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~~~ ~~~~~~~~~~~~~ III 999 BASIN RESOURCES, u+c. a subsidiary of ENTECH, Inc. Mr. Joseph Dudash Colorado Division of Minerals and Geology 1313 Sherman, Room 215 Denver, CO 80203 RE: New Elk Mine; Permit C-81-012 NOV C-93-42 Dear Mr. Dudash: 14300 Highway 12 Weston, Colorado 81091 (719) 868-2761 FAX (719) 868-2275 November 22, 1993 !?~r~_ /1,~D Lr'': acv, c. NOV 2 u 199 f Dili; r0p c, r:~rne~a~s o - ~_~ N~V 29 19gaw ,r~,,,,, ~ ~, `r!°9Y This is in response to your inquiry concerning the hydrologic information that is required for abatement of violation NOV C-93- 042. I have broke down the responses according to the attachment sequence in the original violation. Attachment I: Weekly Field Monitoring The majority of the' deficiencies identified resulted in the lack of information concerning discharge analysis for sediment ponds or mine discharge points. In most cases, the information was not available due to a lack of discharge at that location. During this period in time, if there was no discharge, a blank was left on the weekly report sheet. All discharges were recorded and pertinent information was attained. The remaining incidents of no information involve sites which are not active such as pond 005, or in which sampling is required only monthly, site 080. Attachment II: Monthly Field Data The primary deficiency for these sites involve lack of flow measurements. Through an earlier verbal agreement with parties of the state and the mine, it was determined that staff gauge readings at these locations would suffice for actual flow measurements. No definitive flow measurements were taken relying instead on the staff gauge readings. The staff gauge readings give a relative flow comparison. All other data identified in this section can be found in the Annual Hydraulic Report.