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<br />III IIIIIIIIIIIIIIII <br />999 <br />STATE OF COLORADO <br />Bill Owens, Governor <br />lane E. Norton, Ezecu[ive Director ~~pF~CO(p~ <br />Dedicated to protecting and improving the health and environment o/the people of Colorado Ne0 <br />4300 Cherry Creek Dr. S. Laboratory and Radiation Services Division ` ` <br />Denver, Colorado 80246-1530 8100 Lowry Blvd. RECEIVED ~• •• <br />Phone (303) 692-2000 Denver, Colorado 80230-6928 ta76 <br />TDD Line (303) 691-7700 (3031692-3090 Colorado Deparunenr <br />Located in Glendale, Colorado JAN 2 5 2002 of PubGeHealth <br />http://www.cdphestatero.us and Environment <br />Division of Minerals 8 Geol x~~~ <br />Mr. Dan Hemandez <br />Division of Minerals & Geology January 22, 2002 <br />Department of Natural Resources <br />1313 Sherman St. Rm. 215 <br />Denver, CO 80203 <br />Re: Air Pollution Assistance Request Regarding Blasting Activities <br />Mr. Hemandez: <br />After reviewing your letter dated January 17, 2002, regarding a citizen's concern about the <br />potential toxicity of air pollutants generated from the combustion of explosives used in blasting activities <br />by Lorencito Coal Company (Lorencito), [he Air Pollution Control Division (Division) has determined the <br />following: <br />1. The combustion process of the explosives used at Lorencito, ammonium nitrate and fuel oil <br />(ANFO), produces essentially the same emissions as those produced by more common sources of <br />combustion e.g. fire] burned in an automobile's internal combustion engine, fuel burned in a <br />residential hot water boiler or furnace, or any other combustion source. <br />2. The combustion of fuel material produces a wide variety of emissions. The concentration of <br />emissions produced depends on several variables; the type of fuel, the concentration of reactants, <br />and the temperature and pressure of the combustion environment. Fuel burned in ambient air will <br />produce mostly carbon dioxide and water, as well as some by-products of nitrogen oxide. <br />3. According to the Environmental Protection Agency's emissions factors listed in AP-42, the <br />detonation of ANFO produces 17 pounds of nitrogen oxides (NOx) per ton of explosives. The <br />primary nitrogen-containing by-product of ANFO detonation is nitrogen oxide, a colorless gas. <br /> <br />