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iii iiiiiiiiiiiii iii • <br />999 <br />DIVISION OF MINERALS AND GEOLOGY <br />Cepartmem of Natural Resources <br />1313 Sherman SL, Room ? 15 <br />Denver, Colorado 80_'03 <br />Phone: 1303)866-3567 <br />March 16, 2001 <br />Ron Thompson <br />Property Manager <br />Basin Resources, Inc. <br />14300 Highway 12 <br />Weston, CO 81091 <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />R E C L A M A T I O N <br />MI NING•SAFETY <br />Bill Owens <br />Governor <br />Creg E Watcher <br />E.ecwive Direcwr <br />micha.+18 Lang <br />Drvrs~on Dueaor <br />RE: 2000 Annual Hydrology Report, Golden Eagle Mine, #C-81-013 <br />Dear Mr. Thompson: <br />The Division has completed review of the 2000 Annual Hydrology Report (AHR) for the Golden <br />Eagle Mine. <br />Monitoring Frequency <br />All site visits were conducted as required. One general observation was noted regarding <br />reference to permit maps. The AHR text references Map 8 of the permit document. Map 8 is a <br />soils map in the Golden Eagle permit. The hydrology maps are Maps 7A and 76 of the permit. <br />Please correct this reference in the 2001 AHR. <br />Surface Water Quantity and duality <br />Two stations on the Purgatoire River are monitored for flow and field parameters on a quarterly <br />basis, and a lab sample is analyzed on an annual basis. PRS-2 is located upstream of all <br />Golden Eagle mining activities and PRS-3 is located downstream of all mining activities. One <br />water sample was acquired at each of these locations, in accordance with the annual sample list <br />on page 2.05-47d, Table 23 of the permit. Three other water samples were taken and tested for <br />the short list (p. 2.05-47d). For the water year, flow is nearly identical between the two sites. <br />Excluding questionable June TDS at both sites, salinity is effectively unchanged upstream to <br />downstream. Overall water quality is acceptable, according to the standards, for all uses. <br />Ground Water quantity and Quality <br />Data collected during 2000 supports last year's observation that overburden ground water levels <br />are recovering. All overburden bedrock water levels continue to recover. <br />Well Zone Distance from mined area 1997 1998 1999 "'~~ <br />NM-20 Ovbn 6000 ft 363 ft 350 ft 349 ft 349 ft <br />NM-21 Coal 4000 ft 762 ft 755 ft 740 ft 739 ft <br />NM-22 Ovbn 10,000 ft 440 ft 419 ft 414 ft 407 ft <br />SF-2 Ovbn 3000 ft 681 ft 677 ft 675 ft 656 ft <br /> <br />STATE OF COLORADO <br />