Laserfiche WebLink
Mr. Allen Sorenson - DRMS <br />June 22, 2010 <br />Page 2 <br />are deemed unsatisfactory will be removed and replaced. Pressure testing as well as hydrostatic tests to <br />150% operating pressure will then be carried out. <br />Embedment material will be carefully placed and compacted to a minimum of 95% Standard Proctor <br />Density so as not to disturb the pipe from its line and grade while ensuring that it is in firm contact with the <br />entire bottom surface of the pipe. The primary backfill layer will be compacted in even lifts of no more <br />than 8-inches. The final backfill layer will be free of large stones or other dense hard objects that could <br />damage the pipe when dropped into the trench. The final backfill will be well compacted on any slopes. <br />The new pipeline will then be connected to the existing pipeline. Flanges and butterfly valves will be <br />installed at each end of the new pipe. All gaskets will be inspected before installation and care will be <br />taken to assure proper seating and centering of the gasket. Flange bolts will be numbered and installed <br />in a cross-bolting pattern using a torque wrench. <br />Please contact me at (303) 569-3221, ext. 1233 or Bryce Romig (ext. 1204) if you require additional <br />information or if you have any questions or concerns <br />Sincerely, <br />714?j 411 _VV'OL.? <br />Miguel Hamarat <br />Chief Environmental Engineer <br />Climax Molybdenum Company <br />Henderson Operations <br />Enclosures: <br />1. Plan and Profile Design Drawings <br />CC: B. Romig, Climax <br />T. Haynes, Climax