8920 EVERGREEN WAY THE RESERVE 2025-07-25

CITY OF EVERETT STORMWATER MANAGEMENT MANUAL fertilization. For details on soils testing,contact the Snohomish Conservation District or Cooperative Extension Service. 2. Fertilizers should be applied in amounts appropriate for the target vegetation and at the time of year that minimizes losses to surface and groundwater. Do not fertilize during a drought or when the soil is dry. Alternatively,do not apply fertilizers within 3 days prior to predicted rainfall. The longer the period between fertilizer application and either rainfall or irrigation,the less fertilizer runoff occurs. 3. Use slow release fertilizers such as methylene urea,IDBU,or resin coated fertilizers when appropriate,generally in the spring. Use of slow release fertilizers is especially important in areas with sandy or gravelly soils. 4. Time the fertilizer application to periods of maximum plant uptake. Generally fall and spring applications are recommended,although WSU turf specialists recommend four fertilizer applications per year. 5. Properly trained persons should apply all fertilizers. At commercial and industrial facilities, fertilizers should not be applied to grass swales,filter strips, or buffer areas that drain to sensitive water bodies unless approved by the City. Suggested BMPs for IPM An integrated pest management program might consist of the following steps: Step 1 Correctly identify problem pests and understand their life cycle. Step 2 Establish tolerance thresholds for pests. Step 3 Monitor to detect and prevent pest problems. Step 4 Modify the maintenance program to promote healthy plants and discourage pests. Step 5 Use cultural,physical,mechanical,or biological controls first if pests exceed the tolerance thresholds. Step 6 Evaluate and record the effectiveness of the control and modify maintenance practices to support lawn or landscape recovery and prevent recurrence. For an elaboration of these steps refer to Appendix D,Example of an IPM Program. A3.7 Painting, Finishing, and Coating of Vehicles, Boats, Buildings, and Equipment Description of Pollutant Sources: Surface preparation and the application of paints,finishes,and/or coatings to vehicles,boats,buildings,and/or equipment outdoors can be sources of pollutants. Potential pollutants include organic compounds,oils and greases,heavy metals,and suspended solids. Pollutant Control Approach: Cover and contain painting and sanding operations and apply good housekeeping and preventive maintenance practices to prevent the contamination of stormwater with painting overspray and grit from sanding. Required BMPs 1. Train employees in the careful application of paints,finishes,and coatings to reduce misuse and overspray. Use ground or drop cloths underneath outdoor painting, scraping, sandblasting work, and properly clean and temporarily store collected debris daily. 2. Do not conduct spraying,blasting,or sanding activities over open water or where wind may blow paint or waste into water. Volume IV—Source Control 3-25