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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 /> 15 <br />