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Step S. Flow Control <br />All projects triggering the flow control thresholds shall employ flow control BMPstoinfilcrate, <br />disperse or detainstormwaterrunoffon-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 imperdous arm 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 bioretencion) and detention. <br />® Flow Control BMPSelection <br />box <br />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 />SEE BMP EXAMPLES AT THE BACK OF THIS PACKET <br />Table 1. Flow Control BMP Selection <br />Option <br />Type <br />DCSS Design <br />2019SWMMM <br />Requirement <br />Design Guidance: <br />Sections: <br />❑ <br />I. <br />Downspout <br />BMP T5.108: <br />Dispersion <br />OR <br />System* <br />BMP 5.30: <br />2A <br />Infiltradon <br />44.3(2) <br />BMP 15.10A: <br />Trench <br />44.3 (4) <br />BMPT7.30: <br />❑ <br />28. <br />Rain Gardens <br />Bioretention <br />COE Standard Plan <br />599 Figure V-5.12 <br />Celle and Swales <br />426 <br />❑ <br />3. <br />Detention <br />Section 411A <br />BMP D.2 <br />(2), and 44.4 <br />or BMP D.3 <br />(3) <br />See Figure V12.1 <br />COE <br />Standard <br />Plans 415418 <br />Tor 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 Evereb Public Works <br />Small Prgect Slmmwffier See Plan Repot barPnyecfs in <br />Me Combined Sewer AreaSepMmber 2022 <br />