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were performed. Aquifer test data is found in Appendix 7-3, Tab 7. Ground water levels are <br />• measured with an electronic water level indicator. Water levels in some shallow alluvial wells <br />are measured directly with a steel tape. <br />Five wells were completed in 2001. These W-24 series wells (see Table 15-21 monitor the Sage <br />CreeklWolt Creek overburden, coal and underburden. These wells sailed in a landslide that <br />occurred in the spring of 2003. The well casings were all bent below ground surface let around <br />twenty feet deep). This prevented abandonment of these wells by normal methods. In October <br />2003, a gravel trench drain was established around these wells to direct water flow from the <br />broken well casings away from the toe of the Pond 016A dam. In 2005, an attempt to abandon <br />these wells will be made. The plan is to pull the steel surface casings with a crane or backboe. <br />Then cement will be poured down the hole until the hole is full. <br />In September 2004, replacements for the W-24 series wells were completed. Details for these <br />W-25 series replacement wells are provided here in Table 15-2 and in Appendix 15-3A. In <br />addition, well completion diagrams and lithologic logs may be found in Tab 7, Appendix 7-1. <br />Ground Water Quality Sample Handlings Preservation, and Analysis. The ground water parameter <br />list is contained in Appendix 15-2 IPre-October, 1991 Hydrologic Monitoring Programl• The <br />types of samples, preservatives, and bottles used in the monitoring program are contained in <br />Appendix 15-1. Raw/non-acidified and/or raw acidified water samples are taken from the <br />sampling site and placed into specialty prepared sample bottles. Dissolved constituent samples <br />are filtered in the field with a 0.45 micron membrane filter. Water samples are chilled by <br />packing the bottles in iced coolers, and then they are promptly taken to an EPA certified <br />laboratory }or chemical analysis. <br />AN water samples are field tested for pH, temperature, and electrical conductivity at the time <br />they are collected. The pH meter is calibrated before each day's use by performing a iwo-point <br />calibration using pH 7.0 and 10.0 buffer solutions. Single point calibration checks are performed <br />in the field. Conductivity meter calibrations are routinely verified using potassium chloride <br />solutions varying in strength from 1000 up to 3000 umhos/cm, depending on the availability of <br />the solutions from select vendors. Field conductivities reported prior to the end of water year <br />1989 are not temperature compensated. Peabody acquired a new conductivity meter with an <br />automatic temperature compensation probe as of October, 1989. The new conductivity meter is <br />calibrated before each day's use. Sampling protocol is reviewed and maintained in a systematic <br />fashion that delivers reliable data. Peabody will continue to implement improvements in <br />sampling protocol to minimize errors affecting field chemistry measurements and sample <br />collection. <br /> <br />TR-F7 11 Rmdend n7Mr: <br />