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PART 2 PRODUCTS <br /> 2.1 GENERAL <br /> A. Provide all labor, materials, and equipment necessary to accomplish the Work <br /> specified in this section. <br /> 2.2 GENERAL EARTHFILL <br /> A. General Earthfill material shall be used for the construction of termination berms, <br /> road berms, and backfill of anchor trenches and to bring subgrade to required <br /> grade where no other material is specified. The material shall be obtained from <br /> onsite excavations or stockpiles and shall be free from roots, organic matter, trash, <br /> debris, rocks or clods larger than 3 inches, and other deleterious materials. <br /> 2.3 SUBGRADE FILL <br /> A. Subgrade fill material shall be used at the locations shown on the Construction <br /> Drawings. The material shall be obtained from onsite excavations or stockpiled <br /> soil and shall be free from roots, organic matter, trash, debris, rocks or clods <br /> larger than 3 inches, and other deleterious materials. <br /> B. The top 3 inches of subgrade fill shall not contain particles greater than 1/2-inch <br /> or any materials that may protrude from the surface that could puncture the <br /> overlying geosynthetics. <br /> 2.4 CLAY LINER <br /> A. A natural clayey material free from roots, organic matter, frozen material, debris, <br /> solid waste, rocks, or slag larger than I inch, and other deleterious materials. The <br /> clay liner material shall be obtained from an onsite borrow source. <br /> B. The Clay Liner material shall have a soil classification of clayey sand (SC), lean <br /> clay, sandy clay, or silty clay (CL), or fat clay or sandy clay (CH), using the <br /> Unified Soil Classification System and shall meet the following requirements: <br /> 1. Particle Size: Material having 100 percent by weight passing 1-inch sieve, <br /> 90 percent by weight passing U.S. No. 4 sieve and at least 60 percent by <br /> weight passing U.S. No. 200 sieve. The maximum in-place dry clod size <br /> shall be 1 inch. <br /> 2. Liquid Limit: 20 minimum to 60 maximum. <br /> 3. Plasticity, Ibex: 10 to 40. <br /> 4. Field Hydraulic Conductivity: Maximum hydraulic conductivity of 1 x 10-7 <br /> cm/sec measured using a sealed double ring infiltrometer (SDRI). An SDRI <br /> for the clay liner material has been performed and the results are included in <br /> Exhibit A. <br /> FORWARD LANDFILL 02300 <br /> 5 EARTHWORK <br />