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2.0 SUMMARY OF HYDROLOGY MONITORING DATA <br />The Deserado Mine hydrology monitoring program was initiated during the first quarter of 1981 <br />and succeeds the baseline hydrologic monitoring and inventory program that was initiated in <br />1978. The purpose of this section of this report is to: <br />• Describe the Deserado Mine hydrology monitoring program <br />• Summarize the hydrology monitoring data collected from October 1, 2001 to <br />September 30, 2002 <br />Compare the hydrology data collected during this reporting period with the data from <br />the baseline hydrology inventory <br />2.1 Description of the Deserado Mine Hydrologic Monitoring Program <br />' An ongoing hydrologic monitoring program for the Deserado Mine was initiated during the first <br />quarter of 1981. This program was designed based on the results of the hydrologic baseline <br />studies that were initiated in 1978. The program was implemented to fulfill the regulatory <br />' requirements under the Federal Surface Mining Control and ReGamation Act (SMCRA) and the <br />Colorado Surface Coal Mining ReGamation Act. <br />2.1.1 Surface Water Monitoring Program <br />The surface water monitoring program at the Deserado Mine has been discontinued as of <br />August 11, 1997 pursuant to the approval of a technical revision application (TR47). For a <br />history of the surface water monitoring program, please refer to Deserado Mine's Fourteenth <br />Annual Hydrology Report. <br />2.1.2 Ground Water Monitorino Program <br />The Deserado Mine groundwater monitoring program consists of monitoring water depths from <br />bedrock strata and water depth and quality from the White River alluvium. Bedrock hydrology <br />monitoring is conducted at 16 bedrock wells on eleven (7) locations while alluvial hydrology <br />monitoring conducted at one location -the one remaining after Kenney Reservoir was filled <br />(Qal-5). The locations of each of the groundwater monitoring sites are shown on Plate 1 in the <br />pocket of this report. Bedrock monitoring consist of collecting hydrologic data from monitoring <br />holes and multiple completions at each location in order to monitor three zones: the Upper <br />Sandstone Facies; the Coal and Siltstone Facies; and the Lower Sandstone Facies. The Upper <br />Sandstone Facies, coal and Siltstone Faces, and Lower Sandstone Facies are referred to as <br />2 <br />