Efficient, Effective, Responsive Authorization To Amend 2019 Parks Capital Improvement Program Budget For Minnesota Board Of Water And Soil Resources Grant For Lebanon Hills Regional Park Chain Of Lakes Improvement Projects Mike Behan – Water Resources Environmental Resources Department Physical Development Division 2/26/2019
Overview Efficient, Effective, Responsive • Background • State of the Lakes • Phosphorus Sources and Reduction Goals • Scope of Current Projects • Future Potential Projects • Requested Actions • Questions/Comments
Background Efficient, Effective, Responsive • Lebanon Hills Regional Park (LHRP) has abundant water resources • 2001 “Superstorm” • Significant investments in flood relief infrastructure • Water quantity issues addressed • Interest in water quality has increased • LHRP Master Plan (2015) recommended lake study
State of the Lakes Efficient, Effective, Responsive 2017 Phosphorus Concentrations P Concentration (ug/L) • LHRP lakes not currently Shallow Lake Standard Deep Lake impaired Standard • Plan to restore Schulze, McDonough, Jensen lakes, 2017 Chlorophyll-a Concentrations provide protection for others Chl-a Concentration (ug/L) Shallow Lake Deep Lake Standard Standard
Phosphorus Sources Efficient, Effective, Responsive • Phosphorus runoff impacts water quality • Annually enters lakes from upstream Phosphorus Loading By Source sources Phosphorus Load (lbs/yr) • Leaches from lake bottom sediments • Sampling and modeling identify priority sources • Projects prioritized based on source and cost-effectiveness
Phosphorus Reduction Goals Efficient, Effective, Responsive Description Jensen O’Brien Schulze McDonough Holland Current Meeting Meeting Not Meeting Not Meeting Meeting Status Target Target Target Target Target Phosphorus Load Reduction Goal 10% 5% 32% 25% 5% [ percent] Phosphorus Load Reduction Goal 7 2 14 22 2 [ lbs/ yr]
Scope of Projects Efficient, Effective, Responsive Two Iron-Enhanced Sand Filters Jensen Lake ( 100% of goal) • – Also provides benefits to downstream McDonough Lake Schulze Lake ( 30% of goal) • BWSR Grant $267,000 Parks CIP $66,750 Total Cost $333,750 Aluminum sulfate injection treatment • Schulze Lake ( Remaining 70% of goal) – Separate project funded through the Eagan-Inver Grove Heights Watershed Management Organization (E-IGHWMO). JPA to be presented for County Board consideration in April 2019. E-IGHWMO Grant $30,000 Parks CIP $30,000 Total Cost $60,000
Future Projects Efficient, Effective, Responsive • Work with MN DNR for fish stocking in McDonough and Schulze lakes • Evaluate needs for remaining projects • Annual lake monitoring • Effectiveness monitoring of installed projects • Perform maintenance of installed projects (as-needed)
Requested Action Efficient, Effective, Responsive Authorization To Amend 2019 Parks Capital Improvement Program Budget For Minnesota Board Of Water And Soil Resources Grant For Lebanon Hills Regional Park Chain Of Lakes Improvement Projects
Efficient, Effective, Responsive Questions?
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