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Ground Water Quality Summary. The TDS trend at Well 68 and 72 are <br />decreasing. No CDPHE agricultural ground water standards were exceeded <br />this year. With the exception of iron (see above) , no GWPOC standards <br />were exceeded this year. In the area surrounding Seneca II, ground water <br />is not being pumped for irrigation or livestock watering purposes, nor <br />has the CDPHE classified any aquifer in this region for any use. The <br />above discussion is provided only to serve as a comparative basis to <br />judge ground water quality. Domestic wells that provide drinking water <br />for local residents are not from aquifers impacted by mining. <br />Surface Water <br />Table 8 lists pertinent information on all NPDES, stream, and spring <br />monitoring sites at the Seneca II Mine. A complete description of the <br />old surface water monitoring program may be found on Pages 7 -336 to 7- <br />355 of the Seneca II PAP, and is summarized on pages 7- 349/350. The <br />revised program is provided in the PR -02 package (Volume 14) on page <br />2.04.7 -2. NPDES Discharge Point 008 is monitored monthly for field <br />parameters (flow, temperature, pH, and electrical conductivity) and <br />NPDES lab parameters. The NPDES permit is provided in Appendix 7 -2 of <br />the PAP. The two stream sites on Fish Creek (Sites SSF11 and 13) , and <br />the one on the Fish Creek tributary, Bond Creek (Site SSB12), is <br />monitored monthly in June and July for field parameters and lab samples. <br />When no flow is observed at both the Cow Camp Creek Site SSC10 (a PSCM <br />site) and Bond Creek Site SSB12, the two Fish Creek sites (Sites 11 and <br />13) are not monitored. At the Seneca II Mine, Spoil Spring SSSPG9 is <br />monitored for field parameters and a lab sample in the spring season. <br />Lab samples collected at all these sites were analyzed using the surface <br />water revised long list, Table 9. <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 last two water years, remarks and a <br />TDS regression plot using the LOWESS method (see Ground Water Quality <br />