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West Elk Mine 2006 Annual Hydrology Report 10 <br /> <br />• <br />Table 3. Summary of Surface Water Monitoring <br /> <br />Monitoring Station ~'~ <br />Monitored Area <br />Flow Measurement Field WQ <br />(pH, EC, T) Annual Lab Water <br />Quality period of Record <br />Sur ace Stations U er N. Fork Draina a Basin <br />U er Dee Creek U - radient of SE mine anels Instantaneous, 3 x Year c<) 3 x Year Peak Flow Period ~~~ 1996 to resent <br />Lower Dee Creek Down-gradient of SE mine anels Instantaneous, 3 x Year c4) 3 x Year Peak Flow Period ~~~ 1996 to resent <br /> Down-gradient of Box Canyon <br />~~~ <br />ox Can on anels Instantaneous, 3 x Year 3 x Year Peak Flow Period 1999 to resent <br /> p-gradient of mine facilities and Low Flow Period, Peak <br />' <br />orth Fork U er USGS) fine discharge. ontinuous 3 x Year ~ <br />Irri ation Season ~ 1977 to resent <br /> p-gradient of mine surface <br /> acilities area and NE mine <br />~'~ <br />er Sylvester Gulch anels Instantaneous, 3 x Year 3 x Year Peak Flow Period 1977 to resent <br /> Down-gradient of mine water <br /> ischazge point and NE mine <br />fiddle Sylvester Gulch anels ontinuous 3 x Year Peak Flow Period t~~ 1977 to resent <br /> Down-gradient of mine surface <br /> facilities area and NE mine <br />~~~ <br />Lower Sylvester Gulch anels Instantaneous, 3 x Year 3 x Year Peak Flow Period 1977 to resent <br />U er Raven Gulch East of W. Flatiron Area Instantaneous, 3 x Year 3 x Year Peak Flow Period (2~ 005 to resent <br />Lower Raven Gulch East of W. Flatiron Area Instantaneous, 3 x Year 3 x Year Peak Flow Period cz) 005 to resent <br />Sur ace Stations Lower N. Fork Draina a Basin <br /> Down-gradient of mine facilities Low Flow Period, Peak <br />orth Fork Lower nd mine dischar e. Instantaneous, 3 x Year 3 x Year Irrigation Season ~'~ 1935- resent <br /> ithin completed NW mine <br />~'~ <br />Lower Gribble Gulch anel area Instantaneous, 3 x Year 3 x Year Peak Flow Period 1977 to resent <br />Sur ace Stations Minnesota Creek Draina a Basin <br /> Up-gradient of un-mined SE coal <br />Lick Creek Flume ease area ontinuous 3 x Year Peak Flow Period ~~~ 1977 to resent <br /> p-Gradient of Dry Fork and <br /> est of un-mined SE coal lease <br />U er Minnesota Creek USFS) rea ontinuous 3 x Year Peak Flow Period ~~~ 1977 to resent <br />Dee Creek Ditch (baseline) c4) South of the Divide Area ontinuous 6 x Year 6 x year cz~ 006 <br />Dee Creek Ditch normal) (4) South of the Divide Area ontinuous 3 x Year Peak Flow Period cz) 007 to future <br /> 1977 to present <br /> ontinuous and elocated in 2005 <br />er Dry Fork Flume (baseline) South of the Divide Area Instantaneous 6 x Year 6 x Year (z) aseline in 2006 <br /> 1977 to present <br />U er Fork Flume (normal ontinuous 3 x Year Peak Flow Period cz) 007 -future <br />fiddle D Fork Flume South of the Divide Area ontinuous 3 x Year Peak Flow Period ~'~ 1977 to resent <br />East Gulch, East of Horse Gulch South of the Divide Area Instantaneous, 3 x Year 3 x Year Peak Flow Period ~~~ 1977 to resent <br />Deer Creek aseline South of the Divide Area Instantaneous, 6 x Year 6 x Year 6 x Year (Z) 005 <br />Deer Creek normal Instantaneous, 3 x Year 3 x Year Peak Flow Period cz> 006 to future <br />oison Gulch aseline) South of the Divide Area Instantaneous, 6 x Year 6 x Year 6 x Year c2) 005 <br />Poison Gulch normal Instantaneous, 3 x Year 3 x Year Peak Flow Period ~Z~ 006 to future <br />innesota Reservoir Flume <br />(baseline)~4~ <br />South of the Divide Area <br />ontinuous <br />3 x Year <br />Peak Flow Period (Z> <br />006 to future <br />innesota Reservoir Flume <br />(normal c4> <br />South of the Divide Area <br />ontinuous <br />3 x Year <br />6 x Year c~~ <br />007 to future <br /> Down-gradient of SE mine <br /> anels and un-mined SE coal <br />Lower Dr Fork Flume ease area ontinuous 3 x Year Peak Flow Period ~~~ 1977 to resent <br /> aseline starting in <br />South Prong Creek ~4~ outh of South Prong Creek Instantaneous, 6 x Year 6 x Year Peak Flow Period (Z> 017 <br /> Down-gradient of Dry Fork, SE <br />~ 1937-1947 and <br />Lower Minnesota Creek USGS fine anels, and SOD area ontinuous 3 x Year ~ <br />Peak Flow Period ~ 1985 to resent <br />Stations listed upstream to downstream relative to the Project <br />1) For sites with more than 5 years of data, lab parameters include TSS, TDS, Cond., pH, and Fe (diss & tot) <br />2) For sites with 5 years or less data see Table 2 <br />3) North Fork Stations lab parameters include Table 2 plus chromium, nickel, silver, cyanide, nitrite, and nitrate <br />4) New additions to monitoring program <br />December 2007 HydrOGeo, Inc. <br />