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® apparatus will be provided with due consideration to the type of fill material, curing <br /> characteristics,rate of placement, and time of year. <br /> J. All materials incorporated as part of compacted fill must be inspected and placement <br /> must be observed by the Geotechnical CQA Consultant or their representative. <br /> K. Fill material shall be placed in thin lifts with a maximum uncompacted thickness of <br /> six to eight inches. Each layer shall be spread evenly and thoroughly mixed to obtain <br /> a near uniform condition in each layer. In areas of excess lift thickness, regrading of <br /> the surface to the maximum lift thickness will be completed prior to construction of <br /> additional lifts. <br /> L. The minimum compaction for all fill materials placed is specified as 90 percent of the <br /> maximum dry density as determined by ASTM D1557 and the specified moisture <br /> content is 2% above or below optimum moisture content as determined by ASTM <br /> D1557. <br /> M. The maximum hydraulic conductivity of the fill materials is specified as 1.0x10-6 <br /> cm/sec as determined by ASTM D5084 or modified USBR E 9600. <br /> N. The Contractor shall selectively excavate soils from pre-approved off-site or on-site <br /> borrow sources as identified by the Landfill Engineer and Geotechnical CQA <br /> ® Consultant(or his representative) during the grading operations. The cover soils shall <br /> contain sufficient fine-grained constituents such that gravel size and larger fragments <br /> do not cluster during construction. All import soils shall be free of potentially <br /> hazardous environmental pollutants. <br /> O. In the designated processing areas, cover soils shall be processed to obtain a uniform <br /> soil condition. <br /> P. Protective cover soils shall be moisture conditioned(or dried) as necessary to 2% <br /> above or below optimum moisture content as determined by ASTM D1557. <br /> Q. Neither material import nor cover production shall exceed the capability of the <br /> processing operation to meet the project specifications. <br /> R. Representative samples of fill materials will be tested in the laboratory in order to <br /> determine the physical characteristics of the material. During processing and/or <br /> grading operations, no soils or soil types other than those previously analyzed may be <br /> used,unless the Geotechnical CQA Consultant documents the suitability of these <br /> soils with appropriate additional testing paid for by the Contractor. <br /> S. Where tests indicate the moisture content, density, saturated hydraulic conductivity, <br /> and/or other required soils characteristics of any fill or portion thereof is below the <br /> • project requirements, the particular layer or portion shall be retested and if necessary <br /> -11- <br /> C"\2003-033\EDOMHILLCQAPLAN.DOC <br /> Geologic Associates <br />