Becker Park Infiltration Project
Projects and Practices 2016: Laws of MN 2015 First Special Session Chapter 2, Article 7, Section 7
This project addresses phosphorus in urban runoff by reducing the volume of runoff discharging downstream to the impaired lakes. HydroCAD and P8 were used to estimate an annual load reduction of 118 lbs/year of phosphorus and 38,400 lbs/TSS, as well as an annual volume reduction of 108 acre-feet per year. The reduction of the TMDL-required Upper Twin Lake total phosphorus reduction is 16% of the TMDL-required Upper Twin Lake TP reduction of 741 lbs/year.
LOCAL LEVERAGED FUNDS
Installation of a 43,000 sf infiltration gallery in Becker Park in the City of Crystal to infiltrate 0.5 inches of runoff from a 147 acre currently untreated mixed use subwatershed with 51% impervious surface. The project will reduce total phosphorus to Impaired Water Upper Twin Lake by 118 pounds annually, and reduce street flooding on Bass Lake Road (Hennepin County Road 10).