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Home My WebLink About6.o. Receive Feasibility Report, Business Park, Phase 2 Street & Utility Improvements, City Project #308 CITY OF ROSEMOUNT EXECUTIVE SUMMARY FOR ACTION CITY COUNCIL MEETING DATE: June 1, 1999 AGENDA ITEM: Receive Feasibility Report - Business Park, AGENDA SECTION: Phase 2 Street & Utility Improvements, City Project #308 Consent PREPARED BY: Bud Osmundson AGENDA�� City Engineer/Public Works Director ATTACHMENTS: Executive Summary from Feasibility APPROVED BY: Report, Resolution, Drawin On March 2, 1999 the City Council, upon the recommendation by the Port Authority, initiated the preparation of a preliminary report to investigate the feasibility of the construction of street and utilities in the second phase of the Rosemount Business Park. Attached is a copy of the Feasibility Report Executive Summary and a drawing of the proposed project. The proposed improvements include the extension of street and utility improvements on Boulder Trail from its present terminus easterly to Biscayne Avenue and the construction of street and utility improvements to Biscayne Avenue from Boulder Trail to CSAH 42. As part of the project, upon the recommendation of the Utility Commission and the City Engineer, watermain is to be extended from Boulder Avenue to 160th Street West to close off a dead-end line. The total estimated project cost is S 1,710,000 all of which is assessable to adjacent properties. $1 .49 million is attributable to street and utility improvements on Boulder Trail and Biscayne Avenue. The remaining 5220,000 is attributable to watermain improvements south of the Phase Two project. Normally the next phase of the project would be to order a public hearing to consider the improvements. However as of the writing of this summary it is unknown whether the Port Authority wants to continue with the project at this time. If the Port Authority does not want to move forward it will be Staffs recommendation that the watermain improvements be installed due to a request at the southerly end of the project site and to close off the aforementioned dead-end main. Therefore some action will take place at the next City Council meeting. The funding for the project is fairly straight forward except that the University of Minnesota Rosemount Research Center is involved and assessments against their property may or may not be paid. The assessments for the watermain south of the Business Park may also be carried by the Water Core Fund due to expected Green Acre Assessment Abatements for the agricultural properties along this length and also due to the University of Minnesota's legal rights. Staff recommends that the Council receive the Feasibility Report at this time and Staff will come back to the next meeting with the appropriate next step if all or part of the project moves forward. RECOMMENDED ACTION: MOTION TO ADOPT A RESOLUTION RECEIVING THE FEASIBILITY REPORT FOR THE ROSEMOUNT BUSINESS PARK PHASE 2 STREET AND UTILITY IMPROVEMENTS, CITY PROJECT #308. COUNCIL ACTION: 6 CITY OF ROSEMOUNT DAKOTA COUNTY, MINNESOTA RESOLUTION 1999 - A RESOLUTION RECEIVING THE FEASIBILITY REPORT FOR THE ROSEMOUNT BUSINESS PARK PHASE 2 STREET AND UTILITY IMPROVEMENTS CITY PROJECT #308 WHEREAS, the City Council deemed it necessary and expedient that the City of Rosemount, Minnesota, investigate the feasibility of certain improvements, to-wit: City Project #308, Rosemount Business Park Phase 2 Street & Utility Improvements, in the City as described in and in accordance with the feasibility report prepared by Short-Elliott-Hendrickson,Inc.; and WHEREAS, the City Council has been advised by the City Engineer that said street and utility improvements, City Project #308 is feasible, and should best be made as proposed, and the City Engineer's report to this effect has heretofore been received by Council, and filed with the City Clerk on June 1 , 1999; and NOW THEREFORE BE IT RESOLVED, the City Council of the City of Rosemount accepts the feasibility report for City Project #308 and places it on file. ADOPTED this 1 st day of June, 1999 Cathy Busho, Mayor ATTEST: Susan M. Walsh, City Clerk Motion by: Seconded by: Voted in favor: Voted against: June 1, 1999 Preliminary Report Rosemount Business Park - Phase II Street and Utility Improvements Rosemount, Minnesota - Executive Summary City Project No. 308 provides for the construction of sanitary sewer, water main,storm drain,street and site grading improvements in Phase II of the Rosemount Business Park. Phase II of the Business Park is located east of Business Parkway,south of CSAH 42 and west of Biscayne Avenue. Phase II is located . immediately east of Phase I of the Business Park. The project includes approximately 3,400 linear feet of sanitary sewer, 7,800 linear feet of water main, 3,700 lineaz feet of storm drain, 60,000 cubic yards of excavation, and 3,1001inear feet of street construction. The total estimated project cost is $1,710,000, all of which is assessable to adj acent properties. Of this amount,$1,490,000 is attributable to street and utility improvements on Boulder Trail and Biscayne Avenue. The remaining $220,000 is attributable to water main improvements on Biscayne Avenue between Boulder Trail and 160`�Street. Spreading the $1,490,000 cost for street improvements over the total length of streets (5,900 feet) yields an approximate assessment rate of $253 per front foot. Spreading the$220,000 cost for water main improvements over the total length of Biscayne Avenue between Boulder Trail and 160`� Street (6,600 feet) yields an approximate assessment rate of$33.33 per front foot. ' A-ROSEM9905.00 Page 1 This improvement is necessary to provide the subject property with . ' municipal utilities and street access.In addition,the improvement is cost- effective and feasible from an engineering standpoint. Due to the size of the project and the nature of the construction,this project would best be bid and constructed as an individual project rather than combining the project with any other work. Project construction is scheduled to begin in September 1999, with substantial completion scheduled for spring of 2000. Final completion (bituminous wear course) is scheduled for fall of 2000. A-ROSEM9905.00 Rosemount Business Park-Phase II Street and Utility Improvements Page 2 Rosemount,Minnesota �,.i PROJECT LOCATION Q w �---� � U�f��` � ;, � � ;, m a :. ;,� � CSAH N0. 42 j: - � -` I . ;� / ; J i / TR/11L � fi ' � EASEIAENTS j� ; � i Q OING /� ! '�r � AREA (/)' j. 41 fr�, ' � 2 / f' �' !! �/ O: r� E m % J ;' I E � : i } I ff f :.;{: . F 1 I,�' r� ! - -... ----.._... ---....._.._. ---........_-- ---J-m --......;_.. - _.. ..._._. .... . ......................................... .................... . ,�Q ; 'BOULDER..TRAIL a ;`��Q ! I /I: wEn.u+o� � ��;�' ;f:� i ,l;�Q- i i J<< f 1%Q• �1 r;;;V. _�;> `�\ f•'f` � �: � �_�....._� ____'_ ...._-_._..... i:_y.- ... __._..._1_ __.__.. .... � -� ..__._.._. � PROPOSED WATER MAIN -�fr' � �- WACHTER %%� i 0;" . � LAKE /;'% f' ;'`i I '� I;'/ � i !�f' � W I , ; f �, _ ---------.. .— — — - ----..—_...----... / , __......._...__ _— /' . .__...........----;. -- — --.._... ___ __ ? :`'' j a J / i w I 1 Z ii � , _ } 1�' ' ! U j j1� ! m ;;1 ( ,� ;" r- % � ;: ,% � 'f ' ' 160TH ST. W. ,' 1� f � N 0 � x s 0 � � � � NO SCALE 3 � O ARO EM so.00 LOCATION MAP 1 -�� ROSEMOUNT BUSII�SS PARK, PHASE 2 � PHONE: (651) 490-2000 DATE: 8 a ST3P UID. MN SSN oR DR. 6_1_99 qTy pROJECT NO. 308 ii � 1 Biscayne Pointe - Phase il Street and Utility Improvements � i � � Preliminary Report �� City of Rosemount Minnesota � � City Project No. 309 SEH No. A-ROSEM9904.00 � June 1 , 1999 � , � � ' � =SEN 1 1 � � Biscayne Pointe - Phase II Street and Utility Improvements � , Preliminary Report � City of Rosemount Minnesota � City Project No. 309 SEH No. A-ROSEM9904.00 � June 1 , 1999 � � � � I hereby certify that this preliminary report was prepared by me or under my � direct supervision, and that I am a duly Registered Professional Engineer under the laws of the Sta Minnesota. . � . � ' � Date: June 1, 1999 Reg. No. 19699 Reviewed By: � � /�� 06/O1/99 � Date � � �, Short Elliott Hendrickson Inc. 3535 Vadnais Center Drive � 200 SEH Center � St. Paul, Minnesota 55110 (612) 490-2000 � � 1 � . � �� ' �� - 3535 VADNAIS CENTER DRIVE,200 SEH CENTER,ST.PAUL,MN 55110 612 490-2000 800 325-2055 - ARCHITECTURE • ENGINEER/NG • ENVIRONMENTAL • TRANSPORTATION � � � June 1, 1999 RE: Rosemount, Minnesota Biscayne Pointe - Phase II � Street and Utility Improvements City Project No. 309 SEH No. A-ROSEM9904.00 � � Mr. Bud Osmundson City Engineer/Public Works Director City of Rosemount � �875 145`h Street West Rosemount, MN 55068 � Dear Bud: � In accordance with your authorization, we have prepared the attached preliminary report for street and utility improvements in Phase II of the Biscayne Pointe development. This report discusses sanitary sewer, water main, storm drain and street improvements, and provides cost estimates for � each. We find this improvement to be feasible and recommend that it be constructed in general compliance � with the provisions of this report. We would be pleased to review this report with you in detail. � Sin ely, � • i � avid F. Simons, P.E. '� wrc f:\pru Kcls\rs\ruscm\9 N W\r\biscayn'_.wpJ � � SHORT ELLIOTT HENDRICKSON INC. M/NNEAPOLIS,MN ST CLOUD,MN CHIPPEWA FALLS, W/ MADISON, WI LAKE COUNTY,IN � EQUAL OPPORTUNITYEMPLOYER � � � � � � � � � M � � � � � � � � � � � Table of Contents � Certification Page Letter of Transmittal Table of Contents �` Page � Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 �, 1.1 Authorization 2 1.2 Scope 2 1.3 Data Available 2 � 2.0 GeneralBackground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2.1 Location 2 � 2.2 Site Conditions 3 3.0 Proposed Improvements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 � 3.1 Sanitary Sewer 3 � 3.2 Water Main 4 3.3 Storm Drainage 4 � 3.4 Street Construction 5 3.5 Site Grading 6 3.6 Easements 6 � 3.7 Permits 7 � 4.0 Financing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 Cost Estimates 7 4.2 Assessment Area g � 4.3 Cost Recovery � g 5.0 ProjectSchedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 ' � � � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 ' City of Rosemount, Minnesota Page i � � List of Tables � Page Tabie 1 � Easement Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2 � Permitting Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Table 3 Summary of Cost Estimates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 � Table 4 � AssessmentArea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 5 � CostRecovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 � List of Appendices � � Appendix A Detailed Cost Estimates � Appendix B Drawings � ' � � � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page ii � � � � � � � � � � � � l � � � � 1 � � �, June 1, 1999 � Preliminary Report � Biscayne Pointe - Phase II Street and Utility Improvements � City of Rosemount, Minnesota � Executive Summary � City Project No. 309 provides for the construction of sanitary sewer, water main, storm drain and street improvements for Phase II of the Biscayne Pointe development. Phase II of the Biscayne Pointe � development consists of approximately 28 acres which will be platted into 63 single-family residential lots. � The project is located in the NWl/a of Section 28, Township 115N, Range 19W north of the Union Pacific (U.P.) Railroad and east of Biscayne Avenue. Phase II of the Biscayne Point development is located � immediately east of Phase I. Phase I was constructed in 1998. The project includes approximately 2,2001inear feet of sanitary sewer, 3,6001inear feet of water main, 3,6001inear feet of storm drain, and 3,3001inear feet � of street construction. � The total estimated project cost is $1,123,000. Of this total, , approximately$1,009,000 is assessable to Phase II of the Biscayne Pointe development. Spreading the $1,009,000 over the 63 assessable lots in Phase II yields an approximate assessment rate of$16,016 per lot. The � remaining cost of approximately$114,000 will be recovered through City core funds ($72,000 from the Sewer Core Fund and $42,000 from the � Water Main Core Fund). This improvement is necessary to provide the subject property with � municipal utilities and street access. In addition, the improvement is cost- effective and feasible from an engineering standpoint. Due to the size of the project and the nature of the construction, this project would best be bid and constructed as an individual project rather than combining the �' project with any other work. � Project construction is scheduled to begin in August 1999, with substantial completion scheduled for fall of 1999. Final completion (bituminous wear course) is scheduled for spring of 2000. � A-ROSEM9904.00 � Page 1 � �, 1.0 Introduction 1.1 Authorization � On April 20, 1999, the City Council of the City of Rosemount, upon petition by the developer (Heritage Development), authorized the preparation of a preliminary report for construction of streets and utilities � in Phase II of the Biscayne Pointe development. This improvement has been designated as City Project No. 309. � 1.2 Scope The purpose of this report is to determine the engineering feasibility of � the project based on a review of the data available, and to make recommendations and provide cost estimates for the construction of sanitary sewer, water main, storm drain and street facilities. � 1.3 Data Available Information and materials used in the preparation of this report include: � • Prelimin Plat for Bisca ne Pointe Jul 1997 �' Y � Y ) � • Preliminary Grading Plan for Biscayne Pointe (July 1997) • City of Rosemount Construction Record Drawings • City of Rosemount Storm Water Management Plan (February 1998) � • Water Supply and Distribution Plan (September 1997) • City of Rosemount Assessment/Improvement Policy (March 1992) � • Improvement Policy for Public Infrastructure (July 1996) • Preliminary Report for Brockway Draw Trunk Sewer � (September 1997) • North Central Sanitary Sewer Study (March 1997) � 2.0 General Background 2.1 Location ' The project location is shown on Drawing No. 1. The project area is located in the NWl/a of Section 28, Township 115N, Range 19W. The project is located north of the U. P. Railroad and east of Biscayne � Avenue. Phase II is located immediately east of Phase I in the southeast part of the � larger Biscayne Pointe parcel. Phase II is approximately 28 acres in size and contains 63 single-family residential lots. Once all phases are fully � developed, the entire Biscayne Point development will encompass approximately 62 acres and 145 single-family residential lots. � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page 2 � � 2.2 Site Conditions The project area was formerly owned by Mr. Thomas L. Corrigan and is � currently being used for agricultural purposes. The first phase of the Biscayne Pointe development is located immediately to the west and the land to the south is occupied by the U.P. Railroad. South of the railroad � is the Bloomfield Addition development. Other existing developments near the site include the Dakota County � Maintenance Shop located at the southeast corner of the U.P. Railroad and Biscayne Avenue, and the Army National Guard Organizational Maintenance Shop located west of Biscayne Avenue. � A subsurface exploration report was prepared for the Bisca ne Pointe Y development. The soil borings showed topsoil and clay layers at the � surface ranging fr�m 0.5 feet to 6 feet in depth, with fine to medium grained sand beneath the topsoil and clay layers. Ground water was not encountered at the boring locations which terminated at a 15-foot depth. � 3.0 Proposed Improvements � 3.1 Sanitary Sewer Proposed sanitary sewer facilities are shown on Drawing No. 2. These � facilities include the installation of 8-inch sanitary sewer on Belmont Trail west of Belfast Street. A 15-inch sanitary sewer will be installed on � Belmont Trail northeast of the intersection with Birch Street West. Also, the existing 30-inch Brockway Draw trunk sanitary sewer will be extended along Belmont Trail and Birch Street West.The 15-inch and 30- � inch mains are sized to serve potential development to the north. There are existing sanitary sewer facilities on Belfast Street West and � Belmont Trail that were installed as part of the first phase of the Biscayne Pointe development. It was necessary to construct these facilities in 1998 to provide sanitary sewer service to Phase I of the development. These � existing facilities outside of the first phase were not constructed with service wyes because the exact location of lot lines were unknown. Therefore, the sanitary sewer services will be core drilled into the mains � during Phase II construction. The sanitary sewer connections to the 30- inch trunk main will also be core drilled. A portion of the costs for the 30-inch trunk main and the 15-inch trunk main will be recovered from � City core funds. The proposed sewer service facilities include the extension of 4-inch � sewer services 15 feet into each lot from the right-of-way line. In addition, a 4-inch sewer service will be extended into the proposed park � for possible future sanitation facilities. Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page 3 � � � � � � � i � � � i � r i � � �r � � , 3.2 Water Main Proposed water main facilities are shown on Drawing No. 3. These � facilities include the installation of 8-inch mains on all streets within Phase II of the development except for a portion of Belmont Trail where a 16-inch trunk main will be installed. The water main will be connected � to an existing 8-inch stub at the end of Belfast Street West in Phase I of the development. � The 16-inch trunk main will be extended north from an existing 16-inch trunk main in the Bloomfield Addition development through a subsurface crossing beneath the Union Pacific Railroad. The trunk main will then be � extended north between Lots 14 and 15 of Block 1 and northeast along Belmont Trail to the north boundary of the parcel. A portion of the costs for the 16-inch trunk main will be recovered from City core funds. In the � future, this trunk main will be extended west, north, and east from the north end of Belmont Trail to serve land that is currently undeveloped. � The proposed facilities also include hydrants for fire protection and the extension of one-inch services 15 feet into each lot from the right-of-way � line. In addition, a 6-inch service will be extended into the proposed park for possible future sanitation facilities and/or irrigation facilities. � U.S. Sprint owns a fiberoptic cable located along the north side of the U.P. Railroad right-of-way. Permits will be needed from U.S. Sprint and the U.P. Railroad to install the subsurface water crossing. � 3.3 Storm Drainage Proposed drainage facilities are shown on Drawing No. 4. The facilities � include a storm drain connection from Belmont Trail to the existing detention pond that was constructed in the first phase of the development. In addition,an overflow will be installed from the existing detention pond � to the U.P. Railroad right-of-way. This overflow will provide additional street drainage as well as control the high water level in the existing detention pond. � R ear yard catch basins and the associated storm drain piping will be � installed in the following locations to pick up rear yard drainage: between Lots 13 and 14 of Block 3, between Lots 8 and 9 of Block 1, between Lots 7 and 8 of Block 4, and along the west property line of the proposed � park. Emergency drainage overflows will be provided downstream of all rear yard catch basins and detention basins. � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page 4 � � � � � � � r � � � � � t � � � � � � � Catch basins will be installed at the curb line to collect storm water runoff from the street and adjacent areas. The catch basins will be installed with � sumps to collect sediment from the street prior to discharging into downstream conveyance systems. � The City of Rosemount Storm Water Management Plan shows that future trunk storm drains may convey flow from the northwest through the Biscayne Pointe development to the southeast. After reviewing the � topography in the area, it was determined to be more cost effective to convey storm water from detention basins 1687 and 1671 to detention basin 1716 via a future trunk to be constructed north of the Biscayne Pointe development at a later date. �' 3.4 Street Construction � The project includes the construction of standard City streets as shown on Drawing No. 5. The proposed streets are 32 feet wide between curb faces and are located within 60-foot of rights-of-way. There will be a 5-foot � wide concrete sidewalk installed on the south side of Belfast Street West and Belmont Trail and on the north side of Birch Street West. � The proposed street section consists of a 2-inch bituminous wearing course, a 2-inch bituminous base course, a 6-inch aggregate base course, ' and a modified "S"design (surmountable)concrete curb and gutter. This pavement section utilizes a granular subgrade which will be constructed in conjunction with the site grading. Site grading and all necessary soils � correction is to be accomplished by the developer. Fine grading, topsoiling, and sodding/seeding of the boulevard areas will be included in the City's contract. � Temporary cul-de-sacs will be constructed at both ends of Belmont Trail and at the west end of Birch Street West. The cul-de-sacs will have a � 45-foot radius. All street lighting facilities will be constructed, owned, and maintained � by Northern States Power (NSP). The street lights will be provided as part of the extension of electrical service to the project area. Therefore, construction of street lighting facilities will not be included in the City's � construction contract. Provisions for electrical service and associated restoration will be paid for and coordinated by the developer. Installation of the below-ground components of the lighting system will take place � concurrently with final boulevard grading. Installation of the above- ground components of the lighting system will not occur until the City's � street construction project is completed. � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 City of Rosemount, Minnesota Page 5 � � � In accordance with City requirements, lantern type lighting units will be installed by the developer. The developer will also coordinate and pay for � the installation and restoration associated with natural gas, telephone, and cable TV service. 1 3.5 Site Grading Site �grading will be accomplished by the developer under a separate contract prior to street and utility construction. The street subgrade � elevations will be left at or above the proposed subgrade elevation by the developer. Poor soils found in the street areas will be corrected by the developer. � 3.6 Easements � Easements will be needed along both sides of common lot lines where water main and storm drain piping is proposed. The following table summarizes the easements which may be required: � Table 1 Easement Requirements � Between And Purpose Lot Lot Block Width Comments ' Sanitary Sewer 13 14 1 30' Existing Easement � Water Main 14 15 1 30' Connect to RR Crossing � Storm Drain 4 5 2 20' Into Pond Storm Drain 8 9 2 20' Pond Overtlow � Storm Drain 13 14 3 20' Rear Yard Catch Basin � Storm Drain 8 9 1 20' Rear Yard Catch Basin � Storm Drain 16 17 1 20' Into U.P. RR R/W Storm Drain 21 22 1 20' Into U.P. � RR R/W Storm Drain 7 8 4 20' Rear Yard Catch Basin � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 City of Rosemount, Minnesota Page 6 � � � � � � � � � � � , � i I � � 1 � � � � � The remaining improvements will be installed in existing easements or in future street rights-of-way which will be dedicated to the City as � stipulated in the Developer's Agreement with the City. 3.7 Permits ' Permits and/or agreements will be required from several agencies for this project. The following table summarizes the permits which may be required: � Table 2 Permitting Requirements � Permitting Agency Permit Name Permit Fee � Minnesota Pollution Sanitary Sewer Extension $240.00 Control Agency(MPCA) Permit Minnesota Department Water Main Extension Permit $150.00 � of Heaith (MDH) Union Pacific (U.P.) Encroachment Agreement To Be � Railroad Determined by U.P. Railroad U.S. Sprint Encroachment Agreement To Be � Determined by U.S. Sprint � 4.0 Financing 4.1 Cost Estimates � Detailed cost estimates for all proposed improvements are included in Appendix A of this report. The estimates do not include site grading costs � or acquisition costs for easements which may be required. In addition, street lighting, electrical, gas, telephone, and cable TV costs are not included in the estimates. �' The cost estimates are based on bid prices obtained from similar type projects during 1998. The estimates include allowances for contingencies � (10 percent) and anticipated legal, administrative, engineering, and fiscal costs (30 percent). � A summary of these costs is presented in Table 3. � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page 7 � 1 Table 3 Summary of Cost Estimates ' Sanitary Water Storm Streets Total Sewer Main Drain � $264,000 $267,000 $260,000 $332,000 $1,123,000 4.2 Assessment Area � All lots within Phase II of the Biscayne Pointe development are subject to assessments to recover the pro�ect costs. � A summary of the parcels included in the assessment area is presented in Table 4. iTable 4 Assessment Area � Biscayne Pointe-Phase II No. of Block Lots Assessable Lots � 1 1 -25 24 2 1 - 15 15 � 3 1 - 12 16 4 1 - 6 8 Total Number of Assessable Lots 63 � 4.3 Cost Recover Y � The entire cost for Phase II of the Biscayne Pointe development will be recovered from assessments and City core funds. The cost for installing sanitary sewer across "Outlot A" from Phase I was previously assessed � to Phase II, and these costs have not been included in this report (see Preliminary Report for Phase I). � Because the 30-inch Brockway Draw sanitary sewer is a trunk facility which has been oversized to serve future development, the difference in cost between a 30-inch main and an 8-inch main is considered a City core � cost in a residential area. Likewise, the difference in cost between a 15- inch main and an 8-inch main (Belmont Trail) is considered a City core cost in a residential area. Therefore, the differences in cost are proposed � to be recovered from the City's Sanitary Sewer Core Facility Fund. This amount is estimated to be $72,000. Likewise, the 16-inch water main is � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 City of Rosemount, Minnesota Page 8 . � � ', also considered a trunk facility and the difference in cost between a 16- inch water main and an 8-inch water main is considered a City core cost � in a residential area. This difference in cost is proposed to be recovered from the City's Water Main Core Facility Fund. This amount is estimated to be $42,000. � After the sanitary sewer and water main core costs are subtracted from the total project cost of $1,123,000, the remaining assessable cost is � $1,009,000. This will be recovered by equally assessing the 63 single- family residential lots. Spreading the assessable cost of$1,009,000 over the 63 benefitting lots yields an approximate assessment rate of$16,016. � Table 5 Cost Recovery � Assessments $1,009,000 � Sanitary Sewer Core Facility Fund $72,000.00 Water Main Core Facility Fund $42,000.00 � Total $1,123,000 � 5.0 Project Schedule The proposed schedule for this improvement is listed below. This � schedule is based on the provisions of Chapter 429 of the Minnesota State Statues. The schedule assumes that all elements of the improvement, including developer obligations and easement acquisitions,are completed � in a timely manner. � • Order Feasibility Report April 20, 1999 • Receive Feasibility Report/Order Plans & Specs June 1, 1999 � • Receive Plans & Specs/Order Ad for Bid July 6, 19�� • Open Bids July 30, 1999 � • Award Contract August 3, 1999 • Begin Construction August 16, 1999 � • Substantial Completion November 15, 1999 � • Final Completion (wear course) June 1, 2000 � � Biscayne Point- Phase II, Street and Utility Improvements A-ROSEM9904.00 � City of Rosemount, Minnesota Page 9 � , Appendix A � Detailed Cost Estimates ' � � i 1 1 1 1 � t i � 1 1 r � , � ESTIMATE OF COST � Biscayne Pointe- Phase 11 Street and Utility Improvements City Project No. 309 1 SEH No. A-ROSEM9904.00 Sanitary Sewer Construction � Description Unit Quantity Unit Price Amount � 30" RCP (20'-30'depth) L.F. 750 $75.00 $56,250.00 * 15" PVC Sanitary Sewer Pipe (20'-30' depth) L.F. 680 $50.00 $34,000.00 • ' 8" PVC Sanitary Sewer Pipe (10'-15' depth) L.F. 770 $14.00 $10,780.00 4" PVC Sanitary Sewer Pipe L.F. 3,000 $8.00 $24,000.00 15" x 4" PVC Service Wye Each 14 $100.00 $1,400.00 * , 8" x 4" PVC Service Wye Each 16 $50.00 $800.00 Sewer Service Saddle for 8" PVC Each 23 $250.00 $5,750.00 Kor-n-Tee Service Connection for 30" RCP Each 10 $275.00 $2,750.00 * � Standard Manhole 10' Deep w/Casting Each 16 $1,400.00 $22,400.00 Excess Manhole Depth L.F. 230 $100.00 $23,000.00 Crushed Rock Pipe Foundation Ton 100 $10.00 $1,000.00 � Replacement Backfill Ton 100 $5.00 $500.00 Granular Pipe Foundation Ton 10 $6.00 $60.00 Connect to Existing Sanitary Sewer Each 2 $1,000.00 $2,000.00 � Subtotal Sanitary Sewer Construction $184,690.00 * Plus 10% Contingencies $18,469.00 � Estimated Construction Cost $203,159.00 Plus 30%Administrative, Legal, Fiscal and Engineering $60,841.00 Total Estimated Cost $264,000.00 * � * Includes Sanitary Sewer Core Cost � Sanitary Sewer Core Costs 30" RCP vs 8" RCP : difference of$45/ft x 750ft $33,750.00 15" PVC vs 8" PVC : difference of$20/ft x 680 ft $13,600.00 � 15"x4"Wye vs 8'x4'Wye: difference of$50 each x 14 $700.00 Kor-n-Tee vs 8"x4"Wye: difference of$225 each x 10 $2,250.00 ' Subtotal Core Costs $50,300.00 Plus 10%Corrtingencies $5,030.00 Estimated Core Costs $55,330.00 � Plus 30%Administrative, Legal, Fiscal and Engineering $16,670.00 Total Estimated Core Costs $72,000.00 � ' ' ' , ' � � ' � � � w � � ' � � � � , i 1 ESTIMATE OF COST ' Biscayne Pointe- Phase il Street and Utility Improvements City Project No. 309 , SEH No. A-ROSEM9904.00 Water Main Construction r Description Unit Quantity Unit Price Amount � 6" DIP Water Main, Class 52 L.F. 90 $16.00 $1,440.00 8" DIP Water. Main, Class 52 L.F. 2,520 $18.00 $45,360.00 � 16" DIP Water Main, Class 52 L.F. 1,070 $30.00 $32,100.00 • 16" DIP Water Main, Jacked Carrier L.F. 150 $30.00 $4,500.00 * Bore 30" Steel Casing L.F. 150 $250.00 $37,500.00 * , 6" Gate Valve & Box Each 7 $450.00 $3,150.00 8" Gate Valve & Box Each 7 $600.00 $4,200.00 16" Gate Valve & Box Each 1 $1,200.00 $1,200.00 * � Hydrant Each 7 $1,400.00 $9,800.00 DIP Water Main Fittings Lb. 4,700 $3.00 $14,100.00 * 1" Corporation, Curb Stop & Box Each 63 $150.00 $9,450.00 , 1" Copper Service L.F. 3,000 $7.00 $21,000.00 Connect to Existing, Water Main Each 2 $400.00 $800.00 Crushed Rock Pipe Foundation Ton 100 $10.00 $1,000.00 � Replacement Backfill Ton 100 $5.00 $500.00 Granular Pipe Foundation Ton 100 $6.00 $600.00 , Subtotal Water Main Construction $186,700.00 � Plus 10% Contingencies $18,670.00 Estimated Construction Cost $205,370.00 � Plus 30%Administrative, Legal, Fiscal and Engineering $61,630.00 Total Estimated Cost $267,000.00 * ' * Includes Water Main Core Cost � Water Main Core Costs 16" DIP vs 8" DIP: difference of$12/ft x 1220 $14,640.00 30"Casing vs 16' Casing: difference of$50/ft x 150 $7,500.00 ' Fittings: difference of 23001bs x$3/Ib $6,900.00 16" GV vs 8" GV: difference of$600%ach x 1 $600.00 ' Subtotal Core Costs $29,640.00 Plus 10%Contingencies $2,964.00 Estimated Core Costs $32,604.00 � Plus 30%Administrative, Legal, Fiscal and Engineering $9,396.00 Total Estimated Core Costs $42,000.00 � , � ESTIMATE OF COST � Biscayne Pointe - Phase II Street and Utility Improvements City Project No. 309 ' SEH No. A-ROSEM9904.00 Storm Drain Construction � � Description Unit Quantity Unit Price Amount 15" RCP Storm Drain Pipe L.F. 1,460 $20.00 $29,200.00 ' 18" RCP Storm Drain Pipe L.F. 360 $22.00 $7,920.00 21" RCP Storm Drain Pipe L.F. 620 $24.00 $14,880.00 30" RCP Storm Drain Pipe L.F. 1,160 $36.00 $41,760.00 � Manhole, Type B L.F. 100 $250.00 $25,000.00 Catch Basin, Type X L.F. 80 $175.00 $14,000.00 Catch Basin, Type Y L.F. 70 $200.00 $14,000.00 � R-1733 Manhole Casting Each 14 $300.00 $4,200.00 R3067V Catch Basin Casting Each 21 $300.00 $6,300.00 15" RCP Apron w/Trash Guard Each 1 $700.00 $700.00 � 21" RCP Apron w/Trash Guard Each 1 $1,000.00 $1,000.00 30" RCP Apron w/Trash Guard Each 2 $1,400.00 $2,800.00 Riprap, Class IV C.Y. 29 $70.00 $2,030.00 ' Granular Filter Blanket C.Y. 15 $20.00 $300.00 Silt Fence L.F. 6,000 $2.00 $12,000.00 � Straw Bales Each 100 $6.00 $600.00 Crushed Rock Pipe Foundation Ton 100 $10.00 $1,000.00 Granular Pipe Foundation Ton 100 $8.00 $800.00 , Pond Grading C.Y. 600 $5.00 $3,000.00 Subtotal Storm Sewer Drain Construction $181,490.00 � Plus 10% Contingencies $18,149.00 Estimated Construction Cost $199,639.00 Plus 30% Administrative, Legal, Fiscal and Engineering $60,361.00 � Total Estimated Cost $260,000.00 , ' � � � r ESTIMATE OF COST � Biscayne Pointe - Phase II Street and Utility Improvements City Project No. 309 � SEH No. A-ROSEM9904.00 Street Construction r � Description Unit Quantity Unit Price Amount Mobilization L.S. 1 $10,000.00 $10,000.00 ' Subgrade Preparation R.S. 33 $100.00 $3,300.00 Test Rolling R.S. 33 $20.00 $660.00 Aggregate Base Placed, Class 5 C.Y. 3,050 $12.00 $36,600.00 � Base Course Mixture, Type 31 Ton 1,550 $22.00 $34,100.00 Bituminous Material for Tack Coat Gallon 650 $1.50 $975.00 Wearing Course Mixture, Type 41 Ton 1,550 $24.00 $37,200.00 , Adjust Gate Valve Box Each 7 $150.00 $1,050.00 Adjust Frame and Ring Casting Each 30 $150.00 $4,500.00 Concrete Curb and Gutter, Modified L.F. 6,500 $6.00 $39,000.00 � 6" Concrete Walk S.F. 16,350 $3.00 $49,050.00 Seeding (including mulch w/anchoring) Acre 6 $600.00 $3,600.00 Sodding S.Y. 5,000 $2.00 $10,000.00 , Street Name Signs Each 2 $250.00 $500.00 Sign Panels, Type C S.F. 13 $25.00 $325.00 � Permanent Barricades L.F. 48 $30.00 $1,440.00 Subtotal Street Construction $232,300.00 ' Plus 10% Contingencies $23,230.00 Estimated Construction Cost $255,530.00 Plus 30% Administrative, Legal, Fiscal and Engineering $76,470.00 , Total Estimated Cost $332,000.00 , ' � � � � � � Appendix B , Drawings ' r � � � � � t � � � � � � t � � O � , � � , egan n LaF�e � � � o PROJECT LOCATION � � R 0 S E M 0 UNT ¢ P��RpP� R ? 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