Section 550 - PREVENTING PARTICULATE MATTER FROM BECOMING AIRBORNE550.1 The owner or operator of a source or activity that generates fugitive dust, including, but not limited to, material handling, building construction or demolition, abrasive blasting, roadways and lots, shall employ reasonable precautions to prevent fugitive dust from becoming airborne and must maintain and operate the source or activity to minimize emissions.550.2 It shall be unlawful for any person to cause or allow the emission of particulate matter which becomes deposited upon the property of others in sufficient quantities and of such characteristics and duration as is, or is likely to be, injurious to human health, plant or animal life, or property, or which unreasonably interferes with enjoyment of life and property.550.3 For this section, reasonable precautions may include, but are not limited to: (A) Applying and reapplying water as necessary on materials and/or surfaces (e.g., access roads, etc.);(B) Using enclosed conveyors, containment, and covered containers when handling and transferring materials;(C) Covering loads when transporting material;(D) Limiting vehicle speed on unpaved surfaces;(E) Paving or installing quarry spalls at exit aprons;(F) Cleaning vehicle tires and undercarriages before exiting to paved public roadways; and(G) Promptly cleaning material that has been tracked out onto paved public roadways. Wash. Admin. Code Northwest Clean Air Agency, 500, 550
PASSED: January 8, 1969 AMENDED: February 14, 1973, August 9, 1978, October 14, 1987, April 14, 1993, November 12, 1999, July 14, 2005, September 11, 2014