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Surface water samples from East Salt Creek during the 1998 water year were obtained in all <br />four quarters. Results from all water samples collected in 1998 are presented in Table 4. The <br />results from samples collected from East Salt Creek above and below the mine site are generally <br />the same for all pazameters. Note that when the mine was placed in Temporary Cessation the <br />sample list was reduced as allowed by the mine permit. <br />The sample sites on McClane Creek were dry all four quarters. Munger Creek was only <br />found to be flowing during the first quarter. <br />Gsonndwater <br />Table 5 shows the results of groundwater sampling during 1998. The average static water <br />level for the baseline years of 1981 and 1986 is also shown. Results of quality sampling are <br />consistent with the results from previous years. GW-4 in close proximity to a hay field that is <br />irrigated during dry periods and in danger of being eroded with an oxbow, has been replace with <br />GW-3. GW-3 is located adjacent to the road south of GW~ and should be outside of the <br />influence of the irrigation of the hay field. Refer to Figure 4.2-2 of the McClane Canyon Permit. <br />DMG has approved this substitution. <br />P_ and Discharges <br />There were no discharges from either the sediment pond at McClane or the sediment trap at <br />Munger Canyon. <br />PROBABLE HYDROLOGIC CONSEQUENCES <br />• The mines will have negligible effect upon the hydrologic regime of East Salt Creek. The area <br />disturbed is small, sedimentation and surface water systems have functioned well for over ten <br />years. The inherent poor quality of surface water in the area is the result of site specific <br />environmental factors not from any impact caused by the mines. <br />Most storm events that have exceeded the design criteria required by DMG have not been a <br />problem for the system to handle. The effect that the mine has on the groundwater hydrology of <br />East Salt Creek has been decreased further since water is now being imported to the mine and no <br />further dewatering will take place until water in 001 North Section backs up to the seals and is <br />drained to the water sump or water is intersected elst of the current workings. <br />If there are questions or if I can be of further assistance please contact me. <br />Sincerely, <br />John M. Walters <br />Manager of Mine Services <br />• <br />AHR - 98 Page - 4 11 - 23 - 98 <br />