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iiiiiiiiiiiuiiiiii <br />STATE OF COLOIZADU <br />Roy Romer, Govei <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />DATE: June 6, 1989 <br />T0: Tony Waldron <br />FROM: Berhan Keffelew ~ - <br />RE: 1988 Annual Hydrologic Report, Eagle No. 5 and No. 6 Mines, <br />Permit File No. C-81-044 <br />I have reviewed the Annual Hydrologic Monitoring Report for the above <br />mentioned mine. <br />On the questions raised in 1987 regarding the accuracy of the No. 5 Mine <br />discharge meters, the company will provide the water quality data once the <br />testing and evaluation is completed at a later date. <br />For the most part, the required data for the water quality appears to be <br />provided. However, it would help a lot if sample results for the specific <br />sample dates were provided rather than the mean and standard diviation for the <br />year. Even some of the raw water quality data provided does not have the <br />complete results for the specific sample dates. <br />Some questions I have on the water quality are: <br />Well 81-O1 (Middle Sandstone) <br />Why was 3/88 the last date for which water quality data was provided? <br />Wells AVF3 and AVF 6 (Williams Fork Alluvium) <br />The Total Dissolved Solids have increased to 1500 mg/1 and 1310 mg/1 <br />respectively. These figures are 22-35% higher than previous years. <br />since the increases are mostly due to calcium, magnesium, sulfates and <br />chloride I tend to agree with the report that the increase could not be <br />attributed to mine discharge. <br />Since there appears to be no inaccuracy in the analysis of the water quality <br />data, the Division would appreciate any help the mine can provide us in <br />identifying the cause of these increases. <br />6867F/scg <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 8663567 <br />