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2015 Annual Hydrology Report <br />3.4 Surface Water Monitoring Results <br />Mine Area <br />Energy Fuels Coal, Inc. - Southfield Mine <br />The surface water monitoring program included, prior to approval of TR -43, the following <br />monitoring stations, shown on Map 12, Mine Area Surface and Groundwater Hydrology: <br />STATION LOCATION <br />NC -2 E'/zSE'/a, Sec 26 <br />NC -1 W'/2NE'/4, Sec 19 <br />MC -1 E'/zNW'/4, Sec 30 <br />MC -2 W'/2NE'/4, Sec 30 <br />SA -1 E'/zNW'/4, Sec 24 <br />DESCRIPTION <br />Newlin Creek (Upper) <br />Newlin Creek (Lower) <br />Magpie Creek (Upper) <br />Magpie Creek (Lower) <br />Second Alkali Creek, near MW -65 <br />The mine and adjacent areas fall within the lower portions of the Magpie and Newlin Creek <br />drainages and encompass the central portion of the Second Alkali Creek drainage, all of which are <br />tributary to the Arkansas River. Newlin Creek is a perennial drainage above the mine permit area <br />and to its diversion point for the City of Florence Municipal Water Supply. Within the mine permit <br />boundary, flows in Newlin, Magpie, and Second Alkali Creeks are all ephemeral (refer to Section <br />2.04.7 of the approved permit application for more details). EFCI monitored any significant stream <br />flows in Newlin, Magpie, and Second Alkali Creeks at the locations shown above. <br />In accordance with the approved NPDES discharge permits, EFCI monitored any storm water <br />runoff discharge from the two remaining sedimentation structures, Ponds 4 and 5. These outfalls are <br />located as follows: <br />STATION LOCATION DESCRIPTION <br />NPDES 002 E'/zNW'/4, Sec 30 Pond 4 (outfall to Newlin Creek) <br />NPDES 004 W'/zSE'/4, Sec 19 Pond 5 (outfall to Magpie Creek) <br />Sedimentation Ponds 4 and 5 collect and allow sediment to settle from storm runoff on the <br />reclaimed mine site. In recent years there has been less storm runoff reaching and pooling in the <br />ponds primarily due to increasing vegetative cover. Consequently, no pond discharges have <br />occurred due to storm events in recent years, and none occurred during the reporting period. <br />EFCI inspected pond conditions throughout 2015 following significant storm events. Both ponds <br />were dry prior to rain storms beginning in late April. Storms then occurred frequently through early <br />June. The resulting storm runoff produced moderate sized pools in both ponds that remained <br />continuously through early September, although no discharges occurred as mentioned above. Water <br />held in the ponds was nonexistent by October, and they remained dry through the end of the year. <br />Page 7 <br />