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III 1111111111111111 <br />999 <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St.. Room 21 5 <br />Denver, CG A0207 <br />Phone: (3031866~35fi7 <br />FAX: 13071 83_'-8106 <br />May 7, 1993 <br />Mr. Murari Shrestha <br />Western Fuels- Utah, Inc. <br />405 Urban Street, Suite 305 <br />Lakewood, Colorado 80228 <br />of Qooh~ <br />R~• }~R' <br />7 <br />~e ' ~ O <br />~'~ 1 <br />Roy Romer <br />Governor <br />Michael B. Long <br />Division Dueclor <br />RE: Deserado Mine (C-81-018) Minor Revision No. 81. Reagent Tank Storage Area <br />Dear Mr. Shrestha: <br />I have reviewed the dimensions of the reagent tank storage structure that has been proposed <br />at the Deserado Mine facilities area. Your letter dated April 22, 1993 states that two tanks <br />will be stored at this location and this structure shall provide total containment. <br />As per your letter the structure will need to be able to hold a total of 11500 gallons. <br />According to our calculations only 10,996 gallons could be contained in the designed <br />structure. This also does not allow for any freeboard within the structure. Western Fuel- <br />Utah is advised to review the Spill Prevention Control and Countermeasure (SPCC) plan <br />approved by Colorado Department of Health to verify if freeboard needs to be designed <br />into this structure. Some freeboard would be advised, since if the containment structure <br />should ever need to hold the designed volume, some amount of freeboard would assure <br />spillage is tninimized. <br />Dimensions the Division used to calculate the volumes are: <br />Containment needed = 7500 gal. + 4000 gal. = 11500 gal. <br />Interior structure dimensions = 30 ft. x 14 ft. x 3.5 ft. =1470 cu.ft. = 10,996 gal. <br />Western Fuels-Utah needs to size this containment adequately to accommodate the total <br />volume of the tanks stored within. If you have any questions, please call. <br />Sincerely, <br />Janei s ' <br />Recl atton pecialist <br />STATE OF COLORADO <br />M:\coal\jhb\ c81018\mr8l.ar <br />