2013-10-01_REVISION - M1980244 - Laserfiche WebLink

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TECHNICAL SPECIFICATIONS 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 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:1 V, 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 top and compacted to achieve final grade. A maximum thickness of 0.5 inches of suitable fill will be placed on the Soil Liner Fill. 13. MANAGER and CERTIFYING ENGINEER will identify any areas of significant desiccation, crusting, or erosion of a lift surface. Soil Liner Fill surfaces found to have desiccation cracks greater than 0.25- inches in width or depth, or which exhibit swelling, heaving or other similar conditions shall be replaced or reworked by CONTRACTOR to remove such defects. Desiccation cracks on the Soil Liner Fill surface less than 0.25- inches in width or depth shall be compacted with a smooth drum roller. CONTRACTOR shall take whatever steps necessary to prepare Soil Liner Fill surface to the satisfaction of MANAGER and CERTIFYING ENGINEER, at no additional cost to CC &V. 14. CONTRACTOR shall maintain the Soil Liner Fill surface in a condition suitable for Reomembrane installation as specified in these SPECIFICATIONS and in the CQA Plan until the surface is covered. CONTRACTOR shall repair all weather related damage to Soil Liner Fill surfaces or other portions of the Work that have or have not been covered by geomembrane, at no additional cost to CC &V. 15. If any moisture is allowed to collect under the geomembrane prior to or after final seaming and softens the Soil Liner Fill, the geomembrane shall be removed and CONTRACTOR shall recondition and recompact the Soil Liner Fill to meet all placement and trimming SPECIFICATIONS, at no additional cost to CC &V. 16. CONTRACTOR shall remove all hubs and survey stakes in the Soil Liner Fill and backfill all holes with MANAGER and CERTIFYING ENGINEER approved moisture - conditioned Soil Liner Fill or bentonite. Compact with a Proctor hammer or other suitable device that will achieve a kneading _type of compaction and will achieve the required density. Earthworks September 24, 2013 02200.0.1 -8 Revision 1 S \Projects \1550 - CC &V Field Spt CQA PSES Bldg \8 0 Project Engineering and Design \8 2 Specificatwns\PSES Pipe Rack Liner Extension SpeaficahonsUnd—dual Specification Sections \02200 0 RI Earthworks docx