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1 <br /> On-site stormwater management BMP's have been evaluated in accordance with the 2019 <br /> Manual stormwater requirements and the project is electing to use the List No. 2 option for on- <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> I <br /> site stormwater BMPs selection. Please see the On-Site Stormwater Management BMP's section <br /> of this report for more information. <br /> Minimum Requirement#6: Runoff Treatment <br /> Projects shall employ Runoff Treatment BMPs in accordance with the following thresholds, <br /> standards, and requirements to remove pollutants from stormwater runoff. <br /> The following TDAs following require construction of Runoff Treatment BMPs. If a TDA meets any of <br /> the following thresholds, Runoff Treatment BMPs are required.The project proponent must <br /> demonstrate that the TDA does not meet either of the following thresholds for Runoff Treatment <br /> BMPs to not be required for that TDA. <br /> • TDAs that have a total of 5,000 square feet or more of pollution-generating hard surface <br /> (PGHS), or <br /> I . TDAs that have a total of 3/4 of an acre or more of pollution-generating pervious surfaces <br /> (PGPS)—not including permeable pavements, and from which there will a surface discharge <br /> in a natural or man-made conveyance system from the site. <br /> Response: This project will construct greater than 5,000 square feet of PGHS in the overall site <br /> threshold discharge area;therefore, a water quality treatment facility will be provided as part of <br /> this redevelopment. Enhanced water quality treatment for the PGHS will be provided by means <br /> of a BioPod water quality treatment facility and will be adequately designed per the 2019 <br /> Manual to treat runoff from all pollution-generating surfaces prior to flow control treatment as <br /> required. Please see Water Quality section of this report for more information. <br /> Minimum Requirement#7: Flow Control <br /> IProjects shall employ Flow Control BMPs in accordance with the following thresholds, standards, <br /> and requirements to reduce the impacts of stormwater runoff from hard surfaces and land cover <br /> conversions. <br /> Each TDA within a project that requires Minimum Requirement#7 (as detailed in 1-3.3 Applicability <br /> of the Minimum Requirements) must be reviewed to determine if Flow Control BMPs are required <br /> for the TDA to be in compliance with Minimum Requirement#7 for the TDA. <br /> When assessing a TDA against the following thresholds, only consider the types of surfaces (e.g. <br /> new hard surfaces, replaced hard surfaces, converted vegetation areas)that are subject to Minmum <br /> Requirement#7, per the Project Thresholds in 1-3.3 Applicability of the Minimum Requirements. <br /> The following TDAs require construction of Flow Control BMPs to achieve the Flow Control <br /> Performance Standard. If a TDA meets any of the following thresholds, Flow Control BMPs are <br /> required. The project proponent must demonstrate that the TDA does not meet any of the <br /> following thresholds for Flow Control BMPs to not be required for that TDA. <br /> NAVIX Everett VA Clinic— Everett, WA 11 <br />