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<br /> <br />Raton Creek Mine <br />1997 AHR -Page 2 <br />Field and laboratory data collected from the approved monitoring point on the Starkville <br />Diversion are shown on water quality Table 4. Diversion flow measurements are summarized <br />on Table 5. No surface flows were observed in the permanent diversion during the reporting <br />period. <br />The approved surface water monitoring program effectively monitors the impacts of mining <br />operations on the surface water system adjacent to the Raton Creek Mine site. Monitoring <br />data documented through the period of this report indicate no significant impacts to surface <br />water as a result of mining operations. <br />Discharges to streams <br />Monitoring data for the one NPDES outfall for the reporting period are summarized and <br />shown on to Table 6, below. A review of these data indicate that all discharges were within <br />NPDES permit limitations. Discharges through the NPDES outfall were sampled and reported <br />in accordance with the approved Colorado Wastewater Discharge permit. <br />TABLE 6 <br />Period: 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter <br />Panuneter: <br />pH (ave.) No discharge . '7.8 ~ No discharge B.1 <br />SeWeable <br />Solids (max J <br />0.1 ~ <br />0 <br />Oil and Grease none none <br />Iron (max.) X1.23 n!e <br />Quantity (Sal.) 24,000 19,000 <br />Precipitation Information <br />Precipitation data for the reporting period is summarized and shown on Figure 2. Total <br />precipitation was slightly higher for the year than the average documented in the permit <br />application. Storm events tended to be intermittent allowing time for the moisture to penetrate <br />into the ground and not cause excessive erosion on the site. <br />