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. Information on pond discharges and sediment pond inspections follows the hydrologic <br />' monitoring program information. <br />DESCRII'1TON OF THE HYDROLOGIC MONTI'ORING PROGRAM <br />The hydrologic program followed for the Carbon Junction Mine is described below. With <br />the approval of Technical Revision 03 in April 1997, the original hydrologic monitoring <br />program for the mine was modified. Technical Revision 03 modified the sampling <br />frequency for springs and groundwater wells to semi-annual, with the exception of <br />groundwater well 95-1, which was to be sampled quarterly in 1997, and semi-annually <br />thereafter. The springs to be monitored were identified as 1, 2, and 4. The groundwater <br />wells to be monitored were 17-B, 82-1, 82-4, and 95-1. <br />During the review of Technical Revision 08 in late 1997, an in-depth analysis of the <br />hydrologic monitoring program was undertaken. It was acknowledged that several <br />springs and groundwater wells had been either misidentified or identified with multiple <br />designations. The hydrologic monitoring program was modified in the permit text to <br />clearly identify the springs and groundwater wells to be sampled. <br />The current hydrologic monitoring program (pages 5-48 and 5-49 of the permit <br />document) requires the semi-annual sampling and analysis of springs 1 (upper Carbon <br />Junction Canyon), 3 (REA Canyon below the mine), and 4 (Carbon Junction Canyon <br />below the mine) when flowing, and the semi-anmial sampling and analysis of groundwater <br />wells 17-B (above the mine), 94-1 (mid-mine), and 95-1 (below the mine). The locations <br />of the springs and wells currently monitored aze depicted on Figure 1. <br />During the permit renewal process in 1998, Technical Revision 09 clazified the pazameters <br />to be analyzed when sampling is conducted (page 5-36a). <br />Spring Monitoring: Water Year 2003 <br />Spring 1 (Upper Carbon Junction Canyon) did flow once during the spring of water year <br />2003. This spring has been dry since the early 1980's, and flow this past spring is likely a <br />result of significant snowpack and melt resulting from one heavy snow event in mid-March <br />2003. Spring 3 (REA SPG #3) was sampled March 25, 2003. Spring 4 (CJ-LO-SPG #4) <br />was sampled December 27, 2002 and March 25, 2003. Both springs 1 and 3 were dry <br />during the December 27, 2002 sampling attempt. Spring 4 was flowing during both <br />sampling dates. Spring monitoring included a fiill-suite laboratory analysis as well as <br />collection of field parameters. During the December 27, 2002 and Mazch 25, 2003 <br />sampling, flow measurements were not obtained for the springs. <br />~~ <br />Carbon Junction Mira Page 2 <br />Annual Hydrologk Repartfor Water Year?AOS <br />