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i <br />obtained at these stream and NPDES sites ar e analyzed for the surface <br />wate~i parameter list, Table 8, during April, May or June, and September. <br />Spring sites axe monitored in <br />I the spring and fall seasons. The current <br />surface water and spring moni toring program is presented in Table 15-9 <br />i <br />of the Yoast Mine PAP. <br />All ,surface water data collected during this. reporting period are <br />provided in Appendix D. Data provided for stream and NPDES sites are <br />a flow hydrograph, a water quality report,. and remarks (if present). <br />After the water quality report is a, statistics report .representing <br />baseline (i.e., premining) data for each site downstream of mining (when <br />available). ~ On this statistics report, "censored data" refers to <br />analytical values that were below the detection limit, which were <br />censored from the min/mar/mean calculations. The time frame for <br />baseline conditions is listed under "conditions specified" at the bottom <br />of each page. Also included are TDS plots using the LOWESS method and <br />TDS/milliequi valent tables (see preceding Ground Water Quality section). . <br />Data 'foi spring sites (YSPG series) included a water quality report, a <br />listing of historic flow values, electrical conductivity (EC) LOWESS , <br />plots„ and TDS/milliequivalent tables. <br />Sage 'Creek <br />- Site YSSF3. This site exists on Sage Creek upstream of all potential <br />Yoast Mine discharges. Its flow hydrograph indicates the lowest peak <br />flow since 1994 occurred this year. <br />- NPDE519. Construction of this pond was completed in September 2001. <br />No discharge has occurred yet. <br />- NPDE512. Reconstruction of the water augmentation Pond Y1 (Site <br />YSSF2) was completed on September 13, 1999. It is now referred to as <br />Pond 012 (NPDESI2). This pond began to flow again (after <br />reconstruction) in April 2000. Average flow in 2000 was 0.089 cfs and <br />in 2001 it was 0.060 cfs. A statistical summary of baseline chemistry . <br />data from Site YSSF2 (Y1 outflow) and Y553 (Y1 inflow) is provided in <br />~ 10 <br />I <br />