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<br /> <br /> Forward Landfill WMU FU-23 02300 17 EARTHWORK <br />acceptance and control tests made on completed Work, on material samples <br />taken from the completed layer, and the thickness as calculated from the top <br />of subgrade and top of clay liner surveys. Acceptance testing for final <br />acceptance shall be performed by the soil testing laboratory in accordance <br />with these Specifications and the CQA Manual. <br /> <br /> G. Protection: <br /> <br /> 1. Do not route or allow construction traffic, except as necessary, on top of <br />clay liner once material has been placed and compacted. <br /> 2. Constructed clay liner shall be maintained to meet the requirements of this <br />Specification until final completion and acceptance of the Work. This shall <br />include all measures to prevent erosion. During seasonal or other extended <br />shutdowns, all exposed surfaces shall be protected as detailed in Article 3.1, <br />PROTECTION OF EXPOSED SURFACES, of this Section. In addition, <br />the clay liner shall be protected from any contamination that increases the <br />hydraulic conductivity. Any contaminated material shall be removed and <br />replaced at no cost to the OWNER. <br /> <br />3.9 CONSTRUCTION OF CLAY EARTHFILL <br /> <br /> A. General: <br /> <br /> 3. Clay Earthfill Material shall be processed to meet the requirements of <br />Article 2.4 of this Specification. The EARTHWORK CONTRACTOR <br />shall determine construction procedures to be used, subject to the approval <br />and acceptance testing by the QA/QC CONSULTANT. <br /> 4. The EARTHWORK CONTRACTOR shall process the Clay Earthfill <br />Material suitable for the purpose intended. After processing, the Clay <br />Earthfill Material shall be free from dry clods, roots, organic matter, frozen <br />material, debris, rocks or stones larger than 1 inch, and other deleterious <br />material. Clay Earthfill Material shall be thoroughly blended and <br />compacted to provide a homogeneous material relatively uniform in <br />gradation and moisture content. <br /> 5. The Clay Earthfill Material shall be as uniform as possible, free of <br />penetrating cracks, and having interlift boundaries completely blended. The <br />soil shall be compacted to produce a soil structure having low hydraulic <br />conductivity. <br /> <br /> <br /> B. Compaction: <br /> <br /> <br /> 1. Soil shall be spread evenly over the prepared subgrade with a thickness as <br />required to achieve a 6-inch compacted lift, with a maximum 8-inch loose <br />lift. <br /> 2. The minimum final thickness and extent of the Clay Earthfill shall be as <br />shown on the Construction Drawings.