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9. The top surface of the final lift shall be bladed smooth and recompacted with a non-vibratory steel drum roller to produce a smooth top surface free from tire or roller marks, holes, and depressions more than 1/2 inch deep. The top surface shall conform to the lines and grades shown on the Construction Drawings. 10. At the end of each construction day's activities, completed lifts or sections of compacted clay liner shall be sealed by rolling with a rubber tired, or smooth drum,rollers and sprinkled with water as needed. 11. Upon completion of the clay liner, the GEOSYNTHETICS CONTRACTOR shall place geomembrane lining as specified in Section 02778, HIGH DENSITY POLYETHYLENE (HDPE) GEOMEMBRANE. The OWNER shall survey the termination edges of the HDPE Geomembrane at a minimum 75-foot interval. 12. Prepare the top surface of the clay liner for placement of the geomembrane liner by removing rock, debris, cracks, or other structural irregularities that could puncture or cause undue stress on the geomembrane liner. The top surface will be inspected and approved by the QA/QC CONSULTANT and the GEOSYNTHETICS CONTRACTOR prior to placement of the geomembrane lining. 13. All corners/edges of the finished clay liner shall be rounded in preparation for geomembrane lining installation. D. Moisture Control 1. During compacting operations, maintain water content in each lift of the Clay Liner Material within range of 3 to 5 percent greater than the optimum water content. 2. If Clay Liner Material is too dry, add water to material by sprinkling, then mixing or discing to make moisture content uniform throughout lift. 3. Do not attempt to compact Clay Liner Material that contains excessive moisture. Aerate material by blading, discing, harrowing, or other methods, to hasten drying process. E. Maintaining Clay Liner Condition: 1. Following completion of the clay liner, it shall be maintained in a moist condition by sprinkling with water or covering with plastic sheeting until the overlying components of the liner system are placed. The EARTHWORK CONTRACTOR shall be responsible for, and shall repair and replace at his own expense, any portion of the clay liner that has dried out or been damaged by unfavorable weather conditions or by his construction operations. 2. Cracks that form in the hydraulic barrier layer shall be repaired. Repair shall consist of mixing to the full depth of the crack, moisture conditioning, and recompacting to the same relative compaction as the surrounding clay liner at the EARTHWORK CONTRACTOR's sole expense. Forward Landfill WMU FU-14 02300 15 EARTHWORK