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1 <br />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, 1998 to <br />' September 30, 1999 <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 />1 quarter of 1981. This program was designed based on the results of the hydrologic baseline <br />studies which were initiated in 1978. The program was implemented to fulfill the regulatory <br />' requirements under the Federal Surface Mining Control and Reclamation Act (SMCRA) and the <br />Colorado Surface Coal Mining Reclamation 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 Monitoring 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 Facies, and Lower Sandstone Facies are referred to as <br />z <br />1 <br />