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TR-54 Revised 3/2512 <br />TABLE 15-3 <br />(Continued) <br />Well USGS Formation Well Depth Casing Surface Historic <br />Number Number Coordinates Completed In (ft) Dia. (in) Elev. (ft) Remarks Water Quality Data <br />______________________________________________________________________________________________________________________________________________ <br />YOV29 N/A S 36,561.00 Wadge Overburden 221.0 4 7705.67 Discontinued, Abandon 2025 No <br />W 5,654.38 <br />YW29 N/A S 36,545.45 Wadge Coal 259.0 4 7705.53 Discontinued, Abandon 2025 Yes <br />W 5,646.88 <br />YWU29 N/A S 36,520.99 Wadge 303.9 4 7705.87 Discontinued, Abandon 2025 Yes <br />W 5,635.87 Underburden <br />YOV30 N/A S 39,202.68 Wadge Overburden 141.0 4 7585.45 Discontinued, Abandon 2025 Yes <br />W 7,083.35 <br />YW30 N/A S 39,175.95 Wadge Coal 208.0 4 7586.49 Discontinued, Abandon 2025 Yes <br />W 7,075.14 <br />YWU30 N/A S 39,189.87 Wadge 261.0 4 7586.62 Discontinued, Abandon 2025 Yes <br />W 7,078.95 Underburden <br />YWC31 N/A S 41,334.97 Wolf Creek 108.0 4 7809.03 Abandoned 10/01 Yes <br />W 4,798.52 Coal <br />YWCU31 N/A S 41,325.10 Wolf Creek 180.0 4 7808.61 Abandoned 10/01 No <br />W 4,801.04 Underburden <br />YTM32 N/A S 26,947.95 Twentymile 1000.0 5 6856.13 Shop Well, currently not in service No <br />W 2,107.89 Sandstone <br />YWC33 N/A S 39,868.44 Wolf Creek 309.38 3 7588.39 Replaces YWC31, drilled 8/02 No <br />W 7,128.03 Coal <br />YWCU33 N/A S 39,883.37 Wolf Creek 391.61 3 7587.79 Replaces YWCU31, drilled 8/02 No <br />W 7,122.79 Underburden <br />SGAL70 N/A S 12,889.99 Grassy Creek 22.0 4 6537.04 Discontinue 2025, POC well Yes W 4,358.42 Alluvium (also downstream of Seneca II Mine)