2011-04-18_REPORT - C1996083 (4)

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Bowie surces, LLC We 1 Bowie No. 2 Mine 2010 Annual Hydrology Report 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 Surface Water Monitoring Stations -STREAMS AND DITCHES (cont.) Steph-up Steven's Draw-Drainage System 7920 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-01 Terror Creek-Downstream 7140 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-02 Terror Creek-Mid Stream 7040 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-04 Terror Creek-Upstream 7880 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-05 Stevens Gulch-Downstream 6600 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-10 Terror Ditch 6480 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 SW-11 Stevens Gulch-Upstream 8084 N/A Quarterly Semi-Annually Annually Yes No No winter monitoring - 2nd & 4th Qrt, List 1 Coal Member of Mesaverde DH-15 Steven's Draw-Drill Hole 7143 218 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH-25 C Gulch-Drill Hole 7144 325 Quarterly N/A Annually Yes No No winter monitoring-Casing blcked-Wtr Level Only DH-38 D Gulch-Drill Hole 7245 454 Quarterly N/A Annually Yes No No winter monitoring-Casing blcked-Wtr Level Only 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-65 Dove Gulch-Monitoring Well 7845 1021 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts 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 325 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(B) Terror Creek - Monitoring Well-Upper 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 CWI-DH-58 Upper B Seam & Above (B1) 8520 1914 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts CWI-DH-60 Upper B Seam (61) 7960 1073 Quarterly Semi-Annually Annually Yes No No winter monitoring-Lab analysis 2nd & 4th Qrts DH2010-1 Upper B Seam & Above Upper B N/A N/A Quarterly Semi-Annually Annually Yes No Early 2011 Completion North Fork Alluvium Monitoring Wells AW-1 Alluvial Well 5978 120 Quarterly Semi-Annually Annually Yes No Lab anlaysis 2nd & 4th 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 all of 1999 - Lab 2nd & 4th Qrts AW-8 Alluvial Well 5950 60 Quarterl Semi-Annually Annually Yes No Installed Fail of 1999 - Lab 2nd & 4th Qrts T1-4