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for corrosive damage to the proposed buried pipeline, in this area and others where wet or saturated <br />conditions may be encountered by the buried pipe. <br />a. DRMS concurs that elevating the pipe above the expected saturated zone and increasing the <br />polyurethane coating to 35 mils is a good approach to minimizing the potential for pipe corrosion in the <br />indicated area. Please note comment 6a below with respect to the polyurethane coating specification. <br />Response: Comment noted. <br />Comment 3. A haul road is proposed over Station -184+00 (ref. Drawing 540-L-PN-007). Over 40 feet <br />of cover will exist due to haul road. Assuming a leak could and would be detected in this area, how would <br />the pipe be accessed for maintenance? <br />y-a The-C-MC-Yesponse does not address-the-accessibility issue unless the-multiplate tunnel (or implied <br />alternative) under investigation is incorporated into the design. Please inform DRMS of the results of the <br />current accessibility alternatives investigation. <br />Response: Climax is continuing to evaluate options for pipe access in this area including, but not limited <br />to, rerouting the proposed haul road and constructing a tunnel. Climax will provide DRMS with its final <br />design once a decision is made. For purposes of this TR approval, assuming the pipe will be buried <br />beneath the proposed haul road as indicated, should a leak occur in this area Climax would shut down <br />the flow of water and excavate down to the pipeline to make the needed repair. It should be noted <br />that any leak in this area also would be contained within Climax's process water treatment system (see <br />response to Comment 1). <br />Comment 4. Drawing 540-L-PN-001: The profile references "Trench Detail l" and "Trench Detail 2" on <br />Drawing 540-L-PN-009. The Division has not received Drawing 540-L-PN-009, or any other details <br />associated with the pipeline. <br />a. DRMS received the requested drawings. Please note comment 6a below with respect to the <br />polyurethane coating specification. <br />Response: Comment noted. <br />Comment S. The Division received Drawings 545-C-CV--005 and 006 for the-Fenmile Tunnel, South- <br />Portal Exit Channel. There is no discussion of this in the TR-17 Robinson Lake Process Water Reclaim <br />Pipeline narrative. Is the South Portal Exit Channel related to the pipeline? Is this part of TR-17? Please <br />provide some background. <br />a. DRMS received the requested background. <br />Response: Comment noted. <br />Comment 6. Please provide pipe and joint specifications for the carbon steel and HDPE pipe. <br />a. DRMS received the requested specifications for carbon steel pipe and joints. Thank you for clarifying <br />that no HDPE pipe will be used in the primary transfer pipeline, but only in sump pipes. DRMS <br />understands the specifications are preliminary. However, we would like to note that paragraphs 2.1.8 <br />2 <br />