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at about 1200 mg/1 TDS. Likewise, during the non - irrigation season the spoil spring water quality <br />is expected to be about 1440mg/1 TDS. <br />In the vicinity of SS #4 (see surface water monitoring station SW -N202 in Appendix 2.04.7 -2), <br />Meehan Draw has an irrigation season flow of 1.083cfs with about 990mg /1 TDS. During the non- <br />irrigation season the flow rate in Meehan Draw (SW -N202) is about 0.134 cfs with a TDS of about <br />1660 mg/l. During the irrigation season then, about 0.105 cfs of spoil spring with 1200 mg/l water <br />will mix with 1.083 cfs of Meehan Draw water at 990 mg /l for a flow of 1.188 cfs with a TDS of <br />about 1009 mg/l, a difference of about 1.9 %. During the non - irrigation season 0.134 cfs of <br />Meehan Draw water at 1660 mg/1 will mix with 0.075 cfs spoil spring water with 1440 mg/1 TDS <br />with a combined flow of 0.209 cfs at about 1580 mg /l TDS, a reduction in TDS of about 4.8 %. <br />The impacts to Meehan Draw of Spoil Spring #4 are insignificant when compared with the <br />increase in TDS from SW -N207 (see surface water quality for SW -N207 in Appendix 2.04.7 -2- - <br />inflow of Meehan Draw) as the result of irrigation water return flow. <br />Meehan Draw flows into Coal Canyon about 1.4 miles (stream distance 1.9 miles) to the northwest <br />of the NHN boundary. Access into Coal Canyon in the vicinity of the confluence with Meehan <br />Draw is very difficult due to steep terrain and private property issues. WFC has collected two <br />water samples from Coal Canyon, (see Appendix 2.04.7 -2) that provide regional context and <br />demonstrate the naturally occurring downstream degradation of water quality in this region. <br />Table 2.05.6(3) -2 is a summary of the projected impacts of both SS #1 and SS #4 on the flows of <br />Tuttle Draw and Meehan Draw. The projected impacts of SS #1 and SS #4 on Tuttle Draw and <br />Meehan Draw are insignificant when compared with the naturally occurring downstream <br />degradation of water quality in this region. Prior to mining disturbance in the drainage area of <br />Meehan Draw, WFC will collect, for one year, four quarterly (baseline) water samples (for <br />analyses as approved by CDRMS) and four quarterly field parameters (flow rate, pH, conductivity, <br />and temperature) from two additional Meehan Draw stream monitoring sites. These two sites are <br />located approximately %2 mile downstream of the western border of the NHN Permit Boundary. <br />These two sites are adjacent to the permit area and will help assess the impact of mining on the <br />water quality of adjacent area. One of the sites is designated SW -N215 and is located on the <br />unnamed draw just upstream from the confluence with Meehan Draw. The second site is <br />designated SW -N216 and is located just downstream of the unnamed draw and the confluence with <br />Meehan Draw. The locations of these new monitoring sites are shown on Map 2.04.5 -1. For a <br />year WFC will also collect samples at both SW -N215 and SW -N216 for four quarters following <br />reclamation and prior to bond release. <br />Additionally, WFC will collect water samples at two sites on the San Miguel River. Prior to <br />disturbance in the Meehan Draw drainage and prior to reclamation bond release, WFC will collect, <br />for a year, four quarterly water samples from SW -N217 which will be located just upstream of the <br />confluence of Calamity Draw (at the bridge) and the San Miguel River and at SW -N218 which <br />will be located just downstream of the confluence of Coal Canyon and the San Miguel River. <br />:tion 2.05.6(3) Page 28 February 2012 <br />