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release toxic pesticides such as pentachlorophenol, carbamates, and <br />organometallics to the environment by leaching and dripping from treated <br />parts, container leaks, product misuse, and outside storage of pesticide <br />contaminated materials and equipment. Poor management of the <br />vegetation and poor application of pesticides or fertilizers can cause <br />appreciable stormwater contamination. <br />Pollutant Control Approach: Control of fertilizer and pesticide <br />applications, soil erosion, and site debris to prevent contamination of <br />stormwater. <br />Develop and implement an Integrated Pest Management Plan (IPM) and <br />use pesticides only as a last resort. Carefully apply pesticides/ herbicides, <br />in accordance with label instructions. Maintain appropriate vegetation, <br />with proper fertilizer application where practicable, to control erosion and <br />the discharge of stormwater pollutants. Where practicable grow plant <br />species appropriate for the site, or adjust the soil properties of the subject <br />site to grow desired plant species. <br />Applicable Operational BMPs for Landscaping: <br />• Install engineered soil/landscape systems to improve the infiltration <br />and regulation of stormwater in landscaped areas. <br />Do not dispose of collected vegetation into waterways or storm sewer <br />systems. <br />Recommended Additional Operational BMPs for Landscaping: <br />• Conduct mulch -mowing whenever practicable <br />• Dispose of grass clippings, leaves, sticks, or other collected vegetation, <br />by composting, if feasible. <br />• Use mulch or other erosion control measures on soils exposed for <br />more than one week during the dry season or two days during the rainy <br />season. <br />• Store and maintain appropriate oil and chemical spill cleanup materials <br />in readily accessible locations when using oil or other chemicals. <br />Ensure that employees are familiar with proper spill cleanup <br />procedures. <br />• Till fertilizers into the soil rather than dumping or broadcasting onto <br />the surface. Determine the proper fertilizer application rate for the <br />types of soil and vegetation encountered. <br />• Till a topsoil mix or composted organic material into the soil to create <br />a well -mixed transition layer that encourages deeper root systems and <br />drought -resistant plants. <br />• Use manual and/or mechanical methods of vegetation removal rather <br />than applying herbicides, where practical. <br />Volume IV -Source Control BMPs— December 2014 <br />2-22 <br />