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2011-11-19_REPORT - M1980244 (5)
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2011-11-19_REPORT - M1980244 (5)
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Last modified
8/24/2016 4:45:10 PM
Creation date
2/26/2014 3:31:35 PM
Metadata
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
Report
Doc Date
11/19/2011
Doc Name
FINAL REPORT, VOLUME 3 OF 3 2011 phase 5 valley leach facility ore storage 1 OF 2
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CC&V
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DRMS
Media Type
D
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No
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" 4m 1 <br />areas with slopes steeper than 3H:1 V, CONTRACTOR shall adopt methods as necessary to <br />obtain the same final surface preparations that would be obtained by the passage of a <br />smooth -drum roller on flat or level ground. Pushing of compaction equipment by tracked <br />equipment shall not be performed. Wheel ruts on the surface of the Soil Liner Fill from <br />grading equipment shall be repaired by CONTRACTOR prior to placement of the <br />geomembrane by rolling the surface as approved by CQA Monitor. <br />12. CONTRACTOR will remove angular protruding rocks greater than 3/4 inches in diameter <br />from the compacted Soil Liner Fill surface. Indentations left in the Soil Liner Fill Surface <br />after removal of the rocks shall be filled with Soil Liner Fill or other suitable fill approved <br />by CQA Monitor, and compacted to achieve final grade. Areas of the Soil Liner Fill surface <br />with concentrated gravelly areas will have suitable fill approved by CQA Monitor placed on <br />top and compacted to achieve final grade. A maximum thickness of 0.5 inches of suitable <br />fill will be placed on the Soil Liner Fill. <br />13. MANAGER and CERTIFYING ENGINEER will identify any areas of significant <br />desiccation, crusting, or erosion of a lift surface. Soil Liner Fill surfaces found to have <br />desiccation cracks greater than 0.25- inches in width or depth, or which exhibit swelling, <br />heaving or other similar conditions shall be replaced or reworked by CONTRACTOR to <br />remove such defects. Desiccation cracks on the Soil Liner Fill surface less than 0.25- inches <br />in width or depth shall be compacted with a smooth drum roller. CONTRACTOR shall <br />take whatever steps necessary to prepare Soil Liner Fill surface to the satisfaction of <br />MANAGER and CERTIFYING ENGINEER, at no additional cost to CC &V. <br />14. CONTRACTOR shall maintain the Soil Liner Fill surface in a condition suitable for <br />geomembrane installation as specified in these SPECIFICATIONS and in the CQA Plan <br />until the surface is covered. CONTRACTOR shall repair all weather related damage to <br />Soil Liner Fill surfaces or other portions of the Work that have or have not been covered by <br />geomembrane, at no additional cost to CC &V. <br />If any moisture is allowed to collect under the geomembrane prior to or after final seaming <br />and softens the Soil Liner Fill, the geomembrane shall be removed and CONTRACTOR <br />shall recondition and recompact the Soil Liner Fill to meet all placement and trimming <br />SPECIFICATIONS, at no additional cost to CC &V. <br />15. CONTRACTOR shall remove all hubs and survey stakes in the Soil Liner Fill and backfill <br />all holes with MANAGER and CERTIFYING ENGINEER approved moisture - <br />conditioned Soil Liner Fill or bentonite. Compact with a Proctor hammer or other suitable <br />device that will achieve a kneading type of compaction and will achieve the required density. <br />16. CONTRACTOR shall verify the final thickness of Soil Liner Fill to determine compliance <br />with this SPECIFICATION. Thickness verification shall be performed at a minimum <br />frequency of two measurements per acre using a soil -coring device, unless directed <br />otherwise by MANAGER. CONTRACTOR shall record as part of the as -built <br />documentation the location, elevation, and thickness of each Soil Liner Fill verification test. <br />CQA Monitor will witness all verification measurements. CONTRACTOR shall backfill <br />all holes with MANAGER and CERTIFYING ENGINEER approved moisture - <br />conditioned Soil Liner Fill compacted with a Proctor hammer or other suitable device that <br />will achieve a kneading type of compaction and will achieve the required density, or <br />bentonite. Areas with deficiencies shall be reworked by CONTRACTOR, until acceptable <br />measurements are obtained at no additional cost to CC &V. <br />Section 02200 Page 14 of 18 September 3, 2008 <br />Earthworks Revision 1 <br />PAPhase 5 OSA 2011 Cert Report\Appendices\Appendix E Specifications \02200.r1.doc <br />
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