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3 Construction Quality Assurance For Earthwork <br /> 3.1 Introduction <br /> This section describes CQA procedures for earthwork operations. The scope of earthwork and <br /> related construction quality assurance includes the following elements: <br /> Stockpiling and Soil Management <br /> Excavation <br /> General Earthfill and Subgrade Fill <br /> Clay Liner, Clay Plug, and Clay Earthfill <br /> Subgrade Preparation <br /> Granular Drainage Material <br /> Coarse Gravel <br /> Protective Operations Layer <br /> 3.2 Earthwork Construction Testing <br /> 3.2.1 Test Standards <br /> The following test standards apply as called out in this manual or the technical specifications: <br /> Standard Test Description <br /> ASTM C-136 Standard Method for Partial-Size Analysis of Fine and Coarse <br /> Aggregates. <br /> ASTM D-698 Moisture-density relations of soils and soil-aggregate mixtures,using <br /> 50-pound rammer and 12-inch-drop (standard Proctor) <br /> ASTM D-1556 Density of soil in-place by the sand-cone method <br /> ASTM D-1557 Moisture-density relations of soils and soil-aggregate mixtures, using <br /> 10-pound rammer and 18-inch-drop (modified Proctor) <br /> ASTM D-422 Particle size analysis of soils <br /> ASTM D-2922 Density of soil and soil-aggregate in-place by nuclear methods <br /> ASTM D-3017 Moisture content of soil and soil-aggregate-in-place by nuclear <br /> methods <br /> Page 12 <br />