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Well Predicted TDS values (mQ/1) Thia years average TDS (mq/1) <br />• YOV2B 2587 1630 <br /> YW20 3045 890 <br /> YGAL16 1296 515 <br /> YGAL15 3548 3690 <br /> YAAL14 2036 1214 <br />Surface Water <br />Required surface water sites are monitored monthly (March to Oetobet) for flor and field <br />parameters (pH, temperature, and electrical conductivity [EC]). Samples obtained at these <br />sites axe analyzed for the surface water parameter list, Table 9, during April, May or <br />June, and September. A summary of surface water sites is provided in Table 10. The <br />current surface rater and spring monitoring program is presented in Table 15-9 of the <br />Yoast Mine PAP. <br />All surface rater data collected during this reporting period are provided in Appendix D. <br />• Included in this appendix and the folloxinq discussion are data from sites no longer part <br />of the required monitoring program. Data provided for required stream sites axe a watts <br />quality report, remarks (if present), and a surface rater hydsograph (except for Bite <br />YSGS). Also included (fOZ all required monitoring sites and certain nonraquired siteal <br />are TDS plots using the LOWESS method and TDS/milliequivalent tables (see preceding Ground <br />Water Quality section). Data fox spring sites (YSPG series) included a water quality <br />report, a listing of historic flor values, Ec LOWE9S plots, and TDS/milliequivalent <br />tables. <br />Site YSSF3. This site exists on Saqe Creek upstream of all potential Yoaat Hine <br />discharges. It is not currently a part of the required monitoring program (all Sage Creak <br />aStB9 are not required until two years prior to mining in the Saga Creek basin). <br />Site Y552. This Bite exiata on Saga Creek below all potential Yoaat Mine diachargea. It <br />is not euxrently a part of the required monitoring program. Only field pazametere axe <br />occasionally being monitored here. <br />• Site YSSF2. This site exiata on a Sage Creek tributary belor SCC's Seneca II-W rater <br />augmentation Pond Y1. It rill be the site of the proposed Ycaet NPDESI2 pond. It ie not <br />5 <br />