Laserfiche WebLink
localized geochemical conditions and not to mining impacts. <br />Spoil Springs #1 and 2. Both these spoils springs are located above the NPDES 004 pond. <br />Spoils Spring #1 is a large spring that floes directly into the pond, and Spoils Spring #2 <br />is a small spring creek in reclaimed land Chat floes adjacent to Spoils Spring #1. In <br />May, 1990, Spoils Spring #2 had an EC 25°C (electrical conductivity corrected to 25°C) of <br />4,000 umho/cm, a pH of 8.04, and a floe of 17.5 gpm. <br />Dater quality and hydrograph data for Spoils Spring #1 may be found in Appendix E. Review <br />of this hydrograph indicates higher flpus the past three years. This is primarily due to <br />the enlargement of the spring with a bac khoe for the installation of a weir plate by PCC <br />and USGS personnel beginning September 9, 1987. Floe increases may also be attributed to <br />an increase in the spoils recharg e'area as mining of the wadge coal seam proceeds to the <br />north. This spring displays a CaMg-S04 type eater. TDS values (see Table 21, Appendix A) <br />have been increasing since this began flout ng. This is due primarily To an ever <br />increasing recharge area of spoils material as mining progresses. The extended drought <br />conditions may have also caused an increase in TDS values. <br />• Spoils Springs #3, 4, 5, 7 and 8. These springs all exist in the wadge seam mining area <br />in the Little Grassy Creek basin. Spoils Springs #3, 4 and 5 were sampled April 10, 1990. <br />Spoils Spring #3 drains out of an old mine pit, and exhibited a floe of 73.6 gpm, an EC <br />28°C of 4,010 umhe/cm, and a pH of 7.12. Spoils Spring #4 is a spring adjacent to Spoils <br />Spring #3, and exhibited a flow of 45.8 gpm with an EC 25°C of 3,690 umh o/tm and a pH of <br />7.82. Spoils Spring #5 issues ou[ of another old mine pit north of Spoils Spring #3. It <br />had a flow of 110 gpm, an EC 25°C of 3,240 umhos/cm, and a pH of 7.68. All these springs <br />eventually flow into the Nadge Impoundment via Little Grassy Creek. <br />Spoils Spring #7 was noted in 1986 in the secondary drainage flowing into She wedge <br />Impoundment (the primary drainage being Little Cressy Creek). It was not flowing when the <br />site was visited in September, 1987, 1988, and 1989, or in April, 1990. <br />Spoils Spring #8, which is across the road tram Spring #2 along the north permit boundary, <br />was located in 1987. It is situated in a road ditch that was dry 10 yards upstream of the <br />spring end apparently issues from prelau area spoils to the south. on April 11, 1990, no <br />floe was noted at the map location, but approximately 600 feet downstream in the same <br />ditch that Spoils Spring #8 discharges, a floe of 2.2 gpm was noted with a EC 25°C of <br />2,650 umho/cm, and a pH of 7.74. <br />19 <br />