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:k <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Depanment of Natural Resources <br />1 J 13 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (3031866-7567 <br />FA%: (3071 8J2-8106 <br />July 2, 1997 <br />Mr. Forrest Luke <br />Environmental Manager <br />Trapper Mine <br />P.O. BOX 187 <br />Craig, Colorado 81626 <br />Roy Romer <br />Governor <br />lama 5. Lochhead <br />EieCUlive Director <br />Enichael B. Long <br />Division Dire<IOr <br />RE: Technical Revision No. 76, 1996 Annual Report, Hydrology Adequacy Review, Trapper <br />Mine, Permit No. C-81-010, Trapper Mining, Inc. <br />Deaz Mr. Luke: <br />The Division has completed its review of the hydrology section of the 1996 Annual Report. The <br />remainng portions of the 1996 Annual Report will be reviewed at a later date. The Division has <br />the following comments or questions concerning the hydrology section. <br />Water Monitoring Plan Requirements <br />Surface Water <br />The approved surface water monitoring plan is located on pages 4-241 b and 4-241 c of the <br />permit. The 1996 surface water monitoring data is located in Appendix C of the 1996 Annual <br />Report. It appears that Trapper performed the required surface water monitoring frequency and <br />sampled the required chemical pazameters, although the Division has the following concerns: <br />For NPDES site 006, West Buzzazd, on page C-113 of the annual report, there is only <br />data for one week in June of 1996, and no data is listed for the last quarter of 1996. Even <br />though there may not have been any flow during those periods, the data should still be <br />provided showing zero flow. Please provide a complete listing of NPDES 006 data. <br />2. For NPDES site 008, Ute, on pages C-123 and C-124 of the annual report, there are no <br />data for the first and last quarters of ]996. Similar to question no. 1, please provide the <br />missing data. <br />For NPDES site 005, Coyote, on page C-100 of the annual report, boron is missing for <br />the firs[ half of 1996 for List A-3. Also, there are ten pazameters required for List A-3 that <br />