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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 />511 -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 0 <br />