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• • Drafr West Elk Mine 2005 Annual Hydrology Report 21 Table 4 Summary of the Ground Water Monitoring Program Monitored Station 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 3 x Year 3 x Year Low Flow Period (r) 1985 to resent P-4 MW-9 3 x Year 3 x Year Low Flow Period t~1 1985 [o resent P-6 3 x Year 3 x Year Low Flow Period t~1 1997 to resent P-7 3 x Year 3 x Year Low Flow Period t~1 1997 to resent E-1 3 x Year 3 x Year Low Flow Period (al 1996 to resent E-7 3 x Year 3 x Year Low Flow Period tal 1999 to resent er D Fork Alluvial (t) 3 x Year 3 x Year Low Flow Period cr7 10/03 to resent ower Dr Fork Alluvial I'I 3 x Year 3 x Yeaz Low Flow Period cal 10/03 to resent Permit Area Wells com leted in Barren Member above F Seam OM-80 3 x Year 3 x Year Low Flow Period (Z) 1979 to resent OM-] 3 3 x Year 3 x Year Low Flow Period t~1 1979 to resent SOM-45-H1 3 x Year 3 x Year Low Flow Period (z) 1979 to resent OM-45-H2 3 x Year 3 x Year Low Flow Period hl 1979 to resent 3-H-4 Baseline Baseline Baseline 2005 to resent Permit Area Wells com leted in F Se am OM-2-H 3 x Year 3 x Year Low Flow Period t~1 1981 to resent SOM-16-H 3 x Year 3 x Year Low Flow Period t~1 1981 to resent SOM C-76 3 x Year 3 x Year Low Flow Period tzl 1978 to resent 3-H-3 Baseline Baseline Baseline 2005 to resent Permit Area Wells com leted in E Se am 6-27-1 3 x Year 3 x Year Low Flow Period czl 1996 to resent 3-11-1 t0 3 x Year 3 x Year Low Flow Period (~) 10/03 to resent SOM-3E t'1 3 x Year 3 x Yeaz Low Flow Period (n) 10/03 to resent 3-H-2 Baseline Baseline Baseline 2005 to resent Permit Area Wells com [eted above E Seam 6-2-2 3 x Year 3 x Year Low Flow Period h] 1996 to resent Permit Area Wells com leted in B Seam OM-129-H 3 x Year 3 x Year Low Flow Period Iil 1993 to resent So. W-1 3 x Year 3 x Year Low Flow Period (a) 1996 to resent V-4b 3 x Year 3 x Year Low Flow Period t~1 1995 to resent 1-11-1 3 x Year 3 x Year Low Flow Period (n) 2001 to resent SOM-3B l0 3 x Year 3 x Year Low Flow Period (e) 10/03 to resent 3-H-4 Baseline Baseline Baseline 2005 (suspect data (1) New wells installed in September 2003, baseline sampling from October 2003 to October 2004. (2) For sites with more than 5 years of data, lab parameters include TSS, TDS, Cond., pH, and Fe (diss & tot). (3) For sites with less than 5 years data, lab parameters include TSS, TDS, Cond., pH, Ca, Mg Na, K, SAR, hardness, bicarb., CI, NitriteMitmte, PO., SO., Fe (tot &diss), Mn (tot &diss), Al, As (tot), Cd, Cu, Pb, Hg (tot), Mb, Se (rot), Bo, Zn • September 2006 HydroGeo, Inc.