1986-03-03_REPORT - C1981013 (3)

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�� pI DEPARTMENT OF NATURAL RESOURCES ,t nl *� David H.Getches,Executive Director 1 MINED LAND RECLAMATION DIVISION 1876 DAVID C.SHELTON, Director Richard D.Lamm Governor v April 29, 1986 Mr. David Stout Environmental Coordinator Wyoming Fuel Company + _ 12055 W. Second Place P.O. Box 15596 Lakewood, Colorado 80215 ► Re: 1985 Annual Hydrology port, New Elk and Golden Eagle Mines, File Nos. C-81-012 and C-81-013. Dear Mr. Stout: The Division has completed its review of the above referenced report. In general it is quite well done. However, several questions have arisen based on analysis of the data presented. These are as follows: 1 ) Several sites were not sampled in accordance with the approved monitoring schedule. April and June field parameters were not taken on well ACAW-1 . The reason listed was on the Mined Land Reclamation Division (MLRD) letter of September 1985, however this letter is dated after the missing samples. Also, flow was not measured at PRS-2 in February, April , May, and June. No explanation is given. The Division requests that Wyoming Fuel Company (WFC) submit justification for the missing data. 2) Site CCS-2 exhibited marked elevation in TDS and Fe for February, and TSS and Fe for August. WFC should explain these increases. 3) Well CCAW-1 shows a marked-increase for TDS in February and TSS in November. Well PAW-6 also shows an increase in TDS for February, and Well PAW-4 shows an increase in TSS for November. There apprears to be a pattern in "the readings for these wells which. should be addressed by WFC•. The high TSS readings for these wells,mayY indicate that the�-�sampl e is not being filtered. WFC should verify that--the proper laboratory procedures are being followed for ground water sampling. In the future; TSS measurement should be deleted for alluvial we115-i as the, parameter has no meanfng with respect to ground water quality. . 423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567