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• ~ • Table 3 (Cont.) Summary of Ground Water Monitoring Wells, Seneca (I Mine, Routt Lounty, Colorado Coordinates Ground Analytical Well No. Formation Nell Casing Surface P arameter (Computer No.) South East Completed In Oepth Diameter Elevation Remarks List ~ __, ( f t ) ( i nZ____ __ ( f t j___~ ____,___` _N S__N of SamQl ed GU-519-U (UM0021) 24333.54 9957.80 Uadge Coal 264.0 4 6796.73 Short GU-520-L WI 12365.73 8346.39 Lennox-Wadge Inte rburd 140.0 4 6823.44 Monitors fly ash (WM0022) destroyed (2/83) NS GW-521-LWI 14235.25 8013.42 Lennox-Wadge Interburd 98.0 5 6645.59 Monitors fly ash pit Short <WM0023) GW-522-5 (UM0024) 19793.08 10743.60 Spoil 48.0 2 6877.87 Not enough water to sample NS GW-523-5 (UM0025) 18328.23 10410.10 Spoil 24.5 2 6824.66 Nat enough water to sample NS ? GU-524-5 (UM0026) 18663.86 10267.44 Spoil 63.5 2 6829.33 Not enough water to sample NS ~ GU-525-5 (UM0027) 17367.62 9461.82 Spoil 50.5 4 6670.47 Long GU-526-5 (WM0028) 17418.02 9416.51 Spoil 43.5 4 6654.81 Long GU-527-5 (WM0029) 17410.46 9351.98 Spoil 38.5 4 6637.96 Long GU-528-W (UM0030) 26870.50 15547.72 Wadge Coal 61.7 2 7336.57 Removed by mining NS GU-529-W (UM0031) 27991.21 16811.67 Nadge Coai 50.0 2 7452.86 Removed by mining (5/81) NS GU-530-W (UM0032) 27506.26 17950.77 Wadge Coal 39.0 2 7465.42 Removed by mining NS winter 85/66 GU-531•A 1<UM0033) 16308.02 7817.49 Little Grassy Creek 61.4 2 6598.67 Screen collapsed (3/82) NS Alluvium See GW-531A2 GU-532-A (WM0034) 22966.17 70054.98 little Grassy Creek 55.2 Z 6756.09 Short Alluvium GU-533•A (WM0035) 15837.08 7046.04 Grassy Creek 40.0 4 6586.36 Long Alluvium GW-534-A (UM0036) 15854.39 6987.23 Grassy Creek 40.0 2 6586.14 N5 Alluvium GU-535-WC(WM0037> 24249.88 17745.53 Wolf Creek Coal 154.0 S 7718.62 Upgradient of min ing NS GW-536-WC(WM0038) 23268.41 15422.27 Uolf Creek Coal 138.0 2 7549.58 Removed by mining NS Fall 86