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B. Earthwork shall conform to lines, grades, and minimum thicknesses and slopes indicated on the Construction Drawings and as specified in this section. C. Drainage i ag ditches shall be constructed and maintained to provide drainage during construction as directed by the OWNER. D. The EARTHWORK CONTRACTOR will be responsible for providing siltation control and management during construction, in general accordance with the site's approved Storm Water Pollution Prevention Plan. E. Care shall be taken during earthwork operations to avoid damaging synthetic components of the landfill including HDPE Pipe, Geotextile, Geomembrane, Geosynthetic Clay Liner, and Geocomposite Drainage Net. Damage caused by the EARTHWORK CONTRACTOR shall be repaired at the EARTHWORK CONTRACTOR's expense in accordance with the applicable Specification requirements. A. All borrow areas shall be kept neat and orderly. Work areas in a systematic manner. Keep borrow areas graded to drain and take all necessary precautions to minimize erosion. The EARTHWORK CONTRACTOR shall review the excavation plan with the QA/QC CONSULTANT prior to any excavation from borrow areas. Leave all surplus material in the borrow area. Maintain access roads as necessary at EARTHWORK CONTRACTOR's expense. Excavation at the borrow pits shall be limited to a depth of 25 -ft MSL and shall be excavated to permit the completed area to slope to drain to the surrounding area after completion of all Work. B. The EARTHWORK CONTRACTOR shall selectively stockpile the onsite fine grained material to use as Clay Liner Material. The EARTHWORK CONTRACTOR shall also selectively stockpile material appropriate for use as protective operations layer. C. Soils to be excavated are variable. Soil suitable for use as the Clay Liner material, Clay Plug, Clay Earthfill, or Protective Operations Layer may only be encountered in thin intermittent seams. D. The EARTHWORK CONTRACTOR shall make all reasonable efforts to determine the type of soil being excavated at all times. Equipment operators or the EARTHWORK CONTRACTOR's representative directing excavation shall have sufficient knowledge and understanding of soil classifications to determine general soil type. E. If vegetative material or topsoil is encountered in the borrow area, it shall be removed and stockpiled at an onsite location, as directed by the OWNER. Forward Landfill WMU FU -06 02300 10 EARTHWORK •