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groundwater zone associated with Stollsteimer Creek. The known uses of the shallow and <br />• deep aquifers within the permit area and adjacent area are limited to domestic use. Well <br />W-7 supplies domestic water to a dwelling. Well W-6 is currently not in use. <br />As previously discussed, baseline groundwater quality analyses commenced in October 1980 <br />and continued on a monthly basis through September 1981. The quality analysis were <br />performed at the groundwater monitoring stations identified on Table 6, Well Completion <br />Information. The sample program included analysis of field data (pH, alkalinity, conductivity <br />and temperature), trace metals, physical parameters and chemical parameters. Analyses of <br />water quality are contained in the various annual hydrologic monitoring reports submitted <br />to the CMLRD. <br />General groundwater quality in the permit area is marginal. Availability of groundwater <br />within the same area is limited. While well W-7 provided a sufficient amount of water for <br />domestic use, its quality characteristics where less than desirable for such a use. The quality <br />characteristics of well W-7 are fair; however, sufficient quantities do not exist that make a <br />substantial use advantage without the installation of storage facilities. <br />The information presented discusses the known extent and presence of groundwater. <br />Groundwater transmissivity and storativiry is affected by physical constraints such as surface <br />topography and subsurface geology. A major groundwater basin is not present. However, <br />the shallow groundwater zone associated with Stollsteimer Creek affects areas beyond the <br />actual valley formed by the creek to a limited extent. The information presented indicates <br />that the creek is recharging the alluvium. Hence, the alluvium recharges the coal-bearing <br />• formation where the formation lies at or below the alluvial ground water zone. This <br />becomes more evident when one examines groundwater encountered during mining. Inflow <br />to the "B" and "C" seam pits was estimated at 200 gallons per minute. This includes an <br />undetermined amount of surface inflow as a result of runoff within the mine area. <br />Therefore, actual recharge is somewhat less. In addition, transmissivity rates are typically <br />lower within a formation. Removal of the formation (coal) increases transmissivity in that <br />the resistance provided by the formation is not longer present. Therefore, it became obvious <br />that the rate of groundwater movement through the formation is quite low. <br />Surface Water <br />The permit area is drained by one perennial drainage. The location of that perennial <br />drainage, Stollsteimer Creek, and monitoring locations are shown on the Regional <br />Hydrology Map (Map 4). The frequencyof monitoring is providedon Table SA, Hydrologic <br />Monitoring. <br />Water flows in Stollsteimer Creek are somewhat variable. Stollsteimer Creek is dammed <br />in a number of locations above the mining operation. The Regional Hydrology Map (Map <br />4) identifies the closest dam at Capote Lake. Adjacent areas, both north and south of <br />Stollsteimer Creek, are drained by numerous ephemeral drainages. Those ephemeral <br />drainages, as well as any drainage from the permit area, is specifically limited to flows <br />generated from precipitation. <br />• 2.04-18a Rev. 12!01/95 <br />