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DocuSign Envelope ID:07A4359F-6D47-4987-B1F1-BF667ACBB3BA <br /> EARTH MOVING -312000 <br /> 2. Under walks and pavements, use satisfactory soil material. <br /> 3. Under steps and ramps, use engineered fill. <br /> 4. Under footings and foundations, use engineered fill. <br /> C. Place soil fill on subgrades free of mud, frost, snow, or ice. <br /> 3.14 SOIL MOISTURE CONTROL <br /> A. Uniformly moisten or aerate subgrade and each subsequent fill or backfill soil layer before <br /> compaction to within 2 percent of optimum moisture content. <br /> 1. Do not place backfill or fill soil material on surfaces that are muddy, frozen, or contain <br /> frost or ice. <br /> 2. Remove and replace, or scarify and air dry, otherwise satisfactory soil material that <br /> exceeds optimum moisture content by 2 percent and is too wet to compact to specified <br /> dry unit weight. <br /> 3.15 COMPACTION OF SOIL BACKFILLS AND FILLS <br /> A. Place backfill and fill soil materials in layers not more than 8 inches (200 mm) in loose depth <br /> for material compacted by heavy compaction equipment and not more than 4 inches (100 <br /> mm) in loose depth for material compacted by hand-operated tampers. <br /> B. Place backfill and fill soil materials evenly on all sides of structures to required elevations and <br /> uniformly along the full length of each structure. <br /> C. Compact soil materials to not less than the following percentages of maximum dry unit weight <br /> according to ASTM D698: <br /> 1. Under structures and pavements, scarify and recompact top 12 inches (300 mm) of <br /> existing subgrade and each layer of backfill or fill soil material at 98 percent. Compact all <br /> other layers at 95 percent. <br /> 2. Under walkways, scarify and recompact top 6 inches (150 mm) below subgrade and <br /> compact each layer of backfill or fill soil material at 95 percent. <br /> 3. Under turf or unpaved areas, scarify and recompact top 6 inches (150 mm) below <br /> subgrade and compact each layer of backfill or fill soil material at 95 percent. <br /> 4. For utility trenches, compact each layer of backfill soil material at 95 percent. <br /> 3.16 GRADING <br /> A. General: Uniformly grade areas to a smooth surface, free of irregular surface changes. Comply <br /> with compaction requirements and grade to cross sections, lines, and elevations indicated. <br /> 1. Provide a smooth transition between adjacent existing grades and new grades. <br /> 2. Cut out soft spots, fill low spots, and trim high spots to comply with required surface <br /> tolerances. <br /> Orange County Solid Waste Drainage Repairs DAA 2200365/TRC 017055.0000.0000 <br /> Drainage Repair Project November 2023 <br /> Orange County, NC 312000-10/13 <br />