2011-02-25_REPORT - C2009087 (2)

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Table 3 (Cont.) Summ s of Ground Water Monitoring Wells, Peabody Sage Creek Mine, Routt County, Colorado Well No. (Computer ID.) Coordinates South East Formation Completed In Well Depth (ft) Casing Diameter (in) Ground Surface Elevation (ft) Analytical Parameter Remarks List* NS - Not Sampled GW-S19-W (SW19) 24333.54 9957.80 Wadge Coal 264.0 4 6796.73 Short GW-S20-LWI 12365.73 8346.39 Lennox-Wadge 140.0 4 6823.44 Monitors fly ash NS (SOV20) Interburden destroyed 2/83 GW-S21-LWI 14235.25 8013.42 Lennox-Wadge 98.0 5 6645.59 Monitors fly ash pit, NS (SOV21) Interburden monitoring discontinued 1997 GW-S22-S (SSP22) 19793.08 10743.60 Spoil 48.0 2 6877.87 Not enough water to sample NS GW-S23-S (SSP23) 18328.23 10410.10 Spoil 24.5 2 6824.66 Not enough water to sample NS GW-S24-S (SSP24) 18663.86 10267.44 Spoil 63.5 2 6829.33 Not enough water to sample NS GW-S25-S (SSP25) 17367.62 9461.82 Spoil 50.5 4 6670.47 Long GW-S26-S (SSP26) 17418.02 9416.51 Spoil 43.5 4 6654.81 Long GW-S27-S (SSP27) 17410.46 9351.98 Spoil 38.5 4 6637 96 . Long GW-S28-W (SW28) 28870.50 15547.72 Wadge Coal 61.7 2 7336.57 Removed by mining 12/80 NS GW-S29-W (SW29) 27991.21 16811.67 Wadge Coal 50.0 2 7452.86 Removed by mining 5/81 GW-S30-W (SW30) 27506.26 17950.77 Wadge Coal 39.0 2 7465.42 Removed by mining NS winter 85/86 GW-S31-A1(SLGAL31) 16308.02 7817.49 Little Grassy Creek 61.4 2 6598.67 Screen collapsed (3/82) NS Alluvium See GW-S31-A2 GW-S31-A2 16308.02 7817.49 Little Grassy Creek 23.0 4 6598.67 Long (SLGAL3IA) Alluvium GW-S32-A (SLGAL32) 22966.17 10054.98 Little Grassy Creek 55.2 2 6756.09 Short Alluvium GW-S33-A (SGAL33) 15831.08 7046.04 Grassy Creek 40.0 4 6586.36 Long Alluvium GW-S34-A (SGAL34) 15854.39 6987.23 Grassy Creek 40 0 2 6586 14 . . NS Alluvium GW-S35-WC(SWC35) 24249.88 17745.53 Wolf Creek Coal 154.0 5 7718.62 Abandoned 3/96 NS 0 0 0 a