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The historical summary of Flow rate data for selected surface sites is presented as Table 56. This table also provides flow summary information for discharge sites 62, 109, and 115. NATURAL SPRING MONITORING Two natural springs, SWI and SW2, located over previously mined areas in the Southwest Mining District required monitoring during 2000. Quarterly flow, field parameter, and water quality samples are required for these sites. All required monitoring was completed during 2000. Tables 62 and 63 provide summaries of data collected at these sites during the year. No unusual water quality characteristics are apparent. No Flow at site SWl was observed during 2000. Prior to mining, SWl typically flowed throughout the year. SW2 exhibited flows through the spring and summer of the 2000 Water Year. SW2 flows were historically sporadic during the period prior [o mining. TCC will continue [o monitor these locations. Une natural spring, 20-14, required semi-annual flow, field parameter, and water quality sampling during 2000. Spring 20-14 is located in the vicinity of proposed future underground mining areas. Monitoring requirements were met at this site in 2000. Tables 57 provides a summary of data collected at this site during the year. No flows were recorded during 2000. Monitoring at the site was initiated in 1987 and Flows have historically been minor (see Figure 122). Conductivities historically exhibited by the spring are presented as Figure 123. A statistical water quality summary for the site is presented as Table 57a. C~ SPOIL SPRING MONITORING Two spoil spring sites, 7 and the 303 series, require monitoring under the approved program at TCC. Spoil spring 7 is monitored in accordance with the approved spoil spring monitoring program. The spoil spring monitoring program was initiated in 1986 and is conducted annually. In accordance with the approved plan, the annual mine wide survey is conducted during May with springs measured for flow and field parameters. If a spring is discharging at or above 35 gallons per minute, it is monitored for the next year in accordance with the monitoring plan. During the 2000 Water Year, spoil spring 7 flow was not measured in excess of 35 gpm and consequently additional monitoring requirements were not triggered. Quarterly flow and field parameter data along with semi- annual water quality sampling is required from this site in addition to the spoil spring monitoring requiremenu. As no flow was observed at this location during the 2000 Water Year, no measurements or parameters could be obtained. 2000 Water Year data for [his site is presented as Table 58. A statistical water quality summary far the site is presented as Table 58a. The 303 series spoil springs require monitoring on asemi-annual basis for flows, field parameters, and water quality samples. Water quality samples for these sites, historically, have been obtained from composite site 87-1. Tables 59 through 61 provide summaries of the 2000 Water Year data collected at each 303 series spoil spring. 10