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Item No. 3 <br />Installation of at least two (2) new downgradient monitoring wells and commit to a third well located <br />downgradient of the current disposal area in Cut 12. <br />Two (2) new monitoring wells (MW-8 and MW-9) were installed in April 2000. The locations for these <br />wells were selected based on discussions with DMG personnel. In addition, three (3) piezometers were <br />installed to aid in evaluating the ground water flow direction in the Codel] Sandstone underlying the quarry <br />area. The locations of these wells and piezometers are included on Figure 2. Based on the results of the <br />water level monitoring, it appears that monitoring well MW-7 is downgradient of the CKD disposal areas <br />previously identified as Cuts 4, 6 and 8. Holnam also recently installed an additional monitoring well <br />closer to the downgradient extent of these CKD disposal areas. The well was installed on February 26, <br />2001 and will be included in the next quarterly ground water sampling to be performed in May 2001. <br />Item No. 4a <br />Sample and analyze ground water from the two (2) new monitoring wells and from MW-7 for a period of <br />five (5) quarters. <br />Four (4) quarters of ground water monitoring have been performed. Upon completion of the five (5) <br />quarters of monitoring (May 2001), a report summarizing the results, along with a proposed ground water <br />monitoring plan, will be submitted to the DMG. <br />Item No. 4b <br />Preparation of a groundwater monitoring plan after the completion of five (5) quarters of monitoring. <br />As discussed above, this groundwater monitoring plan will be submitted after the completion of the fifth <br />quarter of sampling, which will be performed in May 2001. <br />Item No. 5 <br />Add the 100-year flood plain to the map (Figure 2) submitted with the Technical Revision and address the <br />protection of the CKD in Cut 12 (Cut 2000) if it is below the elevation of the 100-year flood plain. <br />Appropriate flood plain maps were acquired from FEMA. The maps for this area do not have flood plain <br />elevations; however, we were able to scan these maps and overlay them on Figure 2 with reasonable <br />accuracy. As indicated in Figure 2, the CKD in Cut 2000 is well protected from flooding events of the <br />Arkansas River by approximately a 30- to 40-foot elevation difference and an approximate 325-foot buffer <br />between the river and Cut 2000. <br />Item No. 6 <br />Why are the CKD disposal areas on the south side of the river not included in the Technical Revision? <br />DMG suggests it might be appropriate to include these areas within the permit area. <br />