Laserfiche WebLink
• sporadic during the period prior to mining. Table 63 provides a summary of data collected at SW2 during the <br />yeaz. No unusual water quality chazacteristics are apparent. TCC will continue to monitor these locations. <br />One natural spring, 20-14, required semi-annual flow, field parameter, and water quality sampling during 2001. <br />Spring 20-14 is located in the vicinity of proposed future underground mining azeas. As reported in Table 57, no <br />flow was observed at site SW 1 during 2001. Thus, no flow, Seld parameters, or water quality samples could be <br />obtained for this site. Monitoring at the site was initiated in 1987 and flows have historically been minor (see <br />Figure 122). Conductivities historically exhibited by the spring aze presented as Figure 123. A statistical water <br />quality summary for the site is presented as Table 57a. <br />3.5 Saoil Saring Monitoring <br />Two spoil spring sites, 7 and the 303 series, require monitoring, The spoil spring monitoring program was <br />initiated in 1986 and is conducted annually. In accordance with the approved plan, the annual mine wide survey <br />is conducted during May with springs measured for flow and field pazameters. ff a spring is dischazging at or <br />above 35 gallons per minute, it is monitored for the next yeaz in accordance with the monitoring plan. <br />During the 2001 Water Year, spoil spring 7 flow was not measured m excess of 35 gpm and consequently <br />additional monitoring requirements were not triggered. 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 limited flow was observed at this location during the 2001 Water Yeaz, measurements were only taken in <br />October 2000, May 2001, and June 2001, and water quality sample also collected in May 2001. 2001 Water Yeaz <br />data for this site is presented as Table 58. A statistical water quality summary for the site is presented as Table <br />58a. Anew minimum value was recorded for lab conductivity, and new maximum values for dissolved sodium <br />and bicarbonate. <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 87-1. <br />No flow was observed at site 303-3 during 2001. Tables 59 through 61 provide summaries of the 2001 Water <br />Yeaz data collected at each 303 series spoils spring. Table 59a provides a period of record statistical summary of <br />collected data at site composite 87-1. Figure 124 provides a graphical representation of period of record field <br />conductivity for spoil spring 303-I. 2001 water quality pazameters for site 303-1 (Table 59) aze typically within <br />previously established ranges. <br />3.6 Mine Water Discharee Sites <br />Two mine water discharge sites associated with the TCC operations aze 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 set forth under CDPS Permit No. CO-0042161. Morutoring <br />• requirements at both sites were fulfilled during 2001. <br />12 <br />