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s <br />portion of the mine is relatively dry, while the western portion of the <br />mine produces the majority of the flow. The flow is e~ssociated with the <br />same areas as described in the prior study. <br />It appears that the fault system in the west side of the No. 5 Mine is <br />producing water at about the same rate as measured during the previous <br />year. Although unable to directly measure the inflow in the west portion <br />of the No. 5 Mine, estimates as described above and shown on Table 8 - <br />1987 Inflow With West Side Inflow Estimates, confirms t;nis statement. <br />A study of the results indicate that a number of uncontrollable variables, <br />both in the ground water system itself (i.e. modified local gradients), <br />and in mine conditions (flooded or sealed areas) manifest themselves <br />during the study. The resulting variation points out the difficulty in <br />conducting inflow studies on an annual basis to address the MLRD's <br />contention that it is imperative to identify what areas of the mine are <br />drying up or have started producing water. The inflow predictions Empire <br />made in the permit application are reasonable, and Empire provided for an <br />approach for conducting additional inflow studies if needed. This was <br />based upon the commitment to conduct inflow studies if the mine discharge <br />exceeded the predicted discharge (which is the mine inflow) by 20 percent. <br />This recognizes the fact that perturbations in the discharge rate will be <br />caused by intercepting significant quantities of water, and this will <br />require a new inflow study. It is Empire's request, that the requirement <br />to do an annual inflow study be abandoned, unless the discharge in the <br />Eagle No. 5 and No. 6 Mines exceed 20 percent of the annual projected <br />discharge made in the approved permit application. If the annual <br />projected discharge is exceeded by the 20 percent, a study as outlined in <br />Stipulation Number 3 of the Permit issued October 19, 1983 would be <br />required. Discharge volumes from the No. 5 and No. 6 Mines would be <br />submitted to CMLRD within the Annual Hydrologic Report. <br />9 <br />