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not considered to be reliable. <br /> 5. 5 Recharge <br /> iThe recharge potential of the water bearing layers in <br /> the outwash and landslide deposits was estimated using an <br /> average annual precipitation (35 inches) in the study area and <br /> an estimated rate of infiltration ( 5% of the annual <br /> precipitation) . For an approximate area of 207.8 acres, the <br /> recharge potential was calculated as 18.8 gpm. <br /> 5. 6 Discharge <br /> As can be seen from the water table interpretation, pre- <br /> sented on Plate 1, ground water from the outwash deposits dis- <br /> charges into the alluvial deposits of Coal Creek. At two lo- <br /> cations (S-2 and S-4) , springs have been identified ; accord- <br /> ing to local residents' information, spring S-3 is temporary <br /> while spring S-4 is permanent. <br /> 6. 0 SURFACE AND GROUND WATER QUALITY <br /> Data from the study area were obtained from the <br /> �1 monitoring of several sampling locations. Quality data of two <br /> monitoring stations , Sutey No. 1 and Sutey No. 3, are avail - <br /> able as well as results of analyses from the sedimentation <br /> pond below the existing waste disposal site (Sample No. 396 - <br /> 001) . The locations of both monitoring stations S-1 and S-3 <br /> are indicated on Plate 1. Ground water samples were obtained <br /> from monitoring wells W-1, E-1 and E-2. <br /> A set of laboratory analyses of samples taken quarterly, <br /> between May, 1983 through January, 1984, is available for the <br /> water quality evaluation. The results are presented in Tables <br /> 2 and 3. <br /> The surface water in the study area is -f a calcium- <br /> magnesium sulfate type with a range of total dissolved solids <br /> between 480 to 578 mg/l . <br /> The ground water in the study area is very similar to <br /> the surface water with a range in total dissolved solids <br /> between 418 to 602 mg/l . The highest concentration of total <br /> dissolved solids, bicarbonates and sulfates was observed in a <br /> r sample collected in October, 1983, during the dry season. <br /> L <br /> A high concentration of sulfates (up to 140 mg/1 ) can be <br /> attributed to the presence of Mancos Shale in the area . <br /> 18 <br /> GE041YDRO CONSULTING,INC. <br />