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San Joaquin valley Air Pollution Control District COMPLIANCE ASSISTANCE BULLETIN September 2002 (Update from June 2002) Fugitive Dust Control at Construction Sites Regulation Vill, Fugitive �M10 Prohibitions, of the District's Rules and Regulations regulates activities that generate fugitive dust. Fugitive dust is emitted to the air from open ground or caused by activities such as excavation, transporting bulk materials, or travel on unpaved surfaces. "PM10" is a term applied to small sized particulate matter - microscopic dust particles - in the air. The San Joaquin Valley currently exceeds the air quality standards for particulate matter. It is for this reason that the District adopted Regulation VIII in 1993. Significant amendments to Regulation VIII were adopted in 2001 and became effective May 15, 2002. The following dust control and administrative requirements are applicable at construction sites. Visible Dust Emissions (VIDE). Visible dust emissions may not exceed 20% opacity during periods when soil is being disturbed by equipment or wind at any time. Dust control may be achieved by means of applying water before and during earth work and on traffic areas, phasing work to limit dust, and setting up wind fences to limit wind blown dust. VDE opacity of 20% mems the amount of dust that would obstruct the view of an object by 20%. Soil stabilization. Soil stabilization is required at any construction site after normal working hours and on weekends 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 is an effective method for stabilizing a disturbed surface area. Long-term methods include applying dust suppressants or establishing vegetative cover. Restricting vehicle access from the area will help to maintain a stabilized surface. Information regarding stabilization standards and test methods are in Rule 8011 —General Requirements. Carryout and Trackout. These requirements are found in Rule 8041 — Carryout and Trackout. Carryout and trackout are materials adhered to vehicle tires and transport vehicles carried from a construction site and deposited onto a paved public road. Should carryout and trackout occur, it 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 recommended clean- up methods include manually sweeping, sufficiently wetting the area prior to mechanical sweeping to limit VDE or using a PM10-efficient street sweeper. A blower device, or dry sweeping with any mechanical device other than a PM10-efficient street sweeper is prohibited. Northern Reglan Office Central Region Office southern Region Office 4230 Kiernan Avenue, Suite 130 1990 East Gettysburg Avenue 2700 "M" Street, Suite 275 Modeso, CA 95356-9321 Fresno, CA 93726-0244 Bakersfield, CA 93301-2370 (209) 557-6400 . FAX (209) 557-6475 (559) 230-6000 + FAX (559) 230-6062 (661) 326-6900 ♦ FAX (561) 326-6985