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- Water samples collected show that the quality of the water is <br />generally the same as for previous years. Storm events large enough <br />to cause runoff in all creeks cause high levels of total suspended <br />solids. These events can also cause increased concentrations of <br />soluble parameters that have been flushed from the normally dry <br />creek beds above the mine. <br />Groundwater <br />Table 5 shows the results of groundwater sampling during 1992; as <br />well as, a comparison to the baseline year 1986. Like last year, <br />the static water level of well GW-4 has steadily fallen and is now <br />near record depth for the period that the wells have been monitored. <br />Conversely, well GW-1 has remained nearly the same. All wells were <br />completely evacuated with compressed air during the late summer. <br />Results of quality sampling are consistent with the results from <br />previous years. <br />PROBABLH HYDROLOGIC C0NSH4UHNCHS <br />The mines will have negligible effect upon the hydrologic regime of <br />fiast Salt Creek. The area disturbed is small, sedimentation and <br />surface water systems have functioned well for over ten years. Most <br />storm events that have exceeded the design criteria required by CMLR <br />have not been a problem for the system to handle. The effect that <br />the mine has on the groundwater hydrology of fiast Salt Creek has <br />been decreased further since water is now being imported to the mine <br />end no further dewatering will take place until water in 001 North <br />Section backs up to the seals and is drained to the water sump. <br />This water will then be used in the mining process. <br />If there are questions or if I can be of further assistance please <br />contact me. <br />Sincerely, <br />~'~j~C~i~~ti"f'~ <br />n M. Walters <br />agar of Mine Services <br />Page - 5 1/29/93 <br />