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<br /> <br /> Forward Compost Facility Stormwater Improvements 02300 14 EARTHWORK <br />excavations to prevent cave-ins or bank slides. <br /> <br /> D. Backfill anchor trench when directed by GEOSYNTHETICS CONTRACTOR. <br />Anchor trench shall be backfilled with general earthfill as shown on the <br />Construction Drawings or directed by the DESIGN ENGINEER or QA/QC <br />CONSULTANT. General earthfill used as anchor trench backfill shall be <br />compacted to 90 percent relative compaction and within 3 percent of optimum per <br />ASTM D1557. <br /> <br />3.13 BERMS <br /> <br /> A. Construct berms of general earthfill as shown on the Construction Drawings. <br />Place material in lifts not exceeding 1-foot depth (after compaction) and compact <br />each lift to approximately 90 percent relative compaction (ASTM D1557). <br /> <br /> B. The EARTHWORK CONTRACTOR shall repair or replace any geosynthetic <br />materials damaged during placement and compaction of the berms, at the <br />EARTHWORK CONTRACTOR's sole expense. <br /> <br /> C. During all compacting operations, maintain optimum practicable moisture content <br />required for compaction purposes in each lift of fill. Maintain uniform moisture <br />content throughout the lift. Insofar as practicable, add water to the material at the <br />site of excavation. Supplement, if required, by sprinkling the general earthfill. At <br />the time of compaction, the water content of the material shall be at the optimum <br />moisture content, ±3 percentage points per ASTM D1557. <br /> <br /> D. Do not attempt to compact general earthfill material that contains excessive <br />moisture. Aerate material by blading, discing, harrowing, or other methods, to <br />hasten the drying process. <br /> <br /> <br />3.14 DITCHES AND TRENCHES <br /> <br /> A. Place general earthfill, as necessary, and excavate ditches and trenches to achieve <br />grade and dimensions shown on the Construction Drawings. Place material in <br />lifts not exceeding 1-foot depth (after compaction) and compact each lift to <br />approximately 90 percent relative compaction (ASTM D1557) within 3 percent of <br />optimum moisture content. <br /> <br /> B. Excavate, as necessary, to repair any existing drainage structure damaged during <br />construction. <br /> <br />C. Minimum width of trenches shall be 12-inches greater than outside diameter or <br />width of pipe. Maximum trench width is unlimited, unless otherwise shown or <br />specified, or unless width will cause damage to existing facilities, adjacent <br />property, or completed work. <br /> <br />D. Pipe bedding grooves shall be semi circular, trapezoidal, or 90 degree V. The <br />grooves shall be excavated or plowed into the trench bottom. Forming groove by