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• instances observed at this site include elevated total alkalinity and bicarbonate values and new maximum total <br />recoverable iron and manganese measurements. Spoil spring 7 renewed discharge in May 1995 for the first <br />fime since June 1994 as the low quality coal stockpile completely filled the Area No. 2 pit upstream of this <br />site and disrupted the previously established flow pattern. <br />The 303 series spoil springs require monitoring on asemi-annual basis for flows, field parameters, and <br />water quality samples. During 1995, water quality samples for these sites were obtained from composite <br />site 87-1. Tables 38 through 40 provide summaries of the 1995 Water Year dab collected at each 303 series <br />spoil spring. Table 38a provides a period of record statistical summary of collected data at site composite <br />87-1. Figure 82 provides a graphical representation of period of record field conductivity for spoil spring <br />303-1, No unusual water quality parameter levels were returned from this site during 1995. <br />MINE WATER DISCHARGE SITES <br />Two mine water discharge sites associated with the TCC operations are monitored. Site 109 requires <br />quarterly monitoring for flows, field parameters, and water quality samples, and site 115 is monitored as <br />an NPDES discharge point in accordance with the requirements set forth under NPDES Permit No. CO- <br />0042161. Monitoring requirements at both sites were fulfilled during 1995. Table 41 provides a summary <br />• of the 1994 Water Year data collected from site 109. Table 41a provides a period of record statistical <br />summary of collected data at the site. Table 41b presents water meter readings at site 109 for the 1994 <br />Water Year. Figure 82 provides a graphical representation of period of record field conductivity for mine <br />water discharged at site 109. With the exception of a new maximttm TDS and lab conductivity values <br />recorded in September, all monitored water quality parameters at site 109 returned values within previously <br />established ranges during the 1995 Water Year. <br />1995 Water Year data for mine water discharge site 115 is presented on Tables 42 and 42a. Table 42 <br />provides the 1995 Water Year statistical summary of collected data and Table 42a provides the period of <br />record statistical summary. Table 42b presents water pumping records at site 115 for the 1995 Water Year. <br />Figures 84 and 85 provide graphical representations of Water Year flow rate data and field conductivity data <br />respectively. <br />NPDES DISCHARGE SITES <br />Numerous additional NPDES discharge points associated with the TCC operations are monitored throughout <br />the year with monitoring results submitted to the Division on a periodic basis in accordance with permit <br />requirements. Tables 43 through 48a provide Water Year and period of record data summaries for those <br />• outfall points other than mine dewatering site 115 which discharged during the year. The reader is referred <br />to the Discharge Monitoring Reports (DMRs) submitted during the year for additional information regarding <br />-10- <br />