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MCC West Elk Mine Sunset Trail Lease Modifications 2011 Hydrology Survey 14 <br />Table 4. Summary of Horse Creek Drainage Survey Site Data <br />Note: n.m. - not measured; shaded cells indicate significant spring and pond sites (flows > 2gpm and/or >0.3 acres in size); elevations determined using GIS; site 60 had 2 ponds - first value <br />is for northern pond; second value is for western pond <br />February 2012 HydroGeo, Inc. <br />Spring <br />Spring <br />Electrical <br />Field / <br />Field / <br />Pond <br />Pond <br />Site <br />Elev(q <br />Temp <br />pH <br />Conductivity <br />Average <br />Water <br />Wetland <br />Wetland <br />Length <br />Width <br />Site ID <br />Date <br />Feature Type <br />(feet) <br />(°C) <br />(SU) <br />(µmhos/cm <br />Flow <br />Depth# <br />Length <br />Width <br />(estim.) <br />(estim.) <br />( m ) <br />(ft) <br />A rox <br />or µS/cm) <br />(estim.) <br />(estim.) <br />(ft) <br />(ft) <br />Area (ft) <br />ft <br />ft <br />SPRING RELATED <br />FEATURES <br />18 <br />ST -23-18 <br />10/13/11 <br />Spring with Wetland <br />8,985 <br />10.7 <br />n.m. <br />574 <br />0.1 <br />20 <br />ST -23-20 <br />10/13/11 <br />Spring feeding Pond <br />8,975 <br />14.6 <br />n.m. <br />615 <br />0.3 <br />0.2- <br />21 <br />ST -23-21 <br />10/13/11 <br />Sr)rinp, with Wetland <br />9,693 <br />6.9 <br />7.07 <br />95.4 <br />1.1 <br />0.3 <br />10 <br />22 <br />ST -23-22 <br />10/13/11 <br />Seep <br />8,978 <br />n.m. <br />n.m. <br />n.m. <br />-- <br />23 <br />ST -23.23 <br />10/13/11 <br />Spring <br />9,486 <br />4.7 <br />7.29 <br />108.7 <br />4.6 <br />0.17 <br />>30 feet <br />0.08- <br />25 <br />ST -23-25 <br />10/13/11 <br />Spring/Pond/Wetland <br />9,279 <br />5.5 <br />7.29 <br />190.9 <br />0.6 <br />.17 <br />62 <br />ST -22-62 <br />10/20/11 <br />Spring <br />8,742 <br />6.1 <br />7.02 <br />233 <br />0.4 <br />69 <br />ST -23-69 <br />10/21/11 <br />Spring <br />9,032 <br />5.2 <br />7.67 <br />154.8 <br />1-2 <br />70 <br />ST -23-70 <br />10/21/11 <br />Seep <br />8,881 <br />-- <br />-- <br />-- <br />-- <br />PONDS <br />24 <br />ST -23-24 <br />10/13/11 <br />Pond <br />8,936 <br />17.5 <br />n.m. <br />274 <br />- <br />11.7 <br />6.79 <br />279 <br />60 <br />ST -22-60 <br />10/20/11 <br />Pond/ Wetland <br />8,825 <br />9.9 <br />6.36 <br />434 <br />no flow <br />1-2 <br />61 <br />ST -23-61 <br />10/20/11 <br />Pond/Wetland <br />9,456 <br />10.6 <br />6.37 <br />66.9 <br />(outflow) <br />Note: n.m. - not measured; shaded cells indicate significant spring and pond sites (flows > 2gpm and/or >0.3 acres in size); elevations determined using GIS; site 60 had 2 ponds - first value <br />is for northern pond; second value is for western pond <br />February 2012 HydroGeo, Inc. <br />