1611 SE EVERETT MALL WAY 2018-01-02 MF Import

13. Site development shall not result in making existing adjacent parking areas iron -compliant with City standards. 14. Compact parking stalls may not be applied towards code -required parking supply. 15. The City is in the process of adopting new stormwater standards, which are expected to become effective on February 15, 2010. The actual effective date will be established by ordinance. Under Section 15.28.010 EMC, an application for a land use permit or other project permit shall be considered under the stormwater standards in effect on the date a complete land use or project permit application is filed for that proposal. A complete land use application shall consist of all items required under Section 15.20.020 EMC, plus a complete Stormwater Site Plan. A Stormwater Site Plan is a comprehensive drainage report that provides the information necessary to demonstrate compliance with the requirements of the City's Drainage Ordinance (Chapter 14.28 EMC), consistency with applicable City stormwater management standards and policies, and is stamped and signed by a professional civil engineer licensed in the State of Washington. Requirements for Stormwater Site Plans are presented in the City's Stormwater Management Manual. For more information, see Planning Director Interpretation No. PDI09-002. 16. A Construction Stormwater General Permit, administered by the Department of Ecology, will be required for this project if it disturbs an acre or more of land. Additional information and application forms can be found at www ecv wa aov/oroarams/wg/stormwater/construction. 17. Stormwater treatment is required when 5,000 s.f. or more of hydraulically -connected pavement is created and/or redeveloped by the project. Treatment of stormwater runoff from hydraulically - connected pavement must occur, per City standards, prior to discharge of the stormwater from the site, or to a stream, wetland, or underground infiltration system. If suitable soils exist on the site, low impact development (LID) techniques (e.g. permeable pavement, bioretention areas, and dispersion through stream/wetland buffers) may be used to avoid creating hydraulically -connected pavement from a stormwater treatment standard. From a stormwater treatment standpoint, for a paved area to be considered hydraulically disconnected, stormwater runoff from at least the 6-month, 24-hour storm must be fully retained and/or infiltrated. 18.The options for treatment of runoff from hydraulically -connected pavement include: a. An infiltration basin with pretreatment' if suitable soils exist on the site. b. A wetpond. c. A constructed wetland. d. A stormwater technology with a General Use Level Designation (GULD) from the Washington State Department of Ecology for either basic or enhanced treatment, with pretreatment. 19. Stormwater detention is currently required when 5,000 s.f. or more of hydraulically connected impervious area is created by a project. If suitable soils exist on the site, underground infiltration systems (e.g. infiltration trenches) or low impact development techniques (e.g. splash blocks, permeable pavement, bioretention areas, rainwater harvesting) may be used to avoid creating hydraulically -connected impervious area from a stormwater detention standpoint. Section 3-2.2 of the City's Stormwater Management Manual lists site and design criteria that must be met. 1 Acceptable pretreatment systems are either a wetvault or tank designed in accordance with City standards and containing 30% of the 6-month, 24 hour storm as dead storage, or a pretreatment system that has obtained a GULD for pretreatment from the Washington State Depa nt of Ecology. al