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• One natural spring (20-14) located in the vicinity of proposed future underground mining areas required semi- <br />annual flow/field parameter and water quality sampling during 1998. Monitoring requirements were me[ at [his <br />site in 1998. Monitoring at the site was initiated in 1987 and flows have historically been minor (see Figure 108). <br />Conductivities historically exhibited by the spring are presented as Figure 109. A statistical water quality <br />summary for [he site is presented as Table Sla. Several measured parameters occurred outside of the previously <br />established range in September, 1997. New minimums were established for dissolved calcium and bicarbonate. <br />New maximums were established for lab pH, and carbonate. <br />SPOIL SPRWG MONITORING <br />Two spoil spring sites, 7 and the 303 series, require monitoring under the approved program at TCC. Spoil spring <br />7 is monitored in accordance with [he approved spoil spring monitoring program. The spoil spring monitoring <br />program was initiated in 1986 and is conducted annually. In accordance with the approved plan, the annual mine <br />wide survey is conducted during May with springs measured for flow and field parameters. If a spring is <br />discharging at or above 35 gallons per minute, it is monitored for the next year in accordance with the monitoring <br />plan. During the 1998 Water Yeaz, spoil spring 7 flow was not measured in excess of 35 gpm and consequently <br />additional monitoring requirements were not triggett=d. Quarterly flow and field parameter data along with semi- <br />• annual water quality sampling is required from this site in addition to the spoil spring monitoring requirements. <br />As no flow was observed at this location during the 1998 Water Year, no measurements or parameters could be <br />obtained. 1998 Water Year data for this site is presented as Table 52. A statistical water quality summary for the <br />site is presented as Table 52a. <br />The 303 series spoil springs require monitoring on asemi-annual basis for Flows, field parameters, and water <br />quality samples. Water quality samples for these sites, historically, have been obtained from composite site 87-I. <br />Tables 53 through 55 provide summaries of [he 1998 Water Year data collected a[ each 303 series spoil spring. <br />Table 53a provides a period of record statistical summary of collected data at site composite 87-1. Figure 1 10 <br />provides a graphical representation of period of record field conductivity for spoil spring 303-1. Only one water <br />quality parameter was documented outside of the previously established ranges at this site in September (Table 5). <br />Manganese (TR) established a new maximum value. <br />M[NE WATER DISCHARGE SITES <br /> <br />