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BMP and <br />Infeasibility description <br />applicable lists <br />Infeasibility criteria <br />and rationale for each <br />BMP not selected <br />T5.12 <br />9 Site setbacks and design criteria provided in BM P T5.12 <br />There is not <br />Sheet Flow <br />(SWMMWW V4.1) cannot be achieved. <br />enough space in <br />❑ Positive drainage for sheer flow runoff cannot be achieved. <br />the ROW nor <br />❑ At Area to be disposed! (e.g., driveway, patio) cannot be graded to <br />existing <br />have less than a 15 percent slope. <br />Vegetation for <br />I3 At Forflatto moderately sloped areas, at Iodate 10 foot -wide <br />dispersion. <br />vegetation buffer for dispersion of the adjacent 20 feet of <br />contributing surface cannot be achieved. For variably sloped areas, <br />at least a 25 foot vegetated flowpath between berms cannot be <br />achieved. <br />T5.11 <br />I3 Site setbacks and design criteria provided in BMP T5.11 <br />There is not <br />concentrated <br />(SWMMWWV4.1) cannot be achieved. <br />enough ROW <br />Flow Dispersion <br />9 A minimum 3 foot length of rock pad and 0foot flowpath OR a <br />space for <br />dispersion trench and 25 foot flowpath for every 700 square feet of <br />dispersion to meet <br />drainage area followed with applicable setbacks cannot be <br />achievei <br />design criteria. <br />9 More than700 square feet drainage area drains to any dispersion <br />device. <br />City of Everett Public Works <br />Small Project Stormwater Site Plan Report Dec 2019 <br />