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• Red Canyon Mine - 1996 AHR Page 3 345 and 270 respectively. In September the TSS for SP-D and SP-DA was 125 and 130 respectively. The TSS measurements indicate thffi no significant degradffiion of the quality of water occurred on this stretch of the Carbon Ditch. The sediment pond did not discharge during the year. During the year the return irrigation flow was allowed to accumulate in the pond to demonstrate there was an adequate source of water for the pond. On July 21 a the pond wntained about four feet of water. The return irrigation flow was then diverted to the major drainage channel. By the end of September the pond was dry. The sediment pond is to be left in place to enhance the postminig land use of wildlife habitat (ref. page 129). A "spring" is located in the northeast comer of the pond which feeds a small (20' X 20') pool. In March the pool had a pH of 8.4 and a conductivity of 1230 umhos/cm. In November the pool had a pH of 7.4 and a conductivity of 1390 umhos/cm. GROUND WATER Table G-95 shows the ground water monitoring results for this water year compared to the averages of previous monitoring results for the same months. The alluvial piezometers (P-1 8c . P-2) showed water levels consistent with prior years averages. The Division's letter dated March 3, 1994 requested that the wells completed in the E-Seam be monitored to determine ffi what level the workings have been flooded. The 1987 Annual hydrologic report predicted the water in the mine workings would reach the water level in E-1, 6355, in 1993. The water level in E-1 in September 1994 was 6367.3. The water level in E-1 during May and September 1995 was 6366.9 and 6366.8 respectively. In September 1996 the water level in E-1 was 6373.3. It is unlikely this monitoring well reflects the water level in the mine. According to the Hydrology and Alluvial Valley Floor Report, prepared by Kaman Tempo, well E-1 was developed to determine the water level and aquifer characteristics of the E Seam. The elevation of the surface where the mine portals were developed is approximately 6400. Minrec proposes to continue monitoring the depth to water ffi well E-1 ffi least one more year to confirm the water level in the well is relatively stable. The PHC predicts that a spoil aquifer with a peak discharge of 30 gpm will develop in the underground waste disposal area and backfilled areas of the reclaimed topography. There have never been any springs or seeps observed ffi the waste disposal area or reclaimed mine site. There is no indication a spoil aquifer has developed in the reclaimed waste disposal area or reclaimed mine site. •