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2.7 COARSE GRAVEL <br /> A. Clean, washed, well-rounded,hard, durable gravel free from dirt, clay clods,roots, <br /> and other foreign materials. Material shall conform to the following washed sieve <br /> gradation as determined by ASTM C117 and C136: <br /> Sieve Size Percent Passing by Weight <br /> 1" 100 <br /> 1/2" 0-85 <br /> No. 4 0-5 <br /> No. 200 0-2 <br /> B. The minimum hydraulic conductivity to water shall be 1.0 cm/sec. <br /> C. Coarse Gravel Material placed directly on geotextile and around HDPE pipe shall <br /> contain no angular particles. <br /> D. Coarse Gravel Material shall contain no limestone or other material that will <br /> adversely react with leachate. <br /> E. The Coarse Gravel shall be provided by the EARTHWORK CONTRACTOR <br /> 2.8 PROTECTIVE OPERATIONS LAYER • <br /> A. The material shall consist of generally sandy material excavated onsite. The <br /> material shall be obtained from the onsite borrow area. Protective operations <br /> layer placed directly above geosynthetics shall have no angular particles greater <br /> than 1 inch. <br /> 2.9 PLYWOOD SHEETING <br /> A. Plywood sheeting shall be exterior grade and provided at the dimensions shown <br /> on the Construction Drawings. <br /> 2.10 EQUIPMENT <br /> A. General: <br /> 1. Equipment used in constructing the Work shall be in good working order and <br /> shall be operated in strict accordance with manufacturer's instructions and <br /> recommendations. <br /> 2. Any soils contaminated by discharge of fluids from leaky or faulty equipment <br /> shall be removed and properly disposed and the contaminated area backfilled <br /> with clean soil, at no cost to the OWNER. <br /> B. Clay Processing Equipment <br /> Forward Landfill WMU FU-17 <br /> 02300 7 EARTHWORK <br />