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1440 mg/1 TDS with a combined flow of 0.209 cfs at about 1580 mg/l TDS, a reduction in TDS <br />of about 4.8%. The impacts to Meehan Draw of Spoil Spring #4 are insignificant when compared <br />with the increase in TDS from SW -N207 (see surface water quality for SW -N207 in Appendix <br />2.04.7-2- 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 <br />northwest of the NHN boundary. Access into Coal Canyon in the vicinity of the confluence with <br />Meehan Draw is very difficult due to steep terrain and private property issues. NHN has <br />collected two water samples from Coal Canyon, (see Appendix 2.04.7-2) that provide regional <br />context and demonstrate the naturally occurring downstream degradation of water quality in this <br />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, NHN 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, <br />conductivity, and temperature) from two additional Meehan Draw stream monitoring sites. These <br />two sites are located approximately'/ mile downstream of the western border of the NHN Permit <br />Boundary. These two sites are adjacent to the permit area and will help assess the impact of <br />mining on the water quality of adjacent area. One of the sites is designated SW -N215 and is <br />located on the unnamed draw just upstream from the confluence with Meehan Draw. The second <br />site is designated SW -N216 and is located just downstream of the unnamed draw and the <br />confluence with Meehan Draw. The locations of these new monitoring sites are shown on Map <br />2.04.5-1. For a year NHN will also collect samples at both SW -N215 and SW -N216 for four <br />quarters following reclamation and prior to bond release. <br />Additionally, NHN 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, NHN will <br />collect, for a year, four quarterly water samples from SW -N217 which will be located just <br />upstream of the confluence of Calamity Draw (at the bridge) and the San Miguel River and at <br />SW -N218 which will be located just downstream of the confluence of Coal Canyon and the San <br />Miguel River. <br />These two new site locations are shown on Map 2.04.7-10. Surface water information collected <br />at San Miguel River will be the minimum requirement under Rule 2.04.7-2. Instantaneous stream <br />flow data from the USGS gauging stations located at the Brooks Bridge (USGS site 09174600) <br />and at Uravan (USGS site #09177000) will be reported for the times of sample collection. The <br />Section 2.05.6(3) Page 28 April 2016 (PR -01) <br />