OAR 340-230-0335: Municipal Waste Combustors: Standards for Municipal Waste Combustor Fugitive Ash Emissions

(1) No owner or operator of an affected facility shall cause to be discharged to the atmosphere visible emissions of combustion ash from an ash conveying system (including conveyor transfer points) in excess of 5 percent of the observation period (i.e., 9 minutes per 3-hour period), as determined by EPA Reference Method 22 observations as specified in OAR 340-230-0340(11), except as provided in sections (2) and (3) of this rule. (2) The emission limit specified in section (1) of this rule does not cover visible emissions discharged inside buildings or enclosures of ash conveying systems; however, the emission limit specified in section (1) of this rule does cover visible emissions discharged to the atmosphere from buildings or enclosures of ash conveying systems. (3) The provisions specified in section (1) of this rule do not apply during maintenance and repair of ash conveying systems. [NOTE: View a PDF of referenced EPA Methods by clicking on "Tables" link below OAR 340-230-8010.]