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. that 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 />The following discussion of water quality will limit itself to a <br />description of TDS trends. A separate section, Comparison of Surface <br />Water Quality to Water Ose Standards, will list those samples that <br />exceed water use standards. Lab samples are handled in a matter <br />identical to what was discussed earlier in the ground water section. For <br />the sake of brevity, the prefix that precedes all surface water site <br />names will often be dropped throughout this report. As an example, Site <br />SW-S2W-SG7 (WSH7) will be referred to as Site 7. <br />Hubberson Gulch / Drv Creek <br />- Surface Water Site SW-S2W-SG9 (WSH9). This Hubberson Gulch site is <br />upstream of NPDESI7 and all other mine related discharges in the II-W <br />. South Expansion area. Monitoring at this site began in August 1997. No <br />monitoring was performed in the 1999 calendar year, but was resumed in <br />2000. This site is monitored in June and September. <br />- Surface Water Site SW-S2W-SG17 (WSH17). This Hubberson Gulch site <br />exists at the site of the proposed NPDES 017 Pond in the II-W South <br />Expansion area. Monitoring at this site began in August 1997. No <br />monitoring was performed in the 1999 calendar year, but was resumed in <br />2000. This site is monitored from June through September. Construction <br />of Pond 017 began on October 14, 2002 and was completed in December. <br />- NPDES 016 (NPDESI6). This site exists on a Hubberson Gulch tributary <br />in the II-W South area. Pond 016 was nearly complete in September 2000, <br />and first discharged in April 2001. It is monitored weekly except when <br />inaccessible by truck. The average flow each water year was 0.019 cfs in <br />2001 and 0.037 cfs in 2002. TDS values at this site are increasing. <br />Baseline data from Site SW-S2W-SG16 (WSH16) has been provided in <br />• Appendix E1. <br />13 <br />