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V <br />B. Surface and Ground Water Monitoring <br />Monitoring Wells (continued) <br />Parameters studied are: <br />Calcium - dissolved <br />Iron - dissolved <br />Magnesium - dissolved <br />Manganese - dissolved <br />Molybdenum - dissolved <br />Sodium - dissolved <br />Alkalinity, total (as CAC03 to pH 4.5) <br />Carbonate (as CO3 <br />Hardness (as CAC03> <br />Bicarbonate (as HCOg> <br />pH (pH units) <br />Specific conductance (mmhos/cm) <br />Lead - dissolved <br />Selenium - dissolved <br />Total dissolved solids (at 180 degrees C) <br />Chloride <br />Sulfate (SOq) <br />SAR <br />2. There is no surface water monitoring at the Keenesburg Mine Site. On <br />December 18, 1989 Technical Revision #23 approved the deactivation of <br />the NPDES permit with the Department of Health concurring. For <br />further information see pg 32 a-b, Section 2.03.10 and Appendix I-1 <br />of the permit. <br />II. Sealing of Drilled Holes and Underground Openings <br />1. The Division will require that each hole, well or other underground <br />opening be capped, sealed, backfilled, or otherwise properly <br />managed. (4.07.3>. <br />III. Backfilling and Grading <br />The applicant has requested additional time for backfilling and <br />grading following coal removal in a contour strip mine. A detailed <br />written analysis under 2.05.4(2>(c> has demonstrated that additional <br />time is necessary. Therefore, the Division proposes to approve the <br />additional time. (4.14.1) <br />The variance was granted with the approval of Technical Revision <br />No. 20 in February 28, 1989 to allow for use of the A and B pits as <br />fly ash disposal sites. <br />-14- <br />