Laserfiche WebLink
STATE OF COLORP~DO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanmem of Natural Resources <br />1313 Sherman St., Room 21 S <br />Denver. Colorado 80203 <br />Phone:1303)8fi8-3567 <br />FAX: (303) 832-8106 <br />SeptembeY 26, 1994 <br />Roy Romer <br />Mr. Bryce R. Romig ewemor <br />Climax Molybdenum Company la mes S. Lochhead <br />C11max Mine Ezecative Director <br />Climax, CO 80429 Michael B. long <br />Division Oirecror <br />RE: Storke Yard Complex Debris Disposal, Climax .line, <br />Permit No. M-77-493 <br />Dear Mr. Romig: <br />The Division has reviewed the summary of your plan for on-site disposal <br />of debris generated by building demolition at the Storke Yard location. <br />Building demolition is required for final site reclamation, and as you <br />observe in your summary, on-site debris disposal is anticipated in the <br />approved reclamation plan. Certain environmental controls must be in <br />place for any on-site waste disposal to be approved by the Division at <br />mine sites. These controls, as they relate to the Storke Yard proposal, <br />are listed below: <br />1. Site access restrictions to prevent unauthorized dumping. The <br />Division accepts site access restrictions already in place at the Storke <br />Yard as being adequate. <br />2. Screening of debris for hazardous materials, and special handling <br />of hazardous materials identified. The Division accepts the asbestos <br />removal program documented in the summary report, and the sampling and <br />assessment of painted surfaces and visual screening for treated lumber <br />also documented, as being appropriate and adequate measures for this <br />site. The Division believes that leaching tests using- sulfuric acid <br />would be more representative of conditions at most mine sites than TCLP <br />tests, however, since the TCLP tests have already been conducted, they <br />will be accepted for Storke Yard debris disposal. <br />3. Protection of surface and ground water. Capping and revegetation <br />of the debris disposal location as described in your summary will be <br />adequate to protect surface water. The disposal of the debris in an <br />existing Swale, which is above the groundwater table, and the leachate <br />collection system described in your summary report, will be adequate to <br />protect groundwater, however, the Division will place certain <br />requirements on the preparation of the disposal site to ensure that the <br />leachate collection system will function as designed, thus ensuring that <br />groundwater is protected. The requirements are listed below: <br />a) The sides and bottom of the disposal trench need to be <br />