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<br /> Page 19 <br /> <br />• Verify that earthfill materials are placed and compacted in accordance with the <br />Specifications. If a sheepsfoot compactor is not used, verify that the top of each <br />compacted lift is scarified before placing the subsequent lift. <br /> <br />• Verify that general earthfill placed in anchor trenches and berms is appropriately <br />compacted. Hand held compaction equipment may be necessary to obtain adequate <br />compaction in certain locations. <br /> <br />• Perform nuclear density-moisture tests (ASTM D2922 and ASTM D3017) to verify that <br />each lift is compacted as required by the technical specifications. Perform tests at testing <br />frequencies specified in Section 3.2.2. <br /> <br />• Verify that soil materials that are too wet for proper compaction per Specifications are <br />properly aerated and processed to bring the moisture content of the material into the <br />acceptable range of the optimum moisture content. <br /> <br />• Verify that earthfill soils that are too dry for proper compaction per Specifications are <br />properly moisture conditioned and processed to bring the moisture content into the <br />acceptable range of the optimum moisture content. <br /> <br />• Verify that desiccated earthfills are properly repaired or removed before placing <br />subsequent lifts. <br /> <br />• Verify that final earthfill surfaces are free of ruts, gouges, and other features that might <br />contribute to erosion and sediment run-off. <br /> <br />• During earthfill operations field verify lines, grades, and dimensions using hand-held <br />levels and inclinometers, range poles and measuring tapes. <br /> <br />• Coordinate with the Earthwork Contractor and Owner to perform verification surveys at <br />the completion of earthfill operations. Verify corrective action measures as determined <br />by verification surveys. Verification surveys will also be used to determine the limits of <br />earthfills for measurement and payment applications. Submit copy of verification <br />surveys to the Construction Manager. <br /> <br />3.4.4 Clay Liner and Clay Earthfill <br /> <br />• Perform visual and manual soil classifications (ASTM D2488) to verify that material <br />source is suitable for clay liner and clay earthfill. Perform classifications continually <br />during excavation of borrow materials. <br /> <br />• Perform moisture-density relationship testing (ASTM D1557) to determine the <br />maximum dry density and optimum moisture content of clay materials. Perform tests at