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4 <br /> 10 . Page 30 , Second and Third Paragraphs <br /> The data to support these statements are very weak. The <br /> conclusions seem to be based on data which is from a low <br /> flow period. Information during spring and mid-summer are <br /> needed to provide a clearer basis for conclusions. <br /> 11 . Page 31, Second Paragraph <br /> A map showing the extent of the mine workings is needed. <br /> This should include all of the mines which may be connected <br /> to the Sunnyside via workings or fractures . <br /> 12 . Page 32 , First and Second Paragraphs <br /> What is the specific yield of the fractured rock mass? It <br /> would be helpful for the purpose of estimating mine fill-up <br /> to have some general estimate of the volume of the mine <br /> voids (range) . <br /> 13 . Page 33 , Second Paragraph <br /> Information on the water quality of water from the mentioned <br /> "valved" drill holes and on water flowing in that portion of <br /> the tunnel should be provided. This could provide relevant <br /> information on the nature of water quality changes within <br /> the apparently confined rock mass versus that for water <br /> moving into the tunnels oxygenated environment. <br /> 14 . Page 34 , Second Paragraph <br /> What is the discharge rate of the various tunnels during <br /> spring runoff? Information on the high flow range is needed <br /> to adequately evaluate any tunnel plugging proposal . <br /> 15 . Page 43 , Second Paragraph <br /> This section references data showing that most of the metal <br /> loading enters the American Tunnel down gradient of the <br /> SJCMY property line, near the fracture zone at the steel <br /> sets . An unaddressed question is: where does the water <br /> exiting from the "steel sets" fracture originate? Given the <br /> evidence that there are fractures carrying significant flows <br /> above the tunnel, the flow entering the tunnel at the "steel <br /> sets" could originate in the Sunnyside mine mineral zone and <br /> move laterally via fractures until it reaches the "steel <br /> set" fracture. Although the report implies that the "steel <br /> Set" fracture is vertical, it may, in fact dip sufficiently <br /> to originate within the Sunnyside mineralized zone. <br />