storage)volume below the principal spillway shall be greater than or equal to the runoff from a 2.5-inch storm event for the entire drainage area assuming full development.The NURP pond shall meet the design criteria identified in the City's 2007 Surface Water Management Plan. Infiltration/volume control shall be provided that is equivalent to 1/12 of an acre- foot/acre/day for the entire site's acreage.Water discharged to infiltration basins shall be pretreated to NURP standards. (3) Empire Townships Stormwater Management Requirements and Design Standards Empire Township's stormwater management requirements for rate control state that proposed rates shall not exceed the existing runoff rates for the 1-year,and 10-year critical duration storm events.The runoff rates shall be implemented such that peak runoff rate controls keep future peak flood flow for the Vermillion River 100-year 4-day event from increasing above existing conditions peak flows.The Township's standards are the same as the VRWJPO requirements. For land disturbing activities where one acre of new impervious surface is created, sufficient volume control shall be provided to prevent an increase in the runoff volume for the 2-year 24-hour storm above pre-development conditions, unless soil conditions limit infiltration. In cases where land disturbance of 40 acres or more, Empire Township refers to the VRWJPO for review and comment prior to review or approval. (4) National Pollution Discharge Elimination System(NPDES)Standards The MPCA is responsible for implementing NPDES standards.The NPDES requirements in the AUAR area will be from the NPDES Construction General Permit and the NPDES Municipal Separate Storm Sewer System (MS4) Permit. The NPDES Construction General Permit will require that for sites replacing pervious surfaces with one acre or more of impervious surface a water quality volume equivalent to 1/2 inch of runoff from the new impervious surface should be treated.This can be met through wet sedimentation basins, infiltration/filtration,or regional ponding. There are no impaired waterbodies, trout streams,or special waters within one mile of the study area;therefore, no additional stormwater requirements will apply. The post- construction water quality standards of the NPDES permit are not more restrictive than what will be required by the other regulatory agencies. The NPDES MS4 permit requires permittees to provide post-construction water quality standards adopted at the local level.The NPDES MS4 Permit is currently being rewritten and additional stormwater requirements may apply and will need to be addressed as a part of future development.The MS4 permit will also require permittees to meet the requirements of future TMDLs. Currently there is a TMDL proposed for discharges to the Mississippi River and it is identified as the South Metro Turbidity TMDL.The South Metro Turbidity TMDL is proposed to require a 25% reduction in TSS loading. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 58 B. Water Quantity and Quality Analysis A water quantity and quality analysis was completed for the existing and proposed conditions within the study area.This quantitative analysis used the procedures and methods described previously and the results are summarized in Table 17-1 and Table 17-2. Table 17-1 summarizes the total runoff volumes for each development scenario compared to the existing condition. Table 17-1:Existing and Proposed Run off Volumes LGU Existing Scenario 1 Scenario 1 Scenario 2 Scenario 2 Scenario 3 Scenario 3 conditions w/o with w/o with w/o with (AC-FT) infiltration infiltration infiltration infiltration infiltration infiltration (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) (AC-FT) Rosemount' 610 1,874 75 1,775 75 1,949 75 Empire TownshipZ 394 815 565 780 553 866 555 The estimates on the scenarios with infiltration are based on the City of Rosemount's policy requiring storage of the 100-year 24-hour rainfall event on-site. 2 The estimates on the scenarios with infiltration are based on the Empire Townships policy requiring that storage be provided to retain the increase in runoff from predevelopment conditions for the 2-year 24-hour event. Table 17-2 summarizes the total pollutant loads for each development scenario compared to the existing condition. Table 17-2:Total Suspended Solids and Total Phosphorus Loads LGU Scenario 1 Scenario 1 Scenario 2 Scenario 2 Scenario 3 Scenario 3 Existing Pollutant w/o with w/o with w/o with conditions infiltration infiltration infiltration infiltration infiltration infiltration Rosemount' TSS 128 309 5 290 5 312 5 (tons/yr) TP 842 1,491 20 1,411 20 1,518 20 (Ibs/yr) Empire TSS 95 196 96 130 94 140 93 Township s (tons/yr) TP 632 636 443 607 434 659 431 (Ibs/yr) ' The estimates on the scenarios with infiltration are based on the City of Rosemount's policy requiring storage of the 100-year 24-hour rainfall event on-site. 2 The estimates on the scenarios with infiltration are based on the Empire Townships policy requiring that storage be provided to retain the increase in runoff from predevelopment conditions for the 2-year 24-hour event. To achieve compliance with regulatory requirements,future development must provide annual volume and pollutant load reductions in the amounts presented in Tables 17-1 and 17-2.These values represent reductions from the post-development condition and are comparable to the City of Rosemount, Empire Township,and VRWJPO regulatory standards. Empire Township has adopted the VRWJPO regulatory standards. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 59 C. Potential Impact to Downstream Receiving Waters • The analysis within the AUAR area for the City of Rosemount shows that the runoff volumes will be reduced from 610 ac-ft for the existing conditions down to 75 ac-ft for each of the three land use scenarios.This is a reduction in runoff volume of 88 percent, achieved through implementing City of Rosemount's volume reduction requirements.This reduction in runoff translates directly to the reduction in pollutant loads shown in Table 17-2. The City of Rosemount's regulatory policy requires that all the water from a 100-year 24- hour storm event be retained on-site. Runoff will still occur from undeveloped areas such as open space and there is potential for events to exceed the 100-year 24-hour storm event. This necessitates the need to provide an overflow discharge route. Providing an overflow discharge route is required by the City of Rosemount. In Empire Township,the analysis shows that the runoff volumes increase. However,the TSS and TP loadings will decrease. Empire Township's regulatory policy requires that the increase in runoff volumes from predevelopment conditions be retained on-site for the 2- year 24-hour storm event. Predevelopment is considered the condition of the site immediately prior to development.There will be no impact to the Vermillion River for TSS and TP and the increase in runoff volume will be mitigated by implementing Empire Township's policy where rates shall not exceed the existing runoff rates for the 1-year,and 10-year critical duration storm events. D. Water Quantity and Quality Mitigation Plan • Each new development within the AUAR area will need to incorporate BMPs to meet the applicable water quantity and water quality regulatory requirements.These policies are outlined in the local stormwater management requirements section.The soils within the AUAR area are primarily comprised of Hydrologic Soil Group A and B soils;therefore, it is likely that these policies will be met using infiltration. • Infiltration to the Rosemount or Empire Township's standards will be provided on each development site or in a regional infiltration system that is created to serve a defined drainage area. The selection of a development-specific or regional system will be based on identifying feasible areas that take into consideration soils,drainage patterns, existing and past land use, and other factors. Areas where infiltration is not feasible or where contamination is possible will not be used for infiltration practices. • To protect adjacent structures, an overflow from the Lake 2162 will be developed that would allow water to overflow either to the northeast toward pond 2246 or to the south toward the Vermillion River. This overflow could potentially occur if a rainfall event occurs that exceeds a 100-year 24-hour event,and/or water elevations reach extremely high levels. Based on this analysis and the installation of the proposed BMP'S,the volume of runoff generated within the AUAR area will be significantly reduced in the future,and the corresponding probability of this overflow occurring will be also reduced from that which exists today. • If any storm water in the study area within Empire Township is to be directed to the City of Rosemount,the Rosemount infiltration standard will be applied to the development. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 60 • Design considerations for comprehensive stormwater management should include regional ponding. • Approved TMDL load reductions and implementation plans shall be addressed by a development's stormwater management plan.These will need to be addressed per the schedule identified in the current version the MS4 permit.The proposed language states "For TMDLs approved prior to the effective date of the MS4 permit the Waste Load Allocation (WLA) discharge requirement will become a requirement of the permittee". • In the City of Rosemount, post-development discharge rates will be limited to 0.05 cfs/acre of the 100-year, 24-hour event. • In Empire Township, it will be required that post-development discharge rates will not be greater than pre-development discharge rates for the 1-year and 10-year, 24-hour storm critical duration events to reduce erosion impacts downstream of the site. • The developer will be responsible for grading the site appropriately to provide adequate stormwater management to the extent necessary and will be required to obtain the necessary permits for stormwater management and grading,to preserve the existing natural features, and to provide water quality protection to meet MPCA Construction General Permit requirements in addition to City of Rosemount, Empire Township, and VRWJPO requirements. • Stormwater will be required to be pretreated prior to discharge to wetlands and Lake 2162. • A SWPPP as required by the NPDES regulations will be needed for any development in the study area. Review of the SWPPP for each development will be required by the City and Township. 18) WATER QUALITY—WASTEWATER a. Describe sources,composition and quantities of all sanitary,municipal and industrial wastewater produced or treated at the site. b. Describe waste treatment methods or pollution prevention efforts and give estimates of composition after treatment. Identify receiving waters,including major downstream water bodies,and estimate the discharge impact on the quality of receiving waters. If the project involves on-site sewage systems,discuss the suitability of site conditions for such systems. c. If wastes will be discharged into a publicly owned treatment facility,identify the facility, describe any pretreatment provisions and discuss the facility's ability to handle the volume and composition of wastes,identifying any improvements necessary. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 61 d. If the project requires disposal of liquid animal manure,describe disposal technique and location and discuss capacity to handle the volume and composition of manure. Identify any improvements necessary. Describe any required setbacks for land disposal systems. i) Existing Conditions Within the City of Rosemount,there are approximately 6,484 connections to regional sewer. The City has approximately 752 residential units that are served by on-site septic systems. Of the 6,484 connections to regional sewer, most are single family residential with some multi-family residential, commercial/industrial, and institutional connections. Based on the City's Sewer Rate Study,the average daily wastewater flow is 1,875,886 gallons per day(GPD). Within the study area there are a few rural residential homes that are served by on-site septic systems. Since the wastewater generated from the City of Rosemount is primarily from residential units,the wastewater characteristics are assumed to be of typical domestic strength. Table 18-1 is a summary of the estimated wastewater characteristics for Rosemount. Table 18-1. Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading for the City of Rosemount Estimated Wastewater Characteristics and Average Parameter Daily Loading mg/I lbs/day Biochemical Oxygen Demand 220 3,442 Total Suspended Solids 220 3,442 Ammonia—Nitrogen 25 391 Total Phosphorous 8 125 Wastewater generated from the City is collected by a series of lift stations, laterals,and trunk sewer mains,and is then directed to one of two interceptor sewers that are owned,operated and maintained by the Metropolitan Council Environmental Services (MCES). These two interceptors include the Apple Valley Interceptor and the Rosemount Interceptor. Figure 18-1 shows existing MCES interceptor sewers and lift stations that serve the City of Rosemount. The Rosemount Interceptor sewer consists of two lift stations,forcemains and gravity sewer that extends west along 140th Street from the decommissioned Rosemount Wastewater Treatment Facility(WWTF). The interceptor is located east of State Highway 52, along the north side of 140th Street, crossing Highway 52,then flows south to County State Aid Highway(CSAH)42,where it turns west and flows along CSAH 42 to Biscayne Avenue. At Biscayne Avenue the interceptor line flows south following Biscayne Avenue to the Empire WWTF. The Rosemount Interceptor sewer is primarily gravity sewer, increasing in size from 36-inch to 48-inch at the intersection of Akron Avenue/CSAH 42. The Apple Valley Interceptor carries approximately 1/4 of the wastewater flow generated from the City south to the Empire WWTF. City of Rosemount Final Alternative Urban Area wide Review August 21,2013 Page 62 All of the flow generated from within the study area will be directed to MCES's Rosemount Interceptor sewer that discharges to the Empire WWTF. The Empire WWTF has an average day treatment capacity of 24 MGD. Development Scenario 1: Development within the study area will be connected to the municipal sewer system which ultimately flows to the MCES interceptors. Development within the study area consists of residential with varying densities,office and business park, light industrial, and four community centers composed of residential land uses with varying densities and commercial land use. Table 18-2 below totals the development plans with proposed population density assumptions to determine the wastewater flow for the study area. The unit demand summarized below was determined through population, number of units, and wastewater usage. It was assumed that wastewater generation is 80 gallons per day per capita (gpcd)for Low Density and Low-Medium Density Residential,85 gpcd for Medium Density Residential, and 90 gpcd for High Density Residential. Non-residential demands were estimated based on MCES sewer availability charge (SAC) criteria. Each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day(GPD). The estimated peak flow factor was developed from MCES's standard peaking factors and was applied to the accumulated flow in each pipe within the sewer network. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 63 Table 18-2. Estimated Average Day Wastewater Flow from Scenario 1 Gross Net Acres Wastewater Avg.Day Type (80%Gross Flow per Wastewater Flow Acres Acres) Unit(GPAD) (GPD) Low Density Residential 1014 _ 811 896 727,045 Low-Med Density Residential 739 591 1152 681,315 Medium Density Residential 465 372 2448 910,916 High Density Residential 6 5 3013 14,148 Neighborhood Center Low-Med Density Residential 19 15 1,156 17,789 Medium Density Residential 64 _ 51 2,448 125,554 High Density Residential 32 _ 26 3,021 77,465 Retail/Commercial/Office 13 10 854 8,763 Village Center Medium Density Residential 44 35 2449 86,194 High Density Residential 50 40 3024 121,651 Retail/Commercial/Office 31 25 1219 30,658 Community Center Medium Density Residential 17 _ 14 2446 33,608 High Density Residential 11 9 3039 27,839 Retail/Commercial/Office 86 69 609 41,808 Regional Center Medium Density Residential 8 _ 7 2449 16,091 High Density Residential 8 7 3032 19,923 Retail/Commercial 148 118 609 72,044 Office/Business Park 284 227 710 161,399 Light Industrial 180 144 294 42,399 Open Space 939 939 NA NA Open Water 259 259 NA NA ROW(Collectors/Arterials) 492 492 NA NA Local Streets/Neighborhood Parks 644 NA NA Total 4911 4911 3,216,608 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 64 Table 18-3 summarizes the estimated ultimate wastewater flow by MCES connection point. Figure 18-2 shows the proposed trunk sewer system layout to collect wastewater from the study area and sewer districts at connection locations along the Rosemount Interceptor. Table 18-3. Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 1 MCES Manhole(City Sewer Gross Net Ultimate Ultimate Peak of Rosemount ID Average Flow No.) Shed Acreage Acreage (MGD) Flow(MGD) 210 Central 937 _ 750 1.01 3.21 226 East 1152 _ 922 0.95 2.87 633 Northwest 710 568 0.82 2.86 643 Southwest 422 338 0.44 1.55 Table 18-4 summarizes the estimated wastewater characteristics and loading for the wastewater that will be generated under Development Scenario 1. Table 18-4. Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Scenario 1 Estimated Wastewater Characteristics Parameter and Average Daily Loading mg/I lbs/day Biochemical Oxygen Demand 220 5,902 Total Suspended Solids 220 5,902 Ammonia -Nitrogen 25 671 Total Phosphorous 8 215 Under this development scenario all of the flow generated from the study area will be directed south to MCES's Empire WWTF. Average daily flow was estimated to be 3.22 MGD(2,234 gpm). The proposed trunk sewer system layout was developed consistent with the City's Comprehensive Sanitary Sewer System Plan (CSP)and proposed street locations in the study area. Sanitary sewer flows were generated for each sewer district based on the net developable acreage and the anticipated land use. The wastewater flow generation rates for the various land use categories discussed in this section were used to project future wastewater flows. The sanitary sewer system was developed using the existing MCES interceptors as municipal sewer system discharge points. Future trunk sewers were laid out based on ground contours which govern how far the gravity trunk sewers can feasibly be City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 65 extended. All trunk sewers were designed to be no deeper than 40 feet,and no shallower than 8 feet from the existing ground surface. Gravity sewer mains, lift stations, and forcemains needed to accommodate the ultimate service area were then sized for peak sanitary sewer flows from those sub-districts which are tributary to each particular trunk gravity sewer main or lift station. The proposed trunk sewer system layout to serve development included in Scenario 1 is shown in Figure 18-3. With varying ground elevations,three new lift stations will be required to convey the wastewater to the Rosemount Interceptor. The proposed trunk sewer system layout results in the highest future flow to the MCES lift station along CSAH 42. There is potential for alternative sanitary sewer layouts where the flow can be directed downstream of the MCES lift station or west to the Rosemount Interceptor adjacent to Biscayne Avenue. Development Scenario 2: This scenario is similar to Scenario 1. The land use area are the same as Scenario 1, however the development densities have been decreased. As discussed in Scenario 1, it was assumed that wastewater usage per capita is 80 gpcd for Low Density and Low- Medium Density Residential,85 gpcd for Medium Density Residential, and 90gpcd for High Density Residential. Non-residential demands were estimated based on MCES SAC criteria. Each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day(GPD). The estimated peak flow factor was developed from MCES's standard peaking factors and was applied to the accumulated flow in each pipe within the sewer network. Table 18-5 summarizes the estimated wastewater flow generated from the study area under Scenario 2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 66 Table 18-5. Estimated Average Day Wastewater Flow from Scenario 2 Gross Net Acres Wastewater Avg.Day Type (80%Gross Flow per Wastewater Acres Acres) Unit(GPAD) Flow(GPD) Low Density Residential 1014 776 576 447,154 Low-Med Density Residential 739 626 912 571,390 Medium Density Residential 465 372 1836 683,187 High Density Residential 6 5 2250 10,566 Neighborhood Center Low-Med Density Residential 19 15 911 14,023 Medium Density Residential 64 51 1,837 94,187 High Density Residential 32 26 2,264 58,054 Retail/Commercial/Office 13 10 854 8,763 Village Center Medium Density Residential 44 35 1835 64,603 High Density Residential 50 40 2268 91,238 Retail/Commercial/Office 31 25 1219 30,658 Community Center Medium Density Residential 17 14 1835 25,206 High Density Residential 11 9 2280 20,879 Retail/Commercial/Office 86 69 609 41,808 Regional Center Medium Density Residential 8 7 1840 12,090 High Density Residential _ 8 7 2277 14,965 Retail/Commercial 148 118 609 72,044 Office/Business Park 284 227 710 161,399 Light Industrial 180 144 294 42,399 Open Space 939 939 NA NA Open Water 259 259 NA NA ROW(Collectors/Arterials) 492 492 NA NA Local Streets/Neighborhood Parks 644 NA NA Total 4911 4911 2,464,612 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 67 Table 18-6 summarizes the estimated ultimate wastewater flow by MCES connection point. Table 18-6. Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 2 MCES Manhole(City Sewer Gross Net Ultimate Ultimate Peak of Rosemount ID Average Flow No.) Shed Acreage Acreage (MGD) Flow(MGD) 210 Central 937 750 0.74 2.46 226 East 1152 922 0.78 2.41 633 Northwest 710 568 0.62 2.24 643 Southwest 422 338 0.32 1.18 Table 18-7 summarizes the estimated wastewater characteristics and loading for the wastewater that will be generated under Development Scenario 2. Table 18-7. Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Development Scenario 2 Estimated Wastewater Characteristics Parameter and Average Daily Loading mg/I lbs/day Biochemical Oxygen Demand 220 4,522 Total Suspended Solids 220 4,522 Ammonia-Nitrogen 25 514 Total Phosphorous 8 164 Consistent with Scenario 1, all of the flow generated from the study area will be directed south to MCES's Empire WWTF. Average daily flow was estimated to be 2.46 MGD (1,712 gpm). The method for design of the trunk sewer system layout is discussed in the Scenario 1 section. The proposed trunk sewer system layout to serve development included in Scenario 2 is shown in Figure 18-4,which is the same as the proposed trunk sewer system layout for Scenario 1. With varying ground elevations,three new lift stations will be required to convey the wastewater to the Rosemount Interceptor. The proposed trunk sewer system layout results in the highest future flow to the MCES lift station along CSAH 42. There is potential for alternative sanitary sewer layouts where the flow can be directed downstream of the MCES lift station or west to the Rosemount Interceptor adjacent to Biscayne Avenue. Development Scenario 3: Development densities in Scenario 1 and 3 were consistent, but land use areas and locations are different. Land uses in the eastern portion of the study area were changed from lower density residential to higher densities or to industrial or business park. As discussed in the previous scenarios,it was assumed that wastewater usage per capita is 80 gpcd for Low Density and Low-Medium Density Residential,85 gpcd for Medium City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 68 Density Residential,and 90gpcd for High Density Residential. Non-residential demands were estimated based on MCES SAC criteria. Each SAC unit was based on 14 employees where one SAC unit equals 274 gallons per day(GPD). The estimated peak flow factor was developed from MCES's standard peaking factors and was applied to the accumulated flow in each pipe within the sewer network. Table 18-8 summarizes the estimated wastewater flow generated from the study area under Scenario 2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 69 Table 18-8. Estimated Average Day Wastewater Flow from Scenario 3 Net Acres Wastewater Avg.Day Type Gross Acres (80%Gross Flow per Wastewater Acres) Unit(GPAD) Flow(GPD) Low Density Residential 784 645 896 577,541 Low-Med Density Residential 755 587 1152 676,226 Medium Density Residential 412 330 2448 807,373 High Density Residential 6 5 3013 14,148 Neighborhood Center _ Low-Med Density Residential _ 19 15 1,156 17,789 Medium Density Residential 64 51 2,448 125,554 High Density Residential 32 26 3,021 77,465 Retail/Commercial/Office 13 10 854 8,763 Village Center Medium Density Residential 44 35 2449 86,194 High Density Residential 50 40 3024 121,651 Retail/Commercial/Office 31 25 1219 30,658 Community Center Medium Density Residential 17 14 2446 33,608 High Density Residential 11 9 3039 27,839 Retail/Commercial/Office 86 69 609 41,808 Regional Center Medium Density Residential 8 7 2449 16,091 High Density Residential 8 7 3032 19,923 Retail/Commercial 148 118 609 72,044 Office/Business Park 462 370 710 262,645 Light Industrial 269 215 294 63,277 Open Space 939 939 NA NA Open Water 259 259 NA NA ROW(Collectors/Arterials) 492 492 NA NA Local Streets/Neighborhood Parks 644 NA NA Total 4911 4911 3,080,595 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 70 Table 18-9 summarizes the estimated ultimate wastewater flow by MCES connection point. Table 18-9. Estimated Ultimate Regional Wastewater Flow by MCES Connection Point from Scenario 3 MCES Manhole(City Sewer Gross Net Ultimate Ultimate Peak of Rosemount ID Average Flow No.) Shed Acreage Acreage (MGD) Flow(MGD) 210 Central 937 750 1.01 3.24 226 East 1152 922 0.82 2.46 633 Northwest 710 568 0.82 2.86 643 Southwest 422 338 0.44 1.55 Table 18-10 summarizes the estimated wastewater characteristics and loading for the wastewater that will be generated under Development Scenario 3. Table 18-10. Estimated Wastewater Characteristics and Total Average Daily Wastewater Loading from Scenario 3 Estimated Wastewater Characteristics Parameter and Average Daily Loading mg/I lbs/day Biochemical Oxygen Demand 220 5,652 Total Suspended Solids 220 5,652 Ammonia -Nitrogen 25 642 Total Phosphorous 8 206 Consistent with Scenario 1 and Scenario 2,all of the flow generated from the study area will be directed south to MCES's Empire WWTF. Average daily flow was estimated to be 3.08 MGD (2,139 gpm). The method for design of the trunk sewer system layout is discussed in the Scenario 1 section. The proposed trunk sewer system layout to serve development included in Scenario 3 is shown in Figure 18-5,which is the same as the proposed trunk sewer system layout for Scenario 1. With varying ground elevations, three new lift stations will be required to convey the wastewater to the Rosemount Interceptor. The proposed trunk sewer system layout results in the highest future flow to the MCES lift station along CSAH 42. There is potential for alternative sanitary sewer layouts where the flow can be directed downstream of the MCES lift station or west to the Rosemount Interceptor adjacent to Biscayne Avenue. ii) Wastewater Mitigation Plan • Figures 18-3, 18-4,and 18-5 show conceptual layout of gravity sewers, lift stations and forcemains to serve the proposed study area under each scenario. All of the scenarios maintain an identical pipe layout network and can be identified by sewer district or Rosemount Interceptor connection points as defined in Figure 18-2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 71 • The East sewer district consists primarily of gravity sewers,and two lift stations and forcemains that convey wastewater north to the Rosemount Interceptor along County Road (CR)42. The south lift station capacity ranges from 700 gpm to 900 gpm and the north lift station capacity ranges from 1,700 gpm to 2,000 gpm in capacity,depending on the scenario. Sewers within the East sewer district range between 8" and 21" in diameter. • The Central sewer district consists of primarily gravity sewers, and one lift station and forcemain that convey the wastewater north to the Rosemount Interceptor along CR 42. The lift station ranges in capacity from 1,600 gpm to 2,000 gpm depending on the scenario. Sewers within the Central sewer district range in size from 8"to 24" in diameter. • The Northwest sewer district consists of all gravity sewers which flows to the north and discharges to the Rosemount Interceptor along CR 42. The gravity sewer ranges in size from 8"to 21" depending on the scenario. • Similar to the Northwest sewer district,the Southwest sewer district consists of all gravity sewers. Wastewater flows to the west where it discharges to the Rosemount Interceptor along Biscayne Ave. The gravity sewers in the Southwest district range in size from 8"to 15" in diameter. 19) GEOLOGIC HAZARDS AND SOIL CONDITIONS A. Approximate depth (in feet)to groundwater: 40'—50'minimum Approximate depth(in feet)to bedrock*: 25' minimum; 150'average *See Figure 19-4. B. Describe any of the following geologic site hazards to ground water and also identify them on the site map: sinkholes,shallow limestone formations or karst conditions. Describe measures to avoid or minimize environmental problems due to any of these hazards. Information from the MPCA,the Minnesota Geological Survey,and the Department of Geology and Geophysics at the University of Minnesota indicate that the UMore site is not within an active karst area(Figure 19-6). Based on information from the University of Minnesota,the site may be a "Covered Karst"condition where carbonate bedrock exists, but under more than 100 feet of sediment cover. Portions of the site may also be "Transition Karst"with more than 50 feet of sediment cover.These two conditions would be consistent with bedrock depths on the site. More significant limitations based on karst landscapes exist south and east of the study area in Dakota County. No limestone or sinkholes are known to exist on the site. C. Describe the soils on the site,giving NRCS(SCS)classifications,if known. Discuss soil granularity and potential groundwater contamination from wastes or chemicals spread or spilled onto the soils. Discuss any mitigation measures to prevent such contamination. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 72 i) SOILS The soils within the study area are typical of those in the City of Rosemount and Empire Township;generally sandy and conducive to infiltration. Waukegan is the dominant soil type on the UMore property. The NRCS assigns soils to 4 different hydrologic groups A, B,C and D. Most of the area has hydrologic soils in group B with some areas of A and C. Group A soils are characterized as having a high infiltration rate even when wet with low runoff potential. Group B soils have moderate infiltration characteristics with low runoff potential. Group C soils infiltrate at a slower rate resulting in a higher runoff potential. All of the soils present on the site are listed in Table 19-1 and are also shown on Figure 19-1. Soils on the UMore site are conducive to development. With the exception of a very small area in the northeast corner of the site,they are not hydric(Figure 19-2)and very few areas have limitations for basement suitability(Figure 19-3). According to the Dakota County Soil Survey,Waukegan silt loam (0 to 1 percent slopes) is the predominate soil type on the UMore property. Waukegan is a well-drained soil on loamy, mantled outwash plains and stream terraces. Individual areas are typically irregular in shape and range from about 5 to 200 acres in size. Permeability of Waukegan soil is moderate in the silty mantle and rapid in the sandy underlying material. The available water capacity is moderate,and runoff is very slow. The seasonal high water table is below a depth of 6 feet and throughout Dakota County, most areas of this soil are cropland. The Dakota County Soil Survey further discusses the Urban Land-Waukegan Complex(0 to 1 percent slope)which is the second largest soil type on the subject property. In Rosemount and Empire Townships,these soil types consist of cut and fill land in which the original soil material has been so altered that individual horizons are indistinguishable. Generally,the sandy underlying material has been mixed into the loamy surface layer and subsoil. Construction of the Gopher Ordnance Works was the primary reason for large areas of Waukegan soils being placed into the Urban Land classification. The Urban Land-Waukegan soils have characteristics that are in many ways identical to those of the undisturbed Waukegan soils. They are well suited to buildings and the construction of roads providing that proper base materials are provided as part of the roadway subgrade. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 73 Table 19-1.Soil Types Map Map Unit Description Hydrologic Hydric Drainage Erosion Suitability for Symbol Name Group Hazard Dwellings w/ Basements 1027 Udorthents Wet Unknown Not rated Not rated 1029 Pits Gravel Unknown Not rated Not rated Moderately well 150B Spencer Silt-Loam _ C Partially hydric drained Moderate Very limited Moderately well Somewhat 1816 Kennebec Variant Silt-Loam C Partially hydric drained Slight limited Moderately well Somewhat 250 Kennebec Silt-Loam C Not hydric drained Slight limited 279B Otterholt Silt-Loam B Partially hydric Well drained Moderate Not limited Somewhat 279C Otterholt Silt-Loam B Partially hydric Well drained Severe limited 301B Lindstrom Silt-Loam B Not hydric Well drained Slight Not limited 342B Kingsley Sandy-Loam C Partially hydric Well drained Moderate Not limited 39A Wadena Loam B Not hydric Well drained Slight Not limited 39B Wadena Loam B Not hydric Well drained Slight Not limited 39B2 Wadena Loam B Not hydric Well drained Moderate Not limited 39C Wadena Loam B Not hydric Well drained Moderate Not limited 39D Wadena Loam B Not hydric Well drained Moderate Very limited 411A Waukegan Silt-Loam B Not hydric Well drained Slight Not limited 411B Waukegan Silt-Loam B Not hydric Well drained Moderate Not limited Somewhat 411C Waukegan Silt-Loam B Not hydric Well drained Severe limited 415B Kanaranzi Loam B Not hydric Well drained Slight Not limited Somewhat excessively 41B Estherville Sandy-Loam A Not hydric drained Slight Not limited 454B Mahtomedi Loamy-Sand A Not hydric Excessively drained Slight Not limited Somewhat 611C Hawick Coarse Sandy-Loam A Not hydric Excessively drained Moderate limited 611D Hawick Coarse Sandy-Loam A Not hydric Excessively drained Moderate Very limited 611E Hawick Loamy-Sand A Not hydric Excessively drained Severe Very limited Urban land- 857A Waukegan Urban Not hydric Not rated Not rated Urban land- 857B Waukegan Urban Not hydric Not rated Not rated Urban land- Somewhat excessively 858C Chetek Urban Not hydric drained Not rated Not rated Urban land- 865B Hubbard Urban _Not hydric Excessively drained Not rated Not rated Kingsley- Mahtomedi- Moderately well 895B Spencer C Not hydric drained Moderate Not limited Kingsley- Mahtomedi- Moderately well Somewhat 895C Spencer C Not hydric drained Severe limited City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 74 ii) GROUNDWATER A number of detailed studies have been completed and provide data on the groundwater conditions in the UMore Park AUAR project area.These studies have included using test wells to assess groundwater flow, recharge rates,temperature,and water quality. Data from these and other studies have been used to evaluate the potential impacts of future site uses on groundwater.Two key topics addressed in these studies are groundwater recharge and groundwater quality impacts. Groundwater Recharge Surface soil and underlying geologic units in the area are conducive to infiltration,thus little runoff occurs from the property. Potential impacts of future development on groundwater recharge are typical of urban development and include reduced infiltration to groundwater due to soil compaction and construction of impervious ground cover (e.g., pavement and buildings).Through sustainable site planning,storm water management,and construction practices, potential impacts to groundwater recharge caused by urban development can be mitigated. Groundwater Quality Impacts Regional agricultural practices have resulted in nitrate concentrations in shallow groundwater above state and federal and drinking water standards at and upgradient of the site. As urban development replaces agriculture land use, it is assumed that less nitrate-based fertilizer will be applied to the ground in the project area and local nitrate contributions to groundwater will decrease. However, nitrate concentrations in shallow groundwater will likely remain above drinking water standards due to agricultural practices in the region. Historical use on the subject property has resulted in limited impacts to groundwater quality.The former University of Minnesota Rosemount Research Center Burn Pit (UMRRC Burn Pit)was identified as the source of groundwater impacts in the mid-1980s and was mitigated under an agreement between the University and the Minnesota Pollution Control Agency(MPCA). Mitigation measures,which were designed to eliminate human health risks by providing safe drinking water to affected residences, were achieved with the construction of a community rural water supply system and the operation of a groundwater extraction and treatment system. The MPCA approved the shutdown of the groundwater extraction and treatment system in 1991 after groundwater impacts were confirmed to be lower than the applicable health-based drinking water standards. Samples collected during recent studies from existing and newly installed monitoring wells indicate that groundwater impacts associated with the UMRRC Burn Pit continue to decrease. The United States Environmental Protection Agency concluded in 2012 that the groundwater remedy remains protective of human health and the environment and groundwater does not exceed health risk levels. iii) SCENARIOS 1,2 AND 3 Proposed land uses within the study area will include a mix of residential,commercial, industrial and park and open space uses. All development will be served by municipal water and sanitary sewer systems. Commercial and industrial uses are anticipated to be City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 75 clean uses;a mix of offices,warehouses, light assembly operations,and research and development. The Concept Master Plan prepared by the University of Minnesota advocates the establishment of an eco-industrial park that would include uses that would typically have a symbiotic relationship, using the by-products of one operation as a resource for another. The nature of the full complement of future land uses on the UMore property is not expected to present a hazard to groundwater contamination since contaminants are either not expected to be present within the area or will be properly addressed in full accordance with State and Federal requirements. In order to meet the daily needs of future residents and businesses,the study area is expected to see development of typical urban commercial services uses,some of which will have limited potential for groundwater contamination. Gas stations and convenience stores with gas are the most common uses with some contamination potential. These developments will be required to adhere to State regulations for containment of underground petroleum tanks thereby limiting the risk potential. Based on the proposed land uses depicted in Scenarios 1, 2 and 3,the potential for groundwater contamination and/or adjacent drinking well contamination should be no greater than, and is expected to be less than,the potential that exists with the existing agricultural land use. The pesticides and fertilizers that are used in agricultural uses currently are allowed to run off the site and/or infiltrate into the ground,thus having the potential to contaminate existing wells. iv) GEOLOGIC HAZARDS AND SOIL CONDITIONS MITIGATION MEASURES • The NPDES Phase II Construction Site permit will be required for development within the study area. This permit requires a site specific Storm Water Pollution Prevention Plan (SWPPP)to be completed for construction. This SWPPP is required to include pollution prevention management measures for solid waste and hazardous material spills that occur during construction. • Development or construction work will require conformance with the City spill response plan. Spills will be reported to the Minnesota State Duty Office and 911, along with applicable City staff. Those authorities will in turn notify any other appropriate officials depending on the nature of the incident. • For all gas stations with underground tanks,annual licensing from the MPCA will be needed. • The area of partially hydric soils in the northeast corner of the site is proposed to remain as a natural open space area. • Should any other conditions be identified during site redevelopment activities that have the potential to materially impact either groundwater recharge or groundwater quality, investigations will be conducted and mitigation measures will be identified to address the impact consistent with applicable State and Federal requirements. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 76 • The City requests project proposers prepare and submit to the MPCA Construction Contingency Plans("CCPs")to help identify and address any potential releases of hazardous substances that may be encountered during construction activities. Phase I Environmental Site Assessments should also be completed for the proposed project area and submitted to MPCA along with the CCPs. • Any business or institutional uses that use or store petroleum or other hazardous products will be subject to local and state rules regulating such uses. v) GEOLOGIC HAZARDS AND SOIL CONDITIONS MITIGATION MEASURES • The NPDES Phase II Construction Site permit will be required for development within the study area. This permit requires a site specific Storm Water Pollution Prevention Plan (SWPPP)to be completed for construction. This SWPPP is required to include pollution prevention management measures for solid waste and hazardous material spills that occur during construction. • Development or construction work will require conformance with the City spill response plan. Spills will be reported to the Minnesota State Duty Office and 911, along with applicable City staff. Those authorities will in turn notify any other appropriate officials depending on the nature of the incident. • For all gas stations with underground tanks,annual licensing from the MPCA will be needed. • The area of partially hydric soils in the northeast corner of the site is proposed to remain as a natural open space area. • Should any other conditions be identified during site redevelopment activities that have the potential to materially impact either groundwater recharge or groundwater quality, investigations will be conducted and mitigation measures will be identified to address the impact consistent with applicable State and Federal requirements. • The City requests project proposers prepare and submit to the MPCA Construction Contingency Plans("CCPs")to help identify and address any potential releases of hazardous substances that may be encountered during construction activities. Phase I Environmental Site Assessments should also be completed for the proposed project area and submitted to MPCA along with the CCPs. • Any business or institutional uses that use or store petroleum or other hazardous products will be subject to local and state rules regulating such uses. 20) SOLID WASTES, HAZARDOUS WASTES,STORAGE TANKS City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 77 For an AUAR,generally only the estimated total quantity of municipal solid waste generated and information about any recycling or source separation programs of the RGU need to be included. No response is necessary for b. For c, potential locations of storage tanks associated with commercial uses in the AUAR should be identified (e.g.,gasoline tanks at service stations). A. Describe types,amounts and compositions of solid or hazardous wastes,including solid animal manure,sludge and ash, produced during construction and operation. Identify method and location of disposal. For projects generating municipal solid waste,indicate if there is a source separation plan;describe how the project will be modified for recycling. If hazardous waste is generated,indicate if there is a hazardous waste minimization plan and routine hazardous waste reduction assessments. No hazardous wastes,solid animal manure,sludge and/or ash are anticipated to be produced by the development scenarios. Municipal solid waste(MSW)that is generated by future urban development under scenarios 1, 2,and 3 will be hauled away by the municipal garbage service. Residents and businesses within the community will be encouraged to reduce generation of municipal solid waste through both traditional recycling initiatives but also through innovative development and programmatic strategies. Dakota County Solid Waste Management Ordinance(No. 110)and Hazardous Waste Ordinance (No. 111)will apply to the study area. The University is a generator of new knowledge and ideas.The development of UMore Park presents an unprecedented opportunity to accommodate future growth in a manner that can become a model for sustainability. UMore Park has the potential to help transform the regional economy by providing new employment opportunities and a stronger connection between locally sourced and produced goods and nearby populations. Forward-looking strategies and aspirational goals have been explored through various master planning and research that examine how UMore Park inhabitants can achieve principals of sustainability including zero waste(see Appendix B). Scenario 4,which is the scenario that assumes continued use and operations of UMore Park in its current state,will have no additional generation waste beyond its current use for the site. The following table represents estimated quantities of municipal solid waste and recycling that will be generated annually for the 4 development scenarios. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 78 Table 20.1 Estimated MSW Quantities Development Estimated Estimated Annual Gross MSW Recycled Annual Net Scenario Employment Population MSW in Tons in Tons MSW Scenario 1 18,242 34,518 43,172 21,586 21,586 Scenario 2 18,242 25,278 36,240 18,120 18,120 Scenario 3 24,483 31,422 46,760 23,380 23,380 Scenario 4 NA NA NA NA NA Quantities were based on the population and employment projections as outlined in responses to Section 6(see Tables 6.1,6.2 and 6.3).The following methodology and assumptions were used to calculate estimated MSW quantities. • Annual tons per capita for residential uses 0.75 • Annual tons per employee for commercial uses 0.95 • Annual per capita and per employee rates were generated based on the following data: o Dakota County Population 398,552 o Dakota County Jobs 170,000 o 2010 Dakota County MSW Tonnage 460,000 o Percent Residential/Commercial 65/35 • Fifty percent of solid waste generated is recycled and removed from the MSW stream.The Dakota County Solid Waste Master Plan 2012-2030 sited an actual reduction in MSW in Dakota County as a result of recycling was 44% in 2008 and 45%in 2010.The MPCA cites in its Report on 2011 SCORE Programs,a reduction of 45% in 2011 due to recycling state wide,which reflects of an upward trend in recycling. Long term goals in Dakota County for recycling are to reduce the MSW stream by 54-60%by 2030.These percentages do not include yard waste recycling material. The 50%figure is arrived at for use in the AUAR based on a projection that progress will be made towards achieving the county goals and as a result of the University's vision for sustainability and zero waste for UMore Park. B. Identify any toxic or hazardous materials to be used or present at the site and identify measures to be used to prevent them from contaminating groundwater. If the use or toxic or hazardous materials will lead to a regulated waste,discharge or emission,discuss any alternatives considered to minimize or eliminate the waste,discharge or emission. AUAR Guidelines: No response is necessary for AUAR item 20.b. C. Indicate the number,location,size and use of any above or below ground tanks to store petroleum products or other materials,except water. Describe any emergency response containment plans.AUAR Guidelines:For AUAR Item 20.c,potential locations of storage City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 79 tanks associated with commercial uses in the AUAR should be identified(e.g. gasoline tanks or service stations) Scenarios 1-3 propose various nodes of commercial development that will likely have small quantities of petroleum products or other materials typical of urban retail commercial development. In some cases gas stations or service stations will exist and will likely have underground storage tanks associated with the businesses.These locations can be seen on each of the Scenario Land Use Maps (Figure 6-1 to 6-3) labeled as: Neighborhood Center, Village Center,Community Center, Regional Center, Business Park, and Industrial. i) Solid Waste, Hazardous Waste,and Storage Tank Mitigation Plan Any business or institutional uses that use or store petroleum or other hazardous products will be subject to local and state rules regulating such uses. 21) TRAFFIC Parking spaces added Not Necessary for AUAR . Existing spaces(if project involves expansion) NA . Estimated maximum peak hour traffic generated(if known)and time of occurrence_ See information below . Provide an estimate of the impact on traffic congestion on affected roads and describe any traffic improvements necessary. If the project is within the Twin Cities metropolitan area, discuss its impact on the regional transportation system. A. Background As part of Item#21—Traffic,the following items have been addressed as summarized below: • The anticipated estimated daily,AM,and PM peak hour traffic generated from the UMore property under each development scenario. • The anticipated traffic impact on the area roadways as a result of the proposed development of the UMore property. • The anticipated impact on the regional transportation system as a result of the proposed development of the UMore property. • Determination of anticipated transportation improvements to mitigate identified impacts from traffic generated by the proposed UMore property. The existing conditions were analyzed as the baseline for the future year analysis. Four development scenarios were analyzed including the no-build and three build scenarios. Each build scenario contains a mixture of uses including, residential, light industrial,office, retail and open space. Future land development will have an impact on the operations of roadways and intersections in the project area. Increased trips from future development scenarios will be used to forecast future traffic volumes and evaluate traffic operations on the roadway system within the study area. The year 2030 was assumed for the traffic analysis of each scenario for the full build of the site.The year was selected to represent the current transportation system analysis time City of Rosemount Final Alternative Urban Areawide Review August21,2013 Page 80 horizon used by the City of Rosemount, Empire Township, Dakota County,and Metropolitan Council. Full build out in the study area is likely to occur beyond the analysis time horizon. In addition, although concept planning has occurred within the study area, anticipated phasing of the planned development has not yet been finalized. It is anticipated that this analysis will be evaluated based on one or more of the following potential triggers: • With each proposed development proposal • With the City of Rosemount's, Empire Township and/or Dakota County's Comprehensive Plan updates • With the 5-year AUAR evaluation process This study was developed with consideration of the transportation and land use elements of the following documents: • Rosemount/Empire/UMore Area Transportation System Study • Highway 52/42/55 Interchange and Highway 55 Regional Corridor Study • Dakota County CSAH 42 Access Plan • Highway 52 IRC Management Plan • CSAH 42/Akron Avenue AUAR • Empire Mining EIS • UMore Gravel Mine EIS • City of Rosemount Transportation Plan • Dakota County 2030 Transportation Plan • Empire Township 2030 Transportation Plan B. Existing(2012)Conditions In order to evaluate the existing conditions, key roadway segments and intersections were selected that are expected to provide the primary access to the regional roadway system when the area develops. This section documents the geometry,traffic volumes,and functional class at these locations, and uses these traffic characteristics to estimate their existing traffic operations. i) Key Roadways and Intersections The following existing and future roadways were selected as the key roadway segments for the development site: • CSAH 42-TH 3 to US 52 • Boulder Trail(extension)—Biscayne Ave to Blaine Ave • CSAH 46-TH 3 to US 52 • Biscayne Ave—CSAH 42 to 170th St • Akron Ave(CR 73)—CSAH 42 to 170th St • Audrey Ave—CSAH 42 to 170th St • Blaine Ave (CSAH 71)—CSAH 42 to CSAH 46 The transportation characteristics for the roadways are displayed in Table 21-1. The existing roadway section is documented,along with the existing functional classification. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 81 The following existing and future intersections were selected because they provide primary access to the regional roadway system from the development site: • CSAH 42 at TH 3 • CSAH 42 at Biscayne Ave • CSAH 42 at 145th St • CSAH 42 at CR 73 (Akron Ave) • CSAH 42 at Audrey Ave • CSAH 42 at CSAH 71(Blaine Ave) • CSAH 42 at US 52 SB Ramps • CSAH 42 at US 52 NB Ramps • Boulder Tr(extension) at Biscayne Ave • Boulder Tr(extension) at Akron Ave • Boulder Trail(extension)at Audrey Ave • Boulder Tr(extension) at Blaine Ave • CSAH 46 at TH 3 • CSAH 46 at Biscayne Ave • CSAH 46 at Akron Ave • CSAH 46 at Audrey Ave • CSAH 46 at Blaine Ave • CSAH 46 at US 52 SB Ramps/Frontage Rd W • CSAH 46 at US 52 NB Ramps/Frontage Rd E City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 82 Table 21-1:Characteristics of Key Roadways Roadway Location Facility Type Functional Class CSAH 42 TH 3 to US 52 4 Lane w/Turn Principal Arterial Lanes Boulder Trail Biscayne Ave to Blaine Ave (Future) Future Major Collector (extension) CSAH 46 TH 3 to Biscayne Ave 4 Lane w/Turn Minor Arterial Lanes CSAH 46 Biscayne Ave to US 52 2 Lane w/Turn Minor Arterial Lanes TH 3 CSAH 42 to CSAH 46 2 Lane w/Turn Minor Arterial Lanes Biscayne Ave North of CSAH 42 2 Lane w/Turn Major Collector Lanes Biscayne Ave CSAH 42 to 170th St Gravel Local(Future Major Collector) Akron Ave(CR 73) North of CSAH 42 2 Lane w/Turn Major Collector(Future Minor Lanes Arterial) Akron Ave CSAH 42 to 170th St (Future) Future Minor Arterial Audrey Ave CSAH 42 to 170th St (Future) Future Major Collector Blaine Ave(CSAH CSAH 42 to CSAH 46 2 Lane w/Turn Minor Arterial 71) Lanes US 52 CSAH 42 to CSAH 46 4 Lane Freeway Principal Arterial Source:WSB&Associates,Inc.and City of Rosemount Transportation Plan(2008) The existing(2012)AM and PM peak hour turn movement traffic volumes, lane geometry,traffic control and Average Daily Traffic(ADT)volumes for the existing key roadways are illustrated on Figures 21-1A and 21-1B.The traffic volumes were obtained from "Year 2011 MnDOT Traffic Flow Maps"and the "UMore Gravel Mine EIS". C. Existing(2012)Operations Analysis Traffic operations were evaluated for the existing key roadway segments and intersections. This section describes the methodology used to assess the operations and provides a summary of how traffic is operating today.The detailed peak hour analysis is included in the Appendix C. i) Analysis Methodology The traffic operations analysis is derived from established methodologies documented in the "Highway Capacity Manual 2010"(HCM).The HCM provides a series of analysis techniques that are used to evaluate traffic operations. The analysis techniques defined in the HCM is different for roadways and intersections. Roadway segment analysis focuses on the average daily volume to capacity ratio,while intersection analysis focuses on delay caused by the peak hour critical movements. It is City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 83 therefore possible to have an efficient intersection located along a poorly operating roadway segment,or a poorly operating intersection along an otherwise free-flowing arterial. For purposes of this study,the roadway segment analysis was conducted at a planning level. The planning level analysis consists of comparing the average daily flow rates on a roadway segment to the ADT roadway segment traffic capacity threshold volumes for that facility type,as displayed is Table 21-2. Table 21-2: Roadway Segment Traffic Capacity Thresholds Capacity(vehicles per day) Approaching Uncongested Congestion Congestion Roadway Section (LOS A-C) (LOS D) (LOS E-F) Two-lane undivided urban <6,000 6,000-10,000 >10,000 Two-lane undivided rural <11,000 11,000-15,000 >15,000 Three-lane urban(two-lane with turn lanes) <12,000 12,000-17,000 >17,000 Four-lane undivided urban <18,000 18,000-22,000 >22,000 Five-lane urban(four-lane with turn lanes) <26,000 26,000-32,000 >32,000 Four-lane divided rural <32,000 32,000-38,000 >38,000 Six-lane divided urban <40,000 40,000-47,000 >47,000 Eight-lane divided urban <53,000 53,000-63,000 >63,000 Four-lane freeway <60,000 60,000-80,000 >80,000 Six-lane freeway <90,000 90,000-120,000 >120,000 Source:Derived from the Highway Capacity Manual The intersection peak hour analysis utilizes micro-simulation computer modeling software(Synchro/SimTraffic).The methodology and results of this analysis are included in the Appendix C. ii) Existing(2012) Level of Service Summary The existing roadway segment traffic operations are displayed on Table 21-3. For purposes of this study,segments are classified as either uncongested,approaching congestion,or congested based on the ADT and estimated LOS.As shown on the table, no segments are classified as congested when using the LOS D/E boundary as the index of congestion. TH 3 and CSAH 46 are at LOS C conditions. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 84 Table 21-3:Existing(2012) Roadway Segment Level of Congestion Roadway Location ADT LOS CSAH 42 TH 3 to US 52 12,100 A Boulder Trail(extension) Biscayne Ave to Blaine Ave (Future) --- CSAH 46 TH 3 to Biscayne Ave 11,000 A CSAH 46 Biscayne Ave to US 52 9,800 C TH 3 CSAH 42 to CSAH 46 10,400 C Biscayne Ave North of CSAH 42 2,350 A Biscayne Ave CSAH 42 to 170th St 760 A Akron Ave(CR 73) North of CSAH 42 365 A Akron Ave CSAH 42 to 170th St (Future) --- Audrey Ave CSAH 42 to 170th St (Future) --- Blaine Ave(CSAH 71) CSAH 42 to CSAH 46 800 A US 52 CSAH 42 to CSAH 46 30,000 B Source:Year 2011 MnDOT Traffic Flow Maps and WSB&Associates,Inc. A summary of the existing(2012) peak hour traffic operations at the key intersections was completed and is included in the Appendix C. Based on the analysis the existing roadway network generally performs at acceptable conditions(LOS D or better) in the AM and PM peak hours.The only exception is the CSAH 42/US 52 NB Ramps intersection which operates at LOS E in the AM peak hour. This is due to high traffic volumes on CSAH 42 and a lack of traffic signals at the intersection to allow vehicles to clear the northbound approach. D. Future 2030 Conditions The purpose of this section is to identify the traffic impacts associated with the future development within the project area. For the UMore development,the no-build (existing land use and general traffic growth) and three full-build land use scenarios were evaluated. A detailed description of the scenarios can be found in Item 6 Land Use. The analysis year of 2030 was selected based on the current time horizon for the City of Rosemount, Empire Township and Dakota County's Comprehensive plans. It is acknowledged that the full build out of the UMore site will not occur until much later possibly 2040/2050. However,this assumption does provide a worst case condition for 2030.The assumptions and analysis can be reviewed and compared to the results in the AUAR with each required 5 year AUAR evaluation. i) Future Roadway System and Functional Classification The functional classification system is the creation of a roadway and street network which collects and distributes traffic from neighborhood streets to collector roadways to arterials and ultimately,the Metropolitan Highway System. Roads are placed into categories based on the degree to which they provide access to adjacent land versus City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 85 provide higher-speed mobility for"through"traffic. Functional classification is a cornerstone of transportation planning. Within this approach, roads are located and designed to perform their designated function. The functional classification system used in the City of Rosemount and UMore development area conforms to the Metropolitan Council standards.The Metropolitan Council has published these criteria in the Transportation Development Guide/Policy Plan. This guide separates roadways into four main street classifications, including principal arterials, minor arterials,collectors, and local streets. These classifications address the function of state,county,and city streets from a standpoint of the safe and efficient movement of traffic while providing satisfactory access to residents and businesses located within the UMore development area and the City. The attached Figure 21-2 illustrates the anticipated future functional classification system in the UMore development area.Although these locations are shown on the figure as conceptual,the functional classifications will be for the appropriate design and access configurations. Under the following headings, information is provided for each of the respective functional classes,as well the roadways that fall under those classes in the study area. The descriptions of the characteristics of the functional classes provided below are based on Metropolitan Council information. It may be noted that these descriptions represent the"ideal conditions"and that not all roadways within that functional class will fit the specific description due to unique local conditions, history of the roadway,or other factors. Principal Arterial Roadways:The metropolitan highway system is made up of the principal arterials in the region. Principal arterials include all Interstate freeways. Interstate freeways connect the region with other areas in the state and other states. They also connect the metro centers to regional business concentrations. The emphasis is on mobility as opposed to land access.They connect only with other Interstate freeways,other principal arterials, and select minor arterials and collectors. The principal arterials through or adjacent to UMore are: • CSAH 42 • US 52 Minor Arterials:The emphasis of minor arterials is on mobility as opposed to access in the urban area; only concentrations of commercial or industrial land uses should have direct access to them. The minor arterial should connect to principal arterials,other minor arterials, and collectors. Connection to some local streets is acceptable. The Metropolitan Council has identified "A" minor arterials as streets that are of regional importance because they relieve, expand, or complement the principal arterial system. The minor arterials in the UMore development area are: • CSAH 46 • CSAH 71(Blaine Avenue) • TH 3 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 86 • CR 73 (Akron Avenue) upgraded from Major Collector Collector Streets:The collector system provides connection between neighborhoods and from neighborhoods to minor business concentrations. It also provides supplementary interconnections of major traffic generators within the metro centers and regional business concentrations. Mobility and land access are equally important. Direct land access should predominantly be to development concentrations. In order to preserve the amenities of neighborhoods while still providing direct access to business areas,these streets are usually spaced at one-half mile intervals in developed areas. Refer to Figure 21-2 for proposed collector roadways(major and minor)within the UMore development area. The major collector roadways in the UMore development area are: • Audrey Avenue • Biscayne Avenue • Boulder Trail (proposed east-west roadway extension) Local Streets: Local streets provide the most access and the least mobility within the overall functional classification system.They allow access to individual homes,shops, and similar traffic destinations.Through traffic should be discouraged by using appropriate geometric designs and traffic control devices. Local streets in the in the UMore development area will be identified as detailed development plans are completed. ii) Future 2030 No-Build Planned Roadway Improvements Several roadway improvements were identified in the previous planning efforts/studies listed in the background section of this document. These improvements, listed below, were assumed to be in place as part of the future 2030 conditions traffic analysis. 1. Installation of traffic signals at the following CSAH 42 intersections: • Biscayne Ave • 145th St • Akron Ave • Audrey Ave • Blaine Ave 2. Interim improvements at CSAH 42 and US 52 SB and NB Ramps including signalization, bridge replacement and addition of turn lanes.These improvements would be in preparation of the future system interchange. 3. Installation of traffic signals at the following CSAH 46 intersections: • Biscayne Ave • US 52 SB and NB Ramps 4. Addition of turn lanes at the following intersections: • CSAH 42 and Biscayne Ave City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 87 • CSAH 46 and Biscayne Ave • CSAH 46 and Akron Ave 5. Lengthening of the eastbound left-turn lane at the CSAH 42/Biscayne Ave intersection 6. Realignment of Akron Avenue to meet Biscayne Avenue south of 170th Street. Akron Avenue will act as a parallel reliever to TH 3. These improvements are in accordance with the mitigation measures proposed in the "City of Rosemount Transportation Plan", "Dakota County Transportation Plan", "CSAH 42/Akron Avenue AUAR", and the "UMore Gravel Mine EIS". iii) Future 2030 No Build Traffic Conditions The future 2030 No Build traffic volumes were based on the projected 2030 conditions from the Dakota County Transportation Plan Model which reflected the most recent comprehensive plan updates from the surrounding communities.A sub-area model for the study area was developed that incorporated the detailed Traffic Analysis Zones (TAZ)and data from the traffic demand model used by Dakota County.The results from the sub-area model were used for the 2030 No Build ADT forecasts. No other growth was assumed with the future 2030 No Build condition. iv) Study Area Traffic Generation Traffic Analysis Zones(TAZ)were developed for the study area in order to accurately assign traffic to the roadway network. Figure 21-3 illustrates the TAZ's in relationship to the primary roadway system. Trip generation estimates were developed for each scenario using the "Institute of Transportation Engineers(ITE) Trip Generation Manual, 9th Ed.", based on the anticipated land uses summarized in Table 21-4. Trips generated by the proposed development area are shown for average daily traffic(ADT),AM peak hour,and PM peak hour. The trip generation rates were adjusted to reflect both pass by trips,those trips already on the roadway that would use the proposed development,and internal dual purpose trips,those trips that would travel between uses within each specific TAZ in the proposed development. It assumed that 15%to 20%of the trips used by retail/commercial/service uses would be pass-by and 10%of the development travel would be internal dual purpose trips within each TAZ. Even with these adjustments the numbers of trips assumed to be generated by the study area is conservative. Future development of the UMore Park property will be a reflection of the University's Concept Master Plan and is likely to provide land uses patterns that stress the inclusion of housing and employment, linked by convenient non- motorized vehicle and roadway connections. Development in such a manner has the potential to reduce motorized vehicle trips with the development as well as to destinations outside of UMore. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 88 v) Site Traffic Trip Distribution Trip distribution refers to the geographic orientation of vehicles approaching or departing a site. Analysis of the site's proposed land use alternatives and the intensity of the anticipated development indicates that some of the trips destined for the site will originate from within the development itself and include short trips,while other trips will originate outside the immediate UMore development area. Thus, it can be expected that those trips originating outside of the City will approach via TH 3,TH 52/55, CSAH 42 and CSAH 46. Trip distribution percentages based on the anticipated demographics and traffic characteristics of the area are shown in Figure 21-4. Each land use within the study area also produces a directional trip distribution according to the time of day. The ITE trip generation manual provides directional trip distribution data that gives the percentage of vehicles entering and exiting the site for each land use type. For example, it can be expected that a large majority of the trips in the residential location would be leaving the area in the AM peak;similarly, most of the trips in the office and/or commercial area would be arrivals in the AM and departing during the PM peak. Study Area Traffic Assignment The future 2030 traffic volume estimates for each scenario were developed based on the trip generation estimates in Table 21-4 and assigned to the roadway system based on the trip distribution shown in Figure 21-4. The projected 2030 traffic volumes were then added to the 2030 No Build (background)traffic to estimate the 2030 build traffic volumes. The estimated AM and PM peak hour turning movements for both the No Build and Build conditions are shown in Figures 21-5 to 21-8.The estimated average daily traffic volumes for the No Build and Build scenarios are shown on Figure 21-9. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 89 Table 21-4:Development Area Traffic Generation N N N N N N N N N N N `/ `/ ` d d d d d N 0.) U V V U U V V V V U ,� •5, co 01 co N co 10 co N 10 co 10 co 10 N co IV (0 V N 00 N N l0 V1 t0 V) N V1 N— p "" r 00 M N O0 O Ol .Mi M Ol M pp pp �} 00qq pp p O N •-I l0 N een d' 000 O .N-1 N .^-I VOl O O 0011 V V V N O Le, N N N eN1 N tN0 0 N ON1 S 01 N V1 V N 0o tD 01 N M 01 M N CO V N N V00 ll1 0000 N .-1 O 00 00 M M l0 M N O CO N CO 0 U1 C . O rl .4' .4 in, .4 e-1 O N V1 O .4 Lt 1-I M ,4 N 01 r..1 N 01 n u `~ u 'I. V1 op N 0 M 0 N Q1 N 0 VD N in 01 N 00 V e-I 0 l0 en LID N N O N V1 l0 O1 M t0 t�0 0c1 M l^0 N N N 00 et-1 N N N l0 CO lM0 .�-1 N 01 CO f^Y1 1^O V�1 N V CO .-I 0 N V1 CO^t-I.. 0 .-1 Vl N V1 .4 O N in O .-1 .a-II r1 tell N N 01 N N cH-I I-I pp .--I ."I .y i . .M-I N WI, N tali 1.0 00 V NI M 0 � 100 N V01 CO � t^D M N tor N N N N 0000 0 .N-1 V V01 N ..1 N 0 i f) a N .-•1 Ni fnf O N M N N N .-I .-1 .--I .-1 N 01 .4 N O N V) � NI N N V Co- N M en N .-I N N l0 N N N N N N a.. N 0) 0) Ll 0) `) 0) `) `) `) 0) N U U U U U U U V U U V co co co co f0 co co co co co co V V —1 r` N CO V1 l0 in N V1 ~• ^ .•-I .--I Ni V N .--I •--I N M R p • u 00 VI1 m 0 S O) .M-I N 0) I. N I ... 111111111111111111111111111111111 7.. N „..._ , r' N N N N N N N N P N ,,, 7 v v IL v i v v d N d _ �- U U V U U U U U U U cc m m m m co co co fa V V .--1 N N l0 in tD in N in t .--I .--1 Ni V Ni .--I N m '- v .•-1 01 n Ol N 01 - _ oo u1 M pop g • •� - 1Nl1 l0, O N co O M a N N •^-I O O V N V1 1�f1 N O N L�11 m M 00 oo N 00 0 .•-I ta. M M. it v M .i .I V7 .ti .-i N Ni .ti N. ..i Vl O .- Lt) l O . N Vi .•-1 N O) N• L N N N CO 1 .-I .--I Cl "I. 0 00 N CO 1M11 0 t0 p0 .N-1 M N 0 00 .�-1 0011 Q0i en en c�-I N 0) en N Ii) l^D CO^ M N CO .--I t0 ."1 N 1-- N M CO 0) M n O N N V en N N LD ...1 s-I .--I N ��{{ Ipp� .--1 In d .--I rl M ri N V1 .--1 i.e.N 00 N lA in V�1 0 001 0 N M V V 00 001 000 ^ 001 00 VN1 lam!) N VM1 N LL0 0 Vt1 � 0) N 01 0 1D M V .fir N 0O t0 Vl N O) 4 in N. N in oo a-■ 1p M N N M N N CO CO N V1 in N N N Oa V1 V1■ Ni N O N f.'I en N en .x-11 s- N c~-1` `""1 N N N N N N O N 00 ri N r1 �• e^i N flee N 0 7 7 7 7 7 7 7 7 7 7 7 7 7 D 7 7 7 7 7 7 7 7 7 7 Co 2• 2 2 2 2 2 2 2 2 2 2 x 2 2 2 2 2 2 2 2 2 2 2 2 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y N co 07 CO N f0 N f0 to 10 f0 (0 00 01 f0 R N f0 A 07 CO 10 01 N 4 0) 0) 0) 0) N O1 0! 01 01 0) 01 O) O) 0) 0) 0) 0) 0) 0) 0) CO 0) 0) 0) C T a a T 0. a T 0. O. T 0- d T 0_ O. T 0. a T Cl_ a T O. 0_ T a a T 0. 0_ T 0. 0_ >s a a • m 2 2 'm 2 2 'Fo 2 2 'm 2 2 "m 2 2 'ia 2 2 '5 2 2 '10 2 2 '10 2 2 'm 2 2 '10 2 2 '10 2 21 n i < 0- 0 < 0. 0 < 0- 0 < 0- 0 < 0. 0 < 0- 0 < 0- 0 < 0. 0 < 0- 0 < 0- 0 < 0- ' a O N M .a l� 00 00 00 7 • 13 c� O N 000 N 000 M Q io M 'O ^ yC N — V+ —. 0 S C P.1 i' en N 6 0 S 4 C IX N 4 N R O d N « n a t` N .d. 00 ,. a d W ✓ y 0 O_ d N N M w V O M W rNry d M V1 V Z ✓ °� iuN a. ti F4 `c� o 'gN � UN UNa VNN G � �. y la 1 V L7 'ppO C V �rl 9 S .. L N p1" OD N N N o0 O 'QQO U O. 8 V Q d 0 " o 00 == cg I: Ni v oo V O 2 U U S Cg N O C Source:ITE Trip Generation 9th Addition City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 90 vi) Future 2030 No-Build and Build Operations Analysis and Deficiencies A summary of the expected traffic operations for the key roadway segments is illustrated in Table 21-5 for the 2030 No Build and Build Scenarios 1,2 and 3. As noted previously,the LOS D/E boundary was used as the index of congestion. Based on the results shown in Table 21-5, no segments of roadway are congested in the No Build scenario. Those segments congested in the Build scenarios include: • CSAH 42 from TH 3 to US 52 with all scenarios as 4-lane and with scenarios 1 and 3 as 6-lane. • TH 3 from CSAH 42 to CSAH 46 with all scenarios • Blaine Avenue from CSAH 42 to CSAH 46 with scenarios 1 and 3 A summary of the expected future 2030 peak hour traffic operations at the key intersections is included in the Appendix C. The analysis of the peak hour 2030 No Build Condition shows the following roadway deficiencies: • The intersection of TH 3 and CSAH 42 operates poorly,especially in the PM peak hour,due to a lack of lanes to handle the projected traffic volumes.The intersection operates at LOS F in the PM peak hour. • The high southbound traffic volumes at the Blaine Avenue and CSAH 42 intersection,coupled with a single left-through-right lane, cause traffic to queue resulting in unacceptable LOS operations at the intersection in the PM peak hour. • Even with signals installed at the CSAH 42/US 52 Ramp intersections,the lack of available turn lanes on the SB off-ramp and through lanes under the bridge severely degrade the operations at the intersection in both peak hours. The analyses of the Full Build Scenarios show that most key intersections will operate at LOS F conditions in either the AM and/or PM peak hours without addition of turn lanes or additional through lanes. vii) Future 2030 Highway Expansion Needs Lane Needs:The County has identified anticipated 2030 highway expansion needs in the "Dakota County 2030 Transportation Plan". These improvements would be considered completed with the no-build scenario.The plan is shown in Figure 21-10A and include the following in the study area: • Expansion of CSAH 42 from 4 lanes to 6 lanes west of Biscayne Avenue • Expansion of CSAH 42 from 2 lanes to 4 lanes east of TH 52 • Expansion of CSAH 46 from 4 lanes to 6 lanes west of Biscayne Avenue • Expansion of CSAH 46 from 2 lanes to 4 lanes from Biscayne Avenue to TH 52 • Extension of CR 73 (Akron Ave)from CSAH 42 south as a 2 lane roadway • Extension of CSAH 71(Blaine Ave)south as a 2 lane roadway City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 91 Table 21-5: Future 2030 Roadway Segment Level of Congestion • w O w co A w U C.) W m W C, 0 m •� 0 co 0 0 0 O 0 0 ,� A E... c i ° fn o o ° o ° ° 0 0 0 8 to M O O O N N O W V O O O O O O to .-i N co c0 0 0 00 N .--1 0 .--1 0 0 0 d' O O O O N NI S 0 to <�-1 O w co A W U V A O A U N = 0 • 'Z °o ° °o 0 o o °o DP tC o 0 co 0 0 0 0 w Cl) eC °o ° °o N a' °o 0 0 °o dW' co 0 co o 0 co o Ni D7 In d' cci •cr N1 w 0 w W A Fr. U U W \ W U 10 't4 14 0 • • O 0 0 O 0 O O O t O ° ° ° v.* 0 E-. Ni Ni O O O O N O 'B' V O `1 O M 0 0 O N <-4 0 .-I O a ° O c O co co O O co • N' ,. Q' tf1' tr CA QD 'Ly 0 P] W CO W V < U a O o O 0 o O o Z ° ° ° [� 00 d Ifi co co N 61 0 O C� N N 0 O O 0 (V . O 0 cY, 0 N co o° Fu+ °o co N d R ° °co v o N ' N --1 0 > a) o 0 x N '.�+ N 5 ., Z x GD.t N N N V = N .T. O O V VI VI C..) U7 > in Q d M ti M E— co E-4 Cv'.) Z V Z V V V V I- 0 a d M 11 N N it O G) U U U V Cr eh Cu d' >, ;, Q A Q' = M v v 0 0 r., C i. mt cd C..) w U F a1 Oa 4 4 e co D Source:WSB&Associates,Inc, D/B=4-lane/6-lane City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 92 1 I Based on the proposed development scenarios and the analysis included in this traffic study, potential additional roadway expansion would be needed to accommodate the study anticipated traffic.The antici ated lanes needs are shown in Figure 21-10B.The additional lane needs over those identified in by the County include: • Expansion of CSAH 42 from 4 lanes to 6 lanes Biscayne Ave to TH 52 • Expansion of CSAH 46 from 2 lanes to 4 lanes east of TH 52 • Expansion of CR 73 (Akron Ave)from 2 lanes to 4 lanes south of CSAH 42 to the new east/west Major Collector • Expansion of CR 71(Blaine Ave)from 2 lanes to 4 lanes south of CSAH 42 to the new east/west Major Collector • Development of the UMore development internal Major and Minor Collector roadway system Access and Intersection Control:Access spacing and type of intersection (i.e.full or partial access)will follow either the County or City/Township access spacing guidelines depending on roadway jurisdiction.The CSAH 42 access spacing is based on the "CSAH 42 Corridor Study Updated Recommendations for Segment 15 Adopted by the County Board"and the "Rosemount Transportation Plan". The type of intersection control (i.e.side street stop,signalization, roundabout,or interchange)can be assessed at a planning level based on traffic volume thresholds.The criteria found in the "Dakota County Transportation Plan"and the Institute of Transportation Engineers indicates that: an interchange should be considered at a location where the total intersection volume is more than 70,000 vehicles per day, and; a signalized intersection or roundabout should be considered where the total intersection volume is more than 12,000 vehicles per day. Based on these criteria, Figures 21-10A and 21-10B show the anticipated Future 2030 No-Build and Build intersection access and control on the Major Collector and Arterial roadways. Installation of intersection control will be documented in an Intersection Control Evaluation (ICE) report as traffic conditions dictate. Right-of-Way Needs:Additional right-of-way will be required with the expansion of existing roadways and development of new alignments. Based on the City of Rosemount, Empire Township and Dakota County guidelines the following right-of-way would be anticipated on roadways adjacent to or in the UMore development area. Local City Street(urban/rural) 60ft/80ft 2 lane City Street(urban/rural) 80ft/100ft 2 lane County Road (urban/rural) 100ft/110ft 4 lane City Street 100ft 4 lane County Road (undivided/divided) 120ft/150ft 6 lane County Road 200ft E. Transportation Mitigation Plan City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 93 Mitigation measures have been developed to address the future potential traffic demands on the local and regional roadway system with any of the build scenarios for the study area. These measures may include at the appropriate time the following: • Evaluate and compare the traffic analysis prepared as part of the AUAR in coordination with the City of Rosemount, Empire Township and Dakota County with detailed roadway mitigation. Evaluation will occur with each large scale development plan submitted for approval,the City,Township and County Comprehensive Plan updates and/or with each five year AUAR review. • Expansion of CSAH 42 from Biscayne Avenue to US 52 from 4 lanes to 6 lanes when warranted by traffic volumes. • Construction of an interchange to replace the existing TH 3/CSAH 42 intersection. Interchange geometry will be proposed with future studies. • Reconstruction of the existing interchange at CSAH 42 and US 52 as a system interchange to accommodate higher turning movements.The City of Rosemount's and Dakota County's 2030 Comprehensive Plans have identified this interchange as potentially serving a rerouted alignment of TH 55 in the future. Interchange configuration and lane geometry will be determined in future studies. • Addition of intersection control (signal, roundabout,etc),documented in an Intersection Control Evaluation report,at locations that meet the required traffic warrants and intersection spacing guidelines in accordance with City,County,and Township guidelines including the updated CSAH 42 Segment 15 recommendations adopted by the County Board.. • Provide right-of-way required for future roadway expansion adjacent to and within the UMore property. • Design and construction of the internal roadway system within the UMore development providing adequate service to each zone of development with turn lanes and traffic control as needed for safe and efficient traffic flow. • Preparation of a Travel Demand Management(TDM) plan for the site,or portions thereof, prior to the first large scale development proposal.This would include, but is not limited to, action items for:transit(both bus and rail), non-motorized, and new technologies. • Preparation of an Access Management Plan for the affected arterial and collector roadways prior to the first development proposal. 22) VEHICLE-RELATED AIR EMISSIONS City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 94 Estimate the effect of the project's traffic generation on air quality,including carbon monoxide levels. Discuss the effect of traffic improvements or other mitigation measures on air quality impacts. A. Background Each of the proposed study area development scenarios is anticipated to generate additional traffic,which will result in potential air quality impacts.This memorandum will discuss the potential air quality impacts associated with each of the development scenarios. In addition to controlling air pollutants for which there are National Ambient Air Quality Standards, EPA also regulates air toxics. Most air toxics originate from human-made sources, including on-road mobile sources, non-road mobile sources (e.g.,airplanes),area sources (e.g., dry cleaners)and stationary sources (e.g.,factories). Controlling air toxic emissions became a national priority with the passage of the 1990 Clean Air Act Amendments,whereby Congress mandated that the U.S. Environmental Protection Agency regulate 188 air toxics,also known as hazardous air pollutants.The EPA has assessed this expansive list in their latest rule on the Control of Hazardous Air Pollutants from Mobile Sources (February 26,2007)and identified a group of 93 compounds emitted from mobile sources that are listed in their Integrated Risk Information System. In addition, EPA identified seven compounds with significant contributions from mobile sources that are among the national and regional-scale cancer risk drivers.These are acrolein, benzene, 1.3- butadiene,diesel particulate matter, plus diesel exhaust organic gases(diesel PM), formaldehyde, naphthalene,and polycyclic organic matter.While FHWA considers these the priority mobile source air toxics,the list is subject to change and may be adjusted in consideration of future EPA rules. The 2007 EPA rule mentioned above requires controls that will dramatically decrease MSAT emissions through cleaner fuels and cleaner engines.According to an FHWA analysis using EPA's MOBILE6.2 model,even if vehicle activity increases by 145 percent as assumed,a combined reduction of 72 percent in the total annual emission rate for the priority MSAT is projected from 1999 to 2050. Air toxics analysis is a continuing area of research. While much work has been done to assess the overall health risk of air toxics, many questions remain unanswered. In particular, the tools and techniques for assessing project-specific health outcomes as a result of lifetime MSAT exposure remain limited.These limitations impede the ability to evaluate how the potential health risks posed by MSAT exposure should be factored into project- level decision-making within the context of the National Environmental Policy Act. The FHWA will continue to monitor the developing research in this emerging field. Because of the uncertainties outlined above, a quantitative assessment of the effects of air toxic emissions impacts on human health cannot be made at the project level.While available tools do allow us to reasonably predict relative emissions changes between alternatives for larger projects,the amount of MSAT emissions from each of the study scenarios and MSAT concentrations or exposures created by each of the study scenarios cannot be predicted with enough accuracy to be useful in estimating health impacts. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 95 Therefore,the relevance of the unavailable or incomplete information is that it is not possible to make a determination of whether any of the scenarios would have"significant adverse impacts on the human environment." B. Methodology This document acknowledges that the build scenarios may result in increased exposure to MSAT emissions in certain locations, although the concentrations and duration of exposures are uncertain, and because of this uncertainty,the health effects from these emissions cannot be estimated. Although a qualitative analysis cannot identify and measure health impacts from MSATs, it can give a basis for identifying and comparing the potential differences among MSAT emissions, if any,from the various scenarios.The qualitative assessment presented below is derived in part from a study conducted by the FHWA entitled A Methodology for Evaluating Mobile Source Air Toxic Emissions Among Transportation Project Alternatives. For each scenario in this AUAR,the amount of MSAT emitted would be proportional to the average daily traffic(ADT)assuming that other variables such as fleet mix are the same for each scenario.The ADT estimated for each of the build scenarios is higher than that for the no build condition, because of the new development that attracts trips that would not otherwise occur in the area.This increase in ADT means MSAT under the build scenarios would probably be higher than the no build condition in the study area.There could also be localized differences in MSAT from indirect effects of the project such as associated access traffic, emissions of evaporative MSAT(e.g., benzene)from parked cars,and emissions of diesel particulate matter from delivery trucks.Travel to other destinations would be reduced with subsequent decreases in emissions at those locations. For all scenarios, emissions are virtually certain to be lower than present levels in the design year as a result of EPA's national control programs that are projected to reduce annual MSAT emissions by 72 percent from 1999 to 2050,as shown in the following graph.The magnitude of the EPA-projected reductions is so great(even after accounting for ADT growth)that MSAT emissions in the study area are likely to be lower in the future than they are today. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 96 NATIONAL MSAT EMISSION TRENDS 1999-2050 FOR VEHICLES OPERATING ON ROADWAYS USING EPA's MOBILE6.2 MODEL 150000 7 �i��Rr•-6 • ;d rf • -5 11)01100 ,= 5 f _jam —3 y r W 5nnn0 } ,y. 2 2000 2010 2020 2030 2040 2050 Calendar Year Note: (1)Annual emissions of polycyclic organic matter are projected to be 561 tons/yr for 1999,decreasing to 373 tons/yr for 2050. (2)Trends for specific locations may be different,depending on locally derived information representing vehicle-miles travelled,vehicle speeds,vehicle mix,fuels,emission control programs,meteorology,and other factors Source:U.S.Environmental Protection Agency.MOBILE6.2 Model run 20 August 2009. The U.S. Environmental Protection Agency has designated all of Hennepin, Ramsey,Anoka and portions of Carver,Scott, Dakota,Washington and Wright counties as a maintenance area for carbon monoxide. The UMore Park AUAR study area is in that portion of Dakota County that is in this carbon monoxide maintenance area. The EPA has approved a screening method to determine which intersections need a hotspot analysis. A hot spot analysis is required if the intersection is above the benchmark average annual daily traffic(AADT)threshold or listed as one of the"Top Ten" intersections. All of the top ten intersections are within the Twin Cities carbon monoxide maintenance area. Below is a list of the top ten intersections and their 2007 AADT. 1. TH 169 at CSAH 81—79,400 2. TH 7 at CSAH 101—66,600 3. TH 252 at 85th Avenue—66,800 4. University Avenue at Snelling Avenue—59,700 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 97 5. TH 252 at Brookdale Drive—61,300 6. Cedar Avenue at County Road 42—75,100 7. TH 7 at Williston Road—54,900 8. University Avenue at Lexington Avenue—59,700 9. TH 252 at 66th Avenue—72,500 10. Hennepin Avenue at Lake Street—37,000 The screening method demonstrates that because this project has less than the benchmark AADT's and does not involve or affect the"Top Ten Intersections," a hotspot analysis is not needed. In summary,under all build scenarios in the design year it is expected there would be slightly higher MSAT emissions in the study area relative to the no build condition due to increased ADT.There also could be increases in MSAT levels in a few localized areas where ADT increases. However, EPA's vehicle and fuel regulations will bring about significantly lower MSAT levels for the area in the future when compared to today. As demonstrated by the above information,this project conforms to the requirements of the Clean Air Act Amendments and the Conformity Rules,40 CFR 93. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 98 23) STATIONARY SOURCE AIR EMISSIONS Describe the type,sources,quantities and compositions of any emissions from stationary sources of air emissions such as boilers,exhaust stacks or fugitive dust sources. Include any hazardous air pollutants(consult EAW Guidelines for a listing),any greenhouse gases(such as carbon dioxide,methane,and nitrous oxides),and ozone-depleting chemicals (chlorofluorocarbons,hydrofluorocarbons,perfluorocarbons or sulfur hexafluoride). Also describe any proposed pollution prevention techniques and proposed air pollution control devices. Describe the impacts on air quality. AUAR Guidance: This item is not applicable to an AUAR.Any stationary air emission source large enough to merit environmental review requires individual review. These types of uses are not anticipated by this project. 24) ODORS,NOISE,AND DUST Will the project generate odors, noise or dust during construction or during operation? ®Yes n No If yes,describe sources,characteristics,duration,quantities or intensity and any proposed measures to mitigate adverse impacts. Also identify locations of nearby sensitive receptors and estimate impacts on them. Discuss potential impacts on human health or quality of life. (Note:fugitive dust generated by operations may be discussed at item 23 instead of here.) A. Background Noise is defined as any unwanted sound. Sound travels in a wave motion and produces a sound pressure level. This sound pressure level is commonly measured in decibels. Decibels represent the logarithmic measure of sound energy relative to a reference energy level. A sound increase of three dBA is barely perceptible to the human ear,a five dBA increase is clearly noticeable,and a 10 dBA increase is heard twice as loud. For highway traffic noise,an adjustment,or weighting,of the high-and low-pitched sounds is made to approximate the way that an average person hears sounds. The adjusted sound levels are stated in units of"A-weighted decibels" (dBA). In Minnesota,traffic noise levels that are exceeded 10%and 50%of the time during the hour of the day and/or night that has the heaviest traffic. These numbers are identified as the L10 and L50 levels. Table 24-1 provides a rough comparison of the noise levels of some common noise sources. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 99 Table 24-1. Decibel Levels of Common Noise Sources Sound Pressure Level Noise Source (dBA) 140 Jet Engine (at 25 meters) 130 Jet Aircraft (at 100 meters) 120 Rock and Roll Concert 110 Pneumatic Chipper 100 Jointer/Planer 90 Chainsaw 80 Heavy Truck Traffic 70 Business Office 60 Conversational Speech 50 Library 40 Bedroom 30 Secluded Woods 20 Whisper Source: "A Guide to Noise Control in Minnesota,"Minnesota Pollution Control Agency, http://www.pca.state.mn.us/programs/pubs/noise.pdf and"Highway Traffic Noise," FHWA,http://www.fhwa.dotgov/environment/htnoise.htm Along with the volume of traffic and other factors(i.e.topography of the area and vehicle speed)that contribute to the loudness of traffic noise,the distance of a receptor from a sound's source is also an important factor. Sound levels decrease as distance from a source increases. The following rule of thumb regarding sound decreases due to distance is commonly used: Beyond approximately 50 feet,each time the distance between a line source(such as a road)and a receptor is doubled,sound levels decrease by three decibels over hard ground,such as pavement or water, and by 4.5 decibels over vegetated areas. B. State of Minnesota Noise Standards The State of Minnesota has enacted noise standards that regulate the traffic noise levels on surrounding properties. Noise standards vary based on the intended use of the impacted property, known as Noise Area Classifications(NAC),as well as the time of day(daytime and nighttime).The noise standards regulate hourly L10 and L50 noise levels,the noise levels exceeded 10 percent and 50 percent of the hour, respectively.The State noise standards are shown in Table 24-2. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 100 Table 24-2:MPCA State Noise Standards—Hourly A-Weighted Sound Levels Sound Pressure Level (dBA) Noise Area General Daytime Nighttime Classification Land Use (7:00 AM - 10:00 PM) (10:00 PM - 7:00 AM) L10 L50 L10 L50 NAC-1 Residential 65 60 55 50 NAC-2 Commercial 70 65 same as daytime NAC-3 Industrial 80 75 same as daytime City and County roadways are often exempt from State noise standards as per Minnesota Statutes Section 116.07,Subd. 2a. Under this statute,City and County roadways are generally exempt from State noise standards unless"full control of access has been acquired." Full control of access has not been acquired for any of the study area roadways. Because of this exemption, exceeding the State noise standards on the roadways within the study area does not require noise mitigation. C. Methodology Existing and future traffic noise levels were estimated using a quantitative model. Noise modeling was completed using the noise prediction program MINNOISE,a version of the FHWA STAMINA 2.0 model adapted by MN/DOT and approved by the Minnesota Pollution Control Agency(MPCA).This model uses peak hour vehicle volume, speed,vehicle class,and the typical characteristics of the roadway to estimate traffic noise levels. In all MINNOISE models, an alpha factor of 0.5 was used to represent the soft ground in the area,and no shielding factors were used. The model was used to estimate PM peak hour traffic noise for five scenarios: Existing (2011), No Build (2030), Land Use Scenario 1 (2030), Land Use Scenario 2 (2030),and Land Use Scenario 3 (2030).Vehicle class percentages throughout the study area were assumed to be 96%cars,2%medium trucks, and 2%trucks/buses in all scenarios.The PM peak hour traffic volumes were assumed to be 10%of the existing and projected daily traffic volumes. The traffic noise impacts associated with each scenario were assessed by modeling noise levels at 19 receptor sites.The receptor sites were chosen to represent a mixture of existing sensitive receptors surrounding the UMore Park area as well as representative sites throughout the UMore Park area.Table 24-3 provides a general description of the modeled receptors.The receptor locations are shown on Figure 24-1. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 101 Table 24-3.General Description of Modeled Receptor Locations. Receptor Number General Description of Receptor Location 1, 2,4, 6, 8, 9, 11 existing single family home adjacent to the study area 3 Dakota County Technical College 5 St.Johns Cemetery& Lutheran Church 7 Dog Park 10, 12, 13, 14, 15, area within study area with potential for 16, 17, 18, 19 high noise impact D. Results The results of the PM Peak Hour sound level models are shown in Table 24-4.The model results indicate that the project will have a traffic noise impact on surrounding properties. The model predicts that State noise standards will be exceeded during daytime hours at many of the receptor locations. Anticipated L10 sound levels in each of the three development scenarios increases from 2 to 5 dBA over the No Build scenario at most receptor locations. Larger increases in sound levels are anticipated at some receptor locations within the project area where there is little or no existing traffic. However,these standards do not apply to the study area roadways. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 102 Table 24-4.Traffic Noise Modeling Results Future 2030 No 2030 2030 2030 Existing Receiver Land Build Scenario 1 Scenario 2 Scenario 3 Use L10 L50 L10 L50 L10 L50 L10 L50 L10 L50 1 NAC-1 662 60.6 68.3 63.6 71.3 68.1 70.9 67.6 71.4 68.2 2 NAC-1 67.4 61.1 70.5 _ 65.5 73.3 69.5 72.7 68.7 733 69.7 3 NAC-1 63.8 58.2 66.7 62.4 69.9 67.0 69.3 66.2 70.0 672 4 NAC-1 60.1 55.5 62.6 59.1 65.6 63.1 65.0 62.4 65.7 63.3 5 NAC-1 67.9 61.4 71.4 66.3 74.2 70.4 73.6 69.6 74,3 70.6 6 NAC-1 52.1 50.6 53.2 51.9 56.2 54.9 56.0 54.6 56.6 55.2 7 NAC-1 49.0 46.5 52.5 47.8 _ 58.8 55.4 58.4 54.9 59.8 56.7 8 NAC-1 44.6 35.7 52.6 42.8 56.6 48.3 56.5 48.1 56.6 48.3 9 NAC-1 55.6 44.2 61.9 52.4 65.2 56.9 64.4 55.7 65.2 56.9 10 NAC-1 62.0 56.6 63.4 58.6 67.1 63.9 66.5 63.1 67.3 64.1 11 NAC-1 56.7 46.4 64.5 56.6 67.9 61.8 67.4 61.0 67.9 61.7 12 NAC-2 67.2 60.2 68.7 62.3 73.4 69.1 72.8 68.3 73.5 69.3 13 NAC-1 60.5 55.3 61.7 57.0 66.5 63.8 66.1 63.2 66.6 63.9 14 NAC-2 64.3 58.2 65.6 60.1 70.4 67.1 70.0 66.5 70.6 67.4 15 varies* 52.5 41.9 60.0 51.3 _ 69.7 64.4 69.0 63.4 70.4 65.4 16 NAC-2 49.6 40.9 53.5 42.4 _ 69.9 64.6 69.3 63.6 69.8 64.5 17 NAC-1 48.0 40.7 58.7 50.4 68.8 64.5 68.0 63.4 68.6 64.2 18 NAC-2 49.4 _ 48.1 _ 50.7 49.6 _ 60.2 54.2 60.0 54.0 61.1 55.4 19 NAC-2 62.3 56.8 63.4 58.4 67.7 64.5 67.4 64.1 67.9 64.8 *Receptor site 15 is projected to be NAC-1 in 2030 Scenario 1 and 2030 Scenario 2,and NAC-2 in Scenario 3. Shaded cells represent an exceedance of the applicable noise standard. i) Odors and Dust Dust typical of construction activities would occur as a result of the UMore Park development scenarios. Dust generated through construction would be minimized through standard dust control measures such as watering.After construction is complete and final ground cover is in place,dust generation is not anticipated. Construction activities are not anticipated to generate any unusual odors,and future land use has not been determined to a level that it is possible to know if individual properties will generate unusual odors. Mitigation of any particular property that is anticipated to generate odors will occur through the normal city development and permitting process. E. Mitigation Measures Site plans for future developments should include measures such as appropriate setback distances, earthen berms, noise walls, and appropriate site design (such as outdoor activity areas being developed away from major noise sources). Each of these items should be considered on a case-by-case basis.The site plans developed for specific projects should show the proposed locations and types of mitigation,with the estimated noise reductions for all areas projected to exceed noise standards. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 103 25) NEARBY RESOURCES Are any of the following resources on or in proximity to the site? Archaeological, historical,or architectural resources? ®Yes n No Prime or unique farmlands or land within an agricultural preserve? ®Yes['No Designated parks,recreation areas,or trails? ®Yes ❑ No Scenic views and vistas? ❑Yes ® No Other unique resources? n Yes ® No If yes,describe the resource and identify any project-related impacts on the resource. Describe any measures to minimize or avoid adverse impacts. A. Archaeological,historical or architectural resources A search of the Minnesota Archaeological Inventory and Historic Structures Inventory revealed no archaeological sites on the UMore property. Historic properties were identified; all are linked to the Gopher Ordinance Works. The following is the list of Previously Inventoried Architectural History Properties. The property locations are shown on Figure 25-1. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 104 Table 25-1 Nearby Resources-Previously Inventoried Architectural History Properties 9 -. irsi cn -- .., 00 lel 00 00 00 00-00 00 00 001 00 00 001 00 101 00 00 00 00 00 00 01. T1 01 tal ras 1.1 an na TIr 00 001 C6 9199-. 99.-11 4,9 49-999 .41. .01 •-e .0 101 .41 04 e-01 000 04 ,-I ..--■ .--• .--. 1.4 nl. .-1 .... ..-. ni a. sas a. oak a. Ir.... 11. mi me 014 ILI, 1,1 14,1 in in 6101 in in Lin on U01. 10 WI 107 1.0 30 01 301 10 60 in in WI 301 1.0. UR 401 10 3.0 30 10 [01 10 60 CM n. = * * i'...i...., ...... ...4. tn. ........... _, -----J- _ .. „...... ..,..._ , , ....3 as al = = as ea 2 2 = = c.- ... - o -5 5. .3....4VC›.".-A.." Z00C"9'"." 8 2 = 22 25 =0":■ 2 2 2 2 2 2 2 2 3 2 2 2 4.0 S..?1MC c c, ..7.V M.S42 ' 5 :=.,2Z"9706I, tZ- *g 00G o rS.4.0." o_ EEEEEE ME E 2222 222 ..- EEE2EEEE2E 0030014 ._ ,.... .., o. V.• V, V V' v V V. V ..„.. - - -_, - - - ..... V ,.." 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'5 '5- 5 5 5 -5 5 --a 5 5 '5 '5 5 5 5 5 5 5 5 5 5 5 to Iv r..g to n2 I'i 3 a C I On a2, It to to CO 0= Ca to!CO On C 0 133 00 CM CC 1 it C a C I. C 0 GO to to an O. ED -sV _V _V V _,. V i," ..p ..4 v v ._v v .2 V V V V V _V _V _V' ..V _V _V _V V _tc" _V _rc V '.8- 8 8 8 8 8 8 8 8 8 8 . . 013 43 ar __se as 311 41 a 03 10 0.3 AO IL. MA ii■1 a an 9 .■ as as C. aJ as ... as as aa OJ ... 222 8 - 2 2 2 2 2 -22g2 2 2 2 2 2 2 - a a a - 2 a a -c a a a p 0 - a a C. a a -o to a V al 2 2 2 7i - 77 . 7 . 0 -7777l777f777. 477 : S f E E F 0 € st i E L a I. 2 a % E a a E E E. a E E S a n o W W W W W W W W W W W 88888888838388888 2 2...-3 City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 105 In 1942 and 1943,the U.S.War Department acquired about 12,000 acres of farmland in Dakota County for the construction of the Gopher Ordnance Works(GOW).The GOW facility was designed to manufacture smokeless gunpowder and related products, assisting the war effort by producing a propellant for American military ordnance. Production began in January 1945,and ceased in October 1945. Title to 8,000 acres of the property was transferred to the University of Minnesota in two stages:Approximately 4,700 acres in August 1947 and another 3,320 acres in March 1948. The 1947 parcel includes the land south of 170th Street and the western third of the land north of 170th Street.The 1948 parcel includes the eastern two-thirds of the land north of 170th Street. University research, including aeronautical, medical and agricultural projects, began on sections of the land immediately,frequently making use of some of the remaining 298 GOW buildings for studies and storage. Very few of the original World War II buildings remain today. In recent years,the University of Minnesota has undertaken studies which further address archeological, historical and architectural resources. A brief summary of these initiatives follows: March,2011—Final Environmental Assessment for the University of Minnesota Wind Energy Research Consortium Project—U.S. Department of Energy,Office of Energy Efficiency and Renewable Energy,Golden Field Office This study included an examination of cultural resources as part of a proposal for a wind turbine on a 212 acre section of land in the northeastern corner of the UMore property. The permanent construction footprint of the turbine facility occupies.6 acres. The wind turbine project was completed and began operation in 2012. The report can be found at: http://energy.gov/sites/prod/files/nepapub/nepa documents/RedDont/EA-1791-FEA- 2011.pdf September,2009—Phase 1A Archaeological Survey for the UMore Park Sand and Gravel Mining Environmental Review Services, Dakota County, Minnesota In October and November of 2008 and in September of 2009,a Phase IA archaeological survey of the UMORE site was conducted as part of the Sand and Gravel Mining Environmental Review(EIS). Since there was no federal involvement in the project,the investigation was compliant with applicable state mandates governing cultural resources such as the Minnesota Historic Sites Act,the Minnesota Field Archaeology Act,and the Minnesota Private Cemeteries Act. The report presents the methodology, previous cultural resources investigations in the project area, results of the Phase IA archaeological survey and recommendations regarding archaeological resources. The report can be found at: http://conservancv•umn.edu/bitstream/93303/1/UMorePhlAFinalReport September2009.p df City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 106 April,2006-A Historical Interpretation and Preservation Plan for UMore Park As a part of a broader comprehensive planning process that began in 2003,a historical plan was assembled for the UMore property in 2006. The plan included: • A literature search to trace the history and evolution of the site; • The identification of themes in the history of the site that may for the basis for possible future interpretative programs; • Development of a historic context narrative that addresses factors that have affected development and utilization of the site over time; • A baseline field survey to identify and inventory extant buildings,objects and structures on the site; • Evaluation of extant structures;and • Recommendations The report can be found at: https://conservancv.umn.edu/bitstream/60998/1/Lauber%2c%20John AHistoricallntrepret ationandPreservationPlanforUMorePark.pdf B. Prime or Unique Farmlands According to the Dakota County Soil Survey, many of the soils within the study area are listed as prime farmland soils. Prime farmland soils in Dakota County include the following map units: Chetek,Garwin, Kennebec Variant,Joy, Kennebec,Otterholt, Dickinson, Port Byron, Rockton, Lindstrom,Spillville,Tallula, Kingsley,Wadena,Waukegan, Kanaranzi, Estherville, Mahtomedi,Antigo, Harwick,and Bold. Figure 25-2 shows the distribution of dominant soil types on the UMore property. Waukegan silt loam covers 54 percent of the UMore Park property. Although this soil formed on a sandy outwash plain,Waukegan silt loam is very dark brown,silty,and rich in organic matter from centuries of growth of prairie plants. The initial 13 inches of topsoil below the ground level provides for moderate drainage, but within the sandy subsoil, drainage proceeds at rates of as high as 6 to 20 inches per hour. Because of the high drainage rates,irrigation is required during normal crop years to mitigate drought impacts. The Waukegan soils at UMore Park are highly suitable for building foundations; however, maintaining adequate vegetation on the site is required to control soil erosion. Prior to construction of the Gopher Ordinance Works (GOW),the soils beneath the site of the plant (24%of the property)also primarily consisted of Waukegan silt loam. However, the construction of the GOW, coupled with soil movement and other disturbances changed the topsoil in this area of the UMore Park site. Correspondingly,the soils within the footprint of the GOW were reclassified as Urban Land Waukegan Complex soils,although residual amounts of Waukegan loam and other higher quality soils exist inside of the former GOW boundaries as well. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 107 C. Designated parks,recreation areas,or trails A number of park,trail and open space areas are identified in plans by the City of Rosemount, Empire Township and Dakota County as well as within the University of Minnesota's Concept Master Plan for the development of UMore Park. Existing and proposed facilities include the following: Greenways Dakota County has an extensive network of existing and planned greenways that meander throughout the County. Segments of the planned greenway network pass from north to south through UMore Park starting just west of the DCTC campus. Another planned greenway passes through UMore Park near Blaine Avenue on the east. In Empire Township, a north/south segment of the planned greenway connects to the Vermillion Highlands MWMA and points further south. Greenways will need to be accommodated as UMore Park develops in the future. Whitetail Woods Regional Park Whitetail Woods Regional Park is a new 460 acre park owned and operated by Dakota County. Planning efforts for the park are ongoing. Vermillion Highlands Vermillion Highlands is a 2,822 acre modified research, recreation and wildlife management area (MWMA)jointly managed by the University of Minnesota and the Minnesota DNR in conjunction with Empire Township and Dakota County. The facility includes research; education and public engagement; public access for diverse, high-quality recreation;and wildlife management and hunting. In the future,trails from the UMore Park development may connect to trails in Vermillion Highlands. Existing facilities in Vermillion Highlands also include equestrian trails and the Dakota County Gun Club. Another wildlife management area (WMA) lies in Empire Township just to the west of Vermillion Highlands, immediately south of Whitetail Woods Regional Park. An aquatic management area lies south of Vermillion Highlands on the north side of the Vermillion River. Dakota Woods Dog Park Dakota Woods Dog Park is a 16 acre,wooded off-leash dog park located in Empire Township. Ames Soccer Complex at DCTC The Ames Soccer Complex is the City of Rosemount's newest park. The facility sits on approximately 13 acres of land just southwest of DCTC on land formerly owned by the University of Minnesota. D. Scenic views and vistas There are no significant views or vistas within the study area. Areas within Vermillion Highlands,just south of the UMore site have views to the Vermillion River. Planned greenway corridors by Dakota County as well as trail networks though UMore Park will provide recreational and viewing opportunities for the natural areas within the study area. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 108 The eventual and long-term change from agriculture to urban development forms will change the look of the area but is not expected to impact any significant views or vistas. Sightlines into the adjacent Vermillion Highland MWMA will be preserved through the retention of open space and as a result of the expected pattern of low-density residential uses in the area in the future. E. Nearby Resources Mitigation Plan • Currently, UMore Park is not receiving federal funding or permitting. Should federal funding or permitting be required in the future,the project: o Must comply with Section 106 of the National Historic Preservation Act of 1966 (Section 106); o The lead federal agency will be required to initiate consultation with applicable Native American Tribes;and o Additional architectural surveys may be required. • Erosion control measures will be required during construction to control the loss of Waukegan soils and other soil types susceptible to erosion. All disturbed areas will be required to be re-seeded and mulched as needed. • As appropriate,site and building plans will reflect and enhance any significant views of natural features. • Park dedication will be in conformance to the codes and requirements of the City of Rosemount and Empire Township. 26) VISUAL IMPACTS Will the project create adverse visual impacts during construction or operation? Such as glare from intense lights,lights visible in wilderness areas and large visible plumes from cooling towers or exhaust stacks? ❑Yes ® No If yes,explain. Development within the study area is anticipated to occur in a manner similar to the surrounding area in Rosemount and accordingly, no adverse impacts are anticipated resulting from implementation of the development scenarios. At the present time,the City of Rosemount is developing an active athletic park adjacent to the Dakota County Technical College that may include lighting. Should facilities be lighted, light spillage to adjacent properties can be controlled through screening and fixtures with appropriate cut-offs. The UMore Park Mining Area is located in the western portion of the UMore site. Gravel mining in the area is anticipated to occur for the next 25+years. During that time, berms and landscape screening will buffer visual impacts from adjacent properties. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 109 A. VISUAL IMPACTS MITIGATION MEASURES • Through the development review process,the City will require appropriate screening of development in the study area to control adverse visual impacts. 27) COMPATIBILITY WITH PLANS AND LAND USE REGULATIONS Is the project subject to an adopted local comprehensive plan,land use plan or regulation,or other applicable land use,water,or resource management plan of a local,regional,state or federal agency? ®Yes n No If yes,describe the plan,discuss its compatibility with the project and explain how any conflicts will be resolved. If no,explain. A. City of Rosemount Comprehensive Plan The City of Rosemount has an existing Comprehensive Plan in place that was completed in November, 2009. This Plan is consistent with the requirements of the Metropolitan Land Planning Act for plan updates.The plan was reviewed by the Metropolitan Council and found to be consistent with the regional policies and with Metropolitan Council's regional system plans.The plan complies with the requirements set out in Minnesota Rules 4410.3610,Subpart 1,which requires local comprehensive plans to address land use, transportation,and sanitary sewer systems and include an implementation program. The Future Land Use Plan as shown in the City's Comprehensive Plan designates the UMore Park Property as"AGR—Agricultural Research". While the three development scenarios represent interpretations of the University's Concept Master Plan for UMore Park that was adopted by the Board of Regents on December 12, 2008,Scenarios 1, 2 and 3 would require modifications to the Comprehensive Plan to allow the land uses that are being proposed. The AUAR area is designated as an "Ultimate Residential"area as shown on the Potential Ultimate Service Area Map in the Comprehensive Sanitary Sewer System Plan.This indicates that municipal sanitary sewer service is anticipated for the AUAR area at some point and future development would follow. Scenario 4 is consistent with the Comprehensive Plan as proposed and does not require an amendment. B. Empire Township Comprehensive Plan The AUAR area discussed in this document includes approximately 1800 acres within Empire Township.The Township has an existing Comprehensive Plan that was completed in August, 2009.The Township's Comprehensive Plan is consistent with the requirements of the Metropolitan Land Planning Act for plan updates,and was also reviewed by the Metropolitan Council and found to be consistent with the regional policies and with the Metropolitan Council's regional system plans.The Township's plan complies with the requirements set out in Minnesota Rules 4410.3610,Subpart 1. The 2030 Future Land Use Plan designates the majority of the property within the AUAR area as"University of Minnesota (UMORE)," including a "Mining Overlay Area,"and approximately 120 acres of"Public Park, Recreation and Open Space". A"Regional Trail Search Corridor" is also identified within the study area. Modifications to the Comprehensive Plan will be required to permit the land uses that are included in Scenarios City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 110 1, 2 and 3.Scenario 4 is consistent with the Empire Township 2030 Comprehensive Plan as proposed and will not require an amendment. C. City of Rosemount Zoning Ordinance In an effort to ensure the compatibility of land uses, prevent urban blight,and enhance the quality of life for its residents by protecting public health,safety,convenience and general welfare,the City of Rosemount has adopted a zoning ordinance.The AUAR area is currently zoned "AG—Agricultural". The "AG—Agricultural"Zoning District is primarily established to encourage the long term continuation of agricultural and related uses in the City in areas which are both suitable for agricultural and are not planned for urban development. In the AG Zoning District, permitted uses include agriculture;commercial greenhouses and landscape nurseries; commercial livestock,furbearing animals and fowl,dairy farming, and commercial horse stables;essential service facilities; keeping of horses;and single-family detached dwellings (1 unit per 40 acres). If the components of the land uses proposed in Scenarios 1, 2,or 3 are adopted through a subsequent amendment to the Comprehensive Plan,amendments to the Zoning Ordinance (Zoning Map)will need to occur in order to be consistent with any amendments to the Comprehensive Plan. New zoning districts may need to be adopted to accommodate the AUAR Low-Medium Residential, Neighborhood Center,Village Center,and Community Center land uses and innovative measures referenced in Appendix B.A small lot single family zoning district may be considered to implement the Low-Medium Density Residential land use.An evaluation will be needed to determine if the existing DT-Downtown zoning district can implement the various Center land use districts or if a new mixed use zoning district would need to be adopted. Use of planned development techniques is anticipated, as well. Scenario 4 is consistent with the Zoning Ordinance and will not require an amendment. D. Empire Township Zoning Ordinance To ensure compatibility with the Comprehensive Plan,comply with statutory requirements, and to protect the public health,safety and welfare, Empire Township has enacted a zoning ordinance.The entire AUAR area is currently zoned "AG—Agricultural Preservation".The AG Zoning District is intended primarily for application to those areas of the Township where it is necessary and desirable, because of the high quality of soils,availability of ground water, and/or highly productive agricultural capability and the use of land,to preserve, promote, maintain, and enhance the use of land for commercial agriculture purposes and to protect such land from encroachment by non-agricultural related uses,structures or activities. Permitted uses within the AG Zoning District include any and all forms of commercial agricultural and commercial horticulture;feedlots and poultry operations;farm buildings and accessory uses;farm drainage and irrigation systems;forestry and grazing;single-family dwelling units (1 unit per 40 acres); historic sites; home occupations;agricultural preserves; and publicly owned and operated wastewater treatment plants. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 111 If the components of the land uses included in Scenarios 1, 2 or 3 are considered through a subsequent amendment to the Empire Township 2030 Comprehensive Plan,amendments to the Empire Township Zoning Ordinance (including the Zoning Map)will need to occur for compatibility and consistency.Scenario 4 is consistent with the Zoning Ordinance and does not require an amendment. E. Metropolitan Council—2030 Regional Development Framework Portions of the City of Rosemount and Empire Township are designated as a "Developing Community"while other portions are designated as"Agricultural" in the 2030 Regional Development Framework.These designations indicate that the Metropolitan Council anticipates growth and development in these communities.Although the AUAR area is not designated as a "Developing Community", rather an "Agricultural"area,the Regional Wastewater System Long Term Service Area does identify this area as"potentially serviceable". Being designated as "Agricultural",the portions of both communities that are within the AUAR area are currently anticipated by the Metropolitan Council to preserve high-quality soils for existing or future agricultural use. The Metropolitan Council currently anticipates that investments in regional infrastructure such as roads,wastewater treatment, and park and open space will be for rural levels of service consistent with the intent to maintain agriculture. As the Council updates its system plans,the feasibility of providing regional services in response to potential development of agricultural areas both pre-and post-2030 will need to be further examined. As the Council's System Plan is currently written,the 2030 Regional Development Framework does not recognize development consistent with Scenarios 1, 2 and 3.The City of Rosemount and Empire Township will need to partner with the Council to identify potential community and regional infrastructure improvements and timeframes necessary to accommodate the UMore development scenarios as identified. Scenario 4 is compatible with regional policies including, but not limited to,working with local and regional partners to conserve, protect and enhance the regions vital natural resources; planning and investing in multi-modal transportation choices based on the full range of costs and benefits,to slow the growth of congestion and serve the region's economic needs;and working with communities to accommodate growth in a flexible, connected and efficient manner. F. Compatibility with Land Use Regulations Mitigation Plan • If the AUAR area develops as shown in Scenarios 1,2 or 3,changes will be needed to the City of Rosemount's Comprehensive Plan, Empire Township's Comprehensive Plan,the Metropolitan Council's 2030 Regional Development Framework,and both the City's and Township's zoning ordinances through the respective amendment processes. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 112 28) IMPACT ON INFRASTRUCTURE AND PUBLIC SERVICES Will new or expanded utilities, roads,other infrastructure or public services be required to serve the project? ®Yes n No If yes,describe the new or additional infrastructure or services needed. (Note:any infrastructure that is a connected action with respect to the project must be assessed in the EAW;see EAW Guidelines for details.) A. Municipal Water System Improvements Municipal water service will be provided to development in the study area. Water demand was estimated for each scenario based on proposed land uses. Impacts to the existing water system and water system improvements necessary to serve proposed land uses for each scenario were evaluated. With appropriate mitigation,the municipal water system can accommodate the development. Item 13 within the AUAR provides detailed analysis and specific mitigation. B. Storm Water Management Improvements Due to the conceptual nature of the development scenarios,the amount of impervious surfaces for each land use was estimated based on the estimates in the City of Rosemount's Nondegradation Report Dated December 20, 2007 and by characterizing the impervious surface amounts of existing developments in the City and Empire Township. The existing conditions and three proposed land use scenarios were evaluated. All three of the land use scenarios represent a similar amount of proposed impervious surface. Storm water management for any scenario can be provided through a combination of wet detention ponds and infiltration features.The soils within the study area will likely provide suitable conditions for achieving volume reduction and pollutant reduction through the use of infiltration. Item 17 within the AUAR provides detailed analysis and specific mitigation measures. C. Sanitary Sewer Improvements Sanitary sewer will be provided to the study area as it is developed. Wastewater generated from the study area will be directed to the MCES's Rosemount Interceptor sewer that discharges to the Empire Wastewater Treatment Facility(WWTF). With varying ground elevations,three new lift stations will be required to convey the wastewater to the Rosemount Interceptor under Scenarios 1, 2, and 3. There is potential for alternative sanitary sewer layouts where the flow can be directed downstream of the MCES lift station or west to the Rosemount Interceptor adjacent to Biscayne Avenue. Item 18 within the AUAR provides detailed analysis and specific mitigation measures. D. Traffic and Transportation The existing conditions were analyzed as the baseline for the future year analysis. Four development scenarios were analyzed including the no-build and three build scenarios. Future land development will have an impact on the operations of roadways and intersections in the project area. Increased trips from future development scenarios were used to forecast future traffic volumes and evaluate traffic operations on the roadway system within the study area. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 113 The year 2030 was assumed for the traffic analysis of each scenario for the full build of the site.The year was selected to represent the current transportation system analysis time horizon used by the City of Rosemount, Empire Township, Dakota County and Metropolitan Council. Full build out of the study area is highly likely to occur after the analysis time horizon. In addition,although concept planning has occurred on the UMore site, anticipated phasing of the planned development has not yet been finalized. It is anticipated that this analysis will be reviewed based on one of the following potential triggers, if deemed necessary: • With each proposed development proposal • With the City of Rosemount's, Empire Township and/or Dakota County's Comprehensive Plan updates • With the 5-year AUAR evaluation process Based on this analysis,the transportation improvements are outlined as mitigation measures. However,these represent a worse-case scenario and will be further refined with future five-year AUAR evolution as Comprehensive Planning for the City,Township,County, and Met Council are completed. E. Police and Fire Department Development will also have an impact on social services such as police,fire,and community activities. The City has its own police and fire department. The City has approximately 40 paid-on-call firefighters and approximately 18 police officers. These services will be provided to the study area. The City uses a ratio of residents to police officers to estimate the need for additional police service. At the 2010 US Census,the population for the City of Rosemount was 21,874. The UMore Park development calls for an increase of 20,000 to 30,000 people over the next 25-30 years. Keeping the same ratio of residents to police officers,the City will need to increase the number of police officers by 100%-150% by the time the area is fully developed.The City will evaluate the need for additional officers and will provide additional officers as needed.Similar increases for fire department staff and other community services may also be necessary. The City currently has two fire stations. Fire Station 1 is located on the west side of the city near Dodd Boulevard and Shannon Parkway. Fires Station 2 is on the eastern side of the city off Connemara Trail near Meadows Park. It is likely that the study area would be serviced by Fire Station 2 but a need for a third fire station will likely arise as the area develops. While Empire Township contracts with the City of Farmington for police and fire protection, the City and Township have an agreement that the UMore area is to be served by the City of Rosemount. It is anticipated the two entities will continue these services within the existing boundaries of the agreements as they currently do. Additional municipal staff would be anticipated to be needed and the increased demands for staff are expected to be commensurate with the level and density of the development. F. School System City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 114 The study area is located within Independent School District#196. There are four elementary schools in or nearby the study area. Rosemount also has one middle school and one high school. For the 2012 school year, enrollment at Rosemount area schools is as follows: Rosemount Elementary—664 Shannon Park Elementary—804 Diamond Path Elementary—759 Rosemount Area Learning Center- 153 Rosemount Middle—1,185 Rosemount Senior High—2,174 There are also two nonpublic schools located in Rosemount: First Baptist School which offers Pre K—12 and The Church of St.Joseph Catholic School which offers K—8. The Concept Master Plan was reviewed with the School District during the U of M's development of that plan. As the UMore site develops and population increases,the School District may need to explore building an additional high school as well as additional middle and elementary schools in viable locations. 29) CUMULATIVE IMPACTS Minn. R.4410.1700,subp.7,item B requires that the RGU consider the"cumulative potential effects of related or anticipated future projects"when determining the need for an environmental impact statement. Identify any past,present or reasonably foreseeable future projects that may interact with the project described in this EAW in such a way as to cause cumulative impacts. Describe the nature of the cumulative impacts and summarize any other available information relevant to determining whether there is potential for significant environmental effects due to cumulative impacts(or discuss each cumulative impact under appropriate item(s)elsewhere on this form). The UMore Park study area encompasses approximately 4,900 acres in southern Rosemount and northern Empire Township. The AUAR itself analyzed cumulative impacts of development in this area and identified impact to infrastructure. Guidance for the AUAR states that because an AUAR by its nature is intended to deal with cumulative potential effects from future development within the AUAR,the AUAR should focus on influence of the development by past, present,or reasonably foreseeable future projects outside of the study area. Cumulative impacts related to these interactions are discussed below: A. Past and Present Development In 2007,the City of Rosemount completed an AUAR for the CSAH 42/Akron study area which is a 1,500 acre area immediately north of CSAH 42 across from the Dakota County Technical College campus. That AUAR was subsequently updated in 2012. The analysis of infrastructure impacts as well as the City's Comprehensive Plan within the UMore AUAR takes into account development occurring within the CSAH 42/Akron study area. In 2010,the UMore Sand and Gravel Resources Environmental Impact Statement(EIS)was completed that analyzed impacts associated with sand and gravel mining in the western City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 115 third of the UMore AUAR study area that encompasses approximately 1,700 acres. The environmental impacts of the sand and gravel mining have been addressed in the EIS and the land use end point of the gravel mining in this area has been assumed to be the starting point for the AUAR analysis. In 2012,the Rosemount City Council approved the Large Scale Mineral Extraction permit for Dakota Aggregates to mine gravel on approximately 600 acres of land north of County Road 46 and east of Biscayne Avenue over the next 25 years. The permit includes the use of an additional 170 acres of land north of County Road 46 and west of Akron Avenue for mining ancillary uses(aggregate processing, concrete production,asphalt production,etc.)over the next 40 years. The mining is permitted to use Akron Avenue or Biscayne Avenue to access County Road 42 through 2028. After 2028, mining traffic will only be allowed to access County Road 46. Dakota Aggregates anticipates mining an additional 600 acres of land within Empire Township after the majority of the mining in Rosemount has been completed. Empire Township will need to review and approve that request before the mining in Empire Township can commence. There are two active gravel mining operations within Empire Township located south of the study area. B. Reasonably Foreseeable Future Projects Neither the City nor the Township is aware of any reasonably foreseeable future projects. The AUAR itself is a cumulative impact analysis. The UMore study area represents a large development. Through this environmental review process and the City of Rosemount Comprehensive Plan and Empire Township planning efforts,these cumulative impacts can be addressed and mitigation provided through infrastructure improvements,zoning regulations,and mitigation outlined in the environmental review documents. 30) OTHER POTENTIAL ENVIRONMENTAL IMPACTS If the project may cause any adverse environmental impacts not addressed by items 1 to 28, identify and discuss them here,along with any proposed mitigation. There are no other potential environmental impacts known at this time. City of Rosemount Final Alternative Urban Areawide Review August 21,2013 Page 116 Document Path'.K'.\01 62 9-06 0\GIStMaps\ReportFigures\Fi95-1_GeneralLocation.mxd Date Saved.1/14/2013 4'.21'.37 PM Z a ~ 7 H O >, o N I I Cl.) O V o as w l0 \-I bD Ei O i Document Path:1001829-060\GIS\Maps\Report,gures\Figs-2 USGS.mxd Date Saved:3/4/2013 10:15:15 AM . L , Z T V} M N a U w O N O \ c. O d" .. = c-1 CO 0 N C • a 'C.. 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I, 8 T 8• S I DOG PA 99 ... ‘ _,.. i •eS 9f#..9 i t.," r LONIE ROCK TRALHEAD se,r49,'.1 4/e 'T Legend gKi emwihnety a d<d / to w t) .oborivod:my I • n.9.1.,541, f • ,i4, .■ itv ■ ONE ROCK TRAIL • Poopcned<oseg,everated Craswng ■t ■■•...)I WHITETAIL Wm".H sifi.chGreerroury ■ ‘ WOODS ......Predmed Regonat Tral le oralagifund. 1 N., 4tekypr°, El .1 Ake,ate&vv.Tradinonenoungs , Eadung tacal T5.011 rm.1.01 Mai .....\t, — Potte.4 iglu.UMare Lim,and Om Uwe RTH .......T.., L MA AM 5 5 1 MILE I 190th ST W Parks, Recreation Areas and Trails 4 ROSEMOUI\IT -.. *,.5;711;1"-N City of Rosemount, Empire Township MN INIALNESCTA empire town shfp UMore Area AUAR NTS February 2013 Figure: 25-3...___ A N _ APPENDIX B University of Minnesota Vision, Concept Master Plan and Aspirational Goals APPENDIX B University of Minnesota Vision, Concept Master Plan and Aspirational Goals OVERVIEW The University of Minnesota is the owner of the 5,000-acre UMore Park property. Importantly,the University brings unique assets to the planning and development of the property through its mission of research,education and outreach. The University is a generator of new knowledge and ideas. The AUAR notes some the future opportunities and alternatives that can benefit development, based on the research and analysis that the University has completed to date. The development of UMore Park presents an unprecedented opportunity to accommodate future growth in a manner that can become a model of sustainability. UMore Park has the potential to help transform the regional economy by providing new employment opportunities and a stronger connection between locally sourced and produced goods and nearby populations. It can preserve the heritage and environmental quality of the area while creating exciting new centers of activity in Rosemount and Empire Township. UMore Park is unique in the nation. It is among the largest contiguous properties in the United States owned by a land grant university,and is currently the largest single-owner development parcel in the Twin Cities. As the sole owner, planning efforts for the project that have been under way for the past seven years have been guided by principles established by the University's Board of Regents in 2006. The overarching vision for the property includes: Stewardship: Best management of the property, its natural resources and future uses; Legacy: University research,education and public engagement that extends over generations;and Economic Development: Adding value to the region through job creation,workforce development, business development, entrepreneurial opportunities and education. These foundational elements of the vision will continue to influence the full build-out of UMore Park over the next 30 to 40 years. Innovation for the Future Forward-looking strategies and aspirational goals are discussed in the recent report The Sustainable Community at UMore Park: Aspirational Goals and Action Plan for Sustainability, released in March of 2012. With input from over 200 people and the guidance of the international non-profit BioRegional,a framework to examine sustainability based on 10 guiding principles was presented. Topics addressed include zero carbon,zero waste,sustainable transport,sustainable materials, local and sustainable food, sustainable water, land use and wildlife,culture and community, equity and local economy,and health and happiness. The report and a summary can be accessed at: http://www.umorepark.umn.edu/planning/SelectPublications/sustainability2012/index.htm A second report that characterizes ideas for future innovation,Infusing Sustainability into Planning and Development for UMore Park: Integration Plan, was also published in March 2012. An international 1 architecture, landscape architecture and planning team undertook a broad scale effort to link the ideas embodied in the January 2009 concept master plan and the action plan for sustainability described above with contemporary and emerging sustainability practices. Key ideas from the analysis such as place-making and landscape reconstruction will help shape the specifics of future development plans including examination of a stormwater strategy that draws its roots from the glacial structure of the landscape and an overall energy strategy. The report can be accessed at: http://www.umorepark.umn.edu/planning/SelectPublications/2012integrationplan/index.htm Past Planning Past planning efforts both inform and influence the UMore Park AUAR. They represent an expansive body of knowledge about the property, its development potential, its development form,and its relationship with the natural environment. Additional information about prior studies can be found at: http://www.umorepark.umn.edu/ The following is a brief summary of some of the key policy and planning initiatives. Strategic Planning In 2006,a University strategic planning steering committee proposed three scenarios that were plausible options for the Board of Regents to consider in meeting the University's guiding principles for the future use of UMore Park. After careful review,the Board determined that the appropriate course of action would be to add value to the property by developing a community. The vision for the property is documented in the November 2006 report Creating the Vision—The Future of UMore Park. The report can be accessed at: https://conservancv.umn.edu/bitstream/91520/1/UMoreVisionReport 112006.pdf The decision reached by the Board in 2006 set the stage for the preparation of this AUAR. The University's strategic planning steering committee based its proposal on analysis that was provided by Sasaki Associates in the October 2006 report UMore Park Strategic Plan: Sasaki Report to the University of Minnesota Outreach, Research and Education Park Steering Committee. The report can be accessed at: https://conservancv.umn.edu/bitstream/91519/1/SasakiUMoreParkStrategicPlan 102006.pdf Research and Discovery The University's strengths in publically engaged research,education and outreach offer continuous potential for innovation. In 2007, nearly 100 members of the University community participated on six academic mission task forces to explore ways that University research,education and public engagement could add value to a new community at UMore Park. The task forces engaged citizens through six public listening sessions and faculty, students and staff through two campus forums. More than 450 citizens and nearly 300 members of the University community participated and offered their perspectives. 2 Ideas were categorized under broad priority areas including education, energy,the environment, health and wellness,transportation, interdisciplinary opportunities. The report can be accessed at: https://conservancv.umn.edu/bitstream/46494/1/TaskForceReportFinalPrinter March2008.pdf Concept Master Plan In 2009,the consultant Design Workshop, Inc., in conjunction with the University's UMore Park team, completed the Concept Master Plan for the University of Minnesota's New Sustainable Community at UMore Park. The result of an intensive two-year planning process,the concept master plan identified a future development pattern for the UMore property and addressed key elements of sustainability and livability including the environment,the community,economic considerations,the arts and implementation. The study is a foundation element for this AUAR. The land use plan contained in the study is the basis for three of the four scenarios being reviewed and analyzed. The concept master plan document can be accessed at: http://www.umorepark.umn.edu/planning/concept/cmpbook/index.htm Application of Past Planning to the AUAR The AUAR follows the required format and components stipulated by the Minnesota Rules for environmental review documents. At its core, it includes information and analyses on traditional elements of required infrastructure including but not limited to water,sanitary sewer,stormwater drainage and transportation. Importantly, it also includes general references to practices and techniques that have emerged from studies undertaken by the University of Minnesota that have the potential to significantly enhance economic,environmental and social sustainability over the long-term. 3 APPENDIX C Peak Hour Traffic Operations Analysis UMore AUAR- Peak Hour Traffic Analysis The traffic operations analysis is derived from established methodologies documented in the Highway Capacity Manual2010 (HCM).The HCM provides a series of analysis techniques that are used to evaluate traffic operations. Intersections are given a Level of Service (LOS) grade from"A"to "F"to describe the average amount of control delay per vehicle as defined in the HCM. The LOS is primarily a function of peak traffic hour turning movement volumes,intersection lane configuration, and the traffic controls at the intersection. LOS A is the best traffic operating condition,and drivers experience minimal delay at an intersection operating at that level. LOS E represents the condition where the intersection is at capacity,and some drivers may have to wait through more than one green phase to make it through an intersection controlled by traffic signals. LOS F represents a condition where there is more traffic than can be handled by the intersection,and many vehicle operators may have to wait through more than one green phase to make it through the intersection.At a stop sign-controlled intersection, LOS F would be characterized by exceptionally long vehicle queues on each approach at an all-way stop, or long queues and/or great difficulty in finding an acceptable gap for drivers on the minor legs at a through-street intersection. The analysis techniques defined in the HCM is different for roadways and intersections. Roadway segment analysis focuses on the average daily volume to capacity ratio,while intersection analysis focuses on delay caused by the peak hour critical movements. It is therefore possible to have an efficient intersection located along a poorly operating roadway segment, or a poorly operating intersection along an otherwise free-flowing arterial. The LOS ranges for both signalized and un-signalized intersections are shown in Table A-1. The threshold LOS values for un-signalized intersections are slightly less than for signalized intersections. This variance was instituted because drivers' expectations at intersections differ with the type of traffic control.A given LOS can be altered by increasing (or decreasing) the number of lanes, changing traffic control arrangements, adjusting the timing at signalized intersections, or other lesser geometric improvements. LOS also changes as traffic volumes increase or decrease. Table A-1: Intersection Level of Service Measures Control Delay(Seconds) Signalized Un-Signalized A <- 10 <_ 10 B 10-20 10- 15 C 20-35 15 -25 D 35-55 25 -35 E 55-80 35 -50 F >80 > 50 Source:Highway Capacity Manual LOS, as described above, can also be determined for the individual legs (sometimes referred to as "approaches") or lanes (turn lanes in particular) of an intersection. It should be noted that a LOS E or F might be acceptable or justified in those cases where a leg(s) or lane(s) has a very low traffic volume as compared to the volume on the other legs. For example, improving LOS on such low-volume legs by converting a two-way stop condition to an all-way stop, or adjusting timing at a signalized intersection, could result in a significant penalty for the many drivers on the major road while benefiting the few on the minor road. Also, geometric improvements on minor legs, such as additional lanes or longer turn lanes, could have limited positive effects and might be prohibitive in terms of benefit to cost. Although LOS A represents the best possible level of traffic flow, the cost to construct roadways and intersection to such a high standard often exceeds the benefit to the user. Funding availability might also lead to acceptance of intersection or roadway designs with a lower LOS. LOS D is generally accepted as the lowest acceptable level in urban areas. LOS C is often considered to be the desirable minimum level for rural areas. LOS D or E may be acceptable for limited durations or distances, or for very low-volume legs of some intersections. The LOS analysis was performed using Synchro/SimTraffic: • Synchro,a software package that implements Highway Capacity Manual (HCM) methodologies,was used to build each signalized intersection and provide an input database for turning-movement volumes,lane geometrics,and signal design and timing characteristics. In addition,Synchro was used to optimize signal timing parameters for future conditions. Output from Synchro is transferred to SimTraffic, the traffic simulation model. • SimTraffic,is a micro-simulation computer modeling software that simulates each individual vehicle's characteristics and driver behavior in response to traffic volumes,intersection configuration,and signal operations. The model simulates drivers'behaviors and responses to surrounding traffic flow as well as different vehicle types and speeds. It outputs estimated vehicle delay and queue lengths at each intersection being analyzed. Existing (2012)Peak Hour Intersection Analysis The existing intersection operations were evaluated for both the AM and PM peak hours. Synchro/SimTraffic micro simulation software was utilized to model the area intersections with the existing peak hour turning movements,lane geometry,and traffic control.The results of this analysis are illustrated on Table A-2. The existing roadway network generally performs at acceptable conditions (LOS D or better) in the AM and PM peak hours.The only exception is the CSAH 42/US 52 NB Ramps intersection which operates at LOS E in the AM peak hour. This is due to high traffic volumes on CSAH 42 and a lack of traffic signals at the intersection to allow vehicles to clear the northbound approach. Table A-2: Existing (2012) Intersection Level of Service Existing Existing • Intersection Traffic AM PM Control LOS Delay LOS Delay (sec) (sec) TH 3&CSAH 42 Signalized c 24 D 36 Biscayne Ave&CSAH 42 Thru-Stop A 3 A 5 CSAH 42&145th St Thru-Stop A 9 A 4 Akron Ave&CSAH 42 Thru-Stop A 4 A 3 Blaine Ave&CSAH 42 Thru-Stop A 3 D 29 US 52 SB Ramps&CSAH 42 Thru-Stop A 10 A 8 US 52 NB Ramps&CSAH 42 Thru-Stop E 49 A 6 TH 3&CSAH 46 Signalized C 28 C 29 Biscayne Ave&CSAH 46 Thru-Stop A 5 A 6 Akron Ave&CSAH 46 Thru-Stop B 10 A 9 US 52 SB Ramps/Frontage Road(W)&CSAH 46 Thru-Stop A 3 A 7 US 52 NB Ramps/Frontage Road(E)&CSAH 46 Thru-Stop B 10 A 4 Source:WSB&Associates,Inc. Future 2030 Peak Hour Intersection Analysis The future 2030 traffic volume estimates for each scenario were developed based on the trip generation estimates in Table 21-4 and assigned to the roadway system based on the trip distribution shown in Figure 21-4. The projected 2030 traffic volumes were then added to the 2030 No Build (background) traffic to estimate the 2030 build traffic volumes. The estimated AM and PM peak hour turning movements for both the No Build and Build conditions are shown in Figures 21-5 to 21-8. A summary of the expected traffic operations on the key intersections is shown in Tables A- 3 and A-4. The analysis of the 2030 No Build Condition shows the following roadway deficiencies: • The intersection of TH 3 and CSAH 42 operates poorly, especially in the PM peak hour, due to a lack of lanes to handle the projected traffic volumes. The intersection operates at LOS F in the PM peak hour. • The high southbound traffic volumes at the Blaine Avenue and CSAH 42 intersection, coupled with a single left-through-right lane, cause traffic to queue resulting in unacceptable LOS operations at the intersection in the PM peak hour. • Even with signals installed at the CSAH 42/US 52 Ramp intersections,the lack of available turn lanes on the SB off-ramp and through lanes under the bridge severely degrade the operations at the intersection in both peak hours. The analyses of the Full Build Scenarios show that all key intersections will operate at LOS F conditions in either the AM and/or PM peak hours without mitigation. Table A-3: Future 2030 AM Peak Hour Intersection Level of Service Full-Build Full-Build Full-Build 2030 No Build Scenario 1 Scenario 2 Scenario 3 Intersection Traffic AM AM AM AM Control LOS Delay LOS Delay LOS Delay LOS Delay (sec) (sec) (sec) (sec) ��99�� TH 3&CSAH 42 Signalized D 48 F 663 102 ',. F 654 Biscayne Ave&CSAH 42 Signalized B 14 F 220 ii, 200 j,IIF 201 CSAH 42&145th St Signalized D 53 F 200 e, I 180 lir 260 Akron Ave&CSAH 42 Signalized B 19 F 269 213 290 Audrey Ave&CSAH 42 Signalized NA NA F 200 IF i'' 160 F 210 Blaine Ave&CSAH 42 Signalized C 24 F 332 IIF 328 up F 403 US 52 SB Ramps&CSAH 42 Signalized F 117 F 756 681 i F 767 US 52 NB Ramps&CSAH 42 Signalized D 36 F 453 IF 459 II F 506 TH 3&CSAH 46 Signalized D 54 F 494 IF 178 111 F 508 Biscayne Ave&CSAH 46 Signalized C 24 F 197 219 II..F 246 Akron Ave&CSAH 46 Thru-Stop B 11 F 234 111F i 222 IP F 248 Audrey Ave&CSAH 46 Thru-Stop NA NA F 200 lik,iti 210 F 220 Blaine Ave&CSAH 46 Thru-Stop NA NA F 200 MN 210 F 220 US 52 SB Ramps/Frontage Road(W)&CSAH 46 Signalized A 7 F 259 Mil 256 F 249 US 52 NB Ramps/Frontage Road(E)&CSAH 46 Signalized B 13 C 32 C 30 D 40 Source:WSB&Associates,Inc. Table A-4: Future 2030 PM Peak Hour Intersection Level of Service 2030 No Build Full-Build Full-Build Full-Build Scenario 1 Scenario 2 Scenario 3 Intel Traffic PM PM PM PM Control LOS Delay LOS Delay LOS Delay LOS Delay (sec) (sec) (sec) (sec) TH 3&CSAH 42 Signalized F 151 i 588 F 1 603 P 601 Biscayne Ave&CSAH 42 Signalized C 22 242 F i4 270 FL 287 4 CSAH 42&145th St Signalized C 22 P 150 F r 160 F 150 Akron Ave&CSAH 42 Signalized B 18 P 184 F 188 F 170 i Audrey Ave&GSM!42 Signalized NA NA 150 F 160 F 150 Blaine Ave&CSAH 42 Signalized F 109 427 F'- 472 487 US 52 SB Ramps&CSAH 42 Signalized E 76 l 843 737 915 US 52 NB Ramps&CSAH 42 Signalized C 31 Fl 364 295 F 463 Y II TH 3&CSAH 46 Signalized D 47 p 352 272 F 345 Biscayne Ave&CSAH 46 Signalized C 21 Fl 1 197 224 F 292 Akron Ave&CSAH 46 Thru-Stop A 10 F 290 285 F 377 Audrey Ave&CSAH 46 Thru-Stop NA NA 250 240 F 300 Blaine Ave&CSAH 46 Thru-Stop NA NA ' 250 240 F,. 300 US 52 SB Ramps/Frontage Road(W)&CSAH 46 Signalized B 15 - 301 286 F" 279 US 52 NB Ramps/Frontage Road(E)&CSAH 46 Signalized B 11 126 98 133 Source:WSB&Associates,Inc. Based on the results of the peak hour traffic analysis the following improvements would be needed with full-build out of the UMore development. Based on these improvements,the AM and PM peak hour level of service at the key intersections is shown in Table A-5. All intersections are assumed to operate at LOS D or better in the peak hours with the exception of the Blaine Avenue/ CSAH 42 intersection in the PM peak hour where it is anticipated to be operating at LOS E conditions in Scenario 3. • Reconstruction of CSAH 42 to a six-lane divided roadway with traffic signal systems and turn lane additions at Biscayne Avenue, 145th Avenue,Akron Avenue,Audrey Avenue,and Blaine Avenue.Turning movements and proposed lane geometry have are shown on the turning movement figures for major intersections along CSAH 42. Future studies will be needed to determine the exact required geometry. • Reconstruction of CSAH 46 as a four-lane divided roadway with traffic signal systems and turn lane additions at Biscayne Avenue,Akron Avenue,Audrey Avenue, and Blaine Avenue.Turning movements and proposed lane geometry have been shown on the turning movement figures for major intersections along CSAH 46. Future studies will be needed to determine the exact required geometry. • Construction of an interchange to replace the existing TH 3/CSAH 42 intersection. Interchange geometry will be proposed with future studies. • Reconstruction of the existing interchange at CSAH 42 and US 52 as a system interchange to accommodate higher turning movements.The City of Rosemount's and Dakota County's 2030 Comprehensive Plans have identified this interchange as potentially serving a rerouted alignment of TH 55 in the future.With or without the additional traffic caused by the potential realignment of TH 55,the interchange will need to be reconstructed to handle development traffic with future interchange configuration and lane geometry will be determined in future studies. • Addition of lanes for through and turning movements at the interchange at CSAH 46 and US 52.Additional analysis will be needed to determine whether a complete reconstruction of the interchange will be needed to accommodate future traffic volumes with the existing infrastructure. Bridge widening may be considered as an alternative to complete reconstruction at this interchange. • Reconstruction of the signalized intersection at TH 3 and CSAH 46 to include more turn lanes and through lanes on all approaches. • Construction of a four-lane undivided collector roadway between Biscayne Avenue east to CR 73 (Akron Ave) and a three-lane undivided roadway from CR 73 (Akron Ave) through the UMore development with turn lanes provided at major intersections and traffic control as necessary. • Reconstruction of Biscayne Avenue as a four-lane divided roadway between CSAH 42 and Boulder Trail with turn lanes at major intersections. • Reconstruction of 145th Avenue as a four lane divided roadway from CSAH 42 to approximately Biscayne Avenue with turn lanes at major intersections. • Reconstruction and realignment of Akron Avenue as a four-lane divided roadway between CSAH 42 and the new east/west major collector and as a two-lane undivided roadway between the east/west major collector and 170th Street with turn lanes at major intersections. (Ultimately,the plan for Akron Avenue is to connect to Biscayne Avenue approximately one mile south of 170th Street to serve as a reliever to TH 3.) • Extension of Audrey Avenue from its current terminus south of CSAH 42 to 170th Street as a two-lane undivided roadway with turn lanes at major intersections. • Reconstruction of Blaine Avenue as a four-lane divided roadway between CSAH 42 and the new east/west major collector and as a two-lane undivided roadway between the new east/west major collector and 170th Street with turn lanes at major intersections. • Construction of local roads within the UMore development providing adequate service to each zone of development with turn lanes and traffic control as needed for safe and efficient traffic flow. Table A-5: Future 2030 Peak Hour Intersection Level of Service with Mitigation Full-Build Full-Build Full-Build Traffic Scenario 1 Scenario 2 Scenario 3 Intersection Control AM PM AM PM AM PM TH 3&CSAH 42 Future Interchange Biscayne Ave&CSAH 42 Signalized D D C D C D CSAH 42&145th St Signalized D C D C C C Akron Ave&CSAH 42 Signalized D D D D D D Audrey Ave&CSAH 42 Signalized C D C C C C Blaine Ave&CSAH 42 Signalized D D D D D E US 52 SB Ramps&CSAH 42 Reconstruct Interchange US 52 NB Ramps&CSAH 42 TH 3&CSAH 46 Signalized D D D D D D Biscayne Ave&CSAH 46 Signalized D D D D D D Akron Ave&CSAH 46 Signalized D D D D C D Audrey Ave&CSAH 46 Signalized C D C D C D Blaine Ave&CSAH 46 Signalized C D C D D D US 52 SB Ramps/Frontage Road(W)&CSAH 46 Partial or Full Reconstruction of Interchange US 52 NB Ramps/Frontage Road(E)&CSAH 46 APPENDIX D Summary of Public Involvement Process August 21,2013 Summary of Public Involvement Process—UMore AUAR The UMore AUAR process began in June 2012. As part of this process, a public involvement plan was developed and implemented. A summary of this process and outcome is outlined below. Public Input Process Public Meeting#1: The first public meeting was held on May 8, 2012. The purpose of this meeting was to provide information on the purpose and content of an Alternative Urban Areawide Review(AUAR),discuss the AUAR process,and review the development scenarios that would be reviewed in the AUAR. This meeting was open to the public. Landowners located north and northwest of the study area were invited and the meeting was noticed in the Rosemount Town Pages. Public Meeting#2: The second public meeting was held June 24, 2013 held during the 30-day public comment period to review the contents and analysis in the AUAR. Invitations for this meeting were sent in the same way as the first public meeting.The meeting was also noted in the Rosemount Town Pages. Agency Input Process Agency Meeting#1: A kick off agency meeting was held on June 20, 2012. All agencies listed by the EQB as commenting agencies for the AUAR were invited to this meeting. The purpose of the meeting was to provide an introduction to the UMore study area and the development scenarios, discuss the level of detail that would be in the AUAR,and receive feedback from the agencies. It was also discussed that future agency meetings would be topic specific and that while all the agencies would be invited to attend,they could self-select based on the topic in relation to their agency's review area of the AUAR. The meeting minutes from that meeting are attached. Agency Meeting#2: On January 9, 2013, an agency meeting to discuss ecological resources/wildlife and storm water management was held. Agencies in attendance included DNR, Dakota County, Met Council, Dakota SWCD,Vermillion River Watershed Joint Powers Organization,and the Department of Agriculture. Questions from the agencies related to connections to Vermillion Highlands; infiltration requirements and groundwater; and data from the DNR. Based on comments and questions from this agency meeting,these sections of the AUAR were revised. Agency Meeting#3: On February 27, 2013, an agency meeting to discuss water/wastewater and traffic/air/noise was held. Agencies in attendance included Dakota County, Met Council,and Department of Health. Questions from the agencies included concerns about contamination of drinking water from surface water;available right-of-way for future transportation infrastructure;walkability and connection to trails;and local road connectivity. Agency Meeting#4: On March 13, 2013 an agency meeting was held to discuss geologic hazards, land use, pollutants, and sensitive resources. Agencies in attendance included August 21, 2013 MPCA, Dakota County, Met Council,and Department of Agriculture. No changes to these sections of the AUAR were made based on this meeting. Agency Meeting#5: An all agency meeting will be held during the 30-day comment period to review the full AUAR. PCA and EQB Meeting: On February 19, 2013, City staff met with Gary Krueger of the PCA and Jeff Smyser of the EQB regarding how to describe the contamination at UMore Park. The discussion concluded that the AUAR mitigation should state that the environmental investigation and clean up will occur before development. Discussion also included that land use boundaries may be adjusted based on the clean up required. August 21,2013 MEETING MINUTES UMORE AUAR Agency Meeting#1 June 20, 2012, 1:00-2:30 Rosemount Council Chambers Attendees: Kim Lindquist(City of Rosemount),Eric Zweber(City of Rosemount),Andy Brotzler (City of Rosemount),Mark Koegler(HKGi),Craig Affeldt(Pollution Control Agency),Becky Balk (Department of Agriculture),Lynn Thompson(Dakota County Planning),Jeff Harthun (Dakota County Environmental Management),Jamie Jurgensen (Robert Trail Library),Scott Peters (Dakota County),Kurt Chatfield (Dakota County),Dean Johnson (Empire Township),Andi Moffatt(WSB), Alison Harwood (WSB),Chuck Rickart(WSB),Tim Bremicker(DNR),Carla Carlson (UMore),Steven Lott(UMore) 1. Introductions/UMore Park Overview: UMore Park will: • Involve approximately 5,000 acres of land • Be located in Rosemount and Empire Township (Rosemount is RGU for AUAR) • Provide residence for 25,000-35,000 people (Depending upon Land Concept Plan) • Provide 18,000-24,000 jobs (Depending upon Land Concept Plan) • Provide transit opportunities to the north • Designate open space and water bodies throughout the area 2. Review of Concept Plans • Land Concept 1:involves a higher density of residents (approximately 34,000 people) • Land Concept 2:similar to Land Concept 1,but involves a lower density of residents (approximately 25,000 people) • Land Concept 3: developed based on City Council comments;has more area designated as a business park and highest workforce ratio 3. AUAR Overview/Agency Coordination • The AUAR will involve: o An analysis of the following items for the 3 scenarios and existing conditions: • Land Use • Ecological Resources • Storm Water • Water/Wastewater • Geological Hazards/Hazardous Wastes • Traffic • Sensitive Resources • Compatibility with Plans • Impact on Infrastructure August 21,2013 • Cumulative Effects o Results of the analysis o Mitigation to address impacts o Agency coordination: Coordination meetings will be held throughout the process,with agendas delivered to agencies in advance so they can decide if they want to attend. o Public input: Public meetings will be held throughout the process. One has been completed and 2 more will follow development of the draft AUAR. • The AUAR will not provide a detailed study of all impacts,but may identify mitigation measures necessary to allow development. 4. AUAR Schedule • AUAR development has started and is anticipated to be completed in approximately 1 year. • The tentative schedule to AUAR approval is: 1. Development&Analysis (Summer 2012-Spring 2013) 2. Submit AUAR&30-Day Comment Period (Spring 2013) 3. Public Meetings (TBD Spring 2013) 4. Respond to Comments&Revise AUAR(Summer 2013) 5. 10-Day Public Comment Period (Summer 2013) 6. City Council Adoption of AUAR(Summer 2013) 5. Questions/Comments • Department of Agriculture (Becky Balk): How will Project Management Team (PMT)be communicating concept plans with the local immigrant farming population? Responses: o The family spokesperson for individual families will be the contact between those families and the PMT. o They will be invited to the Public Meetings. o When the time comes for relocation,the families will be given at least 1 year's notice so they do not lose a growing season. • Department of Agriculture (Becky Balk):Will farming be allowable post-development? Responses: o Conceptually,the area will be developed gradually,so interim uses could involve agriculture."Interim"will likely be long(i.e.,30-40 years). o The green space indicated in the concept plans is not intended for agricultural use. o The final,fully developed concept plan is not planned to include significant agricultural uses. August 21,2013 • Empire Township (Dean Johnson): In previous discussions,there have been recommendations for"locally grown"food options. If the final developed concept plan is to be"sustainable",farming should be an option. 6. The next agency meeting will tentatively be held in August. • Agendas will be distributed via email to the Agency representatives approximately 1 week in advance of the meeting. • Kathie Hanson will be the city's clearing house for information requests kathie.hanson@ci.rosemount.mn.us. NOTE: The above constitutes WSB's understanding of the items discussed at this meeting. If there are any questions,comments,or changes,please notify Andi Moffatt immediately at(763)287-7196 or amoffatt @wsbeng.com August 21, 2013 APPENDIX E Works Cited/References Works Cited 106 Group Ltd.,September 2009. Phase IA Archaelogical Survey for the UMore Park Sand and Gravel Mining Environmental Review Services,Dakota County, Minnesota. Barr Engineering, February 2012. Remedial Investigation Report. Barr Engineering, February 2011. Remedial Investigation Report. UMore East, Dakota County, MN Barr Engineering,April 2011. Phase I Environmental Site Assessment. UMore East, Dakota County, Minnesota. Barr Engineering, December 2010. Phase I Environmental Site Assessment,Vermillion Highlands Property. Dakota County, Minnesota. Barr Engineering, 2010. UMore Park Wind Turbine Project Loggerhead Shrike Survey. Barr Engineering,August 2010.Technical Memorandum—Preliminary Investigation, Naval Intelligence Reserve Center Gun Ranges. Barr Engineering, May 2010.Technical Memorandum—Preliminary Subsurface Investigation Results, Ancillary Use Facility, UMore Mining Area. Barr Engineering,April,23 2010. Predictive Simulations to Assess Potential Effect of Mining Activities on Groundwater, Resource Document for EIS. UMore Mining Area, Dakota County, MN. Barr Engineering,January 2010, Supplemental Site Inspection (SOC 4)/Remedial Investigation (SOC 5) Report. Barr Engineering, November 2009. Phase II Investigation Report,Site of Concern 1-3 and6-8. City of Rosemount. Wellhead Protection Plan (WHPP). City of Rosemount, December 20, 2007. Nondegredation Report. City of Rosemount,2007.Surface Water Management Plan. City of Rosemount Comprehensive Sanitary Sewer System Plan. Dakota County, 2005. Dakota County Ambient Groundwater Study. Dakota County, DATE. Dakota County Solid Waste Master Plan 2012-2030. Department of Natural Resources.Tomorrow's Habitat for the Wild and Rare:An Action Plan for Minnesota Wildlife. http://www.dnr.state.mn.us/cwcs/index.html Environmental Protection Agency, February 26, 2007.Control of Hazardous Air Pollutants from Mobile Sources. Historic Preservation and Community Planning,April 2006. A Historic Interpretation and Presevation Plan for UMore Park. Metropolitan Council Transportation Development Guide/Policy Plan. Minnesota Environmental Response and Liability Act, Minn. Stat. §§ 115B.01,et.seq. ("MERLA") Minnesota Statutes Section 116.07,Subd. 2a. Minnesota Rules 4410.3610, Subpart 1 Minnesota Pollution Control Agency,June 11, 1990. Record of Decision Soil Cleanup. University of Minnesota Rosemount Research site. Minnesota Pollution Control Agency, December 4, 1986. Minnesota Enforcement Decision Document. University of Minnesota Rosemount Research site. Peer Engineering,October 2006. Concrete and Soil Assessment, UMore Park. Peer Engineering,July 2006. Phase I Environmental Site Assessment, UMore Pakr. Peer Engineering,August 2003. Preliminary Environmental Investigation, Former Gopher Ordnance Works, UMore Park. Short Elliot Hendrickson Inc.,October 2010. University of Minnesota UMore Park Sand and Gravel Resources Project Final Environmental Impact Statement. U.S.Army Corps of Engineers—Omaha District, December 2009. Final Expanded Site Inspection Report. U.S.Army Corps of Engineers—Omaha District, March 2009. Final Focused Site Inspection Report— Former Ordinance Works. U.S.Army Corps of Engineers—Omaha District, March 2009. Limited Preliminary Assessment Report— Final—Steam Plant&Associate 26.7 Acres and Segments B, C,and D—Former Gopher Ordnance Works. U.S.Army Corps of Engineers—Omaha District, March 2006. Preliminary Assessment Report, Final Quitclaim Property, Former Gopher Ordnance Works, UMore Park. U.S. Department of Energy,Office of Energy Efficiency and Renewable Energy,Golden Field Office, March 2011. Final Environmental Assessment for the University of Minnesota Wind Energy Research Consortium Project. US EPA.June 14, 2012. Five Year Review Report, Fourth Five Year Review Report. University of Minnesota Rosemount Research Center Superfund Site. University of Minnesota,2010. UMore Park Sand and Gravel Resources EIS. University of Minnesota, December 12,2008 Concept Master Plan for UMore Park. University of Minnesota, Modified January 9,2013.Vermillion Highlands. http://www.vermillionhighlands.umn.edu/about/index.htm Versar,August 2010. 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W 3 .L c E a c a) -D 4 E o . °- 3 E v X o ° o `^ E a E v 'oo c O E 2 +, a) CD > -1:3 ° m > ° t E L O t c 0 0 v, 7 - t L C 0 w O m a) O .) a) .E pA Q E E H L O U H L CC U co u, D t H O. v) ca a co U L Q C v! a) a vs C +' L 7 o a) +O' co ° CO v, fa a) C 7 ,t„ v U v m 'a 7 C 0 a ca 7 > a) OL a-, C Y O = C C OD Co a) Co VI N 4_ < O_ is C • D C0 7 - " C Co L C U a-+ 7 v 7 3 m E v oN cca °' E m ° a) c L O - co C C CC v '- ° EO U O a) .> 7 .E O C U O ; c+'a To ° a) L 4 U C U U p- c-I L t L ° c c C 0 O x v O ei a--I (a aU+ E 7 o +� I a) > N N OA C 03 C -D O U M 7 O C 4- m O 3 o c U c cn +, • o .N -D '5 cp as a E a) L O +' N Co o W ) • •O O 7a 7 L >, Op pp 0 Z O a v; f6.F.0 - O t Co _ E » Q am o to m v, o U i 7 c .0 v; C Y _C a) m +� +' oA a) a) U •• t t vt 3 v ,n n. os o o.CO o *' '' N E O ca +� ca Y n C -6 0 Ca a) v � > a) �= O D. a a) -0 a) o av,) o +' 0 -0 0 c o .0 o `~ ca a) E a a) a) a n E C` a.) 4-, Uo a n_ ca n ;is) N > , O b to L N C a E a) . co E U) v O o E v v E c+ t , o a) n- 'O v, Q O N co• i ° U+' c c ) D c 0 co c E E v c .. — -o Q a) -a > ' O O .c O v- o �' aa) CO CO s te- Q CO a0 c) 3 3 c t v, +'▪ v.,, E c N 0 +' +, O V co E !_^ >- Q `3 n .N CO v) +' +' C o v E - • -0 ra = 7,+ • E U ° lb- w > = L o ' o o m v (13 L L ca n OC c o ai -6 O . > O CL > C O E O O n + O +Y 4J 0 O a N "" >__ > 4-, t . 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O C U C U i t to , n a) 'n v o 0 46' c a `° o 0 o rn v ? c ,+_ v v 4' p E > p Q C O 7 co Q (o a_+ C- Co C O_ of O 0- C a) •Co L 0 N .O' • z 0 r ,n o_ Q O NJ -C C +, C U � o U a a) vOi -O ' H n C a) U CD ;' +O•+ c -0 7 w ,n E c E 'n L 7 Q o 0 o .1_, 23 6 c i v E `° '� •- m 7 U C > Q N 7 C 7 c• 3 G C n. c Y v- U '° U +O, 7 O> a >� n i N U +, a) E a) rO y vi Q to d ra p 0 ° C c i) .-1 p • v 7 `0 F, v > 0 > ..n U v E a, v 7 0 0 7 vs a) a) c c -O a) co v — "' +, T cam) 0 o Q U C v d v to c p O v c a) w o 7 U .c ,c +, E c o L 3 Q a W o U L a) 1 Q Q 0 co 0- -0 +, N U w vi a) c a) ao x 0 2 t co a) 0 rtsc a) E L Q a) 0 co Y 0 a) C C 2 a) U C L 0 U U co C C (a C a) E a) da co C co 2 M O N N ,--1' tko +, O (a Q E tn +, °' }i, o.o s CO 4, Q ''' co aa, 0 3 a) Oa 3 C •a � -0 '" ++ a a) _, al v ") O C a) 4= CC C E U 0 c° ai c t -CS C, -0 L Q > L O •C C a) co J 4 Y p pp ,C, t GA ✓ ° u m a) E N +' (Oa _ +, +'w' -p +p' .ar) Ti c U 3 co c C v ° o c 0 O • o a) oa N Z• p p 4! b0 L C c LL 7 C 00 t •N c C c vs cca E C 0 O j c 0 W C y X a, a, a co O *' n0 t t- V/ 00 E coa C b. a)3 v o d •v -a +_ C o u 3o L N t t < ,_ 0 4 a +.4 c T 1-- v T �! a) eV o c O C .- C L Q a) u > co a U CU Cl)C O U m ++ a) ++ a) 0 U O ` O O h0 a L a) O N a, O O Z O a) 0 U) +- t r 73 C 4-' u a, p co L a CO" w- +; C v E U a) i o. 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Y a, d L t- +' CO .c 0 a) m■ o O ca (n 3 E N aa) 0 C ° -Q +, CU > o co n Y c rr ±, o n ° . ( U a; 0 3 v) a, v ' CO W ✓ 0 a "' s .i (o Q cco i s a CO c v o o +, 3 aa) a aci 3 v E O L +, +, N O U 0 a, 0 s ';_ (0 0 O +, N +, a > m o m N (° Q Q CO Q u c c ° 3 LO 4,, o v —aoi -0 3 f 6 ° a�i CU v v N v 3 O CO I- Q Q E Cl (C6 - (LO a Q U -0 Y a) Cl- U) +°, - 4-' N 0 0 E 0 N v N CD N v +s, N C O 0 aa'+ 3 0 OU E E v I '- '+'n ' Q ` U +, v v n C 3 U) CO 4-' t Q > C u v ir, Q }' ° u N T 70 LO 00 C ° +s, C C a) a-+ L (O +, -0 s N ro v c 3 (O N -Q cow th v N Q 3 co CO 0 v a) ▪ E 3 ac, a X 0 3 E u 3 E 3 a) 4, CO °' 0 a 3 s c VI -° O = N s a) o v ° o o E o s c v c C0 •�, c > °„' Of 0 (0 v 0 +, .> v, c a) E � v mo o ' (a ;., s co E N 'N N u a 3 N CO C .0 Q C 'o O N N L s a) L 4- L F- a-+ a-+ O C co (n +, C v +, E v C v ca c ° +O, +' +, +, +, E N N °° 0 0 «, a, 3 o U C o co Q - ° s f 6 ? o ro c ca v m O v 0 a a) h c s v 0 ao 0 U 4, D a U v o L u N 3 1= 0 3 p 3 L 'i N N ±, �-' CO N o E a Q a) Q s > v N °) co N +�+ a1 Q) '^ ra aJ a) L Q E N N a)a) v, 73 3 Lo 0 .6 LL s a) 3 Y O a) D U (o O O ry a) c0 O ° u co U (/) U O " += c O *' c I- a) U U < S2 '= 3 1- v- 3 -0 3 4- 3 v) I- •E 0 •Y2 Li D V +, cc L ° v CC 4-' N — c ILO Q) Q t co = p D v v +, s • '3 a a) ..0• 3 C +, 44. (o L la Q r• a'0 L O N m c N N a, co" a) ap U , 4' a -o C s T v N 0 j c a, 0 ~ -O N al E E L (6 N u L Y -O s a, (0 N C C N ✓ N v 4 ._ v m — 'o a v o o N ° a 3 a 3 4, ,_ C v C 4., a v) L N c E ° o a E ra a HI • C O 0 a) 1 0 U -° N (•) Li- O �, U O I E C E X Q a N co a ,--.1. N • o a v v v 0 3 a+ H ri C L -0 U 'U to v U = a) E 0 L 0) a) O Q o a'' O 0- a) N 0_ 0 () ±'' -0 0- 3 U .- N p C +, -0 Q 0- N vi c Lo a) N . c a) v N p + O > -C O C CO CO CO +s., _U O A O O vs O O o O a) d Q L C _ fO c6 >� a) O U -p c a) 3 Q ca C > a c aQ), >. C .v)— c p U E CO . I. cO }, ca Q v co v) w 3 E c m c o a) -, t CO U > -0 , o a) d -o -0 °- 0 U O a) >_ Q L L C > O 4_ a) a) a) a 0 v) N c Q .N C O co 0 cCi n 3 w CU co a) '^ n E °U c`o E co o f E -Oa > c L E m .5 u °v) 2 aaii E x ca a) LO cu a) 0 O U v co co a) >• v) a) < C C o a-+ t to 0 C .0 O L C -o C co m N o E c C o = > +� v E _a VII a) c = a) — O_ Q •N co a) v, L u (1 3 E H +. c O -a 7 m :~ aa, > c cu v C m mm o 3 p W c v o CL W a) C v N O (O +' >, co m 0 N -O C E LL a) a) U -0 o ao C a) L 0_ N > a) Q a) O_ Q vs co C 2 m QJ O N N •� }' N C ), O as-+ E >.. CO a) t L C ±' L C of a) f�6 aJ CU +-' v C O O U u 0 0 CO Q L fO a) t C L vI C > U U 7 CO O a 3 +•% E = a, v) •f– � 0 }' t o •a) _o L v � c z a) O c _ _ aj 'a-) '0 >. I— 0.0 4E' CO "1 0 as (6 . a..' § +•+ E c �, o c Q +� +, H a as) a) 0 3 co c ro p + v a v Y Q C v c E•+' v c v a) c E o o �' E p c C a) Q ca a) a) +� N O v O +•' „t° a) < O in -O +O+ +' c p O E E E a) O c6 ID E >, L E p U a) C = a) O E O O oO c E a) a) 4-' 0_ o_ < bp on CO - 3 .17) a, +� .L v O vOi a) p cO `n a) C f0 of L Y C ro C > N O L +•' �. Q C QJ +., •a) a-+ +.' C L CCD co C C Q) a)LL 7 C N U Q. ■ p O 3 N •— C v0i O -0 O w a) u c o v E E w E co m O at,, c}° o ) aa, C n a cu L •@ a1 C c O N Q) V) O '� U V) Q c (LO co v > C *L' > t a) o o ca 3 n co 3 v v co c v ° — E E a) ° o_ v o o Q +' I-- C .3 a) E CO a) 3 a) U i2)- L H L _ CD 3 Y + o_ •N ate+ C CU N to "0 C vt C C O y _6 • .� C a) ~"• — a) a) L T 4-+ • +, C ao E 4-' 'n °+�' OD 0 o "' aa, ca c = cco a) c'^o u m a) ou E o_ co a' = 2 c O C a, °c° y o c -0 ,+>� ~ n � n ca E C E 4- L u - Q cu t O_ Q O ) . a) C i '±Y O a) t O F- o v) 4_, 1- Q 7 co+, +, u +•O " = u a cO vi C — +.' C o L 3 0 co C a, L a) Q v) c a) a) v1 U = @ co CD > C a) _c -0 M >, in a) i a) c c m Y C O co a'' O U a) _1 v- m L Q N O co l0 O a ) L_ N L n C E N L i c '•N 0 O O N N et CO E H ) c u ' a i = co a _ amO= so C U N C „'LO L Cr a•+ > C O O L O N o a) VQj Ov O_ > U C +, 0 +L•+ a) U a) — a� U a) a. a) C •L CC LJ _ a1 V) ,e X co N O a) V O C CO Q) L C V) Q 0. Q f0 6' Q S Y c(6 CO c 0 -0 O 3 O N a, a, v °' o Y 3 N 4– I o E f° o I o f a) O 0- o ell N - O 0- N fO LL C N of H a•-I of C1A Ev > c , E � °� ° � 3 NCO a) ca L O a) O a) L O f0 iz L -o Q L N L U. Q CL V in O t cc C V; C O ° a < H .- ' U C 0 }, t13 4= as D 'O • CO Q C C C a C c CO L °' f6 a a ra a o E 7 ±'' U t a as .a-p, ,.- a L Q•O Y c in X L d E .0 c O p a a += +�+ ° t CU O Y Z Y > , a -O ,.., C Y CT V) L L -0 CO •C -" .0 3 ca o 0 Y O c .0 c >. t , 0 7 N w N Y ra + C 6 L C Q "O a "p A N p U1 Ga ra v a a) co U ar (6 O a +' > 'N N v1 d a C of i t a co 4- N OL as 1 a 'O PC or N ''' a )Yi) O j up CO c n. V) CL ra -0 C n N YO 7 N 'c 00 0 •- co W - C — a (U •C m u, L D N o_ m- c YO ID d 0 O a +in-' t O U_ a) v' a a O O Z v) N c +' Q v in p •C Y o a Y .L _ a) u t C t -O Q L C a s co m U o O t ~ a3) ° of 6i rca n C +L.+ t -C-, E a c a )n `- CO > YO as vv) a Q F- C a) 0 d a) a L Y a a a LE v aJ m C Y E I. +s N U v •- aai N -O c E •o. a _0 ° o 0 o m u Cl.) n o C a) o ° E ° a > a a v 'o Q. r„ ° c C a) • C a -a a °' N `9 E 0_ ° co Y C v Y °° a ttO Y E a L a C E v a to ° Q a) 0 Q Y a- 2 . 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O _ o 8 co > d) 0 .G �Q2 O M N MV CO � 9 > 0 O co C) 00 O a) a) o O co l� ci .ci er O V CO L. __ ...._.. d ').+• a) a 9 N m >U 't 0) r` ° 0)w O Co D - E 0� d' 0 O) U) $ N 3 N O Vi v 0 3 U N li a N "ti > o,a .) a p >� 00 0 V f6 O N 0 Op co co 0 O C to 3•6) E o O O O O O a =0 0 N E 0 w UN� E m s, o W '6 Q U) OCO co 0 co 0 N N G 4 j C 0) a-- O d, O7) cp U'X--`3 O O ci O X 0 uJ C > 3 c 6 r 5 Cri C ai u y U N CCi V U C 0. .(0—„,1"- C > Z' � > a > N >, .y.D a) t at -ca V � •E Q Q �U c >'C o �a � V c . om 8O 3d °� h Y ,_ ym 0 > > Lj J m¢ Q m �v N U�t3 i C O U N Y Y• • • Physical Development Division July 10,2013 Dakota County Western Service Center Eric Zweber 14955 Galante Avenue City of Rosemount Apple Valley,MN 55124-8578 2875145th Street West 952,891.7000 Rosemount,MN 55068 Fax 952.891.7031 www.dakotapounty,us • Environmental Resources Re:Dakota County Comments-Alternative Urban Areawlde Review-UMORE Study Area. Land Conservation Groundwater Protection Surface Water Mr.Zweber, Waste Regutationn • Environmental initiatives Tha.nk.yourfor the.,onTtortunity,to_comment o the AI ernative Urban.Area.wide Review for Office of Planning the UMORE Study Area. Operations Management Dakota County staff prepared the attached memo outlining .comments regarding Facilities Management transportation, greenways, and environmental resources as it relates to adopted County Fleet Management Parts plans and regulations. Transportation Thank you again for the opportunity to review. If you have questions or concerns regarding Highways Dakota County's comments, please contact Kurt Chatfield in the County Office of Planning Surveyor's Office and Analysis by phone at 952-891-7022 or by email at kurt.chatfieldtP co.dakota.mn.us. • Transit Office .inter Va • • Erin Stwo • Assistant Director,Physical Development CC: Commissioner Mike Slavik,District 1 • Commissioner Nancy Schouweller,District 4 Brandt Richardson,County Administrator • • .Yea en rec drn paper nvhth lax post.m-saner waste. N+caw0,4•0.J4n[mom • 2` Alternative Urban Areawide Review-UMORE Study Area IJuly 2013 1 Dakota County UMore Alternative Urban Areawide Review(AUAR)Comments: 1. Transportation a. Page 8, Section II. Executive Summary, vii. Transportation Mitigation Plan, Section B.: The County's existing Plat Review Needs map only indicates a need for a four-lane divided highway in the future.for CSAH 42. However, this need was based on the existing County travel demand model that does not include traffic analysis information for the UMore site. Therefore, it is reasonable to assume that the County's model and plat review needs will reflect a 6-lane need in the future. The County's guidelines require 100'of half right-of-way for 6-lane facilities. b. Page 8, Section II. Executive Summary, vii. Transportation Mitigation Plan, Section F; Consider revising the mitigating statement should as,"Provide right-of-way required for future roadway expansion adjacent and within the UMore property." c. Future access locations to CSAH 42 are limited to % mile interval spacing and/or in . accordance with the CSAH 42 Study.:recommer)d4tipns:.and„.amendments._;,,; ? ;.:... d. The document should incorporate text confirming that roundabouts are a potential intersection control measure and identify the traffic volume threshold they can be considered(similar to what is listed for interchange and signal alternatives in the Access and Intersection Control section). e. This development will have large scale impacts to the county and supporting local roadway system beyond the intersections assessed in this AUAR. It can be expected that the county road system/intersections beyond the limits covered here will need analysis of impacts as development is further identified and/or occurs. f. Non-comments / General Observations - in all three of their scenarios, the future alignments for 160th St W(CSAH 46),Akron Avenue(CSAH 73)and CSAH 71 appear to be - - consistent with recommendations, of, the: Rosemount / Empire / UMore Area ' -.:: .. Transportation•System Study. .It•.appears only the future=land•:use designations,in some. ' • locations differ by designation. 2. Greenways a. The AUAR correctly describes the Vermillion Highlands Greenway that runs north/south through the UMORE property, generally between Dakota County Technical College and Whitetail Woods Regional Park. For purposes of clarity, please include the attached map from the adopted Vermillion Highlands Greenway Master Plan in the AUAR • document. 3. Environmental Resources a. County Staff recommends a comprehensive approach be taken to offset future clean up and site restoration expenses before the UMore property is parceled,sold and developed. 1 3 Alternative Urban Areawide Review-UMORE Study Area July 2013 b. Page 1,Section I.Executive Summary,I.Introduction/Background: The UMore Study Area is located on the grounds of the former Gopher Ordnance Works,a privately- owned(i.e.non-federal) Formerly Used Defense Site(FUDS),as defined by the March 21,2002,U.S.Environmental Protection Agency Policy Towards Privately-Owned Formerly Used Defense Sites. "This policy contemplates that most response actions and cleanup activities at privately-own,non-NPL FUDS will be conducted under the Defense Environmental Restoration Program(DERP)and Comprehensive Environmental Response,Compensation,and Liability Act(CERCLA)." The Minnesota Pollution Control Agency has stated in correspondence to the United States Army Corps of Engineers (USACE)and the University of Minnesota(letters dated December 4,2009;January 30, 2009;and August 11,2008)that a"full and completed Remedial Investigation/Feasibility Study(RI/FS)is necessary for the entire GOW site,"which includes"an evaluation of the potential threats to the public from physical hazards and asbestos containing debris at the GOW site." Compliance with the FUDS manual may also be required. I. The AUAR anticipates that"...most,if not all of development within the study area will be undertaken by private entities,not the University of Minnesota, pursuant to land sales or ground leases,".. expected-to acquire and develop approximately 20%of the project area for public infrastructure and services. Prior to property transfers,due diligence should be exercised to investigate and remediate individual areas in accordance with their previous land uses,and reasonable and appropriate actions taken to protect public health and the environment from releases. c. Page 5,Section Ill.Summary of Mitigation Measures,ii.Water Use Mitigation Plan,D: This section indicates that abandoned wells found within the study area will be sealed in accordance with Minnesota Department of Health guidelines. Dakota County has delegated responsibility for wells within the county. Therefore,all abandoned wells •.,,,,,.,... -„ ,;, is ,, ,• -must be sealed in accordance with Dakota-County.Ordinance:No.114,"Well and Water '• •. .• - Supply-Management”,in addition to,MDH guidelines. - - ` -- ".R. 111 � t.. t a li). f1'.� - .. d. Page 5, Section II. Summary of Mitigation Measures,ii.Water Use Mitigation Plan,E: According to a letter dated July 25,2012 from the Minnesota Department of Health to the Rosemount City Engineer,the mine-pit lake(referred to in the AUAR as Lake 2162) created by gravel extraction below the water table will be hydraulically connected to the bedrock aquifer up-gradient of the Rosemount municipal wells. Furthermore,the mine-pit lake will be located within a highly vulnerable portion of the City's drinking water supply management areas(DWSMA);meaning that the aquifer may be impacted by activities at the ground surface and that Lake 2162 could be a direct conduit for contamination into the aquifer. As a result,measures should be planned to protect Lake 2162 from potential contamination. e. Page 18,Section iII.UMORE Study Area AUAR,9.Land Use.A.Existing Land Use: This section contains no mention of existing tenants at the UMORE site that generate hazardous waste or have the potential to cause contamination(e.g.Reese Enterprises— Astro Plastics Division, Bomb Squad demolition/training site). The descriptions of the investigations that have been conducted provide sufficient evidence that contamination 4 Alternative Urban Area wide Review-UMORE Study Area July 2013 exists on the old GOW site and other former tenant sites.Environmental conditions from past land uses vary widely across the UMore Study Area. Based on historical land use,hazardous materials that may be present include asbestos,arsenic,gunpowder, lead,petroleum products,PCBs,mercury,SVOC's, and other contaminants(see section III,9,F). f. Pages 20-21. Section III.UMORE Study Area AUAR,9.Land Use, E. Superfund Site Status: Although the 2011-2012 Five Year Review of the NPL sites at UMORE found the response actions protective of human health and the environment,the finding was explicitly based on current land use. This determination should be re-evaluated with any change of land use,such as those proposed in the AUAR. In addition,the Five Year Review did call for improved access controls,such as fencing,to limit public exposure to the significant physical hazards(broken concrete,protruding rebar,pits,trenches, tunnels,and others)present at the site. g. Pages 39-51. Section III.UMORE Study Area AUAR,13.Water Use,A.Existing Conditions: Prior to 1974,well records for newly installed water supplies were not -.. ;4,=v,:• -required:to be submitted to the state of Minnesota.-As a result;-the:number of wells in use or abandoned within the study area may be much greater than the records available for review in the County Well Index(CWI). Dakota County Groundwater Protection staff have been working with University of Minnesota staff to create an inventory of known and suspected wells within the study area. i. Water Use,Scenarios 1-3: Groundwater is proposed as the source of the community's water supply,but groundwater may not be an adequate or feasible long-term water source. The Metropolitan Council's 2010 Metro Area Water Supply Plan,Appendix 2(Community Water Supply Profiles),projected growth in maximum daily use for the City of Rosemount from 8.5 million GPO in ,;it,':L 1$-01 '},veu ;ant,WI 2010 to 29.6 million GPD in2050.This projection,did:not°include the planned-z s UMore•development•-That level of demand•for the Cityof•Rosernount as a whole resulted in projections for a"potential for significant decline in aquifer water levels,"with a"predicted decline in available head greater than 50%in confined portions of the Prairie du Chien Jordan aquifer under projected 2030 demand conditions." 1. On the other hand,the AUAR states that"UMore development would result in 3.64 MG of additional storage needs,"2.5 MG of storage more than anticipated in the City of Rosemount's 2007 Comprehensive Water Plan(AUAR,p.43). The AUAR's estimates of future need are not as high as the Metro Area Water Supply Plan:"The City's total maximum day demand upon complete development of the study area would 18.24 MGD(12,664 gpm)and average day of 6.078 MGD(4,221 gpm)." Regardless of which projection(29.6 million GPO or 18.24 million GPO) proves more accurate,the City of Rosemount will need to monitor groundwater,climate,and population trends and evaluate its options for providing water for future growth. 5 Alternative Urban Areawide Review-UMORE Study Area July 2013 h. Page 51,Section III.UMORE Study Area AUAR,14. Water-related Land Use Management Districts: Any alterations to Shoreland in Empire Township must be conducted in accordance with Dakota County Ordinance No.50,"Shoreland and Floodplain Management". i. Pages 73-74,Section ill.UMORE Study Area AUAR,19.Geologic Hazards and Soil Conditions,C.iii. Scenarios 1,2 and 3: The AUAR states,"Commercial and industrial uses are anticipated to be clean uses"and"...the potential for groundwater contamination and/or adjacent drinking well contamination should be no greater than, and is expected to be less than,the potential that exists with the existing agricultural land use." Commercial and industrial activities may be subject to County regulation of �: •: solid and hazardous wastes,in addition to federal and state regulations. J. Page 74,Section III. UMORE Study Area AUAR,19. Geologic Hazards and Soil Conditions,C.iv. Geologic Hazards and Soil Conditions Mitigation Measures: This • section lists construction site Stormwater Pollution prevention Plans as a mitigation measure. Due to the history of the study area, reliance on construction NPDES and . _ L., Lcontingency plans may not-be sufficient to identify hazardous-substances that might be' disturbed during construction activities. Prior to any excavation or other land-disturbing activities,due diligence should be exercised to investigate and remediate individual areas in accordance with their previous land uses,and reasonable and appropriate actions taken to protect public health and the environment from releases. ..._ . , •- ... •d"r! %i'l�l�'.;7�b':-?'�41:,:4))t:i..rl.."ft` .n .. � .. a @C. !a{1 f' .`f. ��''! 4! G�..,�t • -.�.,....�...•:..:..... -.,.. ,racww,t• 3 :r tt, .. . ... ... .. ..r�w.a s ...a va..., .rr,,. r From: Zweber.Eric. To: Hanson.Kathie Cc: Andi Moffatt Subject: PM:UMORE AUAR Date: Thursday,June 13,2013 12:35:35 PM From: Balk, Becky(MDA)[mailto:becky.balk @state.mn.usj Sent:Thursday,June 13,2013 10:49 AM To: Zweber, Eric Cc: Patton,Bob(MDA) Subject: UMORE AUAR RE: UMORE AUAR Dear Mr. Zweber: Thank you for the opportunity to comment on the UMORE AUAR. Because the City of Rosemount did such an excellent job keeping the participating agencies informed throughout the planning process; the Minnesota Department of Agriculture (MDA) does not have any comments to add. Sincerely, Becky Balk Principal Planner MN DEPARTMENT OF AGRICULTURE Agricultural Marketing & Development Division 625 Robert Street North I St Paul,MN,55155 651-201-6369(Direct Line) I Becky.Balk@state.mn.us riaitok . . ..ntl . . D MieSlita. ePartinent OrleanSpOrtatt01.1. Mettoeillith.District ( . -0A Waters 5t g,•-e,B Lild in i la- emnty'Rga03.g.:2:.,, :West . RoseVLI! i1N.55113 . , . . Jiily ao 20.11 ., . Xiin:Lindgniat". 00,0140110 00:010P1Mt.PitePtor eitylifaamook OityllajF2S15.7.-..-;1.450StreatW6st ,10.$001011.111,MN Wa-,4101, • . . StraYggr; PN400,0WAtt . Mn/DOT Review-11 Attal3',004.4• South of CSAR•42,between 11-11.04.MS SZ • i1.4.400#01.41A 0nd":!Oipite:Vvvp4 Thikota.Courity. •C.OlittOl m01'0.1,006 .D.00 Mk 14114titt Thank you for the ppportgpftyitpr.todowthe tIMOItt.AMR,. Please„nokithat Mi03.01.1kitki0 inf tilis'AlThit&faa iia,4.0.atitift.aptikokg,,44:ioiimot traffic analysis and is not wvecift6, approval for access ornewi•oadway*prevenient's.As plans oolt.fitieit we Would like the OpOrtilnitY'101000t vithWipattitell,g0totolot the gptiopt infOrmation. MnDOThaa: Tevieweiftlie,documentandliktbe itiltiiWig etnOttiente Design:, . .. . . . Any aignificantehangpsiathe State Hishway Syttetri4illtegaire.alvIrti)OT Lay011it, MOM' recommends the be completed by a.consultant is experienced working With MnDOTstandards anditaitet 0:kited:Malik Highway 404n. . .,... -.:, , • - • ' •••,•;, ..,,,- ,. . • The foll6WihgWth$4410.0,14o:layout design go:1000:;.40c)Went*layout requirements . • http://www:dOtAtita:mri.usidesfgrilgeoinitriciindex.htinl ,:. ... . ., ..... ,.., ,... • Onthe,iiglit sidmor th0above.00 iftwo.%zoiokLittke,the third bullet MVP' Opootilo,00$10:gmprpesl•direets.‘yotttothafallowingyiage:, . http:4dotapAdbtatate.tnn.us/edtnstdnWtitoad1ttocl&4636152 ..„. • FOr cinestions•-•00100M11$the igyput process and tuning,please contact Nancy.JacObsonxiMiit/OT Metro.tiesign,Section át.65142344647 1*.ifiP . , Page 8',ofttio February nth 40 .UMORE NUARTraffic-.StudyMemorantliin ideritifle:COStAl, proposed iinpr0V011)00t0*tho 200 No-Atiild4c000frPlease indicate whether the proposed r•iniprov0itentO are 04no..4 iitti#0.oneto:•Ourn1405 006011 04trid• SAlii:46,britig0 replacement and tumlanes at11162/041442,realigninent Of atop Ave,oito4:. Funding has identiad:for th0propoaodiniproyornenta on the-State Highway Systetn.. Please indicatelow theTroposed improvements reexpected to be finideot • { • � I • Figure 21-6A(Scenario 1 Full Development)shows 610 motorists traveling from eastbound CSAH 46 to northbound US 52. This is an increase of 590 vehicles over the no build alternative. Yet,the right turn which leads to the northbound US 52 did not increase with the no build option. Please correct if this was an error. • For questions concerning these issues,please contact David Sheen(651.234-7824)in MnDOT Metro District's Traffic Section. Modeling: The most prominent issue concerning the modeling for UMORE is that the methodology used for forecasting traffic is not effective for analyzing regional system impacts and needs.While the Dakota County Travel Demand Model was used to forecast 2030"background"traffic increases, it was not used for the forecast project impacts. The Regional Travel Demand Model or Dakota County Travel Demand Model should have been used to forecast the impacts of the increased 25,000-35,000 population and the 18,000-24,500 employment for the 7.7 square miles area. The ITE Trip Generation Manual is appropriate for estimating trips at the local level for small geographic areas,where the model does not provide enough detail.For a development of this size and scale,any analysis of the regional system should be done using the regional or County model 'in order to better assess internal trip relationships. Withor t•confidenoe in the regional traffic impacts,it's perhaps premature to adequately assess the detailed and more localized impact as well as the mitigation recommendations. While some trip reduction was applied to account for pass-by trips and internal trips,it's unclear how these factors were estimated. Page 9 of the traffic study notes that the trips assumed generated by the UMore development is"conservative." It is unclear how conservative is defined. The ITE Trip Generation Manual provides information concerning the trips arriving and departing by peak hours and by land use type,but not to and from distribution on the larger • system..It should be clarified how,the trip distribution was estimated(Travel demand model or•• , f(!I't,is qt' 1 I it.'i. a I\ elsewhere)' One of the merits of the proposed development seems to be to minimize non-motorized trips, which may reduce some traffic impacts. It would be helpful to see an estimate of non-motorized trips generated. For questions concerning these comments,please contact Jim Henricksen,MnDOT Metro District's Traffic Forecaster at 651-234-7782. Noise Mitigation: MnDOT's policy is to assist local governments in promoting compatibility between land use and highways. Residential uses located adjacent to highways often result in complaints about traffic noise. Traffic noise from this highway could exceed noise standards established by the Minnesota Pollution Control Agency(MPCA),the U.S.Department of Housing and Urban Development,and the U.S.Department of Transportation.Minnesota Rule 7030.0030 states that municipalities are responsible for taking all reasonable measures to prevent land use activities listed in the MPCA's Noise Area Classification(NAC)where the establishment of the land use would result in violations of established noise standards. 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Please StibmiC6itlidh: Cr4.0001uottoutoNtyoolou:olthe plafls, Mn/1Vrean.:teeotiithelgans;via • al:MelindevreViewi.dot@Shiliiiinn.us piovided that sepate 20:;• . Thite,(3):AtA emit size plum. Although 4013.1irtitthl goto..g.•$000.fttA size plans will eviditateleviewproeess. Plans can 1)0Aenttii: :M011)01-4461W,DiStrict PlilOing$0,011:911 1-).evelOtiinent Reviews Coordinator, itiO West County Road RosevilleoNN 551.13. onenvoirogui$ks.. 44§: Plans ooyAlaylo submitted to MniDOT's.:ExternalliTP Site :1400Se:Stild • • ftp//ftp2 dot state mu t,s/pjlb/iticàtnlng/MctrOWateYsfldge/PIaflhllflg Internet Explorer ileesiftwork using fiksupleitSonse an FTP Cltait'.00:0MiitlOWS.00)rer.(W ColtVlitel); M9;.0100:svotlif,,o note ta;metrocievreviews:ddiegiate.iiiii*indicating thatiVolAattl ten liiitted fitted on th6::PT. P 6.4.0; It YOU ItaVe:any quOtient,OOneetning this review:please feel flee to contact me at 051)234- Sittaeidl4 • TO 4:$.400.:011 r1tiitiklOtIper1i$0 Copy sent via E-Mail: Buck Craig,Permits Nancy Jacobson,Design Bruce Irish,Water Resources Lee Williams,Right-of-Way Jon Solberg,Area Engineer David Sheen,Traffic Pete Wasko,Noise and Air Jim Henricksen,Modeling Sheila Kauppi,Area Manager Ann Braden,Metropolitan Council • • .• • • • • .• MINNESOTA MDH DEPARTMENT OF HEALTH Protecting maintaining and improving the health of all Minnesotans July 5,2013 Eric Zweber Senior Planner City of Rosemount 2875 145th Street West Rosemount,MN 55068 Dear Mr.Zweber, Thank you for providing the Minnesota Department of Health (MDH) with the opportunity to comment on Draft Alternative Urban Areawide Review (AUAR) for the UMore Study Area project. Asbestos/Hazardous Waste`` The AUAR notes that site investigations have identified debris and abandoned structures that may contain asbestos. Prior to the demolition of structures or removal of debris that is identified as potentially containing asbestos, an inspection must be conducted according to 40 CFR 61 — National Emissions Standards for Hazardous Air Pollutants (NESHAP). Any required asbestos inspection activities must be completed in compliance with the Minnesota Asbestos Abatement Act and Rules,described in Minnesota Statutes, Sections 326.70 to 326.81 and Minnesota Rules. Parts 4620.3000 to 4620.3724. For additional information or for assistance interpreting the results of asbestos surveys, contact MDH staff at (651)201-4620 or health.asbestos- lead @state.mn.us. Additionally, a pre-demolition survey of structures must be conducted according to Minnesota Rules 7035.0805 to properly identify all hazardous waste. Specific . Questions concerning pre-demolition surveys_need to be directed to the Minnesota Pollution • Control Agency at(651)296-6300. Affordable Housing Preserving affordable housing supports home-ownership and housing stability, improves community stability, and fosters social networks. This is important for health in a number of ways. When residents spend less than 30 percent of pre-tax income on housing (affordability threshold) they have more money to spend on healthcare, doctor visits, medication, and healthy food. Additionally, instable housing— or frequent mobility— can cause stress and other mental health conditions like depression. The supply of stable, affordable housing is shrinking and demand is increasing. The project does provide a mix of housing densities but should also consider providing affordable housing options. Drinking Water Protection In two recent letters to the City, MDH discussed issues that remain unaddressed in the current AUAR.The first letter(April 2,2013) provided two guidance documents that relate to wellhead protection: 1) where mining activities are expected; and 2) where storm water infiltration is expected. The second letter (July 25, 2012) discussed the need for groundwater quality monitoring in connection with direct recharge from surface water into the aquifer, and within the General Information:651-201-5000•Toll-free:888-345-0823•TTY:651-201-5797•www.health.state.mn.us An equal opportunity employer Mr.Zweber UMore Study Area AUAR Page 2 July 5,2013 highly vulnerable portion of the Drinking Water Supply Management Area (DWSMA). These water quality concerns were not addressed in the AUAR and therefore,the points raised by these two letters continue to be current and valid. They have been resubmitted as attachments to this comment letter. Energy Consumption Reduced energy consumption results in decreased fossil fuel burning in power plants, and thus lowers carbon emissions from these plants. The project should consider ways, such as those described in the Concept Master Plan,to conserve energy,reduce energy use,eliminate or reduce greenhouse gas emissions,and promote the use of renewable energy. Health Impact Assessment A Health Impact Assessment(HIA)is a research and community engagement process that can be used to help ensure that people's health and concerns are being considered when decisions on infrastructure and land use projects are being made.The National Research Council defines HIA as"a structured process that uses scientific data,professional expertise, and stakeholder input to .. ., identify and evaluate public-health consequences of proposals and suggests actions that could be taken to minimize adverse health impacts and optimize beneficial ones."HIAs have been used to provide important health information to decision makers on a wide range of projects outside the typical health arena, including comprehensive plans, brownfield redevelopment, transportation projects,energy policies, and housing projects.Over 100 HIAs have been performed in the US to help improve public health. Ten HIAs have been completed in Minnesota, mostly on comprehensive plans and transportation projects. An HIA could provide recommendations to policy makers to support possible positive health outcomes and to mitigate or prevent possible negative health outcomes to improve the public's health and to inform zoning, permitting, monitoring,and other policies. .Physical Activity • ......... Encouraging physical activity by providing parks, recreational facilities, and trails can be an effective strategy to improve the public's health. Additionally, trips taken by bike or foot versus automobile save energy and do not emit pollutants or greenhouses gases. The project should consider bicycle and pedestrian connections and accessibility, such as those described in the Concept Master Plan, so that future users of the site would have safe and convenient access to these facilities. Storm Water Runoff/Impervious Surfaces The substantial increase in impervious surfaces at project build out will increase the amount of stormwater runoff from the site. Stormwater runoff picks up and carries with it many different pollutants that are found on paved surfaces such as sediment,nitrogen,phosphorus, bacteria,oil, grease, trash, pesticides and metals. Reducing stormwater runoff helps prevent contaminated runoff from entering streams, lakes and other water bodies, which may be used for recreational purposes or drinking water. Waterborne illnesses from recreational swimming and drinking water are associated with runoff.An increase in impervious surfaces also has been shown to lead to higher flood peaks. Future climate conditions are anticipated to result in increased frequency and intensity of storm events. The project should consider whether stormwater infrastructure and retention facilities Mr.Zweber UMore Study Area AUAR Page 3 July 5,2013 designed for larger storm events would be appropriate to accommodate anticipated future climatic events. Well Construction New wells that are constructed in Minnesota must be constructed according to the requirements of Minnesota Statutes, Chapter 103I,and Minnesota Rules, Chapter 4725.Any wells constructed for dewatering or water quality monitoring will be subject to these requirements. Abandoned wells will need to be properly sealed.Additional information is available on the MDH website at Well Construction and Well Sealing. For additional information, contact MDH staff at (651)201-4600 or health.wells @state.mn.us. Health starts where we live, learn, work, and play. To create and maintain healthy Minnesota communities, we have to think in terms of health in all policies. Thank you again for the opportunity to provide comments on this AUAR for the UMore Study Area. Feel free to contact me at(451)201-4927 or m ichele.ross @state mn.us if you have any questions Sincerely, Michele Ross Environmental Review Coordinator Environmental Health Division Minnesota Department of Health PO Box 64975 Saint Paul,MN 55164-0975 JEL MINNESOTA MDH DEPARTMENTOFHEALTH Protecting,maintaining and improving the health of all Minnesotans April 2,2012 Mr. Andrew Brotzler City Engineer-City of Rosemount 2875-145th Street West Rosemount,Minnesota 55068 • Dear Mr.Brotzler: I am writing this letter to provide the city of Rosemount(the City)with updated guidance documents regarding 1)"Wellhead Protection Issues and Strategies Related to Mining Activities"and 2)`Evaluating Proposed Stormwater Infiltration Projects in Vulnerable Wellhead Protection Areas." These documents have evolved since the Minnesota Department of Health(MDH)last discussed them with the City and we understand you are curreeitly working on an ordinance pertaining to large-scale 1:;. aggregate mining. MDH has no authority over local zoning or land use decisions and offers these guidance documents to you for reference in your decision process. It is the MDH perspective that the City should consider both the protection of its source water and the protection of the Prairie du Chien-Jordan regional aquifer. It is our understanding that some of the proposed mining activity and a resultant mine pit-lake will be located within a highly vulnerable portion of the City's drinking water supply management area(DWSMA),as approved in the amended Part 1 report(March 18,2011). A rating of high vulnerability indicates that waterborne contaminants could take only weeks to years to reach the aquifer,therefore great care should be taken in this portion of the DWSMA to prevent the release of contaminants during mining activities. The proposed mining activities will remove all of the unconsolidated material above the Prairie du Chien,which is a hi • ' highly"", .... - fractured bedrock that is hydraulically connected to the Jordan Aquifer in which the City's wells are completed. The resultant mine pit-lake could be a direct conduit for contamination into the aquifer and is located directly upgradient of City wells Rural Well 1 South(457167)and Rural Well 2 North (474335). We recognize the city's commitments to providing safe and clean drinking water to its residents. Please contact me with any questions regarding these MDH guidance documents(651/201-4658). Sincerely, JEL Joy E.Loughry,Hydrologist • Drinking Water Protection Section Environmental Health Division P.O.Box 64975 St.Paul,Minnesota 55164-0975 JEL:kmc • Enclosures General Information:651-201-5000 • Toll-free:888-345-0823 • TTY:651-201-5797 • www.health.state.mn.us An equal opportunity employer • • I�ItIi'■#iii, v MDH' LLt1:Li�L'd#� :1:111.11 Protecting,maintaining and improving the health of all Minnesotans - • • • July 25,2012 • Mr.Andrew Brotzler,P,E. • City Engineer-City.of Rosemount • • 2875-145th Street.West Rosemount,Minnesota 55608 • Dear Mr.Brotzler: Subject tIMore Mining Permit Document Review ' It is our understanding that the City of Rosemount(the City)is currently reviewing the permit application for the planned' More aggregate mine. We have reviewed some of the submitted documents and believe that there are deficiencies in the water quality monitoring strategy as proposed in the"Hydrogeologic Study and Water Monitoring Plan." In particular,it does not include provisions for evaluating changes in the water chemistry of the City wells that may result from the direct recharge from surface water into the aquifer.. The mining activities as proposed will result in a mine,_pit lake that will be hydraulically connected to the bedrock aquifer,upgradient of the City,weds, Aj,p xtion gthis laka will be located Withiii"aiii,h1Y vulnerable portien of the City's current Drinking Water Supply. Management Area(DWSMA). This lake will focus groundwater recharge into thebedrock • aquifer that is used by the City and will have the potential to affect the water quality in the aquifer,particularly if the city constructs more water supply wells in this area. The City should be-aware that the Minnesota Department of Health(MDH)may have to designate • affected city wells as groundwater sources that are under the direct influence of surface water . should changes in water quality reflect rapid surface water recharge to the aquifer. If this were to happen,the City may face additional expense in order to meet Federal surface water, treatment regulations. • The City is currently working on Part 2 of their wellhead protection plan. The proposed mining activities will need to be addressed in the section relating to the impact of land and • . water use.changes. This is also an opportunity to incorporate measures into your plan that will aid in determining the risks to your water supply that this mining activity may pose. • Adding specific measures to your plan that relate to characterizing or managing this potential source of contamination wilt.qualify the City to be eligible for MDH Implementation Grant funding to,help defray the cost of monitoring. • ` 9 ferallnforination:651-201-5000 • Toll-free:888-345-0823 • TfY:651-201-5797 • wwwhealth.state.mn.us - An equal opportunity employer • Mr.Andrew Brotzler Page 2 • July 25,2012 • We are available to discuss our thoughts on the proposed water quality monitoring plan for UMore Park and the measures that we believe should be incorporated into the Part 2 portion of your wellhead protection plan. Please contact Joy Loughry of my unit at 651/201-4658 for • any questions or discussion. • We recognize the City's commitment to providing'safe and clean drinking water to its residents and look forward to the opportunity to work with you towards that goal. • Sincerely, gatA./..At'A.�NGv • Brace M.Olsen,Supervisor . • ;: .. 'Source Water Protection Unit .. .. Environmental Health Division • • P.O.Box 64975 . . St.Paul,Minnesota 55164.0975 • BMO:JEL:kmc . • cc: Nancy Zeigler,P.B.,WSB&Associates . • Karen Voz,MDH Planner,St.Cloud District Office - Joy Loughry,MDH Hydrologist,St.Paul Office • • • • • • • • ft Metropolitan Council 1 July 9,2013 Mr.:Eric Zweber,AI"CP 2875.145th Street West Rosemount,MN 55068 RE: UMore Park Draft Alternative Urban Areawide Review Metropolitan Council Review File No 21138=1. Metropolitan Council District 16,Wendy Wulff Dear Mr.Zweber;. Metropolitan Council staff completed its review of the UMore Park Alternative Urban-Areawide Review' (AUAR)to determine its accuracy and completeness in addressing regional concerns. While the AUAR covers land in both the City ofltosemount(City)and Empire Township(Township),the City is'the Responsible Governnnental:Unit. Staffctitioltudes thaf'fhe'updated AIJ R is eo►nplete shit accurate with respect:to regional concerns"an'i raise's no major issues of consistency with Council policies.However,staff offers;the following comments: Item-8 Permits and Approvals In accordance with Minnesota Statute S e'ction 473.513,at the time the City:makes:application to the Minnesota Pollution Control Agency(MPCA)for a permit to construct each::segment of Sanitary sewer for-the proposed project,a copy of the plans,design data and a location map of the project will also need to be submitted to the Metropolitan Council. The Council's Environmental Service Municipal Services staff.will need to review,comment,and recommend issuance of the construction permit by the MPCA before connection can be made to the.City's wastewater disposal system. Item 9. Land Use The AUAR presents'three scenarios iiiv6Mng trtajol development iiiitialiiVe Z1n the"UMOre Park site(73 7 ' square miles).Scenario 1 represents a"village"build-out scenario with housing for 34,500 population and employment-supporting zones for 18;200 jobs.Scenario 2 represents a lower-density"village"build-out scenario with housing for 25,300 population and employment-supporting zones for 18,200 jobs.Scenario 3 represents a high er employment build-out scenario with housing for 31,400 population and employment-supporting zones for 24,500 jobs. Most of this,development is expected after 2030(the AUAR says 2028)and anticipates growth beyond the Scope of the City's 2030.Comprehensive Plan. Council Staff believe that the build-out targets described might be staged over a 20 or 30 year period extending to 2050.or 2060.At this time the Council has not established forecasts for 2040,2050 or.2060. If this development is incorporated into the City's and Township's Comprehensive Plan Updates for 2040; then staff can discuss appropriate population,household and employment forecasts in the context of growth in surrounding areas and regional growth including provisions for the City's share of the region's affordable.housing:need. www.metrocouncll.org 390 Robert Street North • St.Paul,MN 5510 1-1805 • (651)602-1000 • Fax(651)602-1550 • TTY(651)291-0904 An Equal Opportunity Employer Mr.Eric Zweber July 9,2013 • page 2 Regional Parks:The UMore Park area is located near two planned regional parks system facilities,both of which are acknowledged in the AUAR: The planned Whitetail Woods Regional Park is located immediately south of UMore Park,and the planned Vermillion Highlands Greenway Regional Trail traverses the UMore Park site. The Metropolitan Council approved the alignment of the Vermillion Highlands Greenway Regional Trail in November 2012 as part of Dakota County's master plan for the regional trail. All of the development scenarios in the AUAR include an open space greenway to accommodate the regional trail,which will connect Lebanon Hills Regional Park to Whitetail Woods Regional Park. Council staff encourages the University of Minnesota,the City of Rosemount and Empire Township to work with Dakota County to facilitate development of the regional trail. • • Item 13—Water Supply -$�• •-Water supplyfis a-critical factor/i>Y futtire-growthiplanning: The'Council has significant concerns about the expansion of groundwater use in the UMore Park AUAR area in Dakota County. Council research of long-term ground water use indicates considerable decline in available groundwater in the UMore Park area.This is modeled to in the year 2030. The proposed development of UMore Park and continued reliance on groundwater sources puts pressure on existing aquifer supplies. In 2013,the Council has been working with communities around the region generally and specifically with engineers from cities in Dakota County to address the greater water supply issue. The City and Township should continue to work with Council Staff as groundwater modeling is refined and alternate sources for water supply are explored. Council research reveals moderate and high potential recharge to the aquifer;future development should - • t include the-latest infiltration across`all Item 17—Water Quality—Surface Water Runoff The National Weather Service's Hydrometeorological Design Studies Center recently released new precipitation frequency estimates for many of the Midwestern states,including Minnesota,in a publication termed the NOAA Atlas 14 Point Precipitation Frequency Estimates. (See http://www.dnr.state.mn.usklimate/noaa_atlas 14.html and http://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html?bkmrk=mn) The new estimates result in generally higher projected rainfall events for the average 50-and 100-year recurrence intervals. The AUAR does not indicate what amount of rainfall was utilized for the 100-year event,but the new Atlas 14 precipitation frequency data estimates indicate that future 100-year rainfall recurrence interval events should now be estimated to be approximately 7.4". These new data should be utilized in the calculation of runoff to properly size the proposed project's stormwater conveyance, treatment,and infiltration facilities. • Mr.Eric Zweber July 9, 2013 page 3 Item 18—Wastewater The AUAR redefines the individual sanitary sewer districts within the project area from those previously identified in the City's 2008 Comprehensive Plan Update.The AUAR currently calls for the area to be served through four(4)primary districts—the East District,Central District,Northwest District,and the Southwest District—with each having its own separate connection to the regional wastewater system.The regional interceptor system that provides service to this area of the City was designed and constructed with specific capacities.During its review of the City's 2008 Update,the Council met with the City to discuss the system capacity within the regional system and the City committed to finalizing a wastewater plan that would be consistent with the assigned capacities of the regional system. The service area map included in the AUAR shows larger areas being served through the upstream portion of the regional system where system capacity is less.This represents a potential system impact if long term flows from these areas exceed system capacity.That portion of the gravity interceptor downstream of L75(Biscayne Avenue)has sufficient capacity to serve the City including the AUAR project area. ....x ac'.ayy.. ...�.C":.:,,, 'a;�•:•.:� :.:' .?w :;.:,ti,.-v.vy,�•- .°"•k' :;''�*e.. "y11a-; ti°a;ea:> �;;... x - `.f,n _.. ;N.. .. ! .. The City will need to update its Comprehensive Plan,including its Tier II Comprehensive Sewer Plan, prior to the installation of any sanitary sewer improvements within the AUAR project area.The approved Tier II Comprehensive Sewer Plan will need to reflect that long term cumulative wastewater projections from each service district connection point is consistent with the assigned regional capacity.This will more than likely require that portions of the East,Central,and Northwest service district be directed west - toward that portion of the system within Biscayne Avenue. Item 21-Traffic Forecasts and Transportation Mitigation The use of ITE trip generation rates for calculating traffic impacts for a development this large is inappropriate. The unreasonably high nature of trip generation estimates calls into question the expansion needs identified in the AUAR which include expanding CSAH 42 from four-lanes to six, etsnst=rticting'an interchange to-replace the existing TH 3'/CSAH 42 intersection and reconstructing the • ex:shhg interchange at CSAH 42 and US 52. It should also be noted that CSAH 42 and CSAH 52 are principal arterials and hence part of the metropolitan highway system. The 2030 regional Transportation Policy Plan does not include any of the described improvements to these metropolitan highways. Construction or reconstruction of the interchanges and expansion of CR 42 would need controlled access approval from the Metropolitan Council.The city of Rosemount should continue to coordinate with MnDOT and the Metropolitan Council regarding any proposed changes to the metropolitan highway system. Item 27—Compatibility with Plans and Land Use Regulations: The Metropolitan Council is drafting a new framework,Thrive MSP 2040 and is expected to adopt this plan in 2014. Currently,the 2030 Regional Development Framework does not recognize development consistent with Scenarios 1,2 and 3 in the-AUAR.The City of Rosemount and Empire Township will need to partner with the Council to identify potential community and regional infrastructure improvements and timeframes necessary to accommodate the UMore development scenarios as identified. • Among the development Scenarios detailed in the AUAR,when particular land uses are finalized,the Council expects both the City and the Township to amend their respective comprehensive plans. • Mr.Eric Zweber July 9,2013 page 4 • The Council will take no formal action on the AUAR. If you have any questions or need further • information,please contact Patrick Boylan,Principal Reviewer,at 651-602-1438. Sincerely, , .s LisaBeth Barajas,Maciager Local Planning Assistance cc: Julie Monson,MIFA Tod Sherman,Development Reviews Coordinator,MnDOT-Metro Division Wendy Wulff,Metropolitan Council District 16 PatrickBoylan,Principal Reviewer , ,. � .. c:4b. A ;:�` . .�., lt'f.'1:" 4- Raya Esmaeili,Reviews Coordinator N:ICommDevILPAICommunitieslRosemountlLetterslRosemount 2013 AUAR 21138-1 UMore Park.docx • • 1' • Minnesota Pollution Control Agency 520 Lafayette Road North I St.Paul,Minnesota 55155-4194 1 651-296-6300 800-657-3864 1 651-282-5332 TTY I www.pcastate.mn.us I Equal Opportunity Employer • July 10,2013 • . Mr.Eric Zweber Senior Planner . • City of Rosemount 2875 145th Street West Rosemount,MN 55068 • Re: UMore Study Area Draft Alternative Urban Areawide Review • Dear Mr.Zweber: • Thank you for the opportunity to review and comment on the Draft Alternative Urban Areawide Review (Draft AUAR)for the UMore Study Area project(Project) located in the city of Rosemount,Minnesota. • •v •.;,•The^Project consists of a 4,900 acre`rnixed use development: Regarding matters for which'the.Minnesota-'-' Pollution Control Agency(MPCA)has regulatory responsibility and other interests,the MPCA staff has the following comments for your consideration. Water Quality—Surface Water Runoff(Item 17) • The Draft AUAR states that stormwater management for the new development will utilize regional ponds constructed to"NURP Standards"as a pre-treatment method prior to discharge into area water bodies.It is important to note that the MPCA does not recognize these standards as comparable to meeting the requirements for wet sedimentation basins as described in the National . • Pollutant Discharge Elimination System/State Disposal System (NPDES/SDS)General Construction Stormwater Permit that will be required for the site.Construction of permanent wet sedimentation -_. basins and regional-ponds-to treat stormwaterrunoff from new impervious surfaces will,at a i,acietic•at1rl,' • •....• ..minimum;need to'meet all the requirements outlined in Part III.C:1:of the permit and incorporate any revisions to this part as a result of upcoming changes to the 2013 permit. • • The MPCA encourages the use of infiltration of stormwater,where possible,as a method of permanent stormwater management.The design of the infiltration systems must also meet all requirements identified in Part III.C.2.of the NPDES/SDS Construction Stormwater Permit. • The MPCA encourages the city and county to consider incorporating Minimal Impact Design • Standard(MIDS)practices into its plan to retain stormwater on the site and minimize discharges to • area surface waters.More information can be found at htto://www.pca.state.mn.us/veiza8e. • The Draft AUAR identifies the presence of numerous land-locked depressions and wetlands on the site that may be utilized as part of the stormwater management system.However,it should be noted that the NPDES/SDS prohibits adverse stormwater impacts(including permanent Inundation, flooding,degradation of water quality,filling,etc.)to natural wetlands(of any classification)unless • the impacts have been addressed through permits or other approvals as described in Appendix A, • Part D of the Permit. • • • Mr.Eric Zweber Page 2 • July 10,2013 • The Draft AUAR states the site does not discharge to impaired waters,but does not identify whether . the site will discharge to any special waters within one mile of the site.If the site will discharge to special waters,permanent treatment volumes will double for the site.For questions regarding stormwater issues,please contact Roberta Getman at 507-206-2629. • We appreciate the opportunity to review this project. Please be aware that this letter does not .constitute approval by the MPCA of any or all elements of the Project for the purpose of pending or future permit action(s)by the MPCA.Ultimately,it is the responsibility of the Project proposer to secure any required permits and to comply with any requisite permit conditions.If you have any questions concerning our review of this Draft AUAR please contact me at 651-757-2508. Sincerely, • • • • Karen Kromar '1 'thee- ..ri ipaF : ..,, .,.... . Y OMJY 11W' ., Environmental Review Unit Resource Management and Assistance Division KK:bt cc: Craig Affeldt,MPCA,St.Paul . Doug Wetzstein,MPCA,St.Paul Roberta Getman,MPCA,St.Paul • • • • • • •.. •;.1 :r., 7 ,...,.:Cec. .:�:.:r,. ,f. naS,:pniidprrf, '......,uq.... . .... .. • - .. ... I ' From: 7wehfr.Eric. To: Andi Moffatt;Hanson.Kathie Subject: FW:UMORE Draft AUAR-DNR Comments Date: Thursday,July 11,2013 9:55:45 AM Comment from the DNR. Kathie, Now that we received the comments from the DNR,can you e-mail all the comments that we received to all of the PMT members. Thanks, Eric Zweber,Senior Planner City of Rosemount,2875 145th Street, Rosemount, MN 55068 Ph.651-322-2052/http://www.ci.rosemount.mn.ILc SM . From: Doperalski, Melissa (DNR) [mailto:melissa.doperalski @state.mn.us] Sent:Thursday,July 11, 2013 9:50 AM To: Zweber, Eric Cc: Haworth, Brooke(DNR); Joyal, Lisa (DNR) Subject: Re: UMORE Draft AUAR- DNR Comments Mr.Zweber, The Department of Natural Resources(DNR)has reviewed the Draft Alternative Urban Areawide. Review(AUAR)fdi'the UMORE Study Area located in the City of Rosemount,Dakota County.We offer the following comments for your consideration. The DNR has had the opportunity to participate in discussions and pre-publication reviews for this document.Early coordination opportunities are appreciated as they help to identify issues/concerns early in the process and allow for considerations early in planning.The DNR encourages the City to continue communications with the DNR through the development stages of this project. In addition to scheduled AUAR updates,the DNR recommends that the Natural Heritage Information System(NHIS) Database be re-evaluated during major construction events.Regarding NHIS reviews, the DNR considers report queries valid for one year.New records are constantly being updated into the system. In the event that a new rare feature(s)or state-listed species are located on or in the vicinity of the project area, avoidance or mitigation measures may need to be considered. As identified in the Draft AUAR,the Vermillion Highlands Research Recreation and Wildlife Management Area is located south adjacent to the study area.The DNR appreciates the consideration of this resource in planning scenarios and encourages the City to continue discussions with the DNR as more definitive site plans are developed. The DNR encourages that project developers consider use wildlife-friendly erosion control mesh where erosion control mesh is needed.Traditional erosion control mesh has been found to be detrimental as wildlife can become entangled leading to injury or death.A flyer is attached for your reference. Please note that additional information may be requested or required when DNR water appropriation permit applications are submitted for the construction of a new well.A 2013 statutory change requires that all new well construction receive pre-approval from the DNR prior to construction of the well.The statutory changes is to help well owners to make informed decision by providing relevant information prior to their financial investment in equipment and well construction. Please contact the DNR Area Hydrologist for more information on the applicability of this statutory change to your project. The DNR is supportive of and appreciates all wildlife and rare features considerations and commitments as presented in the Draft AUAR. Thank you, Melissa Melissa Doperalski Regional Environmental Assessment Ecologist Department of Natural Resources, Central Region 1200 Warner Road Saint Paul, Minnesota 55106 651.259.5738 melissa.doperalski@state.mn.us • • Comments on City of Rosemount Draft AUAR UMore Study Area Comments on City of Rosemount Draft AUAR UMore Study Area by Ronald C. Spong p. 17: 8.) Permits and Approvals,Table 8-1. Dakota County requires permits, licenses and/or approvals for compliance with its ordinances(e.g., solid waste, hazardous waste, subsurface sewage treatment,wells and water supplies). p. 18: 9.A.)Existing Land Uses. Although past and present land uses in UMore Park are briefly discussed elsewhere in the Draft AUAR,the University of Minnesota must make a full and complete disclosure of all past and present land uses whether by the University itself, its former and current tenants or by others(e.g., federal government and military and State of Minnesota agencies). Property transactions implicit with this proposed development, as well as those that have already occurred (e.g.,Vermillion Highlands,City of Rosemount and Dakota County Technical College), require veracity, due diligence to protect potential buyers from incurring environmental liabilities that are known or should be known (e.g.,contaminant releases and asbestos). p. 20-31: 9.E.)Superfund Site Status, and 9.F.) Potential Environmental Hazards.This respondent has been associated with many aspects of the investigations, remedial efforts and variable outcomes surrounding the former Gopher Ordnance Works(FGOW), Rosemount Research Center and Agricultural Experiment Station citizen complaints and discoveries of solid and hazardous waste disposals and contaminant releases were made in 1984.The Draft AUAR excludes a much larger body of work conducted from 1984 through 2000,which should be included to provide the necessary context for a public review of this import.Through its Site Assessment and Remediation Program, Dakota County has documented more than a hundred FGOW and UMore Park disposal and release sites that have not been satisfactorily resolved. Despite evidence to the contrary, the State and federal Superfund site activities excluded the . FGOW choosing instead to focus on a few of the many disposals and contaminant releases at UMore Park(e.g.,the University's hazardous waste burn pits,Georges Used Equipment, Porter Electric and US Transformer). In 2002, a preliminary investigation of the FGOW was conducted jointly by the University, MPCA and Dakota County, and its significant findings(2003)were presented to the US Army Corps of Engineers(USACE),which manages the congressionally funded DERP for formerly used defense sites(FUDS) like the FGOW.The USACE conducted a preliminary assessment and concluded that the University was a"responsible party"with others, which has since led to administrative and legal wrangling but no remedial actions, exposure mitigation or cleanups. The MPCA is charged with enforcing MERLA,whether it proceeds cooperatively with USACE under DERP to address the FGOW and/or requires the University of Minnesota,as a responsible party,to follow through with Superfund actions.What appeared to be significant causes for both DERP and Superfund actions several years ago have become sidetracked by the University's push for developing a residential and business community and aggregate mining at UMore Park. Economic and commercial interests have overtaken the environmental Submitted by Ronald C.Spong 10 July 2013 Page 1 • Comments on City of Rosemount Draft AUAR UMore Study Area concerns, and the leaders of State and local governments,who are charged with protecting public health and safety, must decide who they represent. Suffice it to say that this section of the Draft AUAR needs significant revision if it is to properly and fully inform the public and its decision makers on this important and long reaching development plan. Seventy-one years of land use and unfortunate abuse must be addressed here before a secure and healthy future can be realized. p. 39-50: 13.A.)Water Use. Existing Conditions. More than 80 farms were seized and purchased in 1942 for the construction of the FGOW, and only a few were retained and used. All unused, abandoned wells should be found and properly sealed in accordance with State Rules and Dakota County Ordinance 114. Because the majority of these wells are shallow,they may connect with a contaminated aquifer. Ordinance 114 requires that such wells be tested for contaminants and remediated if necessary before they are sealed. The Jordan sandstone,the primary aquifer utilized by the City of Rosemount for its public water supply, is susceptible to contamination because of its interconnection with the overlying fractured and solution-weathered dolostones of the Prairie du Chien Group(Shakopee and '' Oneota formations). In the vicinity of UMore Park,the Jordan'sandstone aquifer iS notably - •- • contaminated with elevated nitrate-nitrogen,and the two eastern wells of Rosemount's water supply are impacted. While the origins of oxidized nitrogen to the Jordan aquifer have been attributed largely to agriculture and somewhat less significantly to sewage(i.e.,failed and malfunctioning residential and commercial sewage treatment systems), a third source has not been considered.The FGOW's disposals and releases of ammonia, nitroamines and nitrotoluenes are known to have entered the unsaturated (vadose)zone above the water table and over time degraded and oxidized eventually recharging the shallow and deeper aquifers. Groundwater monitoring for residual nitroamines and nitrotoluenes,especially 2,4-DNT and 2,8-DNT that were used in • ,smokeless gunpowder production, beneath and east of UMore Park should be conducted to determine if their residuals are still extant. Although a specific bedrock geology map of the Coates Quadrangle(topographic map) has not been published,the adjacent quadrangles(Vermillion, Hastings and St. Paul Park) are available. Interpreting the bedrock geology from available well logs confirm the probable structural displacements(block faulting,folds,etc.)that continue southwestward into the Coates Quadrangle and define the southern limits of the Twin Cities Basin.Those structures likely underlie the east and south portions of UMore Park. As a result of this and the presence of covered and possibly buried karsts on-site, as well as to the east and north of UMore Park,the City of Rosemount's DWSMA should be revised utilizing the Minnesota Department of Health Source Water Protection guidance for wellhead protection delineation for fractured and solution- weathered bedrock hydraulically connected to a'bedrock aquifer(i.e., Prairie du Chien-Jordan aquifer). i Submitted by Ronald C.Spong 10 July 2013 Page 2 Comments on City of Rosemount Draft AUAR UMore Study Area The future dependency on the Jordan aquifer to serve the burgeoning population of Rosemount and the proposed UMore Park development is predicated on locating future public wells away from the more vulnerable groundwater aquifer under and near UMore Park.Therefore, any scenario that would include a public well sited within UMore Park should be dismissed unless testing and treatment for contaminants of concern are provided. p. 58: 17.D.)Water Quality—Surface Water Runoff.Water Quantity and Quality Mitigation Plan. Any proposed plan or scenario that would divert storm water and other surface water discharges (e.g., NPDES-permitted discharges)to the aggregate mining lake(Lake 2162)should be dismissed. Because Lake 2162 will be located in a critical aquifer recharge area, any contaminants entering the lake will eventually impact the Jordan aquifer.Therefore, it is also critical that contingency plans be in place and enforced should spills,willful disposals and accidental releases occur that would jeopardize the water quality of the lake. p. 70: 19.B.)Geologic Hazards and Soil Conditions. The Rich Valley Karst, a soil-mantled, covered karst, is located within a mile north and northeast of UMore Park. It is a karst dry valley in which no surface water flows as it is immediately intercepted by soil subsidence dolines (sinkholes).Anecdotal evidence of fractured and solution-weathered conduits in the underlying u.. Prairiedu Chien'Group's dolostories and sandstone(Shakopee andOneota formations)was provided to this respondent by area well drillers, as well as comments on drillers' logs. Portions of UMore Park and adjacent lands to the east suggest that some of the closed depressions attributed to a pitted glacial outwash plain(Rosemount outwash) may have enlarged and deepened in response to the piping(hydraulic tunneling) of fine sediments into underlying fractured and solution-weathered dolostone(Prairie du Chien Group)and similar piped voids in the residual superjacent St. Peter sandstone. Because of an extensive early Ordovician Period(Paleozoic) erosion interval after the deposition of the Prairie du Chien Group, as well as recurrent structural displacements, some of the Shakopee formation is • missing in the area of eastern Rosemount, UMore Park and the City of Coates.-It is likely that „..... . . • • this was a paleokarst, in which the partially solution-weathered and missing Shakopee formation ... was subsequently buried by the deposition of the St. Peter sandstone. Subsequent depositional, weathering and glacial/interglacial events evolved into the current landscape where the karstification process is continuing subaerially. The very deep closed depressions in UMore Park and farther east suggest that the rapid infiltration of surface water is being enhanced by the rejuvenation of both the covered and buried karsts. p. 107:27.)Compatibility with Plans and Land Use Regulations. Based upon the comments above, Scenario 4(status quo)would be the safest option for Rosemount and Empire Township until the University of Minnesota has complied with federal, State and County regulations regarding known and suspected solid and hazardous waste disposals, contaminant releases, and environmentally impacted air, land and water and mitigated their human and ecological exposures. Submitted by Ronald C.Spong 10 July 2013 Page 3 From: Zweber,Eric To: gndl Moffatt;Jianson.Kathisi Subject: FW:UMORE park development plan Date: Thursday,July 11,2013 8:39:18 AM A resident comment on the AUAR. From: MarthaH605 @aol.com [mailto:MarthaH605 @ aol.com] Sent:Thursday,July 11, 2013 12:03 AM To:Zweber, Eric Subject: UMORE park development plan Hello. I hope I am squeaking in under the wire of the comment deadline, since I heard it was July 10 and it's still July 10 as I write. Regarding the development plan for UMORE park,my comment is to not do it. Instead, get Prairie Restorations in there to restore the native prairie and plants. Have trails, picnic tables, a visitors center. That land should stay as it is,with minimal intervention. There are so many reasons why this land should not be built on. I will mention only a few here. 1.'I'noti 'ed inyour"developmentplah'Ahat`you've designated land way down in Enipite Township to •• '' stay as it is with no buildings. But why should people have to drive that far to be able to walk in a quiet, green space? We're already so crowded with concrete, houses, stores, and roads. We don't need more of those;there are a million stores everywhere and a million houses, and millions of acres of concrete. What we do not have much of--and it's disappearing all the time--is land that is left to itself, land where one can go and listen to the quiet; land where one can see and feel and hear beauty. There's no way to put a price tag on such a place, and there are fewer and fewer of these as time goes by. What is one more ugly, stupid Target or WalMart or whatever-clothing-store-you-can- think-of, compared to the beauty of a prairie vista with bird song and the wind blowing in the grass? Richard Louv, author of Last Child in the Woods, mentions research that finds that direct exposure to nature is essential for healthy childhood development and for the physical and emotional health of ,.: ; :, •.;:.children'and.adults. Having natural spaces easily accessible and surrounding•us is riot a-luxury. We, ., ....,.. 013,r::.,,ae,., need it...:We.are-partmf_the•earth and.need contact with it. People-should-have access:to.natural...... spaces close by and not have to drive to get there. The idea to maintain 4000 acres of natural space in Vermillion is good, but not enough because it removes natural space from the city of Rosemount. I mean natural space: not manicured parks. One does not get the same benefit from a park full of mowed Kentucky bluegrass that one gets from a wide expanse of forest, prairie, or oak savannah. 2. The city calls it"open space," but let us not forget that we are not the only living things on this planet. Animals and plants are already living in that space where you plan to build. Where is your concern for them? Where are they supposed to go when you bulldoze their homes, kill the trees and plants and probably kill some of the animals, too? We squeeze animals into smaller and smaller spaces, and then complain when they have nowhere to go, nothing to eat(because we bulldozed their food and turned it into mowed lawns) and come in our yards. We may not realize it, but we depend on those animals and plants for our survival.They are all part of a web that keeps us alive. Stress the web too much, take too much away,and we will be in big trouble. We should be trying to preserve every possible inch,of natural land, rather than planning what stores or houses we want to put on it. It's incredibly selfish to take homes away from animals, and kill living things(trees, plants, and anything else that gets in our way)just so we don't have to drive outside the city limit to get to a clothing store. 3. All those plants in that green space help to make oxygen. Take 5000 acres of that away, and it adds proportionally to global warming. 4. Eagan has managed to maintain a swath of green space, much of it natural, for several miles, running down the middle of the city. Why can't you do that? Do you really want to become another Apple Valley, with nothing but ugliness from one end to the other? Stores, roads, houses, acres of concrete and thousands of cars a day going through there? It's urban sprawl, and it's UGLY. Don't add to it. Keep Rosemount from turning into yet another community that succumbed to the siren call of urban sprawl: Keep Rosemount beautiful. 5. Take the long view. Do you think that whatever stores you build in that space will still be there in 100 years? They won't. But the land, if you leave it natural,will be there for much longer--especially if it's formally protected by the state or the Nature Conservancy. Once the land is built on, it's dead;the ecosystem is compromised or destroyed and it will never support life again. It's incredibly short-sighted to put in a store just because someone doesn't want to drive outside the city limits, if you also lose the ecosystem that's there and the inestimable value of that natural space. If you build there, it will be a tragedy and a cause for mourning, not a cause for celebration. The happiest days of my life have been spent in natural spaces. There aren't many left. Don't add to the destruction. Leave spaces for people to breathe, and be, and get away from the madding crowd. And leave space for the animals, too, because we aren't the only living things on this planet. I think my view will be unpopular with city planners,who are conditioned to think, "What can we put . _ here;',when given the opportunity to..build. And the lure of AIL those extra taxes is hard to resist. But a • there are others who think as I do. Think of them, and think of the long-term future hundreds of years from now. Think of our descendants, and ask whether they will have any natural spaces left. Think of the animals and birds, and whether they will all be gone because of having nowhere to live. Think of the suffering it will cause them if.you bulldoze that land and put it all under concrete. On the day you build on that land--and for a long time afterward--the earth will cry, and so will I. Sincerely, Martha Henderson _F . .., .■ From: 7weher.Erlr, To: And'Moffatt; Cc: Jianson.KathIc Subject: FW:South Gateway Redevelopment Committee Date: Tuesday,July 09,2013 12:43:41 PM Andi, The e-mail below is mostly about an unrelated subject, but directly below the school district states that they have no official comment about the AUAR. Do you have any thought on how we should not that? Eric Zweber, Senior Planner City of Rosemount,2875 145th Street, Rosemount,MN 55068 Ph.651-322-2052/Jittp://www.ci.rocemount.mn.u� t r OS OUt T From: Solomon,Jeff[mailto:Jeff.Solomon @district196.org] Sent:Tuesday,July 09, 2013 11:55 AM To: Zweber, Eric Cc: Cason, Kathy Subject: RE: South Gateway Redevelopment Committee Eric, We will be sending some additional background information on Randy before end of day today. The district has no official comments in regard to the AUAR. Thank you for the opportunity to review and the follow-up. �. . Jeffrey M. Solomon Rosemount-Apple Valley-Eagan Public Schools Director of Finance and Operations 3455153rd Street West Rosemount, MN 55068 651-423-7713 From: Zweber, Eric[mailto:eric.zweberAci.rosemount.mn.us] Sent:Tuesday,July 09, 2013 8:56 AM To: Solomon,Jeff Cc: Berenz,Jane; Dukek, Randy; Lindquist, Kim Subject: RE: South Gateway Redevelopment Committee eff, It sounds like Mr. Dukek would be a good fit for the committee. Can I get a little background on Mr. Dukek to give to the City Council? Just basic stuff like how long Mr. Dukek has worked for the school