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West Elk Mine
<br />-r.-
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<br />Table 4
<br />Summary of Monitoring Well Data
<br />
<br />Monitoring
<br />Well
<br />Location Ground
<br />Elevation
<br />toc, ft. Screened Interval
<br />Depth
<br />ft To[al
<br />Depth
<br />ft
<br />Formation of
<br />Completion
<br />Facili Area We/Is and Alluvial Wells
<br />P-3 MW-8 Tl3S, A90W, Sec. IQ, SW,SW 6145.5 25-30 33.8 Colluvium
<br />P-4 MW-9 T13S, R90W, Sec. 1Q, SW.SW 6147.5 25-30 33.0 Colluvium
<br />P•6 T13S. R90W, Sec. IQ, SW,SW 6204.8 78-83 83.0 Alluvium
<br />P-7 Tl3$ R90W, Sec. 15, SW,SW 6205.7 50-55 55 Alluvium
<br />E-1 T13S. R90W, Sec. 10. SW,SE 6187.0 n.a. 30.0 Colluvium
<br />E-7 TI3S, R90W, Sec. 10, S$SW 6116.3 n.a. 32.0 Colluvium
<br />er D Fork~'~ T14S. R90W, Sea 2, SW,NW -8100 24-29 29 Alluvium
<br />owes D Fork«I T13S, R90W, Sec. 34. SW,NW ^7640 17.5-225 22.5 Alluvium
<br />Permit Area Wells com feted In Barren Member above F Seam
<br />
<br />SOM-80
<br />T13S, A90W, Sec. 21, NW,NE
<br />6854.4
<br />50-90
<br />142.5 Barren Mbr.
<br />Mesa Verde Fm.
<br />
<br />SOM-13
<br />T135, R90W, Sec. 16, SW,NE
<br />6761.9
<br />124-188
<br />188.0 Barren Mbr.
<br />Mesa Verde Fm.
<br />
<br />OM-45-H1
<br />T13S, R90W, Sec. 29, NE,SW
<br />7703.5
<br />n.a.
<br />320.0 Barren Mbr.
<br />Mesa Verde Fm.
<br />
<br />SOM-45-H2
<br />TI3S, R90W, Sec. 29, NE,SW
<br />7703.8
<br />n.a.
<br />260.0 Barren Mbr.
<br />Mesa Verde Fm.
<br />Permit Area Wells com feted in F Seam
<br />OM-2-H TI3S, R90W, Sec. 29, SE,NW 7873.6 O en hole 5.5 ft. 716.8 F-Seam
<br />SOM-16-H TI3$ R90W, Sec. 28, SW,NW 8029.6 O en hole 1025-1034 ft. 1034.0 F-Seam
<br />Permit Area Wells com [eted in E Seam
<br />6-27-I T13S, R90W, Sec. 27, NW,NE 7871.5 1270-1290 1320.0 E-Seam
<br />3-l l-1 1'I T13S, R90W, Sec. 11, SE,SE -6281 240 - 250 253 E-Seam
<br />SOM-3ElU T13S. R90W, Sec. 34, SE,SE -SOSL 1015-1035 1035.0 E-Seam
<br />Permit Area Wells com feted above E Seam
<br />6-2-2 TI4S, R90W. Sec. 2, NE,NE 7999.0 1063-1083 1540.0 Above E-Seam
<br />Permit Area Wells com feted in B Seam
<br />OM-129-H T13S. R90W, Sec. l6, NE,NE 6269.1 334-362 365.0 B-Seam
<br />So. W-1 T13S, R90W, Sec. 29. NW,SW 8020.0 1320-1380 1380.0 B-Seam
<br />V-4b TI3S, R90W, Sec. 15, SE,SW 6687.0 600-625 630.0 B-Seam
<br />1-I1-1B T13S, R90W, Sec. 11, SE,NE 6281.3 489-499 509.0 B-Seam
<br />SOM-3B ~'~ T13S, R90W, Sec. 34, SE.SE -8051 1994.5-1315 1415.0 B-Seam
<br />Stud Area Wells com feted iu F Seam
<br />OM C-76 Tl3S, R90W, Sec. 33, NW,NE 7579.6 n.a. 457.0 F-Seam
<br />(I) New monitoring well installed in September 2003
<br />Groundwater Quality
<br />MCC has selected the water quality parameters listed in Table 6 for baseline laboratory analysis to
<br />chazacterize baseline and ongoing groundwater quaity. These include iron and manganese,
<br />because the detection of these elements (or changes in their observed concentrations) may represent
<br />conditions in which metals aze mobilized. Additionally, changes in conductivity and TDS can
<br />1.04 -61 Revised Nmember 2004 PR10
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