Laserfiche WebLink
JUN-21-1999 11:05 GENERAL CHEMICgL 201 515 1985 F'. 01iby <br />~• a <br />2 <br />Nahcolite Minerals); American Soda proposes to use ei single well <br />well vertical cavity process to recover disseminateci nahcolite <br />reserves. During the initial operation period, twelsty-six (26) <br />wells may be operated concurrently for a limited tune. After the <br />initial operating period, approximately~l5 wells will be operated <br />concurrently. Wells will be taken out of service r.+hea the value <br />of the energy input exceeds the value of the mining output. <br />Each well will have an injection zone interval <br />approximately 800 feet below the Dissolution Surface, generally <br />located from about 1,400 to 2,300 feet below ground surface. <br />Only 25 to 30 percent of the subsurface material located in the <br />injection zone will be removed by mining, hence solution mining <br />will simply create a more porous zone and the remai.aing 70 to 75 <br />percent of the original volume will consist of oil shale and <br />other insoluble rock. <br />The principal products that American Soda iat:enda to <br />produce from ;,taheolite (NaHCO,) are sodium carbonate (also called <br />soda ash) and sodium bicarbonate (also called bak:i.ng soda). <br />Soda ash ie used is several industrial processes including the <br />manufacturing of glass, various chemicals, pulp anti paper, soaps <br />and detergents, water treatment products, cleaning preparations, <br />and other products. Sodium bicarbonate is used as a pollution <br />control agent (flue gas desulfurization and acid n~eutralizationl <br />and in the manufacturing of food and flour, pharma.:euticals and <br />antacids, fire extinguishers, various household products, <br />labarato=i+ reagents; and many other products. <br />y~' EPA is hereby serving notice of intent to issue a Class III <br />vIC Area Permit to American Soda for the extraction of nahcolite <br />by use of a solution mining process. 8PA has scads a preliminary <br />determination to approve the permit application sad by doing so, <br />it hoe determined that underground sources of drinking water <br />(U5DWS) will be protected, <br />PUBLIC COMMETITS <br />Information submitted by the applicant, as well as the <br />draft permit prepared by BPA, are contained in the: administrative <br />record for American Soda. Thin information is avacilable for' <br />public inspection at the following locations: <br />U.S. Environmental Protection Agency <br />Region VIII, BP-W-GPi <br />UIC eate~io 'on <br />Attn: Sdwia 80 1~ <br />999 18th Street, e 500 \`~~ <br />Denver, Colorado 80202-2466 ~w X <br />Telephone 303.312.6137 `j <br />9:00 A.M, to 4:00 P.M. J <br />