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monitored weekly for flow and pH. All five NPDES sites are monitored <br />monthly for NPDES parameters and field parameters. Samples obtained at <br />these stream and NPDES sites are analyzed for the surface water <br />parameter list, Table 10, during April, May or June, and September. <br />Spring sites are monitored in the spring season. The current surface <br />water and spring monitoring program is presented in Table 15-9 of the <br />Yoast Mine PAP. <br />All surface water data collected during this reporting period are <br />provided in Appendix D. Data for each site begins with a flow hydrograph <br />of all historic data (plus an annual hydrograph for NPDES sites), <br />followed by a listing of individual water quality and quantity data for <br />i <br />the current water year, and followed by remarks if present. This is <br />followed by a TDS regression plot using the LOWESS method (see the <br />Ground Water Quality section), and a listing of historic percent <br />milliequivalent values for major ions and TDS values. A statistical <br />report representing baseline (i.e., premining) data for each site <br />downstream of mining (when available) is provided in Appendix Dl. On <br />this statistics report, "censored data" refers to analytical values that <br />were below the detection limit, which were censored from the <br />min/max/mean calculations. The time frame for baseline conditions is <br />listed under "conditions specified" at the bottom of each page. <br />Sage Creek <br />- Site YSSF3. This site exists on Sage Creek upstream of all potential <br />Yoast Mine discharges. This year, flow was observed in September for the <br />first time since 1999. It displays a decreasing TDS trend. <br />- NPDESI2. Mining in this basin began in 2000. Reconstruction of the <br />water augmentation Pond Y1 (Site YSSF2) was completed on September 13, <br />1999. It is now referred to as Pond 012 (NPDESI2). This pond began to <br />flow again (after reconstruction) in April 2000. Flow at this pond is <br />continuous. The average flow value for this year was 0.1434 cfs, which <br />was 65% greater than the historic (2000-2009) average for Pond 012, <br />0.0867 cfs, and was 11% greater than the Pond Y1's historic (1991-1999) <br />9