1605 SE EVERETT MALL WAY WALMART 2018-01-01 MF Import

Seattle,Washington IRIPI a www.pacland.com IIIT 206.522.9510 TURNING VISIONS INTO REALITY stormwater release rates. Determination from the City may be based on past or current knowledge of drainage problems of the project site, or existing information indicating problem areas. All outfalls require energy dissipation. The project creates or adds 2,000 square feet, or greater, of new, replaced, or total of new plus replaced impervious surface area, therefore the project must comply with minimum requirements #1 through #5. This stormwater site plan addresses Preservation of Natural Drainage Systems and Outfalls, as applicable. See Sections II and VIII for more information regarding the existing discharge to the municipal stormwater system. Minimum Requirement #5: On-site Stormwater Management On-site stormwater management BMPs shall be provided to infiltrate, retain, and disperse stormwater runoff on-site to the maximum extent feasible without causing flooding or erosion impacts. The on-site stormwater management BMPs in the Manual, shall be provided, where feasible, to reduce the hydrologic disruption of developed sites. The project creates or adds 2,000 square feet, or greater, of new, replaced, or total of new plus replaced impervious surface area, therefore the project must comply with minimum requirements #1 through #5. This stormwater site plan addresses On-Site Stormwater Management; see Section III for more information. Minimum Requirement #6: Runoff Treatment Runoff treatment including oil control, enhanced treatment and/or basic treatment may be required. Treatment to achieve Oil Control shall be applied to projects that have "high- use" areas. High use areas are those that typically generate high concentrations of oil due to high traffic turnover or the frequent transfer of oil. Enhanced treatment for reduction in dissolved metals (unless the project site discharges directly to the Puget Sound or to the Snohomish River and its estuary) is required for Commercial project sites that disturb an acre or more of land, or that are part of a larger common plan of development or sale that will disturb an acre or more of land. Basic treatment is required for all other developments meeting the thresholds specified in the Manual. The project creates or adds 5,000 square feet total of effective, new and/or replaced pollution-generating impervious surface (PGIS), therefore the project must comply with minimum requirement#6. This stormwater site plan addresses Runoff Treatment; see Section VIII for more information. Minimum Requirement #7: Flow Control For project sites that disturb an acre or more of land, or that are part of a larger common plan of development or sale that will disturb an acre or more of land, stormwater Everett Mall Plaza Parcel Ill Retail Expansion Stormwater Site Plan Page 6