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Two walla, YGAL15 and i6, monitor water quality in the Craeay Creak alluvium. Wall YGAL15 • <br />displays an increasing TDS trend, although no mining has occurred yet in this basin. Well <br />YCAL16 displays a decreasing TDS trend. <br />Four calla; YSAL1, 3, S, and 12; monitor rater quality in the Saga Creek alluvium. <br />Monitoring of these calla in not required by the Yoast Mine permit, since no mining ie <br />scheduled in this basin until 2000. <br />Wadge Overburden. Well YOy2B monitors rater quality in this unit. It displays an <br />increasing TDS trend. <br />Wadge Coal. Well YW28 monitors rater quality in this unit. It displays a level TDS <br />trend. <br />Wadge Underburden. Well YWU28 monitors water quality in this unit. it displays a <br />deexeaeing TDS trend. <br />Comparison of Ground Water Quality to Wataz Use Standards. SCC has compiled lists of • <br />standards for irrigation (Table 5) and livestock (Table 6). Thaae lists era campoaed <br />mostly of Colorado Department of Aaalth (COON) standards, although other agencies' <br />standards have been used if they are more stringent or if the CDOA has no atandazd for a <br />particular parameter. Sae the Yoast dine PAP, Tables 7-21 and 7-23, Por a more detailed <br />explanation of these standards. <br />Table 7 provides a comparison of ground water quality to irrigation standards. Standards <br />that were exceeded during this reporting period are cadmium (1 wall) , iron (1 well) , <br />manganese (6 walla), dissolved solids (1 well), and sulfates (S walla). <br />Table S provides a comparison of ground water quality to livestock standards. No <br />standards vase exceeded during thin reporting period. <br />in the Probable Hydrological Coneaquances (PRC, Tab 17) section of the Yoaet Mina PAP, <br />predictions rare made as to the expected TDS increases to be observed at various <br />monitoring wells. The following table outlines these predictions along with this year's <br />observed average values. • <br />4 <br />