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• 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 /> 3.4.4 Clay Liner and Clay Plug <br /> • Perform visual and manual soil classifications (ASTM D2488) to verify that material <br /> source is suitable for clay liner and clay plug. Perform classifications continually during <br /> excavation of borrow materials. <br /> • Perform moisture-density relationship testing(ASTM D1557)to determine the maximum <br /> dry density and optimum moisture content of clay liner and clay plug materials. Perform <br /> tests at testing frequencies specified in Section 3.2.2. <br /> • Verify that clay liner and clay plug materials are placed and compacted in accordance <br /> with the Specifications. <br /> • Perform nuclear density-moisture tests(ASTM D2922 and ASTM D3017)to verify that <br /> each lift is compacted as required by the Specifications. Perform tests at testing <br /> frequencies specified in Section 3.2.2. <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 /> • Verify that clay liner and clay plug soils that are too dry for proper compaction per <br /> Specifications are properly moisture conditioned and processed to bring the moisture <br /> content into the acceptable range of the optimum moisture content. <br /> • Verify that acceptable moisture is maintained to reduce desiccation of the clay liner <br /> surface. <br /> • Verify that the clay liner surface is free of ruts, gouges, and other features that might <br /> damage overlying geosynthetics. <br /> • Coordinate with the Earthwork Contractor and Owner to perform verification surveys at <br /> the completion of clay liner operations. Verify corrective action measures as determined <br /> by verification surveys. Verification surveys will also be used to determine the limits of <br /> clay liner and clay lug for measurement and payment applications. Submit copy of <br /> verification surveys to the Construction Manager. <br /> Page 22 <br />