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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, 2021 to <br /> September 30, 2022 <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 16 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 />