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San Joaquin Valley Air Pollution Control District { COMPLIANCE E C ASSISTANCE S ANCE B LLE U T1N October 2004 Fugitive Dust Control at Construction Sites:'New Requirements . Regulation Vill, Fugitive PM10 Prohibitions,,of the•District's Rules 'and Regulations apply.to activities that generate fugitive dust.. Fugitive dust is emitted into the air by activities that disturb the soil, such as from earthmoving activities and vehicularlequipment traffic on unpaved-surfaces.. Windblown dust is also of concern at.construction sites. The:.District adopted Regulation VIII in 1993 and its most recent amendments became effective on October 1,' 2404..-This is a basic summary of the regulation's requirements as they apply to construction sites. Visible Dust Emissions (VDE) may not exceed 20% opacity during.periods when: soil.is being disturbed by equipment or by wind.at.any time. Visible Dust Emissions opacity of 20% means dust that would obstruct'an observer's view of an object b 20% r J Y District inspectors rs a e state certified to evaluate visible'emi i ss ons_ "•Dust control may be achieved by applying.Water before/during earthwork and-onto unpaved traffic areas, phasing York to limit dust, and setting up wind fences to fimit wind blown dust. Soii.Stabilization is required at regulated.construction sites after normal working hours and on weekendsv.and . holidays. This':requirement also applies to inactive construction areas such as phased projects where disturbed 'land is left unattended. Applying water to form a visible crust:on the soil and restricting vehicle access are often effective for short-term stabilization of disturbed surface areas. Long-term methods including applying dust suppressants and establishing vegetative cover. Carryout and-:Trackout occur when materials from emptied or Idaded vehicles fails onto a paved surface or shoulder of a public road or when materials adhere to ' ehicle tires and are deposited onto a paved surface or. shoulder of a public road. Should either occur, the material must be cleaned up at least daily, and immediately if it 'extends more than 50 feet from the exit point onto a paved road. The appropriate clean=up'methods require the complete removal and cleanup of mud and dirt from the paved surface and'shoulder. Using a blower device or dry sweeping with. any mechanical device other than a P.M10-efficient street sweeper is a violation. Larger construction sites must prevent carryout and trackout from occurring by installing gravel pads, grizzlies, wheel washers, paved interior roads, or a combination thereof afeach exit point from the site. Access and Haul Roads that are unpaved, as well as unpaved vehicle and equipment traffic areas at construction sites must have dust control. Speed limit signs limiting vehicle speed to 15 mph or less at donstruction sites must be posted every 500 feet. Storage Piles and Bulk Materials have handling, storage, and transportation requirements that include applying water when handling materials,.wetting or covering stored materials, and installing.wind barriers to limit VDE. Also, limiting vehicle speeds, loading haul trucks with a freeboard of six inches or greater along Northern Region Office Central Region Office Southern Region Office 4230 Kiernan Avenue,Suite 130 1990 East Gettysburg Avenue 2700"M"Street,Suite 275 Modesto,CA 95356.9321. Fresno,CA 93726-0244 Bakersfield,CA 93301-2373 (209)557-6400 t FAX(209)5. 57-6475 (559)230-6000 ♦ FAX(559)230-6062 (661)326-6900 ♦ FAX(661)326-6985