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• Changes in mine personnel resulted in temporary confusion regazding reporting during this <br />water year. Quarterly sediment pond inspections were conducted but not documented <br />during the third and fourth calendar quarters of 1999. Monitoring of springs and wells <br />occurred during June 2000 (second calendaz quarter, thud water year quarter). A second <br />monitoring during this water yeaz for springs and wells did not occur, though sampling <br />occurred during October 2000 (thud calendar quarter, Srst water yeaz 2001 quarter). <br />DESCRIPTION OF THE HYDROLOGIC MONITORING 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 O8 in late 1997, an in-depth analysis of the <br />hydrologic monitoring program was undertaken. 1t was acknowledged that several <br />springs and groundwater wells had been either mis-identified 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 (page 5-36 of the permit document) requires <br />the semi-annual sampling and analysis of springs 1 (upper Carbon Junction Canyon), 3 <br />(REA Canyon below the mine), and 4 (Cazbon Junction Canyon below the mine) when <br />flowing, and the semi-annual sampling and analysis of groundwater wells 17-B (above the <br />mine), 94-] (mid-mine), and 95-1 (below the mine). <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 />Sprioe Monitoring: Water Year 2000 <br />Spring 1 (Upper Carbon Junction Canyon) did not flow during water year 2000. This <br />spring has been dry since the eazly 1980's. Spring 3 (REA SPG #3) was sampled in June <br />2000. Spring 4 (CJ-LO-SPG #4) was sampled in June 2000. Spring monitoring included <br />a full-suite laboratory analysis as well as collection of field parameters of pH, conductivity, <br />temperature, and flow. <br />Well Monitoring: Water Year 2000 <br />The groundwater wells which were monitored in water year 2000 were 17-B (upgradient <br />of the mine), 94-1 (located mid-mine), and 95-1 (located downgradient of the mine). All <br />• <br />-2- <br />