2014-07-11_REPORT - C1980007 - Laserfiche WebLink

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West Elk Mine 2013 Annual Hydrology Report 14 Table 3. Summary of the Surface Water Monitoring Program Monitoring Station �� Monitored Area Flow Measurement FField WQ Annual Lab Water Period of Record EC, T) Quality Surface Stations Upper North Fork of the Gunnison River Drainage Basin Up- gradient of SE mine panels; Upper Deep Creek down - gradient of SOD mine Instantaneous, 3 x Year 3 x Year Peak Flow Period ' 1996 to present panels area Lower Deep Creek Down - gradient of SE mine panels Instantaneous, 3 x Year 3 x Year Peak Flow Period "' 1996 to present area Upper Raven Gulch W. Flatiron mine panels area Instantaneous, 3 x Year 3 x Year Peak Flow Period 2005 to present Lower Raven Gulch W. Flatiron mine panels area Instantaneous, 3 x Year 3 x Year Peak Flow Period 2005 to present Box Canyon Down - gradient of Box Canyon Instantaneous, 3 x Year 3 x Year Peak Flow Period 1999 to present mine panels area North Fork Upper Up- gradient of mine facilities and Continuous 3 x Year Low Flow Period, Peak 1977 to present (USGS 09132500)) mine discharge points Irrigation Season (3) Up- gradient of mine surface Upper Sylvester Gulch facilities area and NE mine Instantaneous, 3 x Year 3 x Year Peak Flow Period 11) 1977 to present panels Down - gradient of mine water Middle Sylvester Gulch discharge point and NE mine Continuous 3 x Year Peak Flow Period 13) 1977 to present panels Down - gradient of mine surface Lower Sylvester Gulch facilities area and NE mine Not Measured 3 x Year Peak Flow Period 1977 to present panels Surface Stations Lower North Fork of the Gunnison River Drainage Basin North Fork Lower Down - gradient of mine facilities Not Measured 3 x Year Low Flow Period, Peak 1935- present and mine discharge. Irrigation Season Lower Gribble Gulch Jumbo Mountain and NW mine Instantaneous, 3 x Year 3 x Year Peak Flow Period") 1977 to present panels area Surface Stations Minnesota Creek Drainage Basin Lick Creek Flume Up- gradient of SOD mine panels Continuous 3 x Year Peak Flow Period 1977 to present area Upper Dry Fork Flume SOD mine panels area Continuous 3 x Year Peak Flow Period 1977 to present Middle Dry Fork Flume SOD mine panels area Continuous 3 x Year Peak Flow Period ' 1977 to present Lower Dry Fork Flume Down - gradient of SW and SOD Continuous 3 x Year Peak Flow Period 1977 to present mine panels area Minnesota Reservoir Flume Down - gradient of SW and SOD Continuous 3 x Year Peak Flow Period 2006 to present mine panels area Deep Creek Ditch Flume Up- gradient of SOD mine panels Continuous 3 x Year Peak Flow Period 2006 to present area Poison Gulch SOD mine panels area Instantaneous, 3 x Year 3 x Year Peak Flow Period ' 2005 to present Deer Creek SOD mine panels area Instantaneous, 3 x Year 3 x Year Peak Flow Period ' 2005 to present Horse Gulch Down- gradient of the SW mine Instantaneous, 3 x Year 3 x Year Peak Flow Period" 1977 to present panels area East Gulch, East of Horse Gulch SOD and SW mine panels area Instantaneous, 3 x Year 3 x Year Peak Flow Period" 1977 to present Upper Minnesota Creek (USFS) SOD mine panels area Continuous 3 x Year Peak Flow Period 1977 to present Lower Minnesota Creek (USGS) Down - gradient of SOD and SW Continuous 3 x Year Peak Flow Period 1937 -1947 and mine panels area 1985 to present South Prong Creek Mouth of South Prong Creek Instantaneous, 6 x Year 6 x Year Peak Flow Period ``) Baseline will start in 2017 SW mine panels area — southwest B -seam longwall panels SE mine panels area - southeast B -seam longwall panels Box Canyon mine panels area - Box Canyon B -seam longwall panels W. Flatiron mine panels area - West Flatiron B -seam longwall panels Jumbo Mountain mine panels area - Jumbo Mountain B -seam longwall panels SOD mine panels area - South of the Divide E -seam longwall panels '> For sites with more than 5 years of data, lab parameters include TSS, TDS, EC, pH, and Fe (dissolved & total) Z) For sites with 5 years or less data see Table 2 3) North Fork of the Gunnison and Middle Sylvester Gulch expanded parameters include those listed in Table 2 for surface water, plus chromium, nickel, silver (total), cyanide (total), iron (total recoverable) nitrate /nitrite (as N), alkalinity (Total CaCO3), bicarbonate, carbonate, hydroxide; nitrogen (ammonia), phosphorous -ortho, and sodium adsorption ratio (SAR). June 2014 HydroGeo, Inc.