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NUCLA PR NO. 2 <br /> Response: <br /> The MWCCS for Well GW-N4R on page 15-2-18 of Appendix 15-2 correctly <br /> shows the well location to be the Nucla Mine. The Table of Contents for <br /> Appendix 15-2 has been revised to correctly indicate that GW-N4R is <br /> located at the Nucla Mine. <br /> Comment: <br /> d. The MWCCS for Well GW-N26 should indicate that this well is located <br /> at Nucla. <br /> Response: <br /> The Table of Contents for Appendix 15-2 has been revised to correctly <br /> indicate that spoil well GW-N26 is located at the Nucla Mine rather than <br /> Nucla East. The MWCCS for spoil well GW-N26 in Tab 15, Appendix 15-2, <br /> page 15-2-3 correctly shows the well location to be the Nucla Mine. <br /> Comment: <br /> 3. Well completion logs found in Appendix H do not identify water <br /> bearing zones per Rule 2.04.6(2)(a)(iv)(A) . Please identify them <br /> on these logs. <br /> Response: <br /> Water bearing zones are identified on the lithologic logs in Tab 15, <br /> Appendix 15-2. There is a remark on the lithologic description that <br /> says "saturation" at or "wet" at a specific depth. Identification of <br /> water bearing zones on a few of the well completions cannot be supplied <br /> because the information could not be found in the field notes taken at <br /> the time of well construction. All of the well logs were reviewed to <br /> make sure identification of water bearing zones were indicated when the <br /> information was available. One correction was found and made in Tab 15, <br /> Appendix 15-2, Page 15-2-19. <br /> Comment: <br /> 4. What type(s) of packers were used in your wells? Will they have <br /> any influence on the water quality observed at the site? <br /> Response: <br /> The packers used in the monitor wells at Nucla were rubber formation <br /> packers. Monitor wells GW-N13 through GW-N21 also utilized metal cement <br /> baskets and they were placed, in all cases, above the rubber formation <br /> packers. <br /> Peabody has discussed the possibility of the rubber formation packers <br /> influencing the quality of water samples collected from the wells at the <br /> 5 <br />