FEASIBILITY REPORT. 65 th STREET TRUNK WATER MAIN IMPROVEMENTS INVER GROVE HEIGHTS MINNESOTA DAKOTA COUNTY. October 2, 2017

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1 FEASIBILITY REPORT 65 th STREET TRUNK WATER MAIN IMPROVEMENTS INVER GROVE HEIGHTS MINNESOTA DAKOTA COUNTY October 2, 2017 Prepared for: City of Inver Grove Heights 8150 Barbara Avenue Inver Grove Heights, MN CITY PROJECT NO WSB PROJECT NO

2 FEASIBILITY REPORT 65 TH STREET TRUNK WATER MAIN IMPROVEMENTS CITY PROJECT NO FOR THE CITY OF INVER GROVE HEIGHTS, MINNESOTA October 2, 2017 Prepared By: WSB & Associates, Inc. 701 Xenia Avenue South, Suite 300 Minneapolis, MN (Fax) 65 th Street Improvements City of Inver Grove Heights Project No WSB Project No

55077 Re: City Project No. 2017-03 City of Inver Grove Heights, MN WSB Project No.

3 October 2, 2017 Building a legacy your legacy. 701 Xenia Avenue South Suite 300 Minneapolis, MN Tel: Fax: Honorable Mayor and City Council City of Inver Grove Heights 8150 Barbara Avenue Inver Grove Heights, MN Re: City Project No City of Inver Grove Heights, MN WSB Project No Dear Honorable Mayor and City Council Members: The following is a feasibility report which addresses trunk water main improvements for the 65 th Street Trunk Water Main Improvement Project in the City of Inver Grove Heights. The proposed trunk water main would ultimately provide connectivity between the existing trunk watermain along TH 3 and the existing trunk watermain located at the Blackstone Ridge Development adjacent to future 65 th Street. We would be happy to discuss this report with you at your convenience. Please call me at if you have any questions. Sincerely, WSB & Associates, Inc. Brad Reifsteck, PE Project Manager Enclosure Equal Opportunity Employer wsbeng.com

4 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. Brad Reifsteck, PE Date: October 2, 2017 Lic. No Quality Control Review Completed By: James Soltis, Date: October 2, 2017 Lic. No City of Inver Grove Heights Project No WSB Project No

5 TABLE OF CONTENTS TITLE SHEET LETTER OF TRANSMITTAL CERTIFICATION SHEET TABLE OF CONTENTS 1. EXECUTIVE SUMMARY INTRODUCTION Authorization Scope Data Available BACKGROUND Collector Roadway PROPOSED IMPROVEMENTS th Street Trunk Water Main Permits/Approvals FINANCING Opinion of Probable Project Cost Funding PROJECT SCHEDULE FEASIBILITY AND RECOMMENDATION... 7 APPENDIX A Project Location Map Watermain Improvements Map APPENDIX B Opinion of Probable Cost City of Inver Grove Heights Project No WSB Project No

6 1. EXECUTIVE SUMMARY The city just recently completed the construction of the Northwest Area (NWA) Trunk Watermain 65 th Street Loop ending just north of the future intersection of 65 th Street and Trunk Highway 3 as part of City Project No As new and future developments occur in this area, completing the 65 th Street Loop trunk watermain is vital to these new neighborhoods and the entire NWA. A project location map for proposed water main can be found in Appendix A. The proposed 16-inch trunk water main would be extended south along TH 3 to the future 65 th Street intersection as shown in Exhibit A1.1 in Appendix A. From this point, the water main extends to the west approximately 900 feet and terminates just west of the common parcel line between Windwood 2 nd Addition and the Dalsin parcel. Ultimately the connectivity will be made between the existing trunk water main along 65 th Street and one located at the Blackstone Ridge Development adjacent to future 65 th Street. In addition, strategic hydrants, valves and stubs will be placed along its alignment to accommodate any future developments east or west of Trunk Highway 3. It is anticipated for this project to be completed during the 2018 construction season. The estimated project costs are prepared and include a 10% contingency and 28% indirect for legal, engineering, administrative, and financing. Land acquisition will be required to complete the installation of the trunk watermain. The total project costs including land acquisition for this project is estimated at $1,652,056. This project will be funded using the NWA Water Main Fund and NWA Storm Water Fund. The proposed project is feasible, necessary, and cost-effective from an engineering standpoint. It is our recommendation that the improvements be implemented as outlined in this report. City of Inver Grove Heights Project No WSB Project No Page 1

7 2. INTRODUCTION 2.1 Authorization On September 25, 2017, the City of Inver Grove Heights Council authorized the preparation of a feasibility report for the 65 th Street Trunk Water Main Improvement Project. This project is included in the City s Capital Improvement Program and has been designated as City Project No Scope This report includes Trunk Water Main improvements along TH 3 and future 65 th Street. A project location map can be found in Appendix A of this report. 2.3 Data Available Information and materials used in the preparation of this report include the following: Field Observations of the area and discussions with City staff and other agencies Northwest Area Collector Street Plan final report LiDAR Elevation Data City of Inver Grove Heights 2030 Comprehensive Plan Update, 2010 Feasibility Study for City Project No prepared by WSB & Associates, Inc. Feasibility Study for City Project No prepared by Bolten & Menk, Inc. Development Plans prepared by Sathre-Berquist, Inc. and Agreements for the Blackstone Ridge Development prepared by the City Attorney, Approved by the City Engineer, Development Plans prepared by Pioneer Engineering and Agreement for the Windwood 2 nd Addition Development prepared by the City Attorney, approved by the City Engineer City of Inver Grove Heights Project No WSB Project No Page 2

8 3. BACKGROUND 3.1 Trunk Watermain The City just recently completed the phase of the 65 th Street Loop trunk watermain extension between Babcock Trail and Trunk Highway 3, City Project No This report examines the feasibility of extending the 65 th Street Loop from its current termini south along Trunk Highway 3, then west along future 65 th Street alignment. This segment will provide better flow and fire protection as developments occur and further extend the existing trunk watermain in anticipation of completing the Argenta District watermain loop in the future, and trunk watermain improvements in the Robert District as constructed in the Blackstone Ridge Development. A feasibility report that examines the Trunk Highway 3 Roadway Improvements for 65 th Street Project (City Project No ) was approved by City Council on September 25. This report evaluates the roadway design necessary to improve the intersection at TH 3 and future 65 th Street. The intersection at 65 th street and TH 3 will be lowered substantially and will greatly impact the trunk watermain design along future 65 th Street. Final design and construction of the trunk watermain extension will be completed in conjunction with the Trunk Highway 3 Roadway Improvements. City of Inver Grove Heights Project No WSB Project No Page 3

9 4. PROPOSED IMPROVEMENTS th Street Trunk Water Main The roadway connection along Trunk Highway 3 at the intersection of future 65 th Street has been identified by the City as Trunk Highway 3 Roadway Improvements for 65 th Street Project, City Project No , and is currently under study. This project will require a massive amount of earthwork along TH 3 to meet state aid design standards and will prepare for the new intersection at 65 th Street. Excess grading materials generated from the TH 3 construction will be used to stabilize the subgrade along future 65 th street and prepare for the completion of the trunk water main further west to Argenta Trail. This will allow the trunk watermain to follow minimum bury depths along 65 th Street. The proposed watermain will be a 16-inch diameter pipe that will serve future developments along 65 th Street as they occur. The proposed watermain will connect to an existing 16-inch watermain along Trunk Highway 3, just north of the future intersection of 65 th Street. From here the watermain will head south along TH 3 to the future 65 th Street intersection and extend west past the Dalsin s west parcel line as shown in Exhibit A1.1 in Appendix A. In addition, a water main connection will be made at the access road into Windwood 2 nd Addition and a 16-inch stub will be extended east across TH3 in preparation for any future development. It is anticipated that easements will need to be acquired to complete the extension of the watermain along 65 th Street near the Source Land Capital parcel. Permanent and Temporary easements are necessary to maintain and construct the new main. Easement documents will be prepared to acquire the easements. As mentioned above, grading of the project area will be necessary to facilitate the installation of the water main at the minimum bury depths. All hydrants, valves and stubs will follow city engineering and fire policy and be strategically placed to facilitate future developments. 4.2 Permits/Approvals This project is anticipated to disturb more than one acre; and therefore, National Pollution Discharge Elimination System (NPDES) permits will be required. Permits for work within the right-of-way (ROW) will be required from MnDOT along State Trunk Highway 3 (Robert Trail South). A permit from the Minnesota Department of Health will be required to facilitate water main installation. City of Inver Grove Heights Project No WSB Project No Page 4

10 5. FINANCING 5.1 Opinion of Probable Project Cost A detailed breakdown of the cost opinion for the proposed project can be found in Appendix B of this report. The opinion of cost incorporates estimated 2018 construction costs and includes a ten percent contingency factor. Indirect costs are projected at twenty-eight percent of the estimated construction costs and include legal, engineering, administrative, and financing. A breakdown of costs for each phase is shown in Table 5.1 below. Table th Street Trunk Water Main Improvement Project Cost Description Total Schedule A Trunk Watermain Extension $1,403,800 Schedule B Drainage Improvements $21,400 TOTAL COST $1,425,200 Land values were estimated from similar projects in the City of Inver Grove Heights to determine property acquisition costs. The permanent ROW, Permanent Easements (PE) and Temporary Easements (TE) are needed along the Source Land Capital Parcel and limits were determined based upon the preliminary design for the Trunk Highway 3 Roadway Improvements for 65 th Street Project and 65 th Street Trunk Watermain Improvements. The breakdown of costs for property acquisition is shown in Table 5.2 below. Table 5.2 Property Acquisition Cost ABRV Description Area [SF] $ / SF Total Cost ROW Permanent Right-Of- Way 70,713 $2.00 $141,426 PE Permanent Trail, Drainage & Utility Easements 19,630 $2.00 $39,260 TE Temporary Construction Easements 46,170 $1.00 $46,170 TOTAL COST $226,856 The total project cost including property acquisition is estimated at $1,652, Funding The trunk watermain improvements will be funded from the NWA Water Fund 511 and the NWA Storm Water Fund 448. Revenues for the funds are generated by the plat connection charges, building permit connection fees and Developer Funds collected in the NWA. No assessment roll has been prepared at this time. City of Inver Grove Heights Project No WSB Project No Page 5

11 6. PROJECT SCHEDULE The project schedule assumes the ROW acquisition and other planned public utilities for this area are nearly complete and the project is ready to move into the preliminary and final design phases. The proposed project schedule for the 65 th Street Trunk Water Main Improvement Project is as follows: Order... September 25, 2017 Accept /Set Public Hearing... October 9, 2017 Public Hearing/Order Project... November 13, 2017 Open Bids... February 2018 Award Contract... March 2018 Estimated Begin Construction... June 2018 Estimated Substantial Completion...October 2018 City of Inver Grove Heights Project No WSB Project No Page 6

12 7. FEASIBILITY AND RECOMMENDATION The 65 th Street Trunk Water Main Improvement Project includes a new trunk water main connection between future 65 th Street and Robert Trail South (TH 3) in the Northwest Area of the City of Inver Grove Heights. Project improvement costs are anticipated to be approximately $1,652,056. Proposed funding for the project is provided through the NWA Water Fund 511 and the NWA Storm Water Fund 448. The proposed project is feasible, necessary, and cost-effective from an engineering standpoint. It is our recommendation that the improvements be implemented as outlined in this report. City of Inver Grove Heights Project No WSB Project No Page 7

13 APPENDIX A Project Location Map Watermain Improvements Map City of Inver Grove Heights Project No. No WSB Project No Appendix

14 SOURCE LAND CAPITAL LLC DALSIN ROBERT M & BARBARA D Robert Tr S MIHM THOMAS C & INEZ A Inver Grove Heights Feet 400 Project Location Inver Grove Heights, MN - 65th Street Trunk Watermain Improvements Location Map Feasibility Study Figure A1.0 K:\ \GIS\Maps\Location_Map.mxd -

15 WILLIAM & CYNTHIA NICHOLS SOURCE LAND CAPITAL LLC Robert Tr S STUB TO FUTURE DEVELOPMENT THOMAS L PELTIER DALSIN ROBERT M & BARBARA D WINDWOOD 2ND ADDITION Legend CONNECT TO EXISTING WM Feet 200 Watermain Steel Casing Pipe Hydrant Existing Watermain Gate Valve Existing Hydrant Plug Existing Gate Valve - THOMAS & DEBORAH LUND InverHeights, Grove Heights, MN - 65th Street Improvements Inver Grove MN - 65th Street Trunk Watermain Improvements Location Map 1.1 Watermain Location Map Feasibility Feasibility Study Study Figure FigureAA1.0 K:\ \GIS\Maps\WATERMAIN_MAP.mxd Inver Grove Heights

16 APPENDIX B Opinion of Probable Cost City of Inver Grove Heights Project No. No WSB Project No Appendix

17 WSB Project: TRUNK WATERMAIN EXTENSION Design By: GCT Project Location: INVER GROVE HEIGHTS Checked By: BAR City Project No.: WSB Project No: Date: 9/20/2017 Item No. MN/DOT Specification No. Description A. TRUNK WM EXTENSION Opinion of Probable Cost Unit Estimated Total Quantity Estimated Unit Price Estimated Total Cost AS BUILT LUMP SUM 0.2 $1, $ MOBILIZATION LUMP SUM 0.2 $225, $53, FIELD OFFICE TYPE D-MODIFIED EACH 0.2 $30, $7, FIELD LABORATORY TYPE D EACH 0.2 $15, $3, CLEARING ACRE 2.7 $5, $14, GRUBBING ACRE 2.7 $5, $14, COMMON EXCAVATION CU YD $9.00 $179, SUBGRADE EXCAVATION CU YD $13.00 $20, SELECT GRANULAR BORROW (CV) CU YD $15.00 $48, SELECT GRANULAR BORROW MOD 10% (CV) CU YD $21.00 $66, AGGREGATE SURFACING (CV) CLASS 5 CU YD $40.00 $11, WATER M GALLON 10.0 $28.00 $ ORNAMENTAL METAL RAILING LIN FT 211 $ $42, STRUCTURE EXCAVATION CLASS U CU YD 3164 $9.00 $28, MODULAR BLOCK RETAINING WALL SPECIAL SQ YD 253 $ $101, ANTI-GRAFFITI COATING SQ FT 2270 $1.50 $3, ARCHITECTURAL SURFACE FINISH (MULTI COLOR) SQ FT 2270 $4.00 $9, CONNECT TO EXISTING WATER MAIN EACH 1 $1, $1, HYDRANT EACH 4 $4, $19, " GATE VALVE AND BOX EACH 2 $4, $9, " WATERMAIN HDPE LIN FT 1090 $ $152, DUCTILE IRON FITTINGS POUND 1170 $13.00 $15, TRAFFIC CONTROL SUPERVISOR LUMP SUM 0.24 $20, $4, TRAFFIC CONTROL LUMP SUM 0.24 $45, $10, SILT FENCE, TYPE SD LIN FT 381 $35.00 $13, SILT FENCE, TYPE MS LIN FT 2292 $2.20 $5, TEMPORARY SLOPE DRAIN LIN FT 11 $25.00 $ SEDIMENT CONTROL LOG TYPE WOOD FIBER LIN FT 498 $3.80 $1, EROSION CONTROL SUPERVISOR LUMP SUM 0.24 $10, $2, FERTILIZER TYPE 3 POUND 531 $1.00 $ FERTILIZER TYPE 4 POUND 50 $1.20 $ COMMON TOPSOIL BORROW CU YD 1748 $32.00 $55, SEEDING ACRE 4.7 $ $1, SEED MIXTURE POUND 54 $26.00 $1, SEED MIXTURE POUND 100 $24.00 $2, MULCH MATERIAL TYPE 3 TON 1 $ $ MULCH MATERIAL TYPE 4 SQ YD 2008 $1.00 $2, HYDRAULIC BONDED FIBER MATRIX POUND $1.30 $26, RAPID STABILIZATION METHOD 4 SQ YD 139 $4.00 $556 CONSTRUCTION SUBTOTAL $933,010 CONTINGENCY TOTAL (10%) $93,301 CONSTRUCTION TOTAL $1,026,311 INDIRECT COST TOTAL (28%) $287,367 SUBTOTAL PROJECT COST - SCHEDULE A. TRUNK WM EXTENSION $1,313,700 K:\ \Quantity\Preliminary\OPC TRUNK HW 3 WM EXTEN

18 WSB Project: TRUNK WATERMAIN EXTENSION Design By: GCT Project Location: INVER GROVE HEIGHTS Checked By: BAR City Project No.: WSB Project No: Date: 9/20/2017 Item No. MN/DOT Specification No. Description A. B. TRUNK DRAINAGE WM IMPROVEMENTS EXTENSION Opinion of Probable Cost Unit Estimated Total Quantity Estimated Unit Price Estimated Total Cost AS BUILT LUMP SUM $1, $ MOBILIZATION LUMP SUM $225, $ FIELD OFFICE TYPE D-MODIFIED EACH $30, $ FIELD LABORATORY TYPE D EACH $15, $ GUIDE POST TYPE B EACH 1 $60.00 $ TRAFFIC CONTROL SUPERVISOR LUMP SUM $20, $ TRAFFIC CONTROL LUMP SUM $45, $ EROSION CONTROL SUPERVISOR LUMP SUM $10, $ " RC PIPE SEWER DESIGN 3006 LIN FT $45.00 $6, CONSTRUCT DRAINAGE STRUCTURE DESIGN LIN FT $ $7, EXCAVATION SPECIAL 2 CU YD $13.00 $63, " RC PIPE APRON EACH 1.00 $ $600 CONSTRUCTION SUBTOTAL $79,120 CONTINGENCY TOTAL (10%) $7,912 CONSTRUCTION TOTAL $87,032 INDIRECT COST TOTAL (28%) $24,369 SUBTOTAL PROJECT COST - SCHEDULE B. DRAINAGE IMPROVEMENTS $111,500 GRAND TOTAL PROJECT COST - SCHEDULES A+ B $1,425,200 K:\ \Quantity\Preliminary\OPC TRUNK HW 3 WM EXTEN

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