2021 Metro Mississippi East Ramsey-Washington Metro WD
The Target North St. Paul Stormwater Retrofit project will target phosphorus removal from stormwater runoff. This runoff receives limited treatment before discharging to Kohlman Creek, a waterbody impaired for excess nutrients. This project is one of many efforts RWMWD has undertaken to improve the water quality of Kohlman Lake and the downstream waterbodies. The Ramsey-Washington Metro Watershed District (RWMWD) is responsible for the protection and restoration of the water quality of 20 lakes and 5 creeks within its boundary. Permit and voluntary cost share programs serve to slowly redevelop the watershed to the benefit of these water bodies. However, additional projects are needed, not only to help meet water quality goals but to implement green infrastructure in areas that need extra restoration and protection. This effort results in one of those projects and also works with a large commercial property in the creation of future stewards of the watershed district that can help to carry on RWMWD?s mission and promote its work. RWMWD is proposing to install 2 tree trench systems and 5 rain gardens and will remove about 40 parking stalls (a reduction of 6,675 sf in impervious area). This project will help reduce stormwater runoff volumes by 16,958 cubic ft, total suspended solid loads by 1,142 pounds per year, and phosphorus loads by 6 pounds per year to Kohlman Creek.
http://www.bwsr.state.mn.us/board
http://www.bwsr.state.mn.us/board
Annie Felix-Gerth
(a) $21,197,000 the first year and $22,367,000 the second year are for performance-based grants with multiyear implementation plans to local government units. The grants may be used to implement projects that protect, enhance, and restore surface water quality in lakes, rivers, and streams; protect groundwater from degradation; and protect drinking water sources. Projects must be identified in a comprehensive watershed plan developed under the One Watershed, One Plan and seven-county metropolitan groundwater or surface water management frameworks as provided for in Minnesota Statutes, chapters 103B, 103C, 103D, and 114D. Grant recipients must identify a nonstate match and may use other legacy funds to supplement projects funded under this paragraph. This appropriation may be used for:
This project will result in a Retrofit 2 tree trench systems and 5 raingardens in a commercial parking lot that will treat stormwater runoff before discharging to Kohlman Creek. The practices will annually reduce the volume of stormwater runoff discharging from the parking lot by 16,958 cubic feet (0.34 acre-feet) and capture 1,142 pounds (0.57 tons) of total suspended solids and 6.2 pounds of phosphorous annually. The retrofit will also provide a reduction in impervious surfaces by 6,675 square feet (~40 parking stalls).
This project has resulted by Installing 2 tree trench systems and 4 raingardens to treat stormwater runoff from 36% (4 acres) of the parking lot area. The practices provided a reduction in the volume of stormwater runoff discharging from the site by 191,228 cubic feet (4.39 acre-feet) annually and capture 6.2 pounds of phosphorous and 1,142 pounds (0.57 tons) of total suspended solids each year. 50 parking stalls were eliminated to construct the practices. One less raingarden was installed than originally proposed due to site constraints in final design, however, the pollution reduction goals for the grant were achieved/exceeded.
LOCAL LEVERAGED FUNDS