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Hl~diologic Monironng Activities • ary, but it was mid-April before all stilling wells had [hawed. Debris buildup in [he flumes was minimal during 1992 and no data were lost due to debris. In addition [o the five MCC monitoring locations, flow data are available from two USGS monitoring stations. These stations are Minnesota Creek downstream of Dry Creek and the North Fork of the Gunnison River near Somerset, Colorado. The North Fork station is located approximately ~/.- mile upstream of the mine site. Because the USGS gauging stations are heated, they were unaffected by freezing temperatures. Data for the 1992 water year for these sites are presented in Appendix B and Appendix C, respectively. Seasonal (three times per year) water samples were taken at all surface water monitoring stations except the USGS North Fork station which is a flow data point only. Measured parameters includ- ed pH, conductivity, temperature, total dissolved solids, total suspended solids, total iron, and total manganese. Sampling results are summarized in Appendix D. Minimum and maximum information for the baseline monitoring period is compared with water year 1992 data for [he Sylvester Gulch and North Fork Upper stations in Appendix E. Spring Water Monitoring Seven springs were monitored during the 1992 water year (Table 2). Their locations are shown on Exhibit 1. All known springs in the lease area are shown on Map 34 in Volume 5 of the M and R Plan. [n accordance with U.S. Forest Service (USES) stipulations, a map of USES water resources has been included as Exhibit 2. Table 3 summarizes the resources. Some of the USES water resources are springs. No changes in the USES Water Resources Map are necessary for 1992 because no new rights were filed for or new uses made in 1992 in the lease area. Two USES water resources (131 and 139) overlie the current permit area, but are not in areas planned to be mined. Also, the overburden is in excess of 300 feet under these resources and no mining related impacts are anticipated. Seasonal measurements (three times per year) of pH, conductivity, temperature, total dissolved solids, [oral suspended solids, total iron, and total manganese were taken at each of the seven springs. Measured (lows, field parameters, and the results of laboratory analyses are presented in Appen- dix F. Maximum and minimum comparisons are Table 2 Summary of the Spring Monitoring Program at the West Elk Mine C.ocation Frequency of Discharge Measurement Frequenry of Water Quality Measurement Springs Above the "F' Seam in the North Fork Drainage Basin G-12 3 times per year 3 times per year G-14 3 times per year 3 times per year G-16 3 times per year 3 times per year G-22 3 times per year 3 times per year G-24 3 times per year 3 times per year Springs in or Below the "F' Seam in the North Fork Drainage Basin G-la 3 times per year 3 times per year G-20 3 times per year 3 times per year Sa~wtt a s Ir7nt •