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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 C O L O RA D O <br />Denver, Colorado 80203 DIVISION O F <br />Phone: (303) 866-3567 bl 1 hl ~ A L $ <br /> <br />FAX: (303) 832-8106 <br />GEOLOGY <br /> 0.ECLAMATION•NINING <br /> EAf ETY•S<IENCE <br />Mazch 22, '1,005 Bill Owens <br />Governor <br />Russell George <br />Executive Director <br />Mr. Albert R Frei, Jr. Ronald w. cottony <br />Albert Frel RL SDns, IT1C. Division Director <br />P.O. BOX 700 Natural Resource Trustee <br />Henderson, CO 80640 <br />RE: Walstrum Quarry, Adequacy Review -Technical Revision No. 8, Permit M-1983-033 <br />Class: Revision Type-Seq.: TR-8 (Fuel Storage Plan) <br />Dear Mr. Frei: <br />The Division has reviewed your technical revision request fora "Fuel Storage Plan" for the <br />Walstrum Quarry as requested in the Division's January 5, 2005 inspection report. The <br />adequacy concerns listed below will need to be resolved prior to the Division's approval of your <br />revision request. We request that you provide a response on or before the April 8, 2005 decision <br />date. Please contact us if you need additional time to prepaze an adequacy response. <br />1. Your proposal indicates that you will be building the storage containment berm out of road <br />base material available on site at the Walstrum Quarry. Please specify the percentage of clay in <br />the material to be used, the compacted thickness when complete, the number of lifts and <br />thickness of lifts to be applied, the equipment that will be used to achieve the desired <br />compaction, and the number of passes required to achieve the desired compaction. Please <br />address. <br />2. It appeazs that the location of the fuel storage containment area may change as various phases <br />of the mine plan aze completed. Please provide a plan view map of the quarry showing the initial <br />location of the fuel storage area, and height and length from the quarry entrance. <br />3. Please describe how the containment surface and surrounding berm will be constructed to <br />ensure a level containment surface and berm of equal height around the perimeter. The Division <br />recommends that the operator survey the corners and center of the containment surface to ensure <br />a flat surface, and survey the berm crest to ensure a uniform, adequate berm height. Please <br />respond. <br />4. Given the volume of petroleum products to be stored within the containment azea, the Division <br />highly recommends that an initial "test run" be conducted with water to detemrine the adequacy <br />of the containment area and berm construction prior to relocating petroleum products to the <br />Office of Office of Colorado <br />Mined I and RerUmatinn Artive and Inartive Mines Geolo¢ical Survev <br />