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EROSION CONTROL ELEMENT # 9 - Control Pollutants. <br />Requirements — Control Pollutants <br />1. All pollutants, including waste materials and demolition debris, that occur onsite shall be <br />handled and disposed of in a manner that does not cause contamination of stormwater. <br />Woody debris may be chopped and spread on site. <br />2. Cover, containment, and protection from vandalism shall be provided for all <br />chemicals, liquid products, petroleum products, and non -inert wastes present on the site <br />(see Chapter 173-304 WAC for the definition of inert waste). On -site fueling tanks shall <br />include secondary containment. <br />3. Maintenance and repair of heavy equipment and vehicles involving oil changes, hydraulic <br />system drain down, solvent and de -greasing cleaning operations, fuel tank drain down and <br />removal, and other activities which may result in discharge or spillage of pollutants to the <br />ground or into stormwater runoff must be conducted using spill prevention measures, such <br />as drip pans. Contaminated surfaces shall be cleaned immediately following any discharge <br />or spill incident. <br />4. Emergency repairs may be performed on -site using temporary plastic <br />placed beneath and, if raining, over the vehicle. Wheel wash or tire bath wastewater shall <br />be discharged to a separate on -site treatment system or to the sanitary sewer, when permitted. <br />5. Application of agricultural chemicals, including fertilizers and pesticides, shall be <br />conducted in a manner and at application rates that will not result in loss of chemical to <br />stormwater runoff. Manufacturers' recommendations for application rates and procedures <br />shall be followed <br />6. BMPs shall be used to prevent or treat contamination of stormwater runoff by pH <br />modifying sources. These sources include, but are not limited to, bulk cement, cement kiln <br />dust, fly ash, new concrete washing and curing waters, waste streams generated from <br />concrete grinding and sawing, exposed aggregate processes, and concrete pumping and <br />mixer washout waters. Stormwater discharges shall not cause or contribute to a violation <br />of the water quality standard for pH in the receiving water. <br />7. Construction sites with significant concrete work shall adjust the pH of stormwater if <br />necessary to prevent violations of water quality standards. <br />The following Best Management Practices, (BMPs), the ones that the Contractor will implement on <br />site, to meet the erosion control requirements listed above: <br />16 <br />