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b. SWU6 and SWU11 (both Wadge Underburden) continue an increasing trend; the rate <br />of increase appears to be constant over the period of monitoring (1981-2009). Coal <br />removal upgradient of these wells was prior to 1981. <br />C.' SWU8P1 (also Wadge Underburden) continues a decreasing trend; again, the rate of <br />decrease appears to be constant. The decreasing trend began in mid-1988; coal <br />removal upgradient of the well occurred in 1981 and 1982. <br />The Division also observed that water levels in Wolf Creek Coal Well 10 (SWC10) have steadily <br />increased from the significant drop from 1989 to 1990, coincident with mining of the Wolf <br />Creek Coal immediately downgradient of the well. <br />4. Alluvium: <br />a. TDS in the Grassy Creek alluvium is increasing at both the upstream and downstream <br />monitoring locations. TDS levels are, however, well below the standard established for <br />SGAL70, the groundwater point of compliance. <br />b. TDS in Bond Creek and Cow Camp Creek tributaries to Fish Creek exhibit decreasing <br />TDS. The Fish Creek alluvium was sampled for the first time this year at SFAL72; TDS <br />was well below the limit for this groundwater point of compliance. <br />5. TDS is decreasing in all of the groundwater wells in the Wadge and Wolf Creek overburden, <br />coal, and underburden. TDS values have decreased at Spoils Wells 26 and 61, where mining <br />occurred prior to 1977 and 1978, respectively. <br />6. Groundwater points of compliance: <br />a. SGAL70 (Grassy Creek Alluvium): All parameters were at or below the compliance <br />standards. <br />b. SFAL72 (Fish Creek Alluvium): Iron exceeded the standard (0.35 mg/1) both times the <br />well was sampled (3.52 mg/I in May and 3.85 mg/I in September). As noted by SCC, <br />iron was not elevated at the two upgradient wells (SBAL68 and SCAL69) situated <br />between the mine disturbance area and the point of compliance well on Bond Creek <br />and Cow Camp Creek, respectively, indicating the elevated iron at SFAL72 is not <br />related to the Seneca II Mine. <br />7. Surface water flows were within historic ranges on Fish Creek and Little Grassy Creek. Grassy <br />Creek flows were within historic ranges, but considerably lower than predicted in the <br />Probable Hydrologic Consequences section of the permit application package (see related <br />Comment 9). <br />Page 2 of 5