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underground mine. Pond M3N (Site 24) is subject to the effluent limitations detailed in NPDES Permit No. <br />• COG-850013. Pond M3S (Site 76) is locaied south of the confluence and east of Middle Creek [o control <br />runoff from reclaimed areas east of Middle Creek. Pond M3S (Site 76) is subject to the effluent limitations <br />detailed in NPDES Permit No. CO-0027154. <br />Sites 24 and 76 (See Tables l4, 14a, IS and ISa) discharged only in response to spring runoff during the <br />1994 Water Year. Discharges occurred in conformance with the established NPDES effluent limitations, <br />however, flow measurements during the discharge events were obtained and recorded incorrectly; velocity <br />readings were recorded but corresponding cross-sectional area measurements were not. This circumstance <br />was reported the with appropriate DMR submittal during the spring of 1994. Figures 28 and 29 provide <br />graphical representations of the field conductivity values measured for these sites during the 1994 Water <br />Year. All values were within the expected range of readings previously experienced. <br />No significant hydrology impacts attributable to activities or developments at Mine No. 3 are observed to <br />have occurred during the 1994 Water Year. Spoil spring discharges remained negligible and, therefore, did <br />not constitute a significant portion of discharge From the Mine No. 3 area with any potential to impact off- <br />• site areas. The previously discussed trends of elevating field conductivity measurements and TDS <br />concentrations in the surface water sites and closely associated alluvial wells are likely attributable to <br />activities occurring upstream from Mine No. 3. CYCC will continue to carefully monitor these trends. No <br />degradation of water quality or diminution of water quantity is evident in comparing surface water sites <br />above and below Mine No. 3. Discharges from ponds M3N and M3S occurred in conformance with <br />applicable NPDES permit limitations and therefore did not constimte significant impacts to Middle Creek <br />during the 1994 Water Year. Water levels and chemical equilibrium in the spoil and overburden wells are <br />not indicative of problematic impacts and continue to vary within established normal ranges. <br />• <br />-7- <br />