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• quarterly for field parameters, and sampled on asemi-annual basis for water quality. The 303 Spring series is <br />monitored sampled semi-annually for field parameters and water quality. <br />During the 2002 Water Year, flow was observed for approximately 4 days (in mid September) at spoil spring 7 <br />(Table 58). <br />Tables 59 through 61 provide summaries of the 2002 Water Yeaz data collected at each 303 series spoils spring. <br />Table 59a provides a period of record statistical summary of collected data at site 303-1. Figure 124 provides a <br />graphical representation of period of record field conductivity for spoil spring 303-1. 2002 water quality <br />parameters for series 303 (Table 59) are typically within previously established ranges. No flow was observed at <br />site 303-3 during 2002. <br />3.6 Mine Water Dischart3e Sites <br />Two mine water discharge sites associated with the TCC operations are monitored. Site 109 requires quarterly <br />monitoring for flows, field parameters, and water quality samples, and site 115 is monitored as a CDPS discharge <br />point in accordance with the requirements se[ forth under CDPS Permit No. CO-0042161. Monitoring <br />requirements at both sites were fulfilled during 2002. <br />Table 64 provides a summary of the 2002 Water Yeaz data collected from site 109. Table 64A provides a period <br />• of record statistical summary of collected data at the site. Figure 125 provides a graphical representation of POR <br />field conductivity for mine water discharged at site 109. Actual discharge from site 109 was limited to <br />approximately four days in mid-September. This water was discharged into the Area No. 2 holding pit, where it <br />co-mingled with water from other underground sources. Water from this pit ran into Pond D via the site 7 spring, <br />where i[ discharged in to Foidel Creek at site 84 Pond D. Water quality samples were collected from 84 Pond D <br />and site 7 during [his period on September 16, 2002. In addition, a water sample was also collected from site 109 <br />on September 17, 2002. <br />Dewatering of the Southwest Mining District through site 115, suspended in February 1996, was resumed in <br />August of 1998. The 2002 Water Year data for mine water dischazge site 115 is presented on Table 65. Table <br />65A provides the period of record statistical summary. Table 65c presents water pumping records at site 115 for <br />the 2002 Water Year. At site 109, new maximum values were recorded for dissolved sodium, free ammonia, and <br />nitrate. At site 115 no new maximums or minimums were recorded. <br />3.7 CDPS Discharge Sites <br />Under State of Colorado Department of Public Health and Environment (CDPHE), Colorado Discharge Pemut <br />System (CDPS) permit No.'s CO-0027154, CO-0036684, and CO-0042161, numerous dischazge points at TCC <br />operations are monitored throughout the year. Note that CDPS has been refereed to as the National Pollutant <br />• Discharge Elimination System (NPDES) in previous AHRs. Monitoring results aze copied to DMG in <br />accordance with CDPS requirements. Tables 66 through 71 provide 2002 and historical data summaries for those <br />CDPS outfall points, other than mine dewatering site 115, which discharged during the year. The reader is <br />13 <br />