The Department of Natural Resources proposed amendments to 10 CSR 10-6.400, Restriction of Emission of Particulate Matter From Industrial Processes, which restricts the emission of particulate matter in the source gas of an operation or activity. The proposed amendment would eliminate outdated information and clarify the intent of the regulation by correcting a reference and adding exemptions. http://www.sos.mo.gov/adrules/moreg/current/2008/v33n20/v33n20b.pdf p.1870.