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• 2002 Mnual Hydrologic Report Pape 3 monitoring points. The ephemeral flow in Coal Creek is measured at culverts located between the two refuse disposal areas, SWGS 06. These culverts provide a stable cross section and are accessible throughout the year. The intermittent flow in Jerry Creek is measured at the culvert near the Highline Canal, SWGS 08. Beginning July 1999, instantaneous flows are to be monitored quarterly. Data taken during the Year are listed on data pages SR-2 for Coal Canyon and SS-2 for Jerry Creek. There were three seeps included in the hydrologic monitoring in 1995. The location of the seeps are shown on the Hydrologic Monitoring Map. They are located adjacent to Coal Canyon drainage and Jerry Creek. They are primarily evident by the white staining on the hillsides from evaporation of the seeps. None of them flow to the creek channel but generally evaporate within a couple of hundred feet of the source. On May 9, 2002 the springs were all dry. The monitoring results to date are shown on data page ST-1. There was no discharge from CDPS discharge points 005 thru 015 during the Year. These outtalls cover sediment pond discharges. Discharge point 015 is permitted to allow pumping water from the south end of the Roadside South Portal out the 2 West portals. • Piping to this point will not be installed. Discharge point 016 is permitted for gravity discharge from the northwest intake pool. It replaced outtalk 001 and 002 on March 31, 2002. Discharge point 001 was primarily used as an overflow to a mine water system for the preparation plant during mine operations. During March and April 2000, a discharge pipe was installed from the No.2 South Mains sump to outtall 001. The routing of this 4-inch diameter pipe is presented on permit Figure 14-6. The capacity of this discharge pipe is about 75 gpm. Data page SD-16 presents the results of weekly monitoring on Outfall 001. Flow ceased at discharge point 001 on March 31, 2002. Discharge point 002 is water siphoned from the reclaimed Northwest Intake Portal at the Roadside South Portals. Mine inflows that were not pumped to the preparation plantwere routed to an abandoned portion of the mine for discharge from this point. The preparation plantwas shutdown during December 1999 so all mine inflows in excess ofthose handled by outtall 001, flow north to the lower portion of the mine where they are handled by the siphon, outfall 002. Data page SE-11 presents a listing of water quality monitoring performed at this site during the Year. The average TDS was about the same as last year. The following table presents the average TDS measurements for outtall 002 for the last • four water years.