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Hopkins – St. Louis Park – Minneapolis Regional Sanitary Sewer Improvements Draft Facility Plan January 20, 2010

Metropolitan Council Public Information Meeting. Hopkins – St. Louis Park – Minneapolis Regional Sanitary Sewer Improvements Draft Facility Plan January 20, 2010. Introductions. Bill Moeller – MCES Assistant General Manager Bill Cook – MCES Engineering Services Manager

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Hopkins – St. Louis Park – Minneapolis Regional Sanitary Sewer Improvements Draft Facility Plan January 20, 2010

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  1. Metropolitan Council Public Information Meeting Hopkins – St. Louis Park – Minneapolis Regional Sanitary Sewer Improvements Draft Facility Plan January 20, 2010

  2. Introductions • Bill Moeller – MCES Assistant General Manager • Bill Cook – MCES Engineering Services Manager • Scott Dentz – MCES Interceptor Engineering Manager • Adam Gordon – MCES Project Manager • Tim O’Donnell – MCES Senior Information Coordinator

  3. Bill Lueck – Project Manager, CDM consulting engineers Jodi Polzin – Project Manager, CDM consulting engineers

  4. Agenda 1. Overview of Regional Wastewater System 2. Overview of Project Facility Plan • Existing Facilities and Conditions • Alternatives • Recommendations and Schedule • Public Participation 3. Question & Answer/Open House

  5. Regional Wastewater System

  6. Definitions Conveyance – Facilities used to move wastewater (includes pumps, pipes and sewers) Force main – A pressure pipe in which wastewater is conveyed with the use of pumps (pump station) Gravity sewer – A pipe that is constructed with a continuous drop in elevation to convey flow Temporary conveyance – A temporary wastewater conveyance pipe typically run above ground and permits the existing pipe to be drained, cleaned, inspected, and repaired Interceptor – A force main or gravity sewer that intercepts wastewater from multiple communities and conveys it to one of the regional wastewater treatment plants.

  7. The Purpose of the Project • Increase pumping station capacity to accommodate growth and improve efficiency • Correct known problems • Construct redundant facilities to allow condition assessment and repair

  8. Existing System MCES L27 Pump Station Constructed in 1971 Receives all wastewater generated in Hopkins MCES 7026 Sanitary Force Main Five mile long force main between L27 and 27th Street and Humboldt Avenue South in Minneapolis City Pump Stations Three pump stations serving nearly 20% of St. Louis Park One pump station serving an area near Lake of the Isles in Minneapolis

  9. Overview of Existing System

  10. Community Flows

  11. Existing Facilities Assessment • The L-27 lift station has reached its useful life expectancy and maintenance issues in conjunction with the need to increase its capacity warrant consideration of replacement. • Age, operatingconditions, unknown pipe condition, and previous repairs warrant improvements to force main 7026.

  12. Facility Plan Goals • Recommend Interceptor Sewer Corridor • Identify Type of Interceptor Sewer Facilities (Pumping/Gravity) • Evaluate Alternative Sites for Pump Station Location • Develop a Plan for Interceptor Sewer Construction

  13. To 1-MN-341 via Force Main • Insufficient Capacity • Not Considered Further 2) To 1-MN-344 via Force Main • Third Highest Cost 1) To Blue Lake WWTP via Force Main • Second Highest Cost • Capacity Reserved for Existing Service Area Alternative Corridors 1-MN-330 1-MN-344 To Blue Lake WWTP

  14. Alternative Corridors • 5) To 1-MN-330 via Force Main • Lowest Cost • Least Disruption • No Redirection of Local Connections 4) To 1-MN-330 via Gravity • Highest Cost • Most Disruption • Most Difficult Construction • No Redirection of Local Connections 1-MN-330 1-MN-344 To Blue Lake WWTP

  15. Force Main Improvement Alternatives

  16. Recommended Plan for Minnehaha Creek and Saint Louis Park West Segments Phase II Line Portions of Existing Force Main Phase IInstall New Force Main Phase IInstall 2 New Force Mains

  17. Recommended Plan for Highway 100 and Saint Louis Park East Segments Phase IConstruct New Force Main Phase IILine Portions of Existing Force Main

  18. Goals For Minneapolis Segment Provide short term assurance that the interceptor system is providing reliable service • Replace previously repaired sections of force main • Relocate inaccessible force main • Reline remaining force main • Install a redundant force main

  19. Existing Force Main

  20. Temporary Conveyance

  21. Recommended Plan - Minneapolis Segment: PHASE I Install New Force Main Abandon Force Main Reline Remaining Force Main New Force Main Rehabilitated Force Main Abandoned Force Main

  22. Recommended Plan - Minneapolis Segment: PHASE 2 New Force Main Existing Force Main

  23. Summary of L27 Site Criteria Cost Effective Available Property Site Compatibility Land Use Adjacent Land Use Environmental Issues Flood Plain and Wetland Proximity Environmental Contamination Recreational Impact Transportation Disruption

  24. L-27 Alternative Sites

  25. L-27 Recommendation: Reconstruct at Existing Location Lowest Cost for Full Replacement Options Existing Infrastructure Conveys Hopkins Wastewater to this Location MCES Currently Owns and Operates Existing Site as a Pump Station

  26. L-27 Replacement

  27. Head House Wet Well Tunnel City Suggested Site For L-27

  28. Project Construction Schedule

  29. Cost Summary The estimated cost includes construction cost, design and administration, land acquisition, and contingencies.

  30. Funding • Metropolitan Council projects are funded by bonds and Public Facilities Authority Loans, which are paid by regional sewer connection fees & user charges. • One-time increase of $150.01 per unit for new connection to sewer system (SAC) • $1.35 increase per year per household region-wide for 20 years (based on average annual water usage) • No assessment by Metropolitan Council

  31. Public Participation • Copies of Draft Facility Plan available for review • Hopkins City Hall • Hopkins Library • St. Louis Park City Hall • St. Louis Park Library • Kenwood Community Center • Metropolitan Council’s Data Center • Three Public Information Meetings • Public Hearing • Comments will be incorporated into the Final Facility Plan.

  32. Facility Plan Schedule • Written comments 02/08/2010 due no later than • Full Metropolitan Council 02/24/2010 Approval • Submit Facility Plan to MPCA 03/01/2010 • MPCA Public Notice of EAW to followFacility Plan Approval

  33. Public Comments • Submit comments no later than February 8, 2010. • Submit comments to Tim O’Donnell, MCES Senior Information Coordinator, by: • Email comments to: data.center@metc.state.mn.us • Send written comments to: Tim O’Donnell at Metropolitan Council Environmental Services, 390 Robert Street North, St. Paul, MN 55101 • Fax comments to Tim O’Donnell at 651-602-1477 • Record comments on Metropolitan Council Public Comment Line at 651-602-1500 • Send TTY comments to 651-291-0904

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