2011-11-19_REPORT - M1980244 (5)

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17. If tests indicate the Work does not meet the requirements of the SPECIFICATIONS, MANAGER and CERTIFYING ENGINEER will establish the extent of the nonconforming area. The nonconforming area shall be reworked by CONTRACTOR until acceptable test results are obtained at no additional cost to CC &V 18. Prior to any geosynthetics being placed on Soil Liner Fill, the area will be tested by CQA Monitor. No geosynthetics will be allowed to be placed on frozen material, as defined in Section 3.06, without the area in question being retested by the CQA Monitor. H. Drain Cover Fill 1. Drain Cover Fill shall be placed over the geomembrane in the locations shown on the DRAWINGS. Prior to placing the Drain Cover Fill, CONTRACTOR shall verify by visual inspection that the underlying geosynthetics are free of holes, tears, wrinkles, or foreign objects. MANAGER and CERTIFYING ENGINEER will inspect the geosynthetic for wrinkles prior to placement of Drain Cover Fill. As instructed by MANAGER, CONTRACTOR shall "work out" wrinkles to the satisfaction of MANAGER and CERTIFYING ENGINEER prior to placement of the Drain Cover Fill. In all cases, wrinkles shall not be of a size that they could fold back on themselves. Wrinkles greater than one foot shall be removed and repaired by the INSTALLER. CONTRACTOR shall place Drain Cover Fill in a single 24 -inch loose lift. The tracked equipment shall operate only over previously placed Drain Cover Fill. CONTRACTOR shall not operate equipment directly on geosynthetics. Only a dozer with a ground pressure not exceeding 8.7 psi can be used to place Drain Cover Fill. A CAT 12G motor grader, or equivalent approved by CERTIFYING ENGINEER, can be used for Drain Cover Fill final grading. Equipment used for placement will not be allowed to pivot on one track (i.e., no abrupt or sharp turns). There shall be no downhill placement on slopes steeper than 4H:1 V. Material can be placed along contours if buttressed from below. Motor graders shall not be allowed to make abrupt turns, brake suddenly, or dig blade in which results in the tires spinning on the Drain Cover Fill surface. 4. Highway compatible Rubber tired construction equipment shall not be allowed to travel over the geomembrane or on top of Solution Collection piping unless a thickness of at least 45 inches of Drain Cover Fill has been placed over the geomembrane and on top of Solution Collection piping. The CONTRACTOR will be required to demonstrate to the MANAGER, DESIGN ENGINEER and CERTIFYING ENGINEER that the equipment and procedures used are not detrimental to the geomembrane and piping, at no cost to CC &V. Off road haul truck traffic shall require a minimum of 60 inches for Cat 773 (or equivalent) of Drain Cover Fill placed over the geomembrane and solution collection piping, and a minimum of 120 inches for CAT 777 (or equivalent) of Drain Cover Fill placed over the geomembrane and solution collection piping. 5. When placing Drain Cover Fill the maximum acceptable drop height is 3 feet. 6. CONTRACTOR shall operate equipment in a manner that is protective of underlying geosynthetics. If MANAGER or CERTIFYING ENGINEER suspects the occurrence of any damage to the underlying geosynthetics, MANAGER will instruct CONTRACTOR to remove Drain Cover Fill to expose the geosynthetics. CONTRACTOR shall uncover, repair any observed damage of the underlying geosynthetics, in accordance with the repair Section 02200 Page 15 of 18 September 3, 2008 Earthworks Revision 1 PAPhase 5 OSA 2011 Cert Report\Appendices\Appendix E Specifications \02200.0.doc