9300 W MALL DR 2018-01-01 MF Import

AGENCIES WITH JURISDICTION: � A Hydraulics Project Approval (HPA) from the State Department of Fisheries may be require3 for this project due to its location within the Nor[h Creek drainage basin. More stringent detention and watcr treaVnent 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 stacing ihat an HPA is not needed should be included along with the plans for Public Works review. A National Pollutant Discharge Elimination System (NPDES) Permit, administered by Washington State's Department of Ecology, may be required for ciearing and grading activities on this site due to iu size. MITIGATION OF ADVERSE IMPACTS BY SEPA: Any gradino/fill on this site shall be done so a.; to not impact the surrounding properries. �(SEPA Earth, Land and Shoreline Use PoGcies). ��. 5� DeveloFment of the site m�ast not adversely affect the hydrology of the site's wedands, including surface and subsurface flows. The quantity and rate of water entering the weUands must be deternuned for current conditions. Under development condiaons, a similar rate and quantity of roof drdinage or treated runoff must condnue to be discharged to the wedand(s). Prior to appiication for uuilding permiu and plan review by the Public Works Department, a charactenzaaon of the hydrology of the wedand(s) on or adjacent te this project that may be affected by the development of this site must be submitted to and approved by the Planning and Public Works Depaztments. (SEPA Water and Plant and Animal, and Public Services and Utilities Policies) 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 mitigarion commitments, memoranda and agency commenu regarding thvs proposal shall be binding. (SEPA Public Services and Utilides, and Other Policies) Qn-site detendon, vegetated swales, and a wetpond aze required per City Design Standards. ^(SEPA Public Services and Utilities Policies) ,/ Discharge of watEr to wetlands should mimic natural discharges as much as is feasible. . Where point source dischar�es do not occur, this type of dischazge should be avoided. Techniques that result in dispersed dischazge, such as dispersion trenches or buried perforated pipe located at �✓eUand buffer edges, can be used to mimic naturally occuring sheet flow into wedands. (SEPA Earth, 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) No sto�water facilides, including detendon faciliries or veg� .:ed swales, shall be located inside identified wedands, streams, or their buffer azeas. Natural we[lands or wedands created for mitigation shall not be used for detenrion of untreated stormwater. The swales must be designed to heip Ireat all stormwater runoff from the site's paved areas but do not take water from the wetlands. (SEPA Water Policies)