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• Well Monitorin¢: Water Year 2002 <br />The groundwater wells that were monitored in water yeaz 2002 were 17-B (upgradient of <br />the mine), 94-1 (located mid-mine), and 95-1 (located downgradient of the mine). Wells <br />17-B and 94-1 were sampled December 27, 2001, Mazch 20, 2002, June 26, 2002 and <br />September 5, 2002. Well 95-1 was sampled December 27, 2001, Mazch 20, 2002, and <br />September 5, 2002. Afull-suite analysis of parameters was conducted. During the <br />December 27, 2001 sampling no field parameters were collected for the wells. Field <br />parameters were collected during remaining sampling, with the exception ofwe1195-1 for <br />which field pazameters were collected during the September 5, 2001 sampling only. <br />SAMPLING METHODS <br />To ensure sampling consistency, CDS, Inc. or Acculabs, Inc personnel collected all water <br />samples at the Carbon Junction Mine during the 2002 water yeaz. All water samples were <br />analyzed at the Acculabs Inc. laboratory in Durango or Golden, Colorado. During this <br />water years sampling, there was some confusion over the wells to be sampled. This was <br />corrected during the last quarter of the water year. Sufficient sampling was conducted to <br />represent the chazacter of the wells during the water year. <br />Grab samples for the wells were taken by lowering the sample bottle into the wells with a <br />rope attached to a piece of PVC pipe. When the sample bottle reached the water it was <br />• filled and retrieved. Appropriately sized and labeled bottles for ground water sampling <br />were obtained from the laboratory prior to sampling. <br />A depth meter that was lowered down the well on a spool measwed depth to water. The <br />meter indicated it had reached the water by a beep (generated by an electric current), and <br />the measurement was taken. Meters were also used to determine pH, temperature, and <br />electrical conductivity from the grab samples. <br />Grab samples were collected from the springs as close to the visible source of water as <br />possible in an area of undisturbed flow. Appropriately sized and labeled bottles for <br />surface water sampling were obtained from the laboratory prior to sampling. Flow <br />measurements were derived for the springs by visually estimating the amount of water <br />flowing from the springs in gallons per minute. Meters were also used to determine pH, <br />temperature, and electrical conductivity from the spring flow in the field. <br />RESULTS -SPRINGS FOR WATER YEAR 2002 <br />Two springs were sampled during the 2002 water year. Spring 1 (Upper Carbon Junction <br />Canyon) above the mine did not flow during water yeaz 2002. The springs sampled were <br />Spring 3 (REA SPG #3) and Spring 4 (CJ-LO-SPG #4). Springs 3 and 4 originate below <br />the mine and permit area. Spring 3 (REA SPG #3) is approximately 1,000 feet south of <br />• <br />Garbon JancGOn Mlne Page 3 <br />Annual Hydrologic Report for Water Year 2002 <br />