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File No. 20-1008-49.1 KLEINFELDER <br /> December 8, 1992 <br /> • Compaction of lifts shall be performed with an appropriately heavy, properly <br /> ballasted, Wagner FWD sheepsfoot compactor (or equivalent, subject to <br /> approval by the Engineer). <br /> • The daily work area shall extend a distance no greater than permits the <br /> maintenance of moist-soil conditions and construction operations. Desiccation <br /> and crusting of the lift surface shall be avoided as much as possible. <br /> • If desiccation and crusting of the lift surface occurs, the desiccated zone shall <br /> be removed and the exposed surface shall be scarified and moisture conditioned <br /> before remediation filling and compaction or subsequent filling and compaction <br /> is permitted. <br /> • The measurement for thickness of soil liner shall take into account the <br /> sheepsfoot indentions of the upper lift. <br /> • If any area where heavy construction equipment cannot be used, a pure <br /> imported clay soil will be required. Compaction of soil along the edge of any <br /> construction appurtenances shall be achieved by hand application and hand <br /> compaction of the soil. At this time, there are no known construction <br /> appurtenances at the site. <br /> • The location and frequency of field and laboratory testing shall be as set forth <br /> in Section 7.2 or as modified by the CQA monitor. <br /> • The compacted soil liner shall have a permeability of 1x106 cm/sec or less. <br /> • During construction, finished lifts or sections of compacted test pad shall be <br /> sprinkled with water as required to prevent drying and desiccation prior to field <br /> testing. <br /> ANALYSIS AND REPORT <br /> Kleinfelder will evaluate the data from the construction and testing processes and develop <br /> minimum specifications for the construction of the barrier layer. The results of the test pad <br /> and specifications recommended by Kleinfelder will be in the form of a letter report to the <br /> Engineer. Modifications to the mix design or construction practices based on the test pad <br /> results will be included, if necessary. <br /> Copyright 1992 Kleinfelder, Inc Page 5 of 6 <br />