2010-08-17_REVISION - M1980244 (6)

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amec'e I meet the placement specifications, the material shall be removed and replaced with new Soil Liner Fill at the CONTRACTOR's expense. The CONTRACTOR shall reduce the clod size of the soil liner fill to a size that is acceptable to the CERTIFYING ENGINEER, the method by which will be approved by CERTIFYING ENGINEER and MANAGER prior to implementation. 5. The moisture content of the Soil Liner Fill shall be uniform throughout prior to and during ' compaction of the material. CONTRACTOR shall be responsible for meeting moisture content and compaction SPECIFICATIONS. If the Soil Liner Fill cannot be conditioned to meet the placement SPECIFICATIONS, the material shall be removed and replaced with ' new Soil Liner Fill at no additional cost to CC&V. MANAGER may require CONTRACTOR to moisture condition Soil Liner Fill at stockpile at least 24 hours prior to the Soil Liner Fill being placed. 6. CONTRACTOR shall place Soil Liner Fill to form a continuous monolithic material. If a lift of compacted Soil Liner Fill dries out during placement operations, CONTRACTOR shall scarify, moisture condition the dry soil and recompact the lift. If a lift of compacted Soil Liner Fill becomes overly wet due to precipitation or over watering, CONTRACTOR shall allow the wet soil to dry to the specified moisture content range before recompaction of fill and placement of geosynthetic materials. 7. CONTRACTOR shall assist CQA Monitor in obtaining soil samples for CQA testing. Soil Liner Fill sampling shall be scheduled by CQA Monitor with CONTRACTOR to facilitate CQA field testing. 8. CONTRACTOR shall maintain Soil Liner Fill stockpile areas in a free-draining condition. The CONTRACTOR will maintain Soil Liner Fill stockpiles and Soil Liner Fill placed within the limits of the valley leach facility to prevent the drying out of the surface. ' 9. CONTRACTOR shall compact corners and other areas inaccessible to driven compaction equipment using hand-operated 500-pound vibratory plate or vibratory smooth-drum I compaction equipment approved by MANAGER and CERTIFYING ENGINEER. 10. CONTRACTOR shall trim the surface of the Soil Liner Fill to the design grades shown on the DRAWINGS. 11. CONTRACTOR shall roll the surface of the Soil Liner Fill with a smooth drum roller to remove ridges and surface irregularities greater than 0.5 inches in height. CERTIFYING ENGINEER shall determine if surface preparation is sufficient to place geomembrane. On areas with slopes steeper than 3H:1V, CONTRACTOR shall adopt methods as necessary to obtain the same final surface preparations that would be obtained by the passage of a smooth-drum roller on flat or level ground. Pushing of compaction equipment by tracked equipment shall not be performed. Wheel ruts on the surface of the Soil Liner Fill from grading equipment shall be repaired by CONTRACTOR prior to placement of the geomembrane by rolling the surface as approved by CQA Monitor. 12. CONTRACTOR will remove angular protruding rocks greater than 3/4 inches in diameter from the compacted Soil Liner Fill surface. Indentations left in the Soil Liner Fill Surface after removal of the rocks shall be filled with Soil Liner Fill or other suitable fill approved by CQA Monitor, and compacted to achieve final grade. Areas of the Soil Liner Fill surface with concentrated gravelly areas will have suitable fill approved by CQA Monitor placed on Section 02200 Earthworks Page 13 of 18 September 3, 2008 Revision 1 S:\Projects\1125E CCV (:QA\I - Tech Specs\02200.rt.doc