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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 <br />1981 and succeeds the baseline hydrologic monitoring and inventory program that was <br />initiated in 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, 2006 to <br />September 30, 2007 <br />• Compare the hydrology data collected during this reporting period with the data <br />from 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 <br />first quarter of 1981. This program was designed based on the results of the hydrologic <br />baseline studies that were initiated in 1978. The program was implemented to fulfill the <br />regulatory requirements under the Federal Surface Mining Control and Reclamation Act <br />(SMCRA) and the 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 <br />Fourteenth Annual Hydrology Report. <br />2.1.2 Ground Water Monitoring Program <br />The Deserado Mine groundwater monitoring program consists of monitoring water depths <br />from bedrock strata and water depth and quality from the White River alluvium. Bedrock <br />hydrology monitoring is conducted at 19 bedrock wells on nine (9) locations while alluvial <br />hydrology monitoring conducted at one location -the one remaining after Kenney Reservoir <br />was filled (Qal-5). The locations of each of the groundwater monitoring sites are shown on <br />Plate 1 in the pocket of this report. Bedrock monitoring consists of collecting hydrologic <br />data from monitoring holes and multiple completions at each location in order to monitor <br />three zones: the Upper Sandstone Facies; the Coal and Siltstone Facies; and the Lower <br />Sandstone Facies. The Upper Sandstone Facies, coal and Siltstone Facies, and Lower <br />Sandstone Facies are referred to as upper, middle and lower respectively as a matter of <br />2 <br />