2011-11-19_REPORT - M1980244 (5)

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ameO 4. Provisions shall be made by CONTRACTOR for removal of oversize materials from fills, at no additional cost to CC &V. The MANAGER will minimize the amount of traffic over the Underdrain Fill. E. Leak Detection Fill Leak Detection Fill shall be placed in the Leak Detection Trenches as shown on the DRAWINGS. 2. CONTRACTOR shall condition Leak Detection Fill to allow a surface that does not cause rutting or other deleterious effects. F. Low Volume Solution Collection Fill Low Volume Solution Collection Fill shall be placed over the geomembrane in the locations shown on the DRAWINGS. 2. CONTRACTOR shall condition Low Volume Solution Collection Fill to allow a surface that does not cause rutting or other deleterious effects. CONTRACTOR shall place Low Volume Solution Collection Fill around the Low Volume Solution Collection Vertical Riser Pipes in maximum 12 -inch loose lifts and compact using a hand operated vibratory plate compactor to the satisfaction of the MANAGER and CERTIFYING ENGINEER. Low Volume Solution Collection Fill shall be worked under the Low Volume Solution Collection Rise pipe haunches by hand to provide uniform support of the pipe. 4. Prior to placing the Low Volume Solution Collection 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 Low Volume Solution Collection Fill. As instructed by MANAGER, CONTRACTOR shall "work out" wrinkles to the satisfaction of MANAGER and CERTIFYING ENGINEER prior to placement of the Low Volume Solution Collection 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 Low Volume Solution Collection Fill in a single 36 -inch loose lift. The tracked equipment shall operate only over previously placed Low Volume Solution Collection Fill. CONTRACTOR shall not operate equipment directly on geosynthetics. Only a dozer with a ground pressure not exceeding 14.7 psi can be used to place Low Volume Solution Collection Fill. 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. 6. 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 Low Volume Solution Collection 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 Section 02200 Page 11 of 18 September 3, 2008 Earthworks Revision 1 PAPhase 5 OSA 2011 Cert Report\Appendices\Appendix E Specifications \02200.r1.doc