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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 depth <br />to MANAGER for approval. Grade markers shall be placed on a 50 -by -50 -foot grid with <br />additional points required for breaks in grade. CONTRACTOR shall remove all grade <br />markers under supervision of CQA Monitor after verification measurements have been <br />approved by MANAGER and CERTIFYING ENGINEER and will backfill holes with <br />Drain Cover Fill. Areas with deficient thickness shall be reworked by CONTRACTOR, <br />until acceptable measurements are obtained. If MANAGER or CERTIFYING <br />ENGINEER suspects the occurrence of any damage to the underlying geosynthetics, <br />MANAGER will instruct CONTRACTOR to remove Drain Cover Fill to expose the <br />geosynthetics. CONTRACTOR shall uncover, repair any observed damage of the <br />underlying geosynthetics, in accordance with the repair requirements of Sections 02776.0 <br />and 02777.0 of these SPECIFICATIONS and recover, at no cost to CC &V. <br />10. CONTRACTOR will provide adequate illumination as approved by MANAGER, if Drain <br />Cover Fill placement is carried out at night. A minimum of 2 -foot candles measured at the <br />synthetic liner shall be used when Drain Cover Fill placement is carried out at night. <br />I. Pipe Bedding Material <br />1. Pipe Bedding material shall be placed around the CSP as shown on the drawings. <br />2. For piping external to the valley leach facility, CONTRACTOR shall compact the Pipe <br />Bedding Material requiring compaction to at least 95 percent of the maximum dry density as <br />determined by the Standard Proctor density test (ASTM D698), and a moisture content <br />3 percent below and 3 percent over the optimum moisture content. <br />3. CONTRACTOR shall place Pipe Bedding Material in maximum 12 -inch loose lifts. Pipe <br />Bedding Material will be worked under pipe haunches by hand to provide uniform support <br />of the CSP. <br />4. Native material used for backfilling CSP excavation shall be placed in 12 -inch to 18 -inch <br />loose lifts, and compacted by wheel rolling with light, rubber tired or other light compaction <br />equipment, as approved by CERTIFYING ENGINEER. <br />Granular Filter Material <br />Granular Filter Material shall be placed beneath the Riprap as shown on the drawings. <br />K. Bedding Fill <br />Bedding Fill shall be placed within the limits of the valley leach facility as shown on the <br />DRAWINGS. <br />2. CONTRACTOR shall place and compact the Bedding Fill in loose lifts such that the <br />compacted lift thickness is a minimum of 12- inches. CONTRACTOR shall condition the <br />Bedding Fill to allow a surface that does not cause rutting or other deleterious effects. The <br />moisture content and density shall be uniform throughout the lift. If a lift of compacted <br />40 Bedding Fill dries out during placement operations, CONTRACTOR shall scarify, <br />moisture condition the dry soil and recompact the lift. If a lift of compacted Bedding Fill <br />Section 02200 Page 16 of 18 _.. September 3, 2008 <br />Earthworks Revision 1 <br />S.Trojects \1125E CCV CQA \I - Tech Specs \02200.0.doc <br />