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again, minimal stream flow at E-1 after spring snowmelt. An analysis of the limited data <br />suggests there is no adverse impact of the Elk Creek Mine to Lower Elk Creek. <br />E-2- Upper Elk Creek <br />Surface water monitoring point E-2 - Upper Elk Creek, an ephemeral drainage, is monitored to <br />verify that the Elk Creek mine does not have an adverse affect on the quality of runoff in the <br />drainage. In addition, the site will serve as an up-gradient site to monitor Elk Creek prior to <br />entering the OMLLC surface facility. During 2010 there was, again, minimal flow at E-2 after <br />spring snowmelt. An analysis of the limited data suggests there is no adverse impact of the Elk <br />Creek mine to Lower Elk Creek. <br />S-1 - Upper Sanborn Creek and S-2 - Lower Sanborn Creek <br />Surface water monitoring points S-1 - Upper Sanborn Creek and S-2 - Lower Sanborn Creek <br />were established to monitor the flow in ephemeral Sanborn Creek above and below the disturbed <br />area of the Sanborn Creek Mine site. Historically, Sanborn Creek also received mine water <br />discharge from the Sanborn Creek Mine, consisting primarily of natural mine water inflows and <br />some runoff of imported (from the North Fork intake) water from the mining sections. The mine <br />water discharge (CDPS discharge point 011) commingled with upper Sanborn Creek flow for a <br />distance of approximately 300 feet through culverts under the railroad and highway prior to <br />discharging into the North Fork of the Gunnison River. The S-2 sample site is located at the <br />® outlet of the culvert, prior to the confluence with the river. Because of the 2003 closure of the <br />Sanborn Creek mine, and the termination of discharge Outfall point 011, the S-2 sample site was <br />no longer needed and, thus, eliminated from the OMLLC hydrologic monitoring program in <br />2004. (see TR-45). <br />Sanborn Creek, an ephemeral stream, flows at monitoring point S-1 during spring runoff and <br />significant precipitation events. During 2010, S-1 had the usual minimal flows and by mid-June <br />flows had ceased altogether. An analysis of the limited data suggests there is no adverse impact <br />of the Sanborn Creek mine to Sanborn Creek. <br />C-1 - Lower Coal Gulch <br />Surface water monitoring point C-1 - Lower Coal Gulch, an ephemeral drainage, is monitored to <br />verify that the Sanborn Creek mine does not have an adverse affect on the quality of runoff in <br />this drainage. During 2010 there was, again, minimal flow in Coal Gulch during spring <br />snowmelt, and no flow after snowmelt was completed. An analysis of the limited data suggests <br />there is no adverse impact of the Sanborn Creek mine to Lower Coal Gulch. <br />NF-1 and NF-3 - North Fork of the Gunnison River <br />Surface water monitoring points NF-1 (North Fork upstream) and NF-3 (North Fork <br />downstream) were selected to monitor the water quality in the North Fork of the Gunnison River <br />above and below the disturbed surface mine site of the Sanborn Creek and Elk Creek Mines. <br />Monitoring point NF-3 was established in September 1997 to monitor for any mining-related <br />water quality impacts from the West Valley coal refuse pile. It should be noted that NF-3 is also <br />downstream from the town of Somerset and monitoring results for this station most likely