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As can be seen from Table 3.6.2-1, the various analyses from the <br />loadout area are very similar. The basic water type in the loadout <br />area is a calcium bicarbonate water. <br />Ground Water Use <br />The three private wells in the immediate vicinity of the loadout faci- <br />lity are owned by Anschutz Coal Co. (Drawing D-2-2). <br />Hydraulic Characteristics <br />A single drawdown test was performed on Hole L-1. A 3 hp submersible <br />pump, the largest sumersible pump available for this hole size, was <br />installed on May 22 by Ron Samuelson Pump Company. The hole was <br />pumped at the maximum possible rate of 64 gpm. The drawdown cone was <br />observed to reach nearly-stable conditions within 2 minutes. Total <br />drawdown after 2 hours of pumping was 0,7 feet, as shown in Exhibit 3, <br />Appendix 3-S. A Jacobs straight-line plot yields a transmissivity of <br />• 51,200 gpd/feet. This was checked with a Theis calculation of about <br />50,000 gpd/feet. <br />Storativity cannot be calculated directly from the aquifer test as <br />performed. Due to the uniformity of shape and size (2 to 4 inches) of <br />the aquifer material, however, a reasonable estimate of Storativity <br />may be made. This estimated value is 0.3, which is near the upper <br />limit for alluvial aquifers. <br />Discharge and Recharge <br />The alluvial aquifer beneath the loadout facility is part of the <br />Roaring Fork surface and ground water system. Ground water that flows <br />through the aquifer is directly related to the spatial occurrence of <br />the gravels, the gradient of the river valley, and the river level. <br /> <br />3-89 <br />