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density. Prior to placement of subsequent lifts the previous lift shall be scarified to a depth of <br />2 inches to provide fox proper bonding between lifts. Scarifying may be accomplished by <br />disking, raking or other satisfactory method. <br />Soil liner fill shall be placed and compacted to achieve a coefficient of permeability of less <br />than 1 x 70 ~ cm/sec. <br />The liner fill shall be compacted to at least 95 percent of maximum dry density as determined <br />by the Standard Proctor density test (ASTM D 698) at a moisture content between 1 percent <br />below and 3 percent over the optimum moisture content. <br />If the fill operation has been interrupted fox any reason, before the operation may continue <br />any unsuitable material such as being overly wet, crusted, heaved, cracked or other similar <br />conditions shall be removed or reworked to provide a proper fill material. <br />CONSTRUCTION QUALITY ASSURANC7; PROGRAM <br />The construction quality assurance plan (CQAP) shall be done as follows: <br />A firm ox person shall be responsible for performing the quality assurance tasks and the tasks <br />axe as follows. <br />7. Review the drawings, specifications and related documents. <br />2. Observe the excavation and backfilling operations. <br />3. Obtain preconstxuction and construction samples and perform material evaluation testing <br />as required on the samples. <br />4. Monitor and document material placement, including soil type, clod and particle size, loose <br />lift thickness, moisture conditioning, compaction equipment and methods, number of <br />passes, unifoxmiry of compaction coverage, compacted lift thickness, bonding of lifts and <br />in place moisture content and the dry density as requited by the specifications. <br />5. Assure that the testing equipment used and the tests performed are conducted according <br />to the specifications and industry standards. <br />6. Document and report all test results. <br />7. Report any deficiencies in the construction and report the resolution. <br />8. Prepare a construction certification report describing the construction, any deviations <br />from the specifications or drawings and the detail of the resolution, Field and laboratory <br />test data and results and will include professional certification that the construction was <br />completed in accordance with the plan and specifications. <br />