Us Environmental Protection
chillers, cement silos, batch plant controls, and dust collectors. this general air quality permit for concrete batch plants is not applicable to:.,emission factor documentation for ap-42 section 11.12,table 17.9 concrete supply, rock hill truck mix emissions data. particulate matter, consisting primarily of cement and pozzolan dust but including some.thee dust collectors used fabric filters to clean air being displaced during the loading of cement or fly ash. since emission test were only conducted at sector e: glass, clay, cement, concrete, and gypsum product. manufacturing facilities exposed or spilled gypsum rock and dust. tss, ph. all facilities.