HomeMy WebLinkAbout7.b. Shannon Pond Outlet & Watcher Pond Outlet Feasibility Study Discussion
EXECUTIVE SUMMARY
Utility Commission Meeting: November 23, 2020
AGENDA ITEM: Shannon Pond/Watcher Pond Outlet
AGENDA SECTION:
New Business
Feasibility Study Discussion
PREPARED BY: Brian Erickson, P.E., Director of Public
AGENDA NO. 7.b.
Works/City Engineer
ATTACHMENTS: Shannon Pond/Watcher Pond Outlet
APPROVED BY: BLE
Feasibility Study
RECOMMENDED ACTION: Discussion.
DISCUSSION:
Rosemount’s stormwater system has areas where the water reaches a dead end with no outlet. Due to the
sandy soils, infiltration at these ‘dead end’ ponds generally functions well. However, there are instances
where infiltration is insufficient to address the amount of stormwater that enters. As a result, the city has
in the past contracted for pumping to reduce the level of those ponds.
th
One pond of these ponds is Shannon Pond which is west of Shannon Parkway and just north of 160
th
Street (CSAH 46). This pond is difficult to pump down because of the barrier created by 160 St.
Additionally, pumping to the east is difficult because of the barrier created by the railroad line
approximately 0.5 miles to the east.
In an effort to address this concern, staff initiated a feasibility study to explore options for installing a
permanent lift station and force main to allow for drawing down the pond if needed. WSB & Associates
explored several different options and provided some concept level cost estimates.
Selection of a preferred option will likely require discussions with the Vermillion River Watershed Joint
Powers Organization (VRWJPO), Empire township and possibly other neighboring cities. Therefore, this
initial discussion with the Utility Commission will begin to provide a foundation for future efforts. Staff
will continue to move forward with planning efforts and provide periodic updates to the commission.
SUMMARY:
Discussion only.
C:\\Users\\jab\\AppData\\Local\\Temp\\7.b. Shannon Pond Outlet & Watcher Pond Outlet Feasibility Study Discussion_623346\\7.b. Shannon Pond Outlet & Watcher Pond Outlet Feasibility Study
Disc.docx
SHANNON AND WACHTER
POND OUTLETS
FEASIBILITY STUDY
CITY OF ROSEMOUNT
2875 145TH STREET WEEST | ROSEMOUNT, MN 55068
OCTOBER 2020
Prepared for:
City of Rosemount
2875 145th Street West
Rosemount, MN 55068
WSB PROJECT NO. 015190-000
FEASIBILITY REPORT
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Title Page
SHANNON AND WACHTER POND OUTLETS FEASIBILITY STUDY
For:
THE CITY OF ROSEMOUNT, MN
OCTOBER 2020
Prepared By:
CERTIFICATION
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Certification
I hereby certify that this plan, specification, or report was prepared by me
or under my direct supervision and that I am a duly licensed professional
engineer under the laws of the State of Minnesota.
Bill Alms, PE
Date: October 19, 2020 Lic. No. 54301
TABLE OF CONTENTS
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Table of Contents
TITLE SHEET
CERTIFICATION
TABLE OF CONTENTS
I. EXECUTIVE SUMMARY ........................................................................................................................ 2
II. BACKGROUND/PROJECT NEED ......................................................................................................... 4
III. METHODOLOGY ................................................................................................................................... 5
1. Future Trunk Line to the Mississippi River .................................................................................... 5
2. Intercommunity Discharge Rate Amendment ............................................................................... 5
3. Temporary Management ............................................................................................................... 5
IV. ALTERNATIVE ANALYSIS SUMMARY ................................................................................................. 6
1. Future Trunk Line to the Mississippi River .................................................................................... 6
a. Alternative 1a – Three Lift Station (Shannon/Wachter/ Business Park Pond) .............................. 6
b. Alternative 1b – Boulder Trail Trunk Line ...................................................................................... 6
c. Alternative 1c – Connection to MCES Interceptor ........................................................................ 7
2. Intercommunity Discharge Rate Amendment ............................................................................... 8
a. Alternative 2a – Outfall to the Future UMore Pond ....................................................................... 8
b. Alternative 2b –Outfall to Vermillion River Tributary through Empire Township ........................... 8
c. Alternative 2c – Discharge to East Lake through City of Lakeville ............................................... 9
3. Temporary Management ............................................................................................................. 10
a. Alternative 3a – Wensmann Pond Diversion Structure ............................................................... 10
b. Alternative 3b – Temporary Pumping ......................................................................................... 11
4. Right-of-Way/Easements ............................................................................................................ 12
V. FINANCING .......................................................................................................................................... 13
VI. PERMITTING AND AGREEMENTS ..................................................................................................... 14
VII. RECOMMENDATION ........................................................................................................................... 15
APPENDIX A – FIGURES
APPENDIX B – COST ESTIMATES
APPENDIX C – DWSMA AND UMORE RECLAMATION PLANS
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 2
I. EXECUTIVE SUMMARY
Shannon Pond Outlet consists of providing a stormwater outlet for Shannon Pond. Shannon Pond is a
landlocked stormwater basin in southwest Rosemount just northwest of the intersection of Shannon
Parkway and 160th Street West. There are some low-lying homes which are at risk of flooding with a
large enough storm event if the pond elevation is already high from previous storm events. The City has
had to emergency dewater Shannon Pond twice in 2019 to avoid flooding adjacent properties. In
response, the City requested the Shannon Pond Outlet Feasibility Report be updated to determine the
best outlet solution for Shannon Pond and to aid in the planning of future development within the City.
The improvements additionally benefit several other upstream regional ponding areas in the vicinity of this
study.
As part of this feasibility report, the twelve (12) options presented previously were reviewed, updated, and
consolidated into eight (8) different options in this report. These eight options were evaluated for
feasibility and cost estimates were calculated for the improvements. The eight options where grouped into
three large scale categories: 1) future trunk line to the Mississippi River, 2) intercommunity discharge rate
amendment, and 3) temporary management.
The previous feasibility study recommended a series of communications steps. Updates related to these
communications are as follows:
1. Discuss cooperate agreement with MCES to allow a connection to the Empire Wastewater
Treatment Plant effluent pipe to the Mississippi River at Biscayne Ave (Alternative 1c). Recent
discussions with MCES have indicated this connection would not be allowed upstream of the old
Rosemount Wastewater Treatment plant off 140th Street, East of TH52. As a result, the
advancement of this agreement has stalled until a trunk storm sewer connection can be made to
the east of HWY 52.
2. Discuss intercommunity discharge rate amendments with VRWJPO (Alternatives 2a-2c). This
dialog was initiated in 2013 as part of the VRWJPO Plan update. VRWJPO XPSWMM Model
updates were completed in 2016 and revised intercommunity discharge rates were established
for 5 locations along Rosemount’s Boarders. Established discharge rates were not sufficient to
provide necessary flood protection for the western half of Rosemount. It is recommended that
discussions with VRWJPO are continued with the results of this feasibility to evaluate possibility
of amending intercommunity discharge rates. This discussion will provide additional refinement
to the number of options presented.
3. Discuss cooperate agreement with University of Minnesota /Dakota Aggregates to discharge
overflows into the Dry/Wet Mining Phase 3-5 Areas which is proposed to become a future lake in
the UMORE AUAR. This option is outlined as Alternative 2a in this study. If agreements can be
established with the University of Minnesota this could serve as a interim solution until a trunk
line connection can be established along Boulder Trail to the Bloomfield Development or become
a permeant amendment to the CSWMP routing and connect through the UMORE development
to tributary overflows into the Vermillion River. It is recommended that communications with the
University of Minnesota are conducted simultaneously with VRWJPO outline in item 2 above.
4. Discuss acquisition of interim/permeant ponding easements from private property owners to
facilitate the construction of Alternatives 1a or 1b. Alternative 1b is recommended given the lower
capital and O&M project cost and allows flexibility based on agreement discussions with
University of Minnesota. Some easements may be able to be acquired with development;
however urgency to provide an outlet to Shannon Pond and discharge water to a suitable
location may require advanced negations with property owners.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 3
The total estimated project cost for Alternative 1b is $10,818,648 + required land acquisition cost to be
determined with communication plans outlined above.
It is proposed that communication begin with VRWJPO and University of Minnesota immediately through
the City of Rosemount. This project is feasible, necessary, and cost effective from an engineering
standpoint.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 4
II. BACKGROUND/PROJECT NEED
Shannon Pond is a landlocked stormwater basin in southwest Rosemount just northwest of the
intersection of Shannon Parkway and 160th Street West. The pond currently receives direct drainage
from existing neighborhoods surrounding the pond totaling approximately 176 acres and upstream
stormwater from the Wensmann Pond, Hawkins Pond, Birger Pond drainage areas totaling approximately
2000 acres. Wachter Pond is another landlocked pond within the City and receives direct drainage from
783 acres upstream.
The Shannon Pond Outlet/Lift Station Feasibility Report was completed in June 2007; however, an outlet
was never constructed. In February 2016, the City worked with the Vermillion River Watershed Joint
Powers Organization (VRWJPO) to update its XPSWMM model to include the City of Rosemount. The
VRWJPO’s XPSWMM model was the basis for establishing intercommunity discharge allowances which
are monitored by the VRWJPO. The intercommunity discharge allowances for the multiple discharge
points at the Rosemount City boundary can be seen on Figure 1. The City used the VRWJPO model to
update the City wide XPSWMM model in 2018 as part of the City’s Comprehensive Stormwater
Management Plan update.
Increased rainfall within the previous couple years has increased the urgency of constructing an outlet for
Shannon Pond. The City has had to emergency dewater the pond three times in 2019 to avoid flooding
adjacent properties. Without an outlet for Shannon Pond, during or after large storm events when
Shannon Pond and tributary ponds are at their high water levels it is possible that approximately 50
structures surrounding the ponds could be impacted (Figure 2). An additional 100 structures could be
impacted from Wachter Pond being at its high water with no outlet. Due to this urgency, the City
requested the Shannon Pond Outlet Feasibility Report be updated to determine the best outlet solution
and to aid in the planning of future development within the City. The improvements additionally benefit
several other upstream regional ponding areas in the vicinity of this study.
It is estimated that for the 24-hour, 100-year event, a 15 cfs discharge rate will be required to outlet from
the basin which is far too high for infiltration, evaporation, or additional storage given the land constraints
and volume of required storage.
The Wachter Pond Drainage Study was completed in December 1993. The study noted that the
anticipated HWL from the critical 100-year event would inundate the adjacent Trunk Highway 3 (TH 3) if
no outlet were constructed. This observation was confirmed with the City’s updated XPSWMM model in
2018. The Wachter Pond Drainage Study recommended constructing a pumped outlet which would
discharge to the Business Park ponds (Pond 1990) but this outlet was never constructed. This feasibility
study uses the original Wachter Pond Drainage Study as the basis for the routing of the proposed
Wachter Pond outlet. It is estimated that a 10 cfs lift station will be required for the Wachter Pond outlet to
meet freeboard requirements with respect the adjacent homes and TH 3.
Some of the pond outlet improvement alternatives analyzed are a step towards the long-term intent of
Rosemount’s Comprehensive Stormwater Management Plan to provide a City outlet to the Mississippi
River. Two of the alternatives analyzed include ultimately discharging to the Vermillion River through
Tributary Number 5C. These alternatives and other alternatives which cross into adjacent communities
present additional permitting considerations to change the allowed intercommunity flow rate, to construct
outside of the City boundaries, and to meet water quality and temperature requirements.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 5
III. METHODOLOGY
The City’s XPSWMM model was reviewed and updated within the Shannon Pond subwatershed as well
as any tributary subwatersheds to Shannon Pond including the Birger Pond, Hawkins Pond, Wachter
Pond, and a portion of the Erickson Pond subwatersheds. As part of the 2018 updates to the model the
rainfall depths were changed to Atlas 14 conditions. The 2018 XPSWMM model and the 2016 VRWJPO
model were used for comparison and calibration. This provided a base model which was modified to
compare the different alternatives.
The alternatives analyzed in the original 2007 Shannon Pond Outlet Study were used as a starting point
for this feasibility report. Some additional alternatives were added based on discussions with City staff.
The alternatives analyzed can be broken down into three large scale categories: future trunk line to the
Mississippi River, intercommunity discharge rate amendment, and temporary management. As noted
previously the proposed routing in the original Wachter Pond Drainage Study was used as the basis for
the routing of the proposed Wachter Pond outlet in this study. The discharge volumes from Shannon
Pond and Wachter Pond will be consistent for all of the future trunk line options and are summarized
below.
Table 1 – Shannon Pond (0614) Discharge Volumes
Storm Duration Storm
Frequency
Discharge Volume
(ac-ft)
HWL
(ft)
24-hour
2-year 77.2 915.5
10-year 196.7 918.0
100-year 388.9 922.3
4-day 100-year 410.1 923.6
10-day snowmelt 100-year 329.7 919.5
Table 2 – Wachter Pond (2443) Discharge Volumes
Storm Duration Storm
Frequency
Discharge Volume
(ac-ft)
HWL
(ft)
24-hour
2-year 53.0 911.7
10-year 112.0 917.6
100-year 287.5 928.9
4-day 100-year 344.4 931.1
10-day snowmelt 100-year 272.8 925.1
1. Future Trunk Line to the Mississippi River
Three alternatives analyzed direct the Shannon Pond outlet east with the overall intent to take the
discharge all the way to the Mississippi River (see Future Trunk Line to the Mississippi River
Alternatives Figure). These options include combining the outlets from Shannon Pond and Wachter
Pond into one trunk line to the east.
2. Intercommunity Discharge Rate Amendment
Three alternatives were analyzed that include discharging water across the City boundary and would
require an intercommunity discharge rate amendment be agreed upon with the appropriate neighboring
City(s) and the VRWJPO (see Intercommunity Discharge Rate Amendment Alternatives Figure).
Additional agreements with neighboring communities would be required for the majority of these
alternatives.
3. Temporary Management
Two temporary management solutions were analyzed (see Temporary Management Alternatives
Figure) one of which represents an interim condition solution of continuing to emergency dewater
Shannon Pond when it presents a flooding risk to adjacent properties and discharging water south of
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 6
160th Street to the gravel mine. The other temporary management solution looked into involves
constructing a diversion structure upstream of Shannon Pond to reduce the amount of water getting to
Shannon Pond in larger storm events.
IV. ALTERNATIVE ANALYSIS SUMMARY
1. Future Trunk Line to the Mississippi River
a. Alternative 1a – Three Lift Station (Shannon/Wachter/ Business Park Pond)
The proposed improvements for Alternative 1a include constructing a 15 cfs lift station at Shannon Pond
with a combination of force main and gravity storm sewer as shown in the Alternative 1a Figure. The
pipe alignment is east from Shannon Pond on the south side of 160th Street utilizing the 160th Street right-
of-way just past the railroad crossing. At this location, the alignment turns north, following the south edge
of Canada Circle and would continue along the proposed alignment for Canada Circle until discharging
east into Pond 2274. A 10 cfs lift station would also be constructed at Wachter Pond with the force main
from Wachter Pond connecting into the gravity main trunk line from Shannon Pond directly east of
Wachter Pond.
Gravity storm sewer connections would also be made from Pond 2274 to Pond 2164 to Pond 2187. Pond
2187 would discharge to Pond 1990 (Business Park Pond) through existing storm sewer. A 26 cfs lift
station from Pond 1990 would direct water through force main within the County Highway 42 right of way
to Pond 1864.
Alternative Considerations:
· Three lift stations (Shannon Pond, Wachter Pond, and Pond 1990) would be constructed and
connected into the one main trunk line
· The 160th Street and Canada Circle right of way are utilized to minimize land acquisition
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer force main would cross Robert Trail South and would need to be
coordinated with MnDOT.
· A railroad crossing north of CSAH 46 will need to be coordinated with Union Pacific Railroad.
· Furthers the intent to create a City hydraulic outlet to the Mississippi River
b. Alternative 1b – Boulder Trail Trunk Line
The proposed improvements for Alternative 1b include constructing a constructing a 15 cfs lift station at
Shannon Pond with a combination of force main and gravity storm sewer as shown in the Alternative 1b
Figure. The pipe alignment is east from Shannon Pond on the south side of 160th Street utilizing the 160th
Street right-of-way just past the railroad crossing. At this location, the alignment turns north, following the
south edge of Canada Circle and would continue along the proposed alignment for Canada Circle until
discharging east into Pond 2274. A 10 cfs lift station would also be constructed at Wachter Pond with the
force main from Wachter Pond connecting into the gravity main trunk line from Shannon Pond directly
east of Wachter Pond. Pond 1990 would discharge to Pond 2187 through gravity main.
Gravity storm sewer connections would also be made from Pond 2274 to Pond 2164 to Pond 2187 and
then storm sewer would follow the future alignment for Boulder Trail through the Umore property north to
Pond 1918 and from Pond 1918 to Pond 1864.
Alternative Considerations:
· Two lift stations (Shannon Pond and Wachter Pond) would be constructed and connected into the
one main trunk line
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 7
· Requires the development of northern portion of UMORE mine to connect to trunk line at 1864.
· The 160th Street, Boulder Trail, and Canada Circle right of way are utilized to minimize land
acquisition
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT
· A railroad crossing north of CSAH 46 will need to be coordinated with Union Pacific Railroad.
· Furthers the intent to create a City hydraulic outlet to the Mississippi River
c. Alternative 1c – Connection to MCES Interceptor
The proposed improvements for Alternative 1c include constructing a 15 cfs lift station at Shannon Pond
with a combination of force main and gravity storm sewer as shown in the Alternative 1c Figure. The
pipe alignment is east from Shannon Pond on the south side of 160th Street utilizing the 160th Street right-
of-way just past the railroad crossing. At this location storm sewer would be changed to gravity main and
would continue east along 160th Street until a connection can be made to the existing MCES interceptor
system at Biscayne Avenue. The MCES interceptor flows north and east and eventually outlets to the
Mississippi River.
A 10 cfs lift station would also need to be constructed at Wachter Pond with the force main from Wachter
Pond being routed east to Pond 2274. Pond 1990 would discharge to Pond 2187 through gravity main.
Alternative Considerations:
· Additional connection agreements are required prior to construction between the City and MCES.
MCES has provided a discharge limitation (38 cfs) and MCES has currently stated they will not
allow this connection due to desires to utilize the interceptor effluent for industrial reuse.
Additional negotiations would be required to advance this alternative.
· The 160th Street right of way is utilized to minimize land acquisition
· Two lift stations (Shannon Pond and Wachter Pond) be constructed. The Wachter Pond lift
station would still be required and could not be connected with the Shannon Pond outlet.
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT
· Furthers the intent to create a City hydraulic outlet to the Mississippi River
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 8
2. Intercommunity Discharge Rate Amendment
a. Alternative 2a – Outfall to the Future UMore Pond
The proposed improvements for Alternative 2a include constructing a 15 cfs lift station at Shannon Pond
with a combination of force main and gravity storm sewer as shown in the Alternative 2a Figure. The
pipe alignment is east from Shannon Pond on the south side of 160th Street utilizing the 160th Street right-
of-way just past the railroad crossing. At this location storm sewer would be changed to gravity main and
would continue east along 160th Street until a connection can be made to Pond 2162 on the UMore
property. An outlet from Pond 2162 would be directed south out of the City.
A 10 cfs lift station would also need to be constructed at Wachter Pond with the force main from Wachter
Pond being routed east to Pond 2274. Pond 1990 would discharge to Pond 2187 through gravity main.
Gravity storm sewer connections would also be made from Pond 2274 to Pond 2164 to Pond 2187 and
then storm sewer would outlet to Pond 2162 on the UMore property. Storm sewer for the future
development within UMore could be constructed along the future Boulder Trail alignment until discharging
into Pond 1918 and from Pond 1918 to Pond 1864.
Alternative Considerations:
· Two lift stations (Shannon Pond and Wachter Pond) would be constructed and connected into the
one main trunk line
· Permitting would be required to discharge stormwater in Pond 2162 on the UMore property. A
portion of Future Pond 2162 is within a high risk Drinking Water Supply Management Area
(DWSMA) and within a Wellhead Protection Area. Additionally, the depth of future Pond 2162
shown in the UMore reclamation plan may interact with the groundwater in the area. Because of
these factors additional treatment prior to discharging to Pond 2162 and/or other additional
analysis may be needed to avoid contamination of the groundwater. The UMore reclamation plan
and a figure showing the DWSMAs within the City are included in Appendix C.
· Pond 2162 won’t be able to be utilized until mining operations are completed within the UMore
property which would push back the timeline of this option
· The 160th Street and Boulder Trail right of way are utilized to minimize land acquisition
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT
b. Alternative 2b –Outfall to Vermillion River Tributary through Empire Township
The proposed improvements for Alternative 2b include constructing a 15 cfs lift station at Shannon Pond
and force main sewer as shown in the Alternative 2b Figure. The pipe alignment is east from Shannon
Pond on the south side of 160th Street utilizing the 160th Street right-of-way just past the railroad crossing
to Biscayne Avenue. Force main would turn south at Biscayne Avenue, entering Empire Township, and
would continue south until it could outlet to Tributary Number 5C of the Vermillion River
A 10 cfs lift station would also need to be constructed at Wachter Pond with the force main from Wachter
Pond being routed east to Pond 2274. Pond 1990 would discharge to Pond 2187 through gravity main.
Alternative Considerations:
· Permanent easements and an agreement with Empire Township are required for the section of
force main along Biscayne Avenue within Empire Township. This roadway is expected to only
have prescriptive rights within the roadway.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 9
· Additional agreements are required prior to construction between the City and the Vermillion
River Watershed Joint Powers Organization to construct an outfall to a tributary of the Vermillion
River.
· Two lift stations (Shannon Pond and Wachter Pond) would be constructed. The Wachter Pond lift
station would still be required and could not be connected with the Shannon Pond outlet.
· There is a significant distance from the lift station to the outfall point and therefore this option
would have a very large cost.
· It is expected that there are erodible soils near the Vermillion River tributary.
· The Vermillion River is a protected trout stream with special stormwater temperature
requirements which need to be addressed.
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT.
· Alternative routings of the Watcher Pond outlet could be considered.
c. Alternative 2c – Discharge to East Lake through City of Lakeville
The proposed improvements for Alternative 2c include constructing a 15 cfs lift station at Shannon Pond
and force main sewer as shown in the Alternative 2c Figure. The pipe alignment is west from Shannon
Pond on the south side of 160th Street utilizing the 160th Street right-of-way. The storm sewer would
continue west along 160th Street and then south to East Lake.
A 10 cfs lift station would also need to be constructed at Wachter Pond with the force main from Wachter
Pond being routed east to Pond 2274. Pond 1990 would discharge to Pond 2187 through gravity main.
Alternative Considerations
· An agreement with the City of Lakeville would need to be established to determine allowed
discharge to East Lake.
· East Lake is impaired for nutrients and a TMDL for waste load allocations (WLA) has been
established. The City has engaged the MPCA to confirm that this alternative is feasible under the
MPCA’s permitting guidelines. The City’s MS4 permit would be used as a control document for
the discharge under anti-degradation rules. The City’s WLA for East Lake is currently near zero,
so redirected flows to Cobblestone Lake would need to have limited phosphorus concentrations
to meet the City’s WLA for the East Lake watershed.
· The 160th Street right of way is utilized to minimize land acquisition.
· Two lift stations (Shannon Pond and Wachter Pond) would be constructed. The Wachter Pond lift
station would still be required and could not be connected with the Shannon Pond outlet.
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT
· Alternative routings of the Wachter Pond outlet could be considered.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 10
3. Temporary Management
a. Alternative 3a – Wensmann Pond Diversion Structure
The proposed improvements for Alternative 3a include constructing a diversion structure with a relief
valve at the outlet from Wensmann Pond (Pond 2111) to divert Wensmann Pond’s discharge across the
City boundary into Apple Valley to Cobblestone Lake when needed as shown in the Alternative 3a
Figure. Water would then utilize the existing Cobblestone Lake outlet which goes south into Lakeville to
East Lake. The relief valve would remain closed until water levels in Shannon Pond and/or upstream
ponds reached a predetermined elevation which would trigger opening the relief valve to utilize the
diversion to Apple Valley. This would act as a form of temporary management until pond elevations
returned to an acceptable level.
The proposed diversion to Cobblestone Lake was sized to discharge the volume being pumped from the
upstream Birger Pond, Hawkins Pond, Copper Pond and Marcotte Pond for 96-hours during several
storm events. It was assumed that after 96-hours the upstream ponds would return back to an acceptable
water level and the lift station pumps at upstream ponds would be turned off. Table 5 shows the
discharge volume over a 96-hour period for several storm events.
Table 5- Volume Discharged to Cobblestone Lake (ac-ft)
24-hour, 100-yr 4-day, 100-yr 10-day snowmelt
72.62 58.91 1.82
Table 5 includes water from Lebanon Hills Pond 1213 under the assumption that a proposed lift station
from Pond 1213 is constructed and directed to Marcotte Pond. If the water from Pond 1213 isn’t included
the volume discharged to Cobblestone Lake decreases to what is shown in Table 6.
Table 6- Volume Discharged to Cobblestone Lake Excluding Pond 1213 Discharge (ac-ft)
24-hour, 100-yr 4-day, 100-yr 10-day snowmelt
55.34 50.98 1.16
This outlet from Wensmann Pond would reduce the risk of flooding downstream at Shannon Pond and
would alleviate the immediate need to construct an outlet at Shannon Pond. However, a lift station of at
least 7 cfs from Shannon Pond would still be required to alleviate the risk of inundating adjacent
structures.
A 10 cfs lift station would still need to be constructed at Wachter Pond with the force main from Wachter
Pond being routed east to Pond 2274. Pond 1990 would discharge to Pond 2187 through gravity main.
Alternative Considerations:
· An agreement with all stakeholders would need to be established to determine an allowable
discharge. Stakeholder include the City of Apple Valley, the City of Lakeville, MPCA, DNR, and
the VRWJPO.
· East Lake is impaired for nutrients and a TMDL for waste load allocations (WLA) has been
established. The City has engaged the MPCA to confirm that this alternative is feasible under the
MPCA’s permitting guidelines. The City’s MS4 permit would be used as a control document for
the discharge under anti-degradation rules. The City’s WLA for East Lake is currently near zero,
so redirected flows to Cobblestone Lake would need to have limited phosphorus concentrations
to meet the City’s WLA for the East Lake watershed.
· Two lift stations (Shannon Pond and Wachter Pond) would be constructed and connected into the
one main trunk line
· By discharging water out of the City upstream of Shannon Pond the flooding risk around Shannon
Pond is reduced and the immediate need for an outlet from Shannon Pond is reduced. An outlet
for Shannon Pond could be constructed in conjunction with future development.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 11
· Land would need to be acquired from the planned Canada Circle roadway extension to Pond
2274
· All lift stations will be connected to SCADA system allowing coordination with upstream and
downstream ponds
· Portions of the storm sewer would cross Robert Trail South and would need to be coordinated
with MnDOT
· Alternative routings of the Watcher Pond could be considered.
b. Alternative 3b – Temporary Pumping
Alternative 3b represents an interim condition solution of continuing to temporary dewater Shannon Pond
when it presents a flooding risk and discharging water south of 160th Street to the gravel mine as shown
in the Alternative 3b Figure.
The City has used temporary pumping to dewater Shannon Pond previously to provide emergency flood
risk mitigation when needed. In 2019, the City used temporary pumps to bring down water levels in
Shannon on two occasions. Pumping time varied each time between a week to about a month and the
total cost to the City for both occasions was around $50,000. The water was discharged across 160th
Street to the gravel mine. The costs above are only for the labor and operation of the pumping equipment;
costs for securing pumping equipment and coordinating an agreement with the gravel mine owners every
year are not included in the $50,000.
Because the City does not own the pumping equipment the City does not have a guarantee that they will
be able to secure pumping equipment in an emergency. Additionally, without a permanent agreement in
place, there is a risk that the gravel mine owner may not allow the City to pump to their site in the future.
The gravel mine owner has noted previously that they are concerned with increasing levels of
groundwater due to the pumping which may make the owner less likely to allow water to be pumped to
their site. Unlike the permanent outlet alternatives presented, the variables noted for Alternative 3b
increase the risk that the City would not be able to dewater Shannon Pond in a quick enough time frame
to stop the pond from inundating adjacent homes.
The City could continue to temporary pump from Shannon Pond on an as needed basis and could
assume costs for pumping would be in line with 2019 pumping costs plus the costs for securing the
pumping equipment and getting approval from the gravel mine landowner.
Alternative Considerations
· This alternative does not present a long-term solution to providing an outlet for Shannon Pond,
nor does it present a solution for other waterbodies (Wachter and Pond 1990) within the City.
· An agreement with the owners of the gravel mine must be reached each time the City needs to
dewater. The City runs the risk of the gravel mine not agreeing to allow the City to discharge to
their property.
· The City does not own the dewatering equipment and would not be guaranteed a response in an
emergency.
· Low up-front costs compared to other alternatives.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 12
4. Right-of-Way/Easements
It is recommended that a combination of permanent utility easements and permits within the existing
right-of-way be secured along the entire length improvements. Land acquisition may be an added project
cost, but an opportunity may exist to obtain easements through dedication if the improvements are
phased with development. Additional easement requirements may exist if unforeseen issues arise with
the use of the right-of-way along 160th Street West. To date, the project has been supported through
conversations with Dakota County.
Easement area estimates for the required permanent and temporary easements can be found in
Appendix C. Easements were not estimated for improvements east of Akron Avenue for this analysis.
The estimates assume the 2020 estimated land values for fee title are $125,000 per acre with a
permanent easement requiring 80% of the fee title cost and temporary easements requiring 15% per year
of the fee title cost. Variation of land value is expected based on current market value as well as
easement location within a specific parcel. An appraisal will be necessary to determine the exact value of
each property and required easement.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 13
V. FINANCING
A detailed opinion of cost for the first seven alternatives can be found in Appendix B of this report. Table
7 shows a summary of the anticipated costs for each alternative. The opinion of probable cost
incorporates estimated 2020 construction costs, including a 20% contingency, and 30% for all related
indirect costs (legal, administrative, engineering, and financing items).
Financing for this entire project will be provided by the City of Rosemount Stormwater Utility Fund. It is
expected that this project will be completed over several years as the areas adjacent to the improvements
are developed by land owners. This will provide an opportunity for some or all of the easements to be
dedicated which will reduce the total project cost and funding requirements. The exact funding
requirements are not know at this time due to the variation in development. It is expected that the
improvements will be sequenced with the recommendations provided in the following section.
Several Bonding bills programs have been presented in 2019 to assist communities with adapting to
climate change. In January 2020, Governor Walz recommended $15 million for a pilot program. This
year’s legislative session is unusual, and funding is not guaranteed. If the bonding bill is passed, the
program could be open to applicants as soon as fall 2020. Grants would fund projects to increase the
storage, infiltration, and conveyance capacity of stormwater systems, as well as increasing the durability
of stormwater systems. Pending approval of the bill, municipalities and public entities in partnership with
municipalities would be encouraged to apply.
Table 7- Option Cost Estimate Summary Table Alternative Surface Improvements Construction Estimate Wachter Pond Outlet Construction Estimate Shannon Pond Outlet Construction Estimate Trunk Storm Sewer Improvements Construction Estimate Contingency Indirect Costs Total Cost Alternative 1a:
Three Lift
Stations
$2,135,166 $919,000 $2,145,000 $4,456,980 $1,931,230 $3,476,210 $15,063,586
Alternative 1b:
Boulder Trail
Trunk Line
$998,590 $919,000 $2,145,000 $2,872,438 $1,387,010 $2,496,610 $10,818,648
Alternative 1c:
Connection to
MCES Interceptor
$721,976 $919,000 $2,155,000 $1,223,660 $1,003,930 $1,807,070 $7,830,636
Alternative 2a:
Outfall to the
Future UMore
Pond
$908,625 $919,000 $2,155,000 $1,689,660 $1,134,460 $2,042,030 $8,848,775
Alternative 2b:
Outfall to
Vermillion River
Tributary
$1,015,625 $919,000 $3,210,000 $2,222,766 $1,473,480 $2,652,260 $11,493,131
Alternative 2c:
Discharge to East
Lake
$1,236,885 $919,000 $1,170,000 $2,601,416 $1,185,460 $2,133,830 $9,246,591
Alternative 3a:
Wensmann Pond
Diversion
Structure
$1,064,130 $919,000 $1,452,500 $2,503,812 $1,187,890 $2,138,200 $9,265,532
Alternative 3b:
Temporary
Pumping
$579,830 $919,000 $75,100 $2,206,016 $755,990 $1,360,780 $5,896,716
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 14
VI. PERMITTING AND AGREEMENTS
All long-term alternatives presented will require permitting through different state agencies and/or
agreements with different entities. Table 8 summarizes the anticipated permits and/or agreements
required for each alternative. Additional time for coordination and permitting should be considered for
alternatives that require multiple agreements or permits. As all long-term alternatives include constructing
storm sewer which crosses Robert Trail South (Trunk Highway 3) a permit from MnDOT will be required.
Additionally, all long-term alternatives include constructing storm sewer which crosses under railroad
tracks requiring an agreement with Union Pacific Railroad.
The Intercommunity Discharge Rate Amendment alternatives analyzed (Alternatives 2a-2c) would require
agreements with adjacent communities as well as the VRWJPO. Getting an intercommunity discharge
rate amendment approved by the VRWJPO is anticipated to be difficult. Since the VRWJPO established
intercommunity discharge rates in 2016 there have not been any rate amendments approved.
Additionally, it is expected to be difficult to get adjacent communities to agree to allow more water to
come into their City than what they have currently. These anticipated challenges with agreements may
push back times and should be considered when deciding on the preferred alternative.
Table 8 - Option Summary Table
Alternative Total Cost
Permitting Agencies Agreements DNR MPCA MDH MnDOT VRWJPO Union Pacific Railroad MCES City Apple Valley City of Lakeville Empire Township Gravel Mine Alternative 1a:
Three Lift
Stations
$15,063,586 X X
Alternative 1b:
Boulder Trail
Trunk Line
$10,818,648 X X
Alternative 1c:
Connection to
MCES
Interceptor
$7,830,636 X X X
Alternative 2a:
Outfall to the
Future UMore
Pond
$8,848,775 X X X X
Alternative 2b:
Outfall to
Vermillion River
Tributary
$11,493,131 X X X X
Alternative 2c:
Discharge to
East Lake
$9,246,591 X X X X X
Alternative 3a:
Wensmann
Pond Diversion
Structure
$9,265,532 X X X X X X X
Alternative 3b:
Temporary
Pumping
$5,896,716 X X X
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Page 15
VII. RECOMMENDATION
The intent of this feasibility report was to determine the best option for providing an outlet for Shannon
Pond. In addition, analysis was done for providing outlets for other waterbodies in the City such as
Wachter Pond and Pond 1990. A series of recommendations have been provided below detailing the best
course of action given the agreements and unknowns surrounding the adjacent properties.
At this time, it is recommended to start communication with the VRWJPO. If an agreement cannot be
reached to amend the intercommunity discharge rates it is recommended that the city pursue discharges
via Alternative 2a to the UMORE Mine Pond followed by Alternatives 1a / 1b based on proposed
development schedule.
It is recommended that Alternatives 1a/1b be completed in stages to allow for development to coincide
with the improvements making land dedication possible. It is possible to phase Alternative 1a/1b,
allowing additional time for an agreement to be made between the U of M and the City of Rosemount.
The first phase should include all improvements west of Biscayne Avenue without the connection
between Pond 2187 and Pond 2162. If an agreement between the U of M and the City of Rosemount
cannot be found it is recommended that the improvements should continue as outlined within Alternative
1a of this report.
If an agreement between the U of M and the City of Rosemount can be obtained, Alternative 1b is
recommended given relative lower project cost, the construction of a significant portion of the City’s
stormwater conveyance system. Alternative 1b also provides the flexibility to switch to Alternative 2a if it
can be agreed upon by the U of M, VRWJPO and the City.
The total estimated cost not including land acquisition of Alternative 1b is $10,818,648. The entire project
cost is proposed to be funded by the City Storm Sewer Core Funds.
This project is feasible because there are no engineering factors to prevent the project from being
completed. The project is necessary to provide an outlet to Shannon Pond as required by the Rosemount
Comprehensive Stormwater Management Plan and to reduce the risk of flooding to structures. The
project is also cost-effective from a design efficiency standpoint by utilizing the 160th Street West right-of-
way and incorporating a combination of force main and gravity storm sewer. We recommend completion
of the Shannon Pond Outlet Project as outlined in this report.
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Appendix
APPENDIX A
FIGURES
Xä
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Future Trunk Line to the Mississippi River Alternatives Figure
Alt. 1a Gravity Storm
Alt. 1a Force Main
Alt. 1b Gravity Storm
Alt. 1b Force Main
Alt. 1c Gravity Storm
Alt. 1c Force Main
Wachter Pond Force Main Outlet
Xä Proposed Lift Stations
Regional Basins
Planned Pond Expansion
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
15 CFS Lift
Station
10 CFS Lift
Station
Approx. transition at 948'
26 CFS Lift
Station (Alt. 1a
Only)
Xä
Connect to MCES Interceptor
(Alt. 1c Only
Connect to MCES Interceptor
(Alt. 1c Only
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WSB Project No. 015190-000
Intercommunity Discharge Rate Amendment Alternatives Figure
Alt. 2a Gravity Storm Sewer
Alt. 2a Force Main
Alt. 2b Gravity Storm Sewer
Alt. 2b Force Main
Alt. 2c Gravity Storm Sewer
Alt. 2c Force Main
Wachter Pond Force Main Outlet
Xä Proposed Lift Stations
Regional Basins
Planned Pond Expansion
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
15 CFS Lift
Station
10 CFS Lift
Station
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WSB Project No. 015190-000
Temporary Management Alternatives Figure
Alt. 3a Gravity Storm Sewer
Alt. 3a Force Main
Alt. 3b Gravity Storm Sewer
Wachter Pond Force Main Outlet
Regional Basins
Planned Pond Expansion
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
7 CFS Lift
Station (Alt. 3a
Only)
Diversion
Structure From
Wensmann
Pond (Alt. 3a
Only)
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West U of M
Erickson Pond
Wachter Pond
Keegan LakeHawkins Pond
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WSB Project No. 015190-000
Alternative 1a
"Trunk Storm Sewer
Xä Proposed Lift Stations
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Proposed Gravity
Existing Force Main
Regional Basins
Planned Pond Expansion
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
"AddStormSewer
15 CFS Lift
Station
10 CFS Lift
Station
5,900 LF 24"
Force Main
1,480 LF 24"
Gravity Main
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 48"
Gravity Main
520 LF 48"
Gravity Main
5,400 LF 30"
Force Main
3,600 LF 48"
Gravity Main
500 LF 48"
Gravity Main
Approx. transition at 948'
26 CFS Lift
Station
Xä 5,700 LF 21"
Gravity Main
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Erickson Pond
Wachter Pond
Keegan Lake
Hawkins Pond
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WSB Project No. 015190-000
Alternative 1b
"Trunk Storm Sewer
Xä Proposed Lift Stations
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Proposed Gravity
Existing Force Main
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
Regional Basins
Planned Pond Expansion
15 CFS Lift
Station
10 CFS Lift
Station
5,900 LF 24"
Force Main
1,480 LF 24"
Gravity Main
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 48"
Gravity Main
520 LF 48"
Gravity Main
8,400 LF 48"
Gravity Main
480 LF 24"
Gravity Main
770 LF 18"
Gravity Main
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%%%%%%%%%%%%"Shannon Pond
West U of M
Erickson Pond
Wachter Pond
Keegan LakeHawkins Pond
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WSB Project No. 015190-000
Alternative 1c
"Trunk Storm Sewer
Xä Proposed Lift Stations
Xä Existing Lift Stations
Proposed Force Main
Proposed Gravity
Existing Force Main
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
Regional Basins
Planned Pond Expansion
15 CFS Lift
Station
10 CFS Lift
Station
6000 LF 24"
Force Main
3,250 LF 24"
Gravity Main
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 36"
Gravity Main
520 LF 36"
Gravity Main
Outfall into
MCES Trunkline
Cobblestone Lake
Outfall into
MCES Trunkline
770 LF 18"
Gravity Main
5,700 LF 21"
Gravity Main
480 LF 24"
Gravity Main
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Erickson Pond
Wachter Pond
Keegan LakeHawkins Pond
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WSB Project No. 015190-000
Alternative 2a
"Trunk Storm Sewer
Xä Proposed Lift Stations
Proposed Force Main
Proposed Gravity
Existing Force Main
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
Regional Basins
15 CFS Lift
Station
6000 LF 24"
Force Main
3,250 LF 24"
Gravity Main
5,700 LF 21"
Gravity Main
480 LF 24"
Gravity Main
10 CFS Lift
Station
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 36"
Gravity Main
520 LF 36"
Gravity Main
770 LF 18"
Gravity Main
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WSB Project No. 015190-000
Alternative 2b
"Trunk Storm Sewer
Xä Proposed Lift Stations
Proposed Force Main
Proposed Gravity
Existing Force Main
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
Floodway
100-Year Floodplain
Regional Basins
Planned Pond Expansion
15 CFS Lift
Station
11,100 LF 24"
Force Main
10 CFS Lift
Station
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 36"
Gravity Main
520 LF 36"
Gravity Main
8,400 LF 36"
Gravity Main
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Empire Twp.
Shannon Pond
Erickson Pond
Wachter Pond
*2443
2448
2447
0614
6091
2450 2270
0609
2445
2274
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0600 2451
0788
7941
3004
3006
3007
3092
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0 1,000
FeetShannon and Wachter Pond Outlets Feasibility Study
WSB Project No. 015190-000
Alternative 2c
"Trunk Storm Sewer
Xä Proposed Lift Stations
Proposed Force Main
Proposed Gravity
Existing Force Main
Regional Basins
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
15 CFS Lift
Station
10 CFS Lift
Station
2,000 LF 24"
Force Main
4,500 LF 24"
Gravity Main
Potential to Tie into Existing Outlet
from Cobblestone to East Lake
Lakeville770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
$""""""""""
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Apple Valley
Lakeville Apple ValleyEmpire Twp.LakevilleEmpire Twp.LakevilleShannon Pond
Erickson Pond
Wachter Pond
Hawkins
Pond
*2443
2448
2447
0614
2162
6091
2450 2270
0609
2445
2274
2444
2164
2446
2111
2449 2187
2439 0202
0600 2451
2119
0788 1990
7941 2030
2042 203102472442
02430240
3004
3006
3007 3008
3092 3103
2441 Document Path: K:\015190-000\GIS\Maps\015190-000 Shannon Pond\Alternative 3a Date Saved: 8/17/2020 3:57 PM¯1 inch = 1,000 feet
0 1,000
FeetShannon and Wachter Pond Outlets Feasibility Study
WSB Project No. 015190-000
Alternative 3a
"Trunk Storm Sewer
Xä Proposed Lift Stations
Proposed Force Main
Proposed Gravity
Existing Force Main
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
UMore Boundary
Regional Basins
Planned Pond Expansion
10 CFS Lift
Station
7 CFS Lift
Station
5,900 LF 18"
Force Main
770 LF 24"
Force Main
2,150 LF 30"
Gravity Main
620 LF 36"
Gravity Main
520 LF 36"
Gravity Main
Cobblestone Lake
8,400 LF 36"
Gravity Main
Connect Diversion into
Existing Storm Sewer
770 LF 18"
Gravity Main
1,480 LF 18"
Gravity Main
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"""""""""""""""""""Shannon Pond
Erickson Pond
*2443
2448
2447
0614
6091
2450 2270
0609
3004
3006
3092
2441
Empire Twp.Document Path: K:\015190-000\GIS\Maps\015190-000 Shannon Pond\Alternative 3b Date Saved: 8/18/2020 9:19 AM¯1 inch = 500 feet
0 500
FeetShannon and Wachter Pond Outlets Feasibility Study
WSB Project No. 015190-000
Alternative 3b
""Trunk Storm Sewer
Proposed Force Main
Proposed Gravity
Regional Basins
Major Subwatershed Boundaries
Minor Drainage Area Boundaries
MCES Trunk Effluent Pipe
Proposed Pond
930 LF 24"
Gravity Main
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Appendix
APPENDIX B
COST ESTIMATES
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $200,000.00 1 $200,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 2120 $21,200.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 28000 $420,000.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 18700 $280,500.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 14 $7,000.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 8505 $425,250.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 8505 $595,350.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 1680 $5,040.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 100 $3,000.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $30,000.00 1 $30,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 22 $132,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 118 $826.00
Surface Improvements - Subtotal $2,135,166.00
+ 20% Contingencies $427,030.00
Subtotal $2,562,196.00
+ 30% Indirect Cost $768,660.00
Surface Improvements Total $3,330,856.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 5900 $1,180,000.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 100 $50,000.00
Shannon Pond Outlet Improvements - Subtotal $2,145,000.00
+ 20% Contingencies $429,000.00
Subtotal $2,574,000.00
+ 30% Indirect Cost $772,200.00
Shannon Pond Outlet Improvements - Total $3,346,200.00
D. TRUNK STORM SEWER
22 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
23 2501.602 48" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $15,000.00 6 $90,000.00
24 2503.503 21" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $60.00 5700 $342,000.00
25 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 1480 $103,600.00
26 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
27 2503.503 48" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $175.00 5240 $917,000.00
28 2503.603 30" FORCE MAIN DUCTILE IRON PIPE LIN FT $300.00 5400 $1,620,000.00
29 2506.601 26 CFS LIFT STATION - POND 1990 EACH $900,000.00 1 $900,000.00
30 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 20 $10,000.00
31 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 80 $52,000.00
32 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 72-4020 LIN FT $1,000.00 180 $180,000.00
33 2506.502 CASTING ASSEMBLY EACH $750.00 44 $33,000.00
34 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 70 $5,600.00
35 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 35 $280.00
Trunk Storm Sewer Improvements - Subtotal $4,456,980.00
+ 20% Contingencies $891,400.00
Subtotal $5,348,380.00
+ 30% Indirect Cost $1,604,510.00
Trunk Storm Sewer Improvements - Total $6,952,890.00
TOTAL ALTERNATIVE 1A $15,063,586.00
Alternative 1a: Three Lift Stations (Shannon/Wachter/Business Park Pond)
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $180,000.00 1 $180,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 2200 $22,000.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 8010 $120,150.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 5340 $80,100.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 4 $2,000.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 2450 $122,500.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 2450 $171,500.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 480 $1,440.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 2300 $69,000.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $30,000.00 1 $30,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 30 $180,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $998,590.00
+ 20% Contingencies $199,720.00
Subtotal $1,198,310.00
+ 30% Indirect Cost $359,490.00
Surface Improvements Total $1,557,800.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 5900 $1,180,000.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 100 $50,000.00
Shannon Pond Outlet Improvements - Subtotal $2,145,000.00
+ 20% Contingencies $429,000.00
Subtotal $2,574,000.00
+ 30% Indirect Cost $772,200.00
Shannon Pond Outlet Improvements - Total $3,346,200.00
D. TRUNK STORM SEWER
22 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
23 2501.602 24" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $6,000.00 2 $12,000.00
24 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
25 2501.602 48" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $15,000.00 6 $90,000.00
26 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
27 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 1960 $137,200.00
28 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
29 2503.503 48" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $175.00 9540 $1,669,500.00
30 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 20 $10,000.00
31 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 80 $52,000.00
32 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 72-4020 LIN FT $1,000.00 600 $600,000.00
33 2506.502 CASTING ASSEMBLY EACH $750.00 60 $45,000.00
34 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 82 $6,560.00
35 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 41 $328.00
Trunk Storm Sewer Improvements - Subtotal $2,872,438.00
+ 20% Contingencies $574,490.00
Subtotal $3,446,928.00
+ 30% Indirect Cost $1,034,080.00
Trunk Storm Sewer Improvements - Total $4,481,008.00
TOTAL ALTERNATIVE 1B $10,818,648.00
Alternative 1b: Boulder Trail Trunk Line
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $170,000.00 1 $170,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 350 $3,500.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 7000 $105,000.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 4800 $72,000.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 3.75 $1,875.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 2200 $110,000.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 2200 $154,000.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 425 $1,275.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 350 $10,500.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $12,000.00 1 $12,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 11 $66,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 118 $826.00
Surface Improvements - Subtotal $721,976.00
+ 20% Contingencies $144,400.00
Subtotal $866,376.00
+ 30% Indirect Cost $259,910.00
Surface Improvements Total $1,126,286.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 6000 $1,200,000.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 80 $40,000.00
Shannon Pond Outlet Improvements - Subtotal $2,155,000.00
+ 20% Contingencies $431,000.00
Subtotal $2,586,000.00
+ 30% Indirect Cost $775,800.00
Shannon Pond Outlet Improvements - Total $3,361,800.00
D. TRUNK STORM SEWER
22 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
23 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
24 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 5 $65,000.00
25 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
26 2503.503 21" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $60.00 5700 $342,000.00
27 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 3730 $261,100.00
28 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
29 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 1140 $159,600.00
30 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 110 $55,000.00
31 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 90 $58,500.00
32 2506.502 CASTING ASSEMBLY EACH $750.00 39 $29,250.00
33 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 40 $3,200.00
34 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 20 $160.00
Trunk Storm Sewer Improvements - Subtotal $1,223,660.00
+ 20% Contingencies $244,730.00
Subtotal $1,468,390.00
+ 30% Indirect Cost $440,520.00
Trunk Storm Sewer Improvements - Total $1,908,910.00
TOTAL ALTERNATIVE 1C $7,830,636.00
Alternative 1c: Connection to MCES Interceptor
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $200,000.00 1 $200,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 300 $3,000.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 7500 $112,500.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 5000 $75,000.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 3.75 $1,875.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 2300 $115,000.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 2300 $161,000.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 450 $1,350.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 300 $9,000.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $30,000.00 1 $30,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 30 $180,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $908,625.00
+ 20% Contingencies $181,730.00
Subtotal $1,090,355.00
+ 30% Indirect Cost $327,110.00
Surface Improvements Total $1,417,465.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 6000 $1,200,000.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 80 $40,000.00
Shannon Pond Outlet Improvements - Subtotal $2,155,000.00
+ 20% Contingencies $431,000.00
Subtotal $2,586,000.00
+ 30% Indirect Cost $775,800.00
Shannon Pond Outlet Improvements - Total $3,361,800.00
D. TRUNK STORM SEWER
22 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
23 2501.602 24" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $6,000.00 2 $12,000.00
24 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
25 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 6 $78,000.00
26 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
27 2503.503 21" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $60.00 5700 $342,000.00
28 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 3730 $261,100.00
29 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
30 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 1460 $204,400.00
31 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 130 $65,000.00
32 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 650 $422,500.00
33 2506.502 CASTING ASSEMBLY EACH $750.00 63 $47,250.00
34 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 90 $7,200.00
35 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 45 $360.00
Trunk Storm Sewer Improvements - Subtotal $1,689,660.00
+ 20% Contingencies $337,930.00
Subtotal $2,027,590.00
+ 30% Indirect Cost $608,280.00
Trunk Storm Sewer Improvements - Total $2,635,870.00
TOTAL ALTERNATIVE 2A $8,848,775.00
Alternative 2a: Outfall to the Future UMore Pond
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $200,000.00 1 $200,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 350 $3,500.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 7500 $112,500.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 5000 $75,000.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 3.75 $1,875.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 4300 $215,000.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 4300 $301,000.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 450 $1,350.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 350 $10,500.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $15,000.00 1 $15,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 10 $60,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $1,015,625.00
+ 20% Contingencies $203,130.00
Subtotal $1,218,755.00
+ 30% Indirect Cost $365,630.00
Surface Improvements Total $1,584,385.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 11100 $2,220,000.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 150 $75,000.00
Shannon Pond Outlet Improvements - Subtotal $3,210,000.00
+ 20% Contingencies $642,000.00
Subtotal $3,852,000.00
+ 30% Indirect Cost $1,155,600.00
Shannon Pond Outlet Improvements - Total $5,007,600.00
D. TRUNK STORM SEWER
22 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
23 2501.602 24" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $7,000.00 1 $7,000.00
24 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
25 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 8 $104,000.00
26 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
27 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 480 $33,600.00
28 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
29 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 9540 $1,335,600.00
30 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 20 $10,000.00
31 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 650 $422,500.00
32 2506.502 CASTING ASSEMBLY EACH $750.00 72 $54,000.00
33 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 74 $5,920.00
34 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 37 $296.00
Trunk Storm Sewer Improvements - Subtotal $2,222,766.00
+ 20% Contingencies $444,550.00
Subtotal $2,667,316.00
+ 30% Indirect Cost $800,190.00
Trunk Storm Sewer Improvements - Total $3,467,506.00
TOTAL ALTERNATIVE 2B $11,493,131.00
Alternative 2b: Outfall to Vermillion River Tributary through Empire Township
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $200,000.00 1 $200,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 500 $5,000.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 11100 $166,500.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 7400 $111,000.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 5.75 $2,875.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 5330 $266,500.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 5330 $373,100.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 670 $2,010.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 500 $15,000.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $15,000.00 1 $15,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 10 $60,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $1,236,885.00
+ 20% Contingencies $247,380.00
Subtotal $1,484,265.00
+ 30% Indirect Cost $445,280.00
Surface Improvements Total $1,929,545.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 2000 $400,000.00
19 2506.601 15 CFS LIFT STATION - SHANNON POND EACH $750,000.00 1 $750,000.00
20 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 40 $20,000.00
Shannon Pond Outlet Improvements - Subtotal $1,170,000.00
+ 20% Contingencies $234,000.00
Subtotal $1,404,000.00
+ 30% Indirect Cost $421,200.00
Shannon Pond Outlet Improvements - Total $1,825,200.00
D. TRUNK STORM SEWER
21 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
22 2501.602 24" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $70,000.00 1 $70,000.00
23 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
24 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 8 $104,000.00
25 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
26 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 4500 $315,000.00
27 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
28 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 9540 $1,335,600.00
29 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 20 $10,000.00
30 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 720 $468,000.00
31 2506.502 CASTING ASSEMBLY EACH $750.00 57 $42,750.00
32 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 74 $5,920.00
33 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 37 $296.00
Trunk Storm Sewer Improvements - Subtotal $2,601,416.00
+ 20% Contingencies $520,280.00
Subtotal $3,121,696.00
+ 30% Indirect Cost $936,510.00
Trunk Storm Sewer Improvements - Total $4,058,206.00
TOTAL ALTERNATIVE 2C $9,246,591.00
Alternative 2c: Discharge to East Lake through City of Lakeville
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $180,000.00 1 $180,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 2250 $22,500.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 11000 $165,000.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 7500 $112,500.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 5.5 $2,750.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 3350 $167,500.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 3350 $234,500.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 660 $1,980.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 2250 $67,500.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $30,000.00 1 $30,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 10 $60,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $1,064,130.00
+ 20% Contingencies $212,830.00
Subtotal $1,276,960.00
+ 30% Indirect Cost $383,090.00
Surface Improvements Total $1,660,050.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.603 18" FORCE MAIN DUCTILE IRON PIPE LIN FT $125.00 5900 $737,500.00
19 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
20 2506.601 7 CFS LIFT STATION - SHANNON POND EACH $500,000.00 1 $500,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 100 $50,000.00
Shannon Pond Outlet Improvements - Subtotal $1,452,500.00
+ 20% Contingencies $290,500.00
Subtotal $1,743,000.00
+ 30% Indirect Cost $522,900.00
Shannon Pond Outlet Improvements - Total $2,265,900.00
D. WENSMANN DIVERSION
20 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 2000 $140,000.00
21 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 50 $25,000.00
22 2506.503
CONSTRUCT DRAINAGE SPECIAL STRUCTURE - DIVERSION
STRUCTURE EACH $30,000.00 1 $30,000.00
Shannon Pond Outlet Improvements - Subtotal $165,000.00
+ 20% Contingencies $33,000.00
Subtotal $198,000.00
+ 30% Indirect Cost $59,400.00
Wensmann Diversion Improvements - Total $257,400.00
E. TRUNK STORM SEWER
22 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
23 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
24 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 8 $104,000.00
25 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 2250 $123,750.00
26 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
27 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 9540 $1,335,600.00
28 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 200 $100,000.00
29 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 650 $422,500.00
30 2506.502 CASTING ASSEMBLY EACH $750.00 53 $39,750.00
31 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 68 $5,440.00
32 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 34 $272.00
Trunk Storm Sewer Improvements - Subtotal $2,338,812.00
+ 20% Contingencies $467,760.00
Subtotal $2,806,572.00
+ 30% Indirect Cost $841,970.00
Trunk Storm Sewer Improvements - Total $3,648,542.00
TOTAL ALTERNATIVE 3A $9,265,532.00
Alternative 3a: Wensmann Pond Diversion Structure
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:8/14/2020
Item No.
MnDOT
Specification
No.
Description Unit
Estimated Unit
Price
Estimated Total
Quantity Estimated Total Cost
A. SURFACE IMPROVEMENTS
1 2021.501 MOBILIZATION LUMP SUM $180,000.00 1 $180,000.00
2 2101.501 CLEARING & GRUBBING LUMP SUM $15,000.00 1 $15,000.00
3 2104.503 REMOVE CURB AND GUTTER LIN FT $10.00 300 $3,000.00
4 2104.504 REMOVE BITUMINOUS PAVEMENT SQ YD $15.00 900 $13,500.00
5 2105.522 SELECT GRANULAR BORROW (CV) CU YD $15.00 600 $9,000.00
6 2112.519 SUBGRADE PREPARATION ROAD STA $500.00 0.5 $250.00
7 2211.509 AGGREGATE BASE CLASS 5 (100% CRUSHED) TON $50.00 2250 $112,500.00
8 2360.509 TYPE SP 12.5 NON WEAR COURSE MIX (2:C) TON $70.00 2250 $157,500.00
9 2357.506 BITUMINOUS MATERIAL FOR TACK COAT GALLON $3.00 60 $180.00
10 2531.503 CONCRETE CURB & GUTTER, DESIGN B618 LIN FT $30.00 300 $9,000.00
11 2563.601 TRAFFIC CONTROL LUMP SUM $15,000.00 1 $15,000.00
12 2575.505 SEEDING (INCL TOPSOIL, FERT, MULCH, DISC ANCHOR) ACRE $6,000.00 10 $60,000.00
13 2575.508 SEED MIXTURE 25-141 POUND $7.00 700 $4,900.00
Surface Improvements - Subtotal $579,830.00
+ 20% Contingencies $115,970.00
Subtotal $695,800.00
+ 30% Indirect Cost $208,740.00
Surface Improvements Total $904,540.00
B. WACHTER POND OUTLET
14 2503.603 24" FORCE MAIN DUCTILE IRON PIPE LIN FT $200.00 770 $154,000.00
15 2504.603 36" STEEL CASING PIPE LIN FT $550.00 300 $165,000.00
16 2506.601 10 CFS LIFT STATION - WACHTER POND EACH $600,000.00 1 $600,000.00
17 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 10 $5,000.00
Wachter Pond Outlet Improvements - Subtotal $919,000.00
+ 20% Contingencies $183,800.00
Subtotal $1,102,800.00
+ 30% Indirect Cost $330,840.00
Wachter Pond Outlet Improvements - Total $1,433,640.00
C. SHANNON POND OUTLET
18 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 930 $65,100.00
19 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 20 $10,000.00
Shannon Pond Outlet Improvements - Subtotal $75,100.00
+ 20% Contingencies $15,020.00
Subtotal $90,120.00
+ 30% Indirect Cost $27,040.00
Shannon Pond Outlet Improvements - Total $117,160.00
D. TRUNK STORM SEWER
14 2501.602 18" RC PIPE APRON W/ TRASHGUARD EACH $2,000.00 2 $4,000.00
15 2501.602 24" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $7,000.00 2 $14,000.00
16 2501.602 30" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $10,000.00 1 $10,000.00
17 2501.602 36" RC PIPE APRON W/ TRASHGUARD & SHEET PILE EACH $13,000.00 8 $104,000.00
18 2503.503 18" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $55.00 770 $42,350.00
19 2503.503 24" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $70.00 480 $33,600.00
20 2503.503 30" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $90.00 2150 $193,500.00
21 2503.503 36" RC PIPE SEWER DESIGN 3006 CLASS III LIN FT $140.00 9540 $1,335,600.00
22 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 48-4020 LIN FT $500.00 25 $12,500.00
23 2506.503 CONSTRUCT DRAINAGE STRUCTURE DESIGN 60-4020 LIN FT $650.00 650 $422,500.00
24 2506.502 CASTING ASSEMBLY EACH $750.00 37 $27,750.00
25 2511.507 RANDOM RIPRAP CL IV CU YD $80.00 74 $5,920.00
26 2105.504 GEOTEXTILE FABRIC TYPE IV SQ YD $8.00 37 $296.00
Trunk Storm Sewer Improvements - Subtotal $2,206,016.00
+ 20% Contingencies $441,200.00
Subtotal $2,647,216.00
+ 30% Indirect Cost $794,160.00
Trunk Storm Sewer Improvements - Total $3,441,376.00
TOTAL ALTERNATIVE 3B $5,896,716.00
Alternative 3b: Temporary Pumping
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:10/19/2020
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.9 0.4 1.3
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
54.2 2.3 56.5
+ 20% Contingencies 10.8 0.5 11.3
65.1 2.7 67.8
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.9 0.4 1.3
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
Easement 54.2 2.3 56.5
+ 20% Contingencies 10.8 0.5 11.3
Total Easement 65.1 2.7 67.8
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.0 0.0 0.0
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
0.0 0.0 0.0
Easement 53.4 1.8 55.2
+ 20% Contingencies 10.7 0.4 11.0
Total Easement 64.0 2.2 66.2
Pond 2164 to Pond 2187
Pond 2164 to Pond 2187
East of Hwy 3 to Pond 2274
Estimated Required Easement
Alternative 1c
Location
Pond 2274 to Pond 2164
Pond 2187
Alternative 1a
Pond 2164
Location
Pond 2274 to Pond 2164
Pond 2187
Shannon Pond to West of Hwy 3
Pond 2274
Pond 2274 to Pond 2164
Pond 2164
Pond 2164 to Pond 2187
Pond 2187
East of Hwy 3 to Pond 2274
Pond 2187 to MCES Interceptor
Shannon Pond to MCES Interceptor
East of Hwy 3 to Pond 2274
Pond 2274
Pond 2274
Easement
Total Easement
Pond 2164
Alternative 1b
Location
Shannon Pond to West of Hwy 3
WSB Project:Shannon and Wachter Pond Outlets Feasibility Study Design By:KJF
Project Location:City of Rosemount Checked By:WCA
WSB Project No:015190-000 Date:10/19/2020
Estimated Required Easement
Alternative 1a
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.8 0.4 1.2
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
54.2 2.2 56.4
+ 20% Contingencies 10.8 0.4 11.3
65.0 2.7 67.7
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.0 0.0 0.0
1.6 0.8 2.4
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
Easement 55.0 2.6 57.6
+ 20% Contingencies 11.0 0.5 11.5
Total Easement 65.9 3.2 69.1
Permanent
Easement (Acres)
Temporary
Easement (Acres)
Total Easement
(Acres)
0.0 0.0 0.0
3.0 1.3 4.3
40.9 0 40.9
0.5 0.2 0.7
7.8 0 7.8
0.5 0.3 0.8
0.7 0.0 0.7
Easement 53.4 1.8 55.2
+ 20% Contingencies 10.7 0.4 11.0
Total Easement 64.0 2.2 66.2
East of Hwy 3 to Pond 2274
Pond 2164 to Pond 2187
Pond 2187
East of Hwy 3 to Pond 2274
Alternative 2a
Location
Shannon Pond to East Lake
Biscayne Avenue to Vermillion River
Pond 2164 to Pond 2187
Pond 2187
East of Hwy 3 to Pond 2274
Pond 2164 to Pond 2187
Pond 2187
Pond 2274
Pond 2274 to Pond 2164
Pond 2164
Alternative 2c
Location
Easement
Pond 2274
Pond 2274 to Pond 2164
Alternative 2b
Location
Pond 2164
Shannon Pond to Biscayne Avenue
Total Easement
Pond 2164
Pond 2274
Pond 2274 to Pond 2164
Shannon Pond to 2162
Shannon and Wachter Pond Outlets Feasibility Report
City of Rosemount, MN
WSB Project No. 015190-000 Appendix
APPENDIX C
DWSMA AND UMORE RECLAMATION PLANS
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G¥WXApple ValleyRosemountCoatesRosemount
C ottageG ro ve
R osem ountEaganRosemount
Empire Twp.Rosemount Inver GroveHeightsInver Grove HeightsRosemount
Nininger Twp.RosemountRosemountVermillion Twp.
Document Path: K:\011824-000\GIS\Maps\Fig8_DWSMA.mxd Date Saved: 8/23/2018 1:18:40 PM
Legend
Rosemount Supply Wells
Emergency Response Areas
Rosemount Boundary
Wellhead Protection Areas
DWSMA Vulnerability
High
Moderate
Low
Figure 8 - Drinking WaterSupply Management Areas
City of RosemountSurface Water Management Plan
0 4,000Feet¯1 inch = 4,000 feet