2009-04-13_REPORT - C1996083 (3)

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Bowie Arces, LLC Bowie No. 2 Mine 2008 Annual Hydrology Report 0 Summary of Hydrology Monitoring Stations (Continued) Station Elevation Depth Frequency of Measurements Report Report Format Number Station Name (ft.) (ft.) Field Par. Lab. Par. Frequency AHR DMR Comments Coal Member of Mesaverde DD-NM4x98-27 In-Mine Monitoring Well-North Mains 290 WA N/A N/A No No Abandoned 2nd Qrt 2004 DD-NM4x98-28 In-Mine Monitoring Well-North Mains 310 WA N/A N/A No No Abandoned 2nd Qrt 2004 DD-NM4x98-29 In-Mine Monitoring Well-North Mains 475 N/A N/A WA No No Abandoned 2nd Qrt 2004 DH-15 Steven's Draw-Drill Hole 7143 218 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-16 D Gulch-Drill Hole 7134 397 WA. N/A WA No No Casing blocked at 60' in 2000 DH-25 C Gulch-Drill Hole 7144 325 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-34c Freeman Gulch-Drill Hole 7588 125 WA N/A N/A No No Casing shifted-no access for monitoring DH-38 D Gulch-Drill Hole 7245 454 Quarterly Semi-Annually Annually Yes No No winter monitoring-Casing blocked DH-39 Steven's Draw-Drill Hole 7143 181 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-49 B Gulch-Drill Hole 7203 324 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-57 Freeman Gulch-Drill Hole 7485 1000 WA N/A WA No No Destroyed by mining in 2001 DH-57a Freeman Gulch-Drill Hole 7485 1239.7 WA N/A WA No No Destroyed by mining in 2001 DH-58 Freeman Gulch-Drill Hole 7883 1600 WA N/A N/A No No Abandoned 2004 DH-58a Freeman Gulch-Drill Hole 7882 1840 WA N/A WA No No Abandoned 2004 DH-65 Dove Gulch-Monitoring Well 7845 1020.6 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-66 Hubbard Creek-Monitoring Well 7712 1480 WA N/A WA No No Abandoned 2004 DH-67B Hubbard Creek-Monitoring Well 6451 594 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-67D Hubbard Creek-Monitoring Well 6450 324.8 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-67abv Hubbard Creek-Monitoring Well 6451 193 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-67blw Hubbard Creek-Monitoring Well 6451 360 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts TC-03-01 East (R) Terror Creek - Monitoring Well 7118 871 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts TC-03-01 Upper (B) Terror Creek - Monitoring Well 7118 713 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts TC-03-02 Terror Creek - Monitoring Well 7095 586 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts TC-03-03 Terror Creek - Monitoring Well 6996 505 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts North Fork Alluvium Monitoring Wells AW-1 Alluvial Well 5978 120 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 41h Qrts AW-2 Alluvial Well 5967 50.4 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th Qrts AW-3 Alluvial Well 5963 150 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th Qrts AW-4 Alluvial Well 5978 60 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th Qrts AW-5 Alluvial Well 5982 100 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th Qrts AW-6 Alluvial Well 5981 112 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th Qrts AW-7 Alluvial Well 5950 188 Quarterly Semi-Annually Annually Yes No Installed Fall of 1999 - Lab 2nd & 4th Qrts AW-8 Alluvial Well 5950 60 Quarterly Semi-Annually Annually Yes No Installed Fall of 1999 - Lab 2nd & 4th Qrts AW-9 Alluvial Well 5946 80 Quarterly Semi-Annually Annually Yes No Installed Fall of 1999 - Lab 2nd & 4th Qrts AW-11 Alluvial Well 5884 60.86 Quarterly Semi-Annually Annually Yes No Installed Fall of 2000 - Lab 2nd & 4th Qrts AW-12 Alluvial Well 5878 45.38 Quarterly Semi-Annually Annually Yes No Installed Fall of 2000 - Lab 2nd & 4th Qrts AW-14 Alluvial Well 5822 30 Quarterly Semi-Annually Annually Yes No Installed Summer of 2003 - Lab 2nd & 4th Qrts AW-15 Alluvial Well 5973 86 Quarterly Semi-Annually Annually Yes No Installed Winter of 2003 - Lab 2nd & 4th Qrts AW-16 Alluvial Well 5965 75 Quarterly Semi-Annually Annually Yes No Installed Winter of 2003 - Lab 2nd & 4th Qrts AW-17 Alluvial Well 5951 62 Quarterly Semi-Annually Annually Yes No Installed Winter of 2003 - Lab 2nd & 4th Qrts able 1 T1-4