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4.3.4 Trenching and Roadways <br /> As described in the construction specifications, the CQA Monitor will: <br /> a Verify depth and other dimensions <br /> ® Verify slope requirements <br /> • Determine whether construction activities are adversely impacting final cover components <br /> ® Verify geocomposite placement, if applicable <br /> ® Verify that backfill is being placed in accordance with the construction specifications <br /> ® Check proper backfill compaction and riprap placement if applicable <br /> ® Check moisture and density of compacted backfill by testing at the frequencies established <br /> in this plan <br /> ® Perform sampling and construction testing on trench backfill materials at the frequencies <br /> established in this plan <br /> ® Verify that completed grades are consistent with the construction drawings by reviewing <br /> as-built surveys with the Resident engineer <br /> 4.3.5 Vegetative Soil Layer <br /> As described in the "vegetative soil layer" Sections 02200 of the construction specifications, the CQA <br /> Monitor will: <br /> ® Verify that the source material for topsoil is capable of supporting native plant growth and <br /> meets the contract drawing requirements <br /> ® Monitor placement of material, and mark damage to the project components during <br /> material installation, and verify that damage is repaired <br /> ® Verify that the underlying geomembrane cover is installed correctly prior to placement <br /> ® Verify that layer thickness control is established <br /> ® Verify lift thickness <br /> ® Test compaction and moisture content at required frequencies <br /> ® Sample and perform classification testing at required frequencies <br /> ' • Verify that final grading meets slope requirements <br /> 4.4 Riprap <br /> CQA requirements for riprap and other runoff control features are specified in the construction <br /> specifications and discussed in this section. <br /> CH CQA Plan 041712 Rev2a.doc 4-5 <br />