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2.2.1.4 Bedrock Water Quality Water sampling and analysis are no longer required <br />from most of the bedrock monitoring holes. However, as required by DRMS, prior to <br />entering Federal leases C-8424 and C-8425, one water quality sample was collected and <br />analyzed from each of the monitoring holes in federal leases C-8424 and C-8425. Such <br />sampling was limited to the middle (coal facie) zone. <br />BME has agreed to sample the point of compliance monitoring well on an annual basis <br />starting with the 2006-2007 hydrologic year. The current point of compliance is <br />monitoring well 29-4M. Samples will be analyzed for dissolved iron and manganese and <br />total dissolved solids. Field parameters measured are pH, conductivity, and temperature. <br />Results for this well are found in Appendix C. <br />The Deserado Mine First Annual Hydrology Report (December 1985) contains baseline <br />water quality data for the bedrock zones except for wells in federal leases C-8424 and C- <br />8425. Baseline water quality data for these wells are given in the Thirteenth Annual <br />Hydrology Report (January 1998). Water quality data for 32-7M was collected in 2001 <br />prior to mining it out and is included in Appendix C of the Seventeenth Annual Hydrology <br />Report (January 2002). Comparing the 2001 data to the 1997 data indicated only slight <br />changes with a general improvement in quality for most parameters of 32-7M. <br />Water quality data for 30-8M was collected in December of 2006 prior to depletion of <br />water to the adjacent workings. Comparing the 2006 data to the 1997 data indicates a <br />general improvement in water quality. <br />2.2.1.5 Mine Water Balance Table 2-2 shows the water balance for the Deserado Mine. <br />No water has been pumped from underground workings since January 10, 1996. During <br />the 1996-1997 period, Deserado Mine started disposing the prep plant thickener water in <br />the mined out area of the D-Seam (the first longwall district). This water would have been <br />otherwise discharged through Pond PP-2. <br />8 <br />