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Appendices F and G are water quality statistics reports for surface water monitoring sites <br /> at both the Nucla and Nucla East mining areas. Appendix F includes statistics on total <br /> values for metals, while Appendix G includes statistics on total recoverable values for <br /> the same parameters. It should be noted that statistics were performed on all historic <br /> data for each site, which may or may not include historic values determined using <br /> different detection limits than are currently being employed by Peabody's present contract <br /> laboratory (ACZ Laboratories, Steamboat Springs, Colorado). The computer program used to <br /> calculate the statistics and generate these reports includes those analyses results <br /> reported as "less than" the detection limit, resulting in means and minimum values of <br /> parameters not representative of the parameter sample population. Peabody is currently <br /> working on rectifying this problem and will submit more accurate statistical reports in <br /> future AHR's. <br /> Ground Water <br /> Monitoring Programs at Nucla and Nucla East. The locations of all monitoring wells within <br /> and adjacent to the Nucla and Nucla East mining areas are shown on Exhibit 1. Presented <br /> on Table 5 are all ground water monitoring well site and completion summaries for the <br /> Nucla and Nucla East mining areas. <br /> Explanations and interpretations of the data presented in this section are as succinct as <br /> possible. A detailed explanation of the hydrologic monitoring program will be presented <br /> in the forthcoming Nucla East Mine Permit Application. <br /> New Wells. During the 1987 water year three additional spoil monitor wells (GW-N26 <br /> through GW-N28) were installed at the Nucla Mine to help better define the spoils aquifer <br /> system. In addition to the three spoil monitor wells at Nucla Mine, Peabody also <br /> installed Monitor Well GW-N4R as a replacement well for GW-N4. To better define baseline <br /> ground water conditions at the Nucla East mining area, Peabody completed five exploration <br /> bore holes into monitor wells. Those wells are GW-N30 through GW-N34. Completion <br /> summaries for the newly installed monitor wells are presented on Table 5, and lithologic <br /> logs and well completion summaries (including drawings for each of the new monitor wells) <br /> are contained in Appendix H. <br /> Water Levels. All water level data collected through the 1987 water year from the various <br /> aquifers within an adjacent to the Nucla and Nucla East mining areas are presented in <br /> 13 <br />