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Requirement Require- Complied wkhZ Comment <br /> ment citation es / no <br /> The Eagle Mines aze on Segment 13b of the Lower <br /> Yampa/Grcen River Sub-basin of the Lower <br /> Colorado River Basin. CWQCC lists numeric <br /> standazds for Segment 13b in its regulation 3.7.0. <br /> The pemuttee monitors water in the Williams Fork <br /> River at a site upstream from Eagle's mining (WF- <br /> 1), and a site downstream from mining (WF-2). <br /> CWQCC Data from the upstream site indicate the Williams <br />I. Instream Numeric <br />re <br />ulation <br />es Fork River naturally exceeds the iron numeric <br />Standards g y standard frequently, and the lead and manganese <br /> 3.3.0 standards occasionally. Comparison of the <br /> upstream and downstream data indicate mining and <br /> reclamation operations at the Eagle Mines do not <br /> cause the numeric standazds to be exceeded. NPDES <br /> monitoring of mine pumping at outfalls 024 and 003 <br /> shows the quality and quantity of the pumped water <br /> would not cause an exceedance of Williams Fork <br /> River instream standards. <br /> CWCC Eagle 5 and 9 arc not subject to the Antidegradation <br />J. Antidegradation Rule because the receiving waters (Segment 136 of <br /> <br />Rule for Surface regulations <br />3.1.9(2) and <br />Y~ <br />the Lower Yampa/Green River Sub-basin of the <br />" <br />Water 3 <br />3 <br />0 Lower Colorado River Basin) aze designated <br />Use- <br /> . <br />. <br />. Protected". <br />K. Interim Narrative CWQCC <br />Standazd for regulation yes <br />Ground Water 41.S.C.6 <br />L. Sampling Exhibit 29 of <br />frequency at CDMG <br />surface water mining permit Y~ <br />monitorin sites C-81-044 <br />M <br />Pazameters to be Exhibit 29 of <br />. <br />sampled at C <br />Dmng yes <br />surface water sites mi <br />permit <br /> C-81-044 <br />N. Prevention of Surface water features in the permit azea are the <br />impacts to surface Williams Fork and Yampa Rivers. The postmining <br />water that CDMG land uses of rangelandlwildlife, pastureland, and <br />adversely impact regulation yes cropland can be expected to use water for watering of <br />the postmining 4.05.1(2) wildlife and livestock. Mining and reclamation <br />land use within operations at the Eagle Mines have not impaired <br />the permit azea surface water for these uses. <br />O. Sampling Exhibit 29 of <br />frequency of CDMG <br />ground water mining permit Yes <br />monitorin wells C-81-044 <br />1~A4P. 7 <br />