This Administrative Compliance Order on Consent (Order) is entered into voluntarily by the United States Environmental Protection Agency (the EPA) and by Dyno Nobel, Inc. (Respondent) and is issued under the authority vested in the Administrator of the EPA by section 113(a)(3) and (4) of the Clean Air Act (CAA or Act), 42 U.S.C. ? 7413(a)(3) and (4).