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Newmont-Cripple Creek&Victor Gold Mine <br /> Technical Specification No.02200.DOCX <br /> Squaw Gulch VLF <br /> Project No.475.0106.006 <br /> June 1S,2016 <br /> 3. CONTRACTOR shall place Drain Cover Fill in a single 24-inch loose lift. The tracked <br /> equipment shall operate only over previously placed Drain Cover Fill. CONTRACTOR <br /> shall not operate equipment directly on geosynthetics. Only a dozer with a ground <br /> pressure not exceeding 8.7 psi can be used to place Drain Cover Fill. A CAT 12G <br /> motor grader, or equivalent approved by CERTIFYING ENGINEER, can be used for <br /> Drain Cover Fill final grading. Equipment used for placement will not be allowed to <br /> pivot on one track (i.e. no abrupt or sharp turns). There shall be no downhill <br /> placement on slopes steeper than 4H:1V. Material can be placed along contours if <br /> buttressed from below. Motor graders shall not be allowed to make abrupt turns, <br /> brake suddenly, or dig blade in which results in the tires spinning on the Drain <br /> Cover Fill surface. <br /> 4. Highway compatible Rubber tired construction equipment shall not be allowed to <br /> travel over the geomembrane or on top of Solution Collection piping unless a <br /> thickness of at least 45 inches of Drain Cover Fill has been placed over the <br /> geomembrane and on top of Solution Collection piping. The CONTRACTOR will be <br /> required to demonstrate to the MANAGER, DESIGN ENGINEER and CERTIFYING <br /> ENGINEER that the equipment and procedures used are not detrimental to the <br /> geomembrane and piping, at no cost to CC&V. Off road haul truck traffic shall <br /> require a minimum of 60 inches for Cat 773 (or equivalent) of Drain Cover Fill <br /> placed over the geomembrane and solution collection piping, and a minimum of <br /> 120 inches for CAT 777 (or equivalent) of Drain Cover Fill placed over the <br /> geomembrane and solution collection piping. <br /> 5. When placing Drain Cover Fill the maximum acceptable drop height is 3 feet. <br /> 6. CONTRACTOR shall operate equipment in a manner that is protective of underlying <br /> geosynthetics. If MANAGER or CERTIFYING ENGINEER suspects the occurrence of <br /> any damage to the underlying geosynthetics, MANAGER will instruct CONTRACTOR <br /> to remove Drain Cover Fill to expose the geosynthetics. CONTRACTOR shall <br /> uncover, repair any observed damage of the underlying geosynthetics, in <br /> accordance with the repair requirements of Sections 02776.0 and 02777.0 of these <br /> SPECIFICATIONS, and recover, at no cost to CC&V. <br /> 7. CONTRACTOR shall place Drain Cover Fill at a rate such that the geomembrane liner <br /> is not exposed to ultraviolet light for more than 180 days. <br /> 8. CONTRACTOR shall provide close continuous monitoring at the point of placement <br /> during the placement of the Drain Cover Fill over geosynthetics. <br /> 9. CONTRACTOR shall verify the final thickness of Drain Cover Fill to determine <br /> compliance with this SPECIFICATION. CONTRACTOR shall record verification <br /> location, elevation, and thickness. CQA Monitor shall witness all verification <br /> measurements. CONTRACTOR will submit a method of verifying Drain Cover Fill <br /> depth to MANAGER for approval. Grade markers shall be placed on a 50-by-50-foot <br /> grid with additional points required for breaks in grade. CONTRACTOR shall remove <br /> Page 18 <br />