Fugitive Dust Handbook

5.0   PAVED ROADS

Particulate emissions from paved roads occur whenever vehicles travel over a paved surface such as a paved road or paved parking lot. Particulate emissions from paved surfaces are due to direct emissions from vehicles in the form of exhaust, brake wear and tire wear emissions, and resuspension of loose material on the road surface. In general terms, resuspended particulate emissions from paved roads originate from, and result in the depletion of the loose material present on the surface (i.e., the surface loading). In turn, that surface loading is continuously replenished by other sources. At industrial sites, surface loading is replenished by spillage of material and trackout from unpaved roads and staging areas. The primary PM emission estimation methodology presented in the fugitive dust handbook is taken from Section 13.2.1 of AP-42 last updated in December 2003. An alternate methodology adopted by the California Air Resources Board in July 1997 is also included in the handbook. The sample control measure cost-effectiveness calculation spreadsheet presented for this source category involves the use of PM10 efficient street sweepers.