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19 <br />of the ten-day snowmelt event is not required for stormwater management detention <br />basins with a defined outlet elevation at or below the 100-year, 24-hour event elevation. <br />(5) Water quality treatment. The City Adopts by reference RCWD Rule C6. Water <br />Quality Treatment as amended. <br />(e) Land development activities creating impervious surface shall address the <br />use of better site design (BSD) techniques as outlined in the better site design and low <br />impact development sections of the Minnesota Stormwater Manual (MPCA, 2014 and <br />subsequent revisions). <br />(f) The water quality treatment volume standard for all projects, except public <br />linear projects, is determined as follows (Table 2): <br />Table 2. Required quality volume calculations for new or reconstructed <br />developments <br />BMP BMP Design <br />Variation <br />Water Treatment Volume <br />Calculation [ft3] <br />Infiltration Infiltration <br />Feature <br />Impervious surface [ft2] * 1.1 [in] /12 <br />[in/ft] <br />Water Reuse Irrigation Impervious surface [ft2] * 1.1 [in] / 12 <br />[in/ft] <br />Biofiltration Underdrain Impervious surface [ft2] * 1.1 [in] / <br />(0.65 * 12 [in/ft]) <br />Filtration Sand or Rock <br />Filter <br />Impervious surface [ft2] * 1.1 [in] / <br />(0.50 * 12 [in/ft]) <br />Stormwater <br />Wetlands <br />Shallow Wetland Impervious surface [ft2] * 1.1 [in] / <br />(0.40 * 12 [in/ft]) <br />Pond/Wetland Impervious surface [ft2] * 1.1 [in] / <br />(0.55 * 12 [in/ft]) <br />Stormwater <br />Pond <br />Wet Pond Impervious surface [ft2] * 1.1 [in] / <br />(0.50 * 12 [in/ft]) <br />Multiple Pond Impervious surface [ft2] * 1.1 [in] / <br />(0.60 * 12 [in/ft]) <br /> <br />(g) The required water quality treatment volume standard for public linear <br />projects is determined as follows: <br />