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. iii iiiiiiiiiiiu iii <br />--~w~ _ <br />& Assoc~atu, Inc. <br />a' <br />Environmental Scientists and Engincers <br />October 6, 1995 <br />Ms. Erica Crosby <br />Minerals and Geology <br />1313 Sherman St. Room 215 <br />Denver CO 80203-2273 <br />I~F~FIUEC3 <br />OCT 10 1995 <br />Dwisit,l~ ~~ ~~~~nerals s ueoiogy <br />RE: PCB Discovery <br />Hawksnest Mine <br />WALSH Project No. 2209-010 <br />Deaz Erica: <br />This letter is a summary of our telephone discussion of today. As we discussed, the oil <br />drums and soil at the Hawksnest Mine contain polychlorinated biphenyls (PCBs), which are <br />compounds regulated by the Toxic Substance Control Act (TSCA), and administered by the <br />EPA. When Walsh Environmental, Inc. (WALSH) submitted our proposal, we were under the <br />assumption that there would be no PCBs, and prepared our proposal assuming the material <br />was "hazardous" as defined by Resource Conservation and Recovery Act (RCRA) regulations. <br />The discovery of PCBs, however, requires that the material be disposed at a TSCA-approved <br />facility rather than a RCRA hazardous waste facility. I have received one price quote so far <br />for disposal and transport of the drums of oil from USPCI Laidlaw; they have provided two <br />options. If you select chemical dechlorination and recycling, there would be a $1,100 <br />additional total project cost. If you select incineration of the material, there would be a <br />$2,400 additional total cost for the project. <br />Attached is a PCB waste profile sheet for USPCI and laboratory data. Please review the <br />material and sign the profile sheet as the generator of this material. Retum the profile sheet <br />to this office so we can proceed with disposal at USPCI. As I mentioned earlier, if you wish <br />to modify this procedure prior to shipment of the waste, please let me know. <br />Thank you for selecting WALSH. <br />Sincer ,--~ <br />-~ .-~ - <br />~E ward altzer, CPG 8861 <br />District Manager <br />Enclosures: Lab data, Profile Sheet <br />W'eslern Slope Dirision: <br />225 N. 5th Street .Suite 320. P.O. Box 1942 . Grand Junction, CO 81502. (303) 241-4636. FAX (303) 241-4312 <br />Corporate OlTice: <br />4888 Pearl Exst Grcle .Suite 108 . Boulder, Colorado .80301-2475 . Phone (303) 443-3282. FAX (303) 443-0367 <br />