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GRAND VALLEY COAL COMPANY <br />P.O. sox 70 <br />• Loma, Colorado 81524-0070 <br />(970) 858-3608 FA7C(970) 858-7690 <br />January 26, 1996 <br />Mr. Dan Mathews <br />Division of Minerals & Geology <br />2148 Broadway; #C-5 <br />Grand Junction, CO 81503 <br />Re: 1995 Annual Hydrologic Report <br />Munger and McClane Canyon Mines <br />Dear Mr. Mathews; <br />• This report on the mine inflows, discharges and probable hydrologic consequences for the next yeaz is <br />This report shall first discuss the effect of McClave Canyon Mine on the local bedrock aquifer, next <br />discuss the effect of Munger Canyon Mine, then give an overview of the surface water system and <br />groundwater monitoring. This report shall conclude with a discussion of the cumulative effect of both <br />mines on the hydrology of East Salt Creek. <br />submitted in compliance with the stipulations of the Mining and Reclamation permits for the mines <br />noted above. The stipulations requve a report for each permit. Since the mines aze in close proximity, <br />the effects can be combined; therefore, two copies of this single report detailing the cumulative effects <br />aze provided. Both of the mines were idle during 1995. <br />McCLANE CANYON MINE <br />Mine History and Production <br />The McClave Canyon Mine began production in 1977. The mine ceased production later that yeaz <br />when a fault was encountered. The mine retrained idle unti11980. From 1977 through 1982 the mine <br />produced a total of 184,365 tons of coal. In 1983 the mine was idled and remained under Division <br />approved temporary cessation until November 1988. In December of 1988; 3,995 tons of coal were <br />mined. In 1989; 125,200 tons of coal were produced. Production during 1990 totaled 208,945 tons. <br />Production for 1991 totaled 194,000 tons of coal. 1992 Production was 7,914 tons. No coal was <br />produced during 1994 and 1995. Amine map for McClane Canyon showing important hydrologic <br />features is included as Figure l . <br />.~ <br />AHR - 95 Page - 1 1 - 26 - 96 <br />