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2 <br /> Summitville. If the amount of pyrite in the host volcanics <br /> is considered germane to the argument that plugging of the <br /> Sunnyside Mine is the best mechanism for closure of the <br /> mine, then information on the actual range of pyrite in the <br /> ore zone and the host country rock should be provided. <br /> 2 . Page 12 , Third Paragraph <br /> This section provides information on the intergranular <br /> permeability of volcanic flows, based on a general <br /> reference. There is no actual site specific information on <br /> how the host rock at Sunnyside actually compares to the <br /> general estimate. Permeability tests on unfractured host <br /> rock might provide useful information. <br /> 3 . Pages 12 , 13 , 14 , and 15 <br /> This section discusses the importance of fracture flow in <br /> the vicinity of the Sunnyside Mine, especially at depth. <br /> The report provided anecdotal information on drilling out of <br /> the American tunnel which does demonstrate that some of the <br /> veins have significant permeability. The report does not, <br /> however, provide the necessary level of detail on the known <br /> fracture systems and their present relationship to the mine <br /> workings. In my opinion, a detailed analysis of the <br /> fracture systems and the mine working (which would include <br /> all of the potentially affected mines, such as the Mogul) is <br /> needed to evaluate the feasibility of plugging the Sunnyside <br /> and associated ground water monitoring that would be needed <br /> if plugging was approved. There is a large body of <br /> published and perhaps unpublished information on the <br /> fracture systems and mine workings in this area. This <br /> information should be reviewed and summarized as part of the <br /> process for demonstrating the viability of mine plugging. <br /> 4 . Page 17, Last Paragraph <br /> The usefulness of the estimates of the storage coefficient <br /> which are provided is unclear. What is the planned use of <br /> the estimates? Estimates of specific storage of the mine <br /> workings and the fractures in the mine vicinity would be <br /> more useful . <br /> 5 . Page 18 , Last Paragraph <br /> This paragraph is unclear. Is there factual information to <br /> support the statement such as a sulfide/oxide ore contact? <br />