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On-Site Stormwater Management BMPs for MR#1-5 Projects (continued). <br /> Other <br /> Simplified infeasibility criteria Feasible/infeasible? <br /> Check box if criterion is true. Only one box needs to be checked to Provide justification if <br /> Priority BMP name indicate that the BMP is infeasible. infeasible. <br /> 2 BMP T5.14: Were Rain Gardens feasible for Category 2—Roofs? ❑ Not applicable since <br /> Rain Gardens ❑ Flow control exempt as site directly discharges to Puget site is flow control <br /> Sound or Snohomish River;or in a storm drainage system exempt(direct <br /> that is entirely manmade from the site to one of these water discharge) <br /> bodies. ❑ Infeasible <br /> ❑ Yes,they were considered to be feasible ❑ Feasible <br /> ❑ No,they were not considered to be feasible <br /> 2 BMP T7.30: <br /> Bioretention If Bioretention Cells,Swales,and Planter Boxes are used,a separate full Stormwater Site Plan <br /> Cells,Swales, Report must be submitted by an engineer and this template cannot be used. <br /> Planter Boxes <br /> 3 BMP T5.12: ❑ Positive drainage for sheetflow runoff cannot be achieved. ❑ Infeasible <br /> Sheet Flow ❑ Area to be dispersed(e.g.,driveway, patio)cannot be graded ❑ Feasible <br /> Dispersion to<15 percent slope. <br /> ❑ <10-foot-wide vegetation buffer for dispersion of the Justification: <br /> adjacent 20 feet of contributing surface for flat to moderately <br /> sloped areas. <br /> ❑ <25-foot vegetated flow path between berms forvariably <br /> sloped areas. <br /> ❑ Site setbacks and design criteria provided in BMPT5.12 <br /> (SWMMWW V4.1)cannot be achieved. <br /> 3 BMP T5.11: ❑ <3-foot length of rock pad and 50-foot flow path OR a ❑ Infeasible <br /> Concentrated dispersion trench and 25foot flow path for every 700sfof ❑ Feasible <br /> Flow Dispersion drainage area with applicable setbacks. <br /> ❑ >700 square foot drainage area to any dispersion device. Justification: <br /> ❑ Site setbacks and design criteria provided in BMP T5.11 <br /> (SWMMWWV4.1)cannot be achieved. <br /> MR#5 Summary of BMPs to Install and Maintain —select the first feasible BMP in each category. <br /> �=r Category 1— Lawn and Landscaped Areas <br /> 0 BMP T5.13:Post-Construction Soil Quality and <br /> Roofs <br /> ❑ BMP T5.30: Full Dispersion <br /> ❑ BMP T5.10A: Downspout Full Infiltration <br /> ❑ BMP T5.14: Rain Gardens <br /> BMP T5.106: Downspout Dispersion Systems <br /> ❑ BMP T5.10C: Perforated Stub-out Connections <br /> Other <br /> 0 BMP T5.30: Full Dispersion <br /> ❑ BMP T5.15: Permeable Pavements <br /> ❑ BMP T5.14: Rain Gardens <br /> ❑ BMP T5.12:Sheet Flow Dispersion <br /> ❑ BMP T5.11: Concentrated Flow Dispersion <br /> City of Everett Public Works <br /> Small Project Stormwater Site Plan/Report—Sept.2023 Page 27 of 40 <br />