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this spring was abandoned for monitoring but it still flows. Spoil Spring 1 <br />discharges into Tuttle Draw a short distance downstream. <br />Spoil Spring 92 is located approximately 50 yards downhill of Spoil Spring 91. <br />This spring has been monitored since 1986 by Peabody and was shortly <br />thereafter abandoned since it did not flow. It was basically a seep area with <br />cattails below Spoil Spring #1. When Phase 3 bond release on the majority of the <br />New Horizon #1 Mine area was done in 2001, this spring was abandoned for <br />monitoring and does not still flow. <br />Spoil Spring #3 is located on the Rice Tract, which is the sole remaining portion <br />of the New Horizon #1 Mine that has not yet attained Phase 3 bond release. This <br />location was adjusted slightly on Map 2.04.7 -1A for better accuracy. This spring <br />no longer flows and was abandoned in 2001, when Phase 2 was granted for the <br />Rice tract. <br />Spoil Spring 94 is located in the northwest corner of the New Horizon 92 Mine <br />and is the predicted location of the spoil spring for this mine area once the spoil <br />becomes saturated. As of August of 2010, mining has not even reached this point <br />yet and the spoil behind it is not yet saturated. <br />NPDES discharge point #1 was downstream of Spoil Spring #1 and basically <br />collected all the spoil water that was leaving the overburden in the New Horizon <br />#1 Mine area. This site was also abandoned when Phase 3 bond release on the <br />majority of the New Horizon #1 Mine area was completed in 2001. <br />The predicted Spoil Spring 4 from the New Horizon 42 Mine will discharge into <br />the minor tributary to Tuttle Draw, located immediately south of the western <br />edge of the mine area. This tributary enters Tuttle Draw less than 1 mile <br />downstream. Tuttle Draw enters the San Miguel River approximately 2 miles to <br />the southwest. <br />Sample site SW -N108 is located in Calamity Draw immediately upstream of any <br />influence from the mine. Sample site SW -N1 is located in Tuttle Draw <br />immediately upstream of any influence from the mine. Sample data over the past <br />12 years from these sites has shown that the TDS of the waters drops <br />significantly when irrigation is active in the area. Therefore, the impacts to the <br />receiving waters will be studied for both cases, with and without irrigation. The <br />irrigation case corresponds to the September /October time period when flows are <br />fairly low in the San Miguel River. The non - irrigation period corresponds to <br />March/April when flows in the San Miguel are usually at peak. This is shown on <br />Table 2.05.6(3) -4 in the permit application package. <br />The values for the NPDES 001 Discharge and SW -N3 are averaged from <br />measurements made from 1993 to present. Table 2.05.6(3) -3 in the permit <br />document shows this information for these as well as other sample points. <br />42 <br />