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Fall 2007 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />5.7.2 Location 10 (Location 14 of the Spring 2007 Field Visit) <br />Location 10 is a stock pond, which is nearly filled with sediment and vegetation (Figure 29) with <br />spring and seep intlows froth the south and southeast sides of the pond. The estimated tlow <br />observed during the September ?7, ?007 tield visit is I to 2 gpm, about I'10`h the flow observed <br />during spring ?007. "phis pond is nearly completely tilled with scdirnent and vegetation, <br />providing very limited storage capacity (Figure ?9). Each of the seeps and springs above and <br />southeast of the pond was noted to emanate from beneath an exposed outcrop of silty sandstone. <br />This pond is located above the northwestern part of currently unmincd, but planned, longwall <br />panel C~ with approximately 47S feet of overburden to the E-seam. <br /> <br /> <br />831-032.780 Wright Water Engineers, Inc. Page 44 <br />November 2007 <br />Figure 29. Stock pond, nearly full of sediment and vegetation at location 10 (location 14 of the spring 2007 field <br />visit). The estimated flow from springs south and southeast from the pond on the September 27, 2007 visit is about 1 <br />to 2 gpm, or 1/10"` the flow of 10 to 20 gpm observed during the April 20, 2007 visit. The decreased Flows represent <br />seasonal variability in that mining has not vet occurred in this area. <br />