9300 W MALL DR 2018-01-01 MF Import

�,- AGENCIES WITH JURISDICTION: 1. A Hyciraulics Project Approval (HPA) from the State Department �f Fisheries may be requ�red for this project due to its location within the North Creek drainage basin. More stringent detention and water treatment requirements than the City would impose may be placed on the project as a condition of the HPA. A copy of the HPA or a letter from the Department of Fisheries stating that an HPA is not needed should be included along with the plans for Public Works review. 2. A National Pollutant Dischazge Elimination System (NPDES) Pexmit, administered by Wa�`dngton State's Departmen. of Ecology, may be reyuired for clearing and grading activities on this site due to its size. MITIGATION OF ADVERSE IMPACTS BY SEPA: 1. Any grading/f�i �n this site shall be done so as to not impact the surrounding properties. (SEPA Earth, Land and Shoreline Use Policies). 2. Development of the site must not adversely affect the hydrol�gy of the site's wetiands, including surface and subsurface flows. The quantity and rate of water entering the wedands must be determined for current conditions. Under development conditions, a similar rate and quantity of roof drainage or treated runoff must wntinue to be dischazged to the wedan:l(s). Prior to application for building permits and plan review by the Public Works Depaztment, a charactenzadon of the hydrology of the wedand(s) on or adjacent to this project that may be affected by the development of this site must be submitted to and approved by the Planning and Public Works Departments. (SEPA Water and Plant and Ammal, and Public Services and Utilities Policies) 4. x 5. The applicant must comply with the provisions of the Conceptual Midgation Plan By David Evans and Associates, Inc. dated Mazch 7, 1991, and the Conceptual Wedand Buffer Enhancement Plan dated January 8, 1993• All other prior agreed wedand mitigation commitments, memoranda and agency comments regazding ttus proposal shall be binding. (SEPA Public Services and Udlities, and Other Policies) On-site detention, vegetatc.3 swales, and a wetpond are required per City Design Standards. (SEPA Public Services and Utilities Policies) Dischuge of water to wetlands should mimic nah►ral discharges as much as is feasible. Where point sourcc discharges do not occur, this type of discharge should be avoided. Techniques that result in dispersed discharge, such as dispersion trenches or buried perforated pipe located at wetland buffer edges, can be used to mimic naturally occuring sheet flow into wetlands. (SEPA EaRh> and Water Policies) a. Proposed vegetated swales must be shown on the required landscaping plan, as well as on Public Works drainage plans. (SEPA Water and Other Policies) x b. No stormwater facilities, including detention facilities or vegetaced swales, shall be locatecl inside idendfied wedands, streams, or their buffer areas. Natural wedands or wedands created for mitigation shall not be used for detention of untreated stormwater. The swales must be designed to help treat all stormwater runofF from �c the site's paved azeas but do not take water from the wedands. (SEPA Water Policies)