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• <br />Surface Water <br />Table 9 lists pertinent information on all NPDES, stream, and spring <br />monitoring sites at the Seneca II Mine. A complete description of the <br />surface water monitoring program may be found on Pages 7-336 to 7-355 of <br />the Seneca II PAP, and is summarized on pages 7-349/350. The NPDES <br />permit may be found in Appendix 7-2. All NPDES Discharge Points are <br />monitored monthly for field parameters (flow, temperature, pH, and <br />electrical conductivity) and NPDES lab parameters. Stream Monitoring <br />Sites SSG1, SSG2, SSG3 and SSLG5 are sampled three times a year for <br />field parameters and full-suite water quality. The first sample of the <br />year is collected during the spring runoff (March or April), the second <br />sample is collected after the spring runoff (May or June), and the third <br />sample is collected during base flow conditions (September). Full-suite <br />lab samples collected at all these sites were analyzed using the surface <br />water long list, Table 10. The twn Qr-ro-M <br />SSF11 and 13), and the two on Fish Creek tributaries (Sites SSC10 and <br />SSB12), are monitored monthly from May through July for field parameters <br />and full-suite lab samples. When no flow is observed at both the Cow <br />Camp and Bond Creek sites (Sites 10 and 12), the two Fish Creek sites <br />(Sites 11 and 13) are not monitored. At the Seneca II Mine, there are <br />ten spoil springs that are monitored for field parameters and full-suite <br />lab samples in the spring season. <br />Surface water quality data are presented in Appendix D. Data for each <br />site begins with a flow hydrograph of all historic data (plus an annual <br />hydrograph for NPDES sites), followed by a listing of individual water <br />quality and quantity data for the current water year, remarks, a TDS <br />regression plot using the LOWESS method (see Ground Water Quality <br />section), and then a listing of historic percent milliequivalent values <br />for major ions and TDS values. Crest stage gage rating curves are <br />presented in Appendix E. Lab samples are handled identically to <br />procedures discussed previously in the Ground Water Quality section. <br />• <br />9