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• Hydrologic Monitoring A[tivitiu 1990 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. Measured parameters included pH, conductivity, temperature, total dissolved solids, total suspended solids, total iron, and total manganese. Sampling results are summarized in Appendix D. Minimum and maxi- mum information for the baseline monitoring period is compared with water year 1990 data for the Sylvester Gulch and North Fork Upper sta- tions in Appendix E. Spring Water Monitoring Seven springs were monitored during the 1990 water year (Table 2). Their locations are shown on Exhibit I. All known springs in the lease area are shown on Exhibit 2.8.1.B. in Volume 3 oC the M and R Plan. In accordance with U.S. Forest Service (USES) stipulations, a map of USES water resources has been included as Exhibit II1. Table 3 summarizes the resources. Some of the USES water resources are springs. No changes in the USES Water Re- sources Map are necessary for 1990 because no new rights were filed for or new uses made in f990 in the Icase area. Seasonal measurements (three times per year) of pH, conductivity, temperature, total dissolved solids, total suspended solids, total iron, and total manganese were taken at each of the seven springs. Measured (lows, field parameters, and the results o[ laboratory analyses are presented in Appendix F. Maximum and minimum comparisons are presented in Appendix E. Bar graphs depicting spring }lows Crom 1979 to the present have been included as Appendix G. Of the seven springs, only springs G-14, G-16, and G-20, were sampled during 1990. Flows at the other four springs were either nonexistent or insufficient for sampling during all three sampling periods. Consequently, water quality data are available only for springs G-14, G-16, and G-20. Groundwater Monitoring Twenty-three wells were monitored during the 1990 water year (Table 4). Their locations are shown nn Exhibit 1. Sampling frequency for water levels and wafer quality was 3 times per year. Monitored parameters included water Icvel, pH, conductivity, temperature, total dissolved solids, 'fable 2 Summary of the Spring Monitoring Program at the Mt. Gunnison No. 1 Mine Location Frequency of Discharge Measurement fir,, y< Frequency of Water Quality Measurement Springs Above the " F' Seam in the North Fork Drainage Basin G-12 3 times per year r 3 times per year G-14 3 times per year F 3 times per year G-16 3 times per year F 3 times per year G-22 3 tinter per year F 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 G-20 3 times per year 3 times per year 3 times per year