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Step 6. Flow Control <br /> All projects triggering the flow control thresholds shall employ flow control BMPsto infiltrate, <br /> disperse or detain stormwater runoff on-site to meet the flow control requirements of section 6.10 <br /> of the DCSS. Projects that create 2,000 sf or more of net new impervious area shall provide flow <br /> control designed by an Engineer. Use of the sizing tables below will not be allowed for projects <br /> with 2,000 sf or more net new impervious area. <br /> The three options for meeting the flow control requirement include dispersion, infiltration <br /> (infiltration trench or bioretention) and detention. <br /> Flow Control BMP Selection <br /> y Identify(check box of) the BMP that will be used to meet the flow control requirement <br /> in the table below.All BMP's shall be designed to meet the flow requirements of <br /> Section 6.10 of the DCSS. <br /> Table 1. Flow Control BMP Selection <br /> Option Type DCSS Design 2019 SWMMWW <br /> Requirement Design Guidance: <br /> Sections: <br /> O I. Downspout BMP T5.10B: <br /> Dispersion OR <br /> System* <br /> BMP 5.30: <br /> El 2A Infiltration 4-4.3 (2) BMP T5.10A: <br /> Trench <br /> ❑ 213 Rain Gardens 4-4.3 (4) BMPT7.30: <br /> Bioretention COE Standard Plan See Figure V-5.12 <br /> Cells and Swales 426 <br /> ❑ 3. Detention Section 4-4.4 BMP D.2 <br /> (2), and 4-4.4 or BMP D.3 <br /> (3) <br /> See Figure V12.1 <br /> COE <br /> Standard <br /> Plans 415-418 <br /> *For roof runoff only.To provide flow control from other surfaces,use option 2 or 3. <br /> All facilities shall meet the facility access requirements of section 4-4.2, and Maintenance requirements of <br /> section 4-4.2(5)of Volume I of the DCSS. <br /> City of Everett Public Works <br /> Small Project Stormwater Site Plan Report for Projects in <br /> the Combined Sewer Area-April 2021 <br /> \'.\\" <br />