The company cooperated with EPA in reaching the agreement before the filing of an EPA administrative complaint. A January 1997 stack test showed the company was exceeding its total chromium emission limit from its three hard-chrome electroplating tanks. The agreement requires Allison to install chromium emissions control equipment by October 6. In addition, as the supplemental environmental project, the company voluntarily agreed to install ammonia control devices that would cut ammonia emissions from the plant by 90 tons a year. We will take all necessary steps to ensure that companies comply with the Clean Air Act.
Chromic acid is also a respiratory irritant, whose short-term effects include coughing and wheezing.
Noncancerous long-term effects include bronchitis, and ulcerations and perforations of the nasal septum.