KERN COUNTY AIR POLLUTION CONTROL DISTRICT
RULE 406 - PROCESS WEIGHT-PORTLAND CEMENT KILNS
(Adopted 4/18/72, Renumbered 5/89)
Cement kilns, the construction or modification of which is commenced after August 17, 1971, shall not discharge into the atmosphere particulate matter in excess of the Environmental Protection Agency Standards of Performance. Cement kilns regulated by this Rule are not subject to other process weight Rules.