2012-01-13_APPLICATION CORRESPONDENCE - C2010089 (2)

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C -2010 -089 New Horizon North Mine PARNos. 1- 1A -1B, 2- 2A -2B, 3 Page 13 of 60 6. It is not clearly explained how the overburden analytical data are presented when comparing Table 2.0.4.6 -2 and Appendix Table 2..04.6 -2 with the laboratory analytical reports contained in Appendix 2.04.6 -3. There are numerous samples listed on the laboratory reports for East Nest, Northwest Nest, and Southwest Nest which presumably correlate to NA08 -E, NA08 -NW, NA -08 SW, respectively. There is no depth correlation to the data in either Table 2.04.6 -2 or Appendix 2.04.6 -3 and it is unclear how these correlate to the data provided in Appendix Table 2.04:6 -2. It appears that the data presented in Table 2.04.6 -2 are average values calculated from composite samples but this is not described or footnoted. Our "Guidelines for the Collection of Baseline Water Quality and Overburden Geochemistry Data" has specific recommendations for sampling each individual stratum and recommended thickness intervals for composite samples. A revised Appendix Table 2.04.6 -2 now includes new overburden sample data. Item r e.voh, d in lll(�y -2011 r esj- )onse 7. The presentation of the analytical data for the overburden needs to be further clarified. Please ensure that all data presented in Table 2.04.6 -2 and Appendix Table 2.04.6 -2 is easily correlated with the laboratory analytical data presented in Appendix 2.04.6 -3. WFC submitted entirely new overburden sample data for the NHN permit area. The new data is acceptable and closely followed our guidelines for the collection of overburden geochemistry data. The laboratory analytical methods as presented in Appendix Table 2.04.6 -3 data sheets are also consistent with our guidelines. In PARNo. 2, the Division requested the following clarifications. On Appendix Table 2.04.6 -2 the summary table for the overburden data, WFC presents total results for Mercury, Mo, and Se. For mercury we understand that only a total digestion can be done, but for Mo and Se both total and soluble fractions were analyzed for all overburden samples. Please clarify why the total result was presented on Appendix Table 2.04.6 -2 instead of the soluble fraction as suggested by our guidelines for Se and Mo. Also the data shown on Table 2.04.6 -2 (page 10) do not match the information presented on Appendix Table 2.04.6 -2 for Hg, Mo, and Se. On Table 2.04.6 -2 the sample results are listed as soluble but they appear to be the total fraction. Please clarify these discrepancies and ensure that there is consistency between Table 2.04.6 -2 and Appendix Table 2.04.6 -2. At the top of the second page of Appendix Table 2.04.6 -2 the column for NHN 11-3 data is incorrectly labeled NHNI1 -1. Please correct this if appropriate. [teat resol =argue Dec-2011 response 8. Please provide the analytical laboratory reports for the data presented in Table 2.04.6 -2 for the five (5) overburden sample holes (1C, 3C, 695E, 697E and 775E) for which data are provided from New Horizon 1 Mine Area. This information should be provided in an Appendix to this permit application. The Division requested that the analytical laboratory reports for the data presented in Table 2.04.6 -2 for the five (5) overburden sample holes (1C, 3C, 695E, 697E and 775E) for which data are provided from New Horizon 1 Mine Area be included as an Appendix to the NHN permit application. These data were not provided in Appendix 2.04.6 -4 as indicated in WFC's response. If available, please include the laboratory reports as originally requested. Item r e.so p d in Dee -2011 r esImn