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Peabody Sage Creek Mining, LLC <br />Page 4 <br />0514/2014 <br />for Surface Water <br />31.1.11 <br />times at four sites all four sites are springs. <br />Based on CWQCC reg. 31, the standard of 0.2 <br />mg /l, applies to plants grown in acidic soils <br />( <6.0 pH). In alkaline soils, as found on the <br />PSCM site, the EPA standard would be 10 mg /l. <br />The maximum manganese value observed at <br />any surface site was 7.14 mg /l at SSSPG10A. <br />9. Instream <br />CWQCC regulation <br />Two PSCM monitoring sites exist within the <br />Numeric Standards <br />33.0 <br />Fish Creek Drainage: The 004 outfall and SSC10 <br />are on Cow Camp Creek and discharge into <br />Fish Creek which is on Segment 13b of the <br />Yampa River basin. The stream standards for <br />Fish Creek are based on aquatic life standards. <br />Two samples from the Pond 004 outfall <br />exceeded the chronic selenium standard of 4.6 <br />ug /l, in April and May (4.9 and 6.4 ug /l). The <br />acute standard of 18.4 ug /l was not exceeded. <br />Two PSCM monitoring sites exist within the <br />Little Grassy Creek drainage: The 002 outfall <br />and SSLG5. SSLG5 drains the upper portion of <br />Little Grassy Creek which are undisturbed by <br />mining. Both sites discharge into Grassy Creek <br />which is on Segment 13e of the Yampa River <br />basin. The stream standard for Total <br />Recoverable Iron (1.0 mg /l) was exceeded at <br />the SSLG5 site (3.77 mg /l) and the Total <br />Mercury standard (0.0100 mg /l) was exceeded <br />at SSLG5 ( <0.200 mg /l). This site is upstream <br />of any mine discharges. <br />Six monitoring sites exist within the Grassy <br />Creek drainage: YSGF5, SSG1, 003 outfall, <br />SSG2, SSG3, and YSG5. Sites SSG1, SSG2, YSG5 <br />and YSGF5 exceeded the total recoverable iron <br />standard (1.0 mg /l) however, no exceedances <br />were noted at NPDES outfall 003. Site SSG2 <br />