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• EXHIBIT 19 - Continued <br />The fourth test, performed by CYCC personnel on October 11, 1979, <br />was a drawdown test of the entire saturated thickness of Che overburden <br />aquifer (75 feet) in the vicinity of the inactive Middle Creek Under- <br />ground Mine. Drawdown was measured in an observation well 190 feet from <br />the pumped well, OS-79-6. Drawdown data from the observation well is <br />plotted on Figure 4, well 08-79-7, of this exhibit. Transmissivity, per- <br />meability and storage coefficient were computed using curve-matching <br />methods (Lohman, 1972) to be 257.0 gpd/ft., 3.4 gpd/ft.2, and 1.12 x 10- <br />5, respectively. The transmissivity and permeability values approximate <br />those computed from the test well on 08-77-58. The storage coefficient <br />indicates artesian conditions exist, which is confirmed by artesian water <br />• levels in monitor wells in the permit area. Therefore, the values ob- <br />tained in this test are considered most representative of the overburden <br />aquifer in the permit area. <br />• <br />