Resolution 4123 - Laserfiche WebLink

• • Immediately clean up any spills by removing and properly disposing of affected soils at an approved site. 13. *The Applicant shall provide further analysis to identify potential pollutant loads in surface water runoff prior to issuance of construction permits, as required by the City. 14. *During site preparation all refuse must be removed and disposed of appropriately. 15. *Educational signs must be provided to communicate to Costco patrons the importance of water quality and to describe the store's storm drainage features and wetlands. Details as to the location, design and content of the signs must be provided as part of the detailed wetland mitigation plan. 16. *Patrons and Costco employees shall be encouraged to carpool or use public transit to travel to and from Costco. 17 *Soils in wetland areas shall be amended to achieve a medium-fine texture to increase their ability to absorb phosphorus. 18. The use of phosphorus-containing fertilizers on this project for stormwater facility construction, or for installation and/or maintenance of landscaping, is prohibited. 19. The parking lots shall be swept weekly, with a vacuum or regenerative air sweeper. Sweeper operators shall be trained in achieving maximum sweeper performance. 20. Per City policies, due to the proximity of the site to environmentally sensitive areas, and its location within the Silver Lake drainage basin, seasonal limitations will be placed on land alteration activities. Land alteration activities are defined in the City's Design and Construction Standards and Specifications as clearing, grubbing, excavation, filling, grading, and stockpiling. Determination of the exact seasonal limitation period requires site specific information generally not available until the project design state. However, preliminary analysis using the information available at this time indicates that land alteration activities on the project site may be restricted to the period between April 1 and October 1. Excavation and grading for wetland mitigation work shall take place between June 15 and September 15, unless the mitigation area can be kept hydrologically separated from the existing wetland and drainage corridor until the mitigation area has been stabilized. 21. New and used tires shall be stored under-cover, with any necessary drains for the storage area(s) routed to the sanitary sewer system. 22. No produce shall be stored outside. Any dumpsters containing produce waste shall be stored in non-leaking, water-tight storage containers that are replaced as necessary when they become damaged or start to leak; or dumpsters shall be stored under-cover, with any necessary drains routed to the sanitary sewer. 23. An NPDES (National Pollutant Discharge Elimination System) permit, administered by Washington State's Department of Ecology, will be required for clearing and grading activities on this site if the site area disturbed by land alteration activities is greater than or equal to 5 acres. BK 3039 PG 0405 6 06150 24R