2008-06-27_REPORT - C1980007 (4)

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West Elk Mine 2007 Annual Hydrology Report 28 • r? 40 Table 6 Summary of the Ground Water Monitoring Program Monitored Station Monitored Area Water Level Measurement Field WQ (pH, cond, temp) Annual Lab Water Quality Period of Record Facili Area Wells and Alluvial Wells P-3 MW-8 Mine facility area 3 x Year 3 x Year Low Flow Period") 1985 to resent P-4 (MW-9) Mine facility area 3 x Year 3 x Year Low Flow Period 1985 to resent P-6 Mine facility area 3 x Year 3 x Year Low Flow Period ' 1997 to resent P-7 Mine facility area 3 x Year 3 x Year Low Flow Period(') 1997 to resent E-1 Mine facility area 3 x Year 3 x Year Low Flow Period 1996 to resent E-7 Mine facility area 3 x Year 3 x Year Low Flow Period ' 1999 to resent Upper D Fork Alluvial ' SOD area 3 x Year 3 x Year Low Flow Period (2) 10/03 to resent Lower D Fork Alluvial " SOD area 3 x Year 3 x Year Low Flow Period (2) 10/03 to resent Wells comp leted in the Barren Member above F Seam SOM-80 NE mine panels 3 x Year 3 x Year Low Flow Period ' 1979 to resent OM-13 Down gradient of NE mine panels 3 x Year 3 x Year Low Flow Period 1979 to 2006 OM-45-H1 SE mine panels 1979 to 2005 SOM-45-1-12 SE mine panels 3 x Year 3 x Year Low Flow Period ' 1979 to resent SOM-23-H-4 SOD area 3 x Year 3 x Year Low Flow Period ez 2005 to 2006 Wells completed in the F Seam OM-2-H SE mine panels 1981 to 2005 OM-16-H i SE mine panels 1981 to 2005 SOM-C-76 SOD area 3 x Year 3 x Year Low Flow Period ") 1978 to resent SOM-23-H-3 SOD area 3 x Year 3 x Year Low Flow Period (2 2005 to resent Wells completed in the E Seam 6-27-1 Box Can ?on mine panels 1996 to 2005 3-11-1 Down gradient of W. Flatiron and Box Canyon panels 3 x Year 3 x Year Low Flow Period (Z) 10/03 to resent OM-3E Up gradient of Box Canyon mine panels and SOD area 3 x Year 3 x Year Low Flow Period (2) 10/03 to resent SOM-23-H-2 SOD area 3 x Year 3 x Year Low Flow Period cz) 2005 to resent Wells completed above the E Seam 6-2-2 East and up gradient of SOD area 3 x Year 3 x Year Low Flow Period ' 1996 to resent Wells completed in B Seam SOM-129-H Down gradient of NE mine panels 3 x Year 3 x Year Low Flow Period ' 1993 to resent o. W-1 Up gradient of SE mine panels and SOD area 1996 to 2005 V-4b Box Canyon mine panels 3 x Year 3 x Year Low Flow Period 1995 to resent 1-11-1 Down gradient of W. Flatiron area 3 x Year 3 x Year Low Flow Period 2001 to resent SOM-3B Up gradient of Box Canyon mine panels and SOD area 3 x Year 3 x Year Low Flow Period (Z 10/03 to resent OM-23-H-1 1! SOD area 2005 sus ect data ') For sites with >5 years of data, lab parameters include TSS, TDS, Cond., pH, and Fe (diss & tot). 2 For sites with 5 years or less data, see Table 2 Shaded items - Wells removed from monitoring program because casing has collapsed June 2008 HydroGeo, Inc.