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<br />1 <br />1983 HYDROLOGIC MONITORING REPORT <br />' PERMIT 79-177, ENERGY MINES 1, 2 AND ECKMAN PARK <br />OPERATOR: COLORADO YAMPA COAL COMPANY <br />1 <br />' INTRODUCTION <br />The Energy 1, 2 and Eckman Park Mine is a surface mining operation located <br />t approximately 20 miles southwest of Steamboat Springs, Colorado. A <br />comprehensive hydrologic monitoring program has been conducted at the mine site <br />from 1979 to the present. The monitor sites, frequency, and list of parameters <br />to be monitored are based on requirements of State Mining Permit 79-177 and <br />NPDES Permit CO-0027154. Water quality samples are analysed according to <br />' schedules derived from "Guidelines for the Collection of Baseline Water Quality <br />and Overburden Chemistry Data" (CMLRD, September 16, 1982) and NPDES Permit CO- <br />0027154 (CWQCD, October 7, 1983). <br />' MONITORING PROGRAM DESCRIPTION <br />The plan for monitoring consists of field and laboratory measurement of <br />' water at Surface Discharge Points (SDP), Selected Surface Stations (SSS), Sample <br />Sites (SS), Bedrock Wells (BW) and Alluvial Wells (AW). The sites are shown on <br />' the map entitled CYCC Hydrologic Monitoring Program. The schedule for <br />monitoring is shown on the attached tables, and is described below. <br />' Ground water monitoring consists of water level measurement of bedrock <br />monitor wells quarterly and alluvial wells monthly. Sampling for full-suite <br />' analysis is performed for bedrock and alluvial wells twice per year in April and <br />October; alluvial wells are also sampled for major ions in January and July. <br />' Wells sampled are shown in the attached table, 1983 Ground Water Monitoring. At <br />the time of ground water sampling, temperature, pH and electrical conductivity <br />' are measured using EPA-approved equipment. The parameters analyzed for bedrock <br />wells (BW) and alluvial we17s (AW) are shown in the attached table, 1983 Ground <br />Water Quality Analyses. <br />Surface water monitoring consists of flow measurement and sampling of <br />~ ' selected surface stations, discharge points and sample sites on a weekly basis <br />1 <br />