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IV-4 Soil Erosion, Sediment Control, and <br /> Landscaping Source Control BMPs <br /> S407 BMPs for Dust Control at Disturbed Land <br /> Areas and Unpaved Roadways and Parking Lots <br /> Note: Contact the local air quality authority for appropriate and required BMPs for dust control to <br /> implement at your project site. Use the following website to determine the air quality authority for the <br /> project site: <br /> https://ecology.wa.gov/About-us/Our-role-in-the-community/Partnerships-committees/Clean-air- <br /> agencies <br /> Description of Pollutant Sources: Dust can cause air and water pollution problems particularly at <br /> demolition sites and in arid areas where reduced rainfall exposes soil particles to transport by air. <br /> Pollutant Control Approach: Minimize dust generation and apply environmentally friendly and <br /> government approved dust suppressant chemicals, if necessary. <br /> Applicable Operational BMPs: <br /> . Sprinkle or wet down soil or dust with water as long as it does not result in a wastewater dis- <br /> charge. <br /> . Use only dust suppressant chemicals that are approved by the local jurisdiction and/or state <br /> government approved dust suppressant chemicals such as those listed in Alternatives to Haz- <br /> ardous Materials: Techniques for Dust Prevention and Suppression(Ecology, 2016b). <br /> . Avoid excessive and repeated applications of dust suppressant chemicals.Time the applic- <br /> ation of dust suppressants to avoid or minimize their wash-off by rainfall or human activity <br /> such as irrigation. <br /> . Apply stormwater containment to prevent the conveyance of sediment into storm drains or <br /> receiving waters. <br /> . Protect inlets/catch basins during application of dust suppressants. <br /> . Ecology prohibits the use of motor oil for dust control.Take care when using lignin derivatives <br /> and other high BOD chemicals in areas susceptible to contaminating surface water or ground <br /> water. <br /> . Consult with Ecology and the local permitting authority on discharge permit requirements if <br /> the dust suppression process results in a wastewater discharge to the ground, ground water, <br /> storm drain, or surface water. <br /> . Street gutters, sidewalks, driveways, and other paved surfaces in the immediate area of the <br /> activity must be swept regularly to collect and properly dispose of dust, dirt, loose debris, and <br /> garbage. <br /> 2019 Storm water Management Manual for Western Washington <br /> Volume IV-Chapter 4-Page 521 <br />