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iii iiiiiiiiiiiiiiii <br />999 <br />TW6NTYM166 <br />~ COAI. COMPANY <br />A Cyprus Amax Company <br />Twentymile Coal Company <br />29515 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />970-879-3800 <br />August 8, 1997 <br />RECEIVED <br />AUG 131997 <br />Dan Henlandez <br />Environmental Protection Specialist <br />Colorado Division of Minerals and Geology <br />1 313 Sherman Street, Room 215 <br />Denver. Colorado 80203 <br />pivision or minerals ~ Geology <br />Re: Twentymile Coal Company - Foidel Creek Mine: Permit No. C-82-056, Second <br />Quarter, 1997 Sedimentation Pond Inspections <br />Dear Mr. Hernandez; <br />Sediment Pond inspection reports were not completed for the sediment ponds associated <br />with Permit No. C-82-056 for the second quarter of 1997. Twentymile Coal Company <br />(TCC) feels that the requirements of Rule 4.05.6(13) were met for the second quarter; <br />however. the report forms were not completed due to an oversight. <br />The ponds associated with Permit No. C-82-056 are visited on a weekly basis to collect <br />samples as required by NPDES permits CO-0027154, CO-0036684, and CO-0042161. <br />Visual inspections with regard to any structural problems, erosion, or hazardous <br />conditions would be noted and repairs scheduled for the pond, if necessary. A registered <br />professional engineer, experienced in the construction of sedimentation ponds, visited <br />each of the ponds associated with Permit No. C-82-056 at least ]0 times during the <br />second quarter. <br />In addition to the NPDES sample collection, weekly inspections of Pond G are conducted <br />to comply with the requirements of 30 CFR 77.216-3. These inspection forms are kept <br />on file at the TCC Environmental Department offices. <br />A partial Coal Inspection was performed on April 23, 1997 by Dan Hernandez and Byron <br />Walker with Tavis Rogers. Karl Koehler, and Rick Mills as representatives for TCC. <br />Maintenance issues noted with respect to the sediment ponds were: erosion at the inlet of <br />Pond F, silt fence maintenance below Pond D, and [hat the V-notch weir had not been re- <br />set at Pond F. Ponds F and D are covered under Permit C-8]-071 and the maintenance <br />issues pointed out in the April inspection have either been completed, or will be <br />completed. A complete Coal Inspection was performed on June 6, 1997 by Janet Binns <br />with Tavis Rogers as the representative of TCC. No problems were noted with regard to <br />the ponds during this inspection. <br />