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4. Time the fertilizer application to periods of maximum plant uptake. Generally fall and spring <br /> applications are recommended,although WSU turf specialists recommend four fertilizer applications per <br /> year. <br /> 5. Properly trained persons should apply all fertilizers.At commercial and industrial facilities,fertilizers <br /> should not be applied to grass swales,filter strips,or buffer areas that drain to sensitive water bodies <br /> unless approved by the City. <br /> Suggested BMPs for IPM <br /> An integrated pest management program might consist of the following steps: <br /> Step 1 Correctly identify problem pests and understand their life cycle. <br /> Step 2 Establish tolerance thresholds for pests. <br /> Step 3 Monitor to detect and prevent pest problems. <br /> Step 4 Modify the maintenance program to promote healthy plants and discourage pests. <br /> Step 5 Use cultural, physical,mechanical,or biological controls first if pests exceed the tolerance <br /> thresholds. <br /> Step 6 Evaluate and record the effectiveness of the control and modify maintenance practices to support <br /> lawn or landscape recovery and prevent recurrence. <br /> A5.1-Demolition of Buildings <br /> Description of Pollutant Sources: This activity applies to removal of the existing building(shed)by <br /> manual methods,and subsequent clearing of the rubble. The loose debris can contaminate stormwater. <br /> Pollutants of concern include toxic organic compounds, heavy metals,and suspended solids. <br /> Pollutant Control Approach: Regularly cleanup debris that can contaminate stormwater. Protect the <br /> stormwater drainage system from dirty runoff and loose particles. Sweep paved surfaces daily. <br /> Required BMPs <br /> The following BMPs or equivalent measures are required of all businesses and public agencies engaged in <br /> building demolition: <br /> 1. Storm drain covers or a similarly effective containment device must be placed on all nearby drains to <br /> prevent dirty runoff and loose particles from entering the stormwater drainage system. Covers shall be <br /> placed at the beginning of the workday and the accumulated materials collected and disposed of before <br /> removing the covers at the end of the workday. If storm drains are not present,dikes,berms,or other <br /> methods must be used to protect overland discharge paths from runoff. Street gutters,sidewalks, <br /> driveways, and other paved surfaces in the immediate area of the demolition must be swept at the end of <br /> each workday to collect and properly dispose of loose debris and garbage. <br />