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<br /> <br /> Forward Landfill WMU FU-23 02300 12 EARTHWORK <br />3.5 LIMITS OF EXCAVATION <br />A. Excavate to the depths and widths, as shown on the Construction Drawings. <br />Allow for minimum thickness of clay liner as required. Excavation carried below <br />the grade lines shown or established by the DESIGN ENGINEER shall be <br />replaced with the same fill material as specified for the overlying fill or backfill <br />and compacted as required for such overlying fill or backfill. Where the <br />overlying area is not to receive fill or backfill, replace the overexcavated material <br />and compact to a density not less than that of the underlying ground. Cuts below <br />grade shall be corrected by similarly cutting adjoining areas and creating a smooth <br />transition. Correct all overexcavated areas at the EARTHWORK <br />CONTRACTOR's sole expense. <br /> <br />3.6 STOCKPILE ACTIVITIES <br /> <br /> A. Stockpile all excavated material. Uniformly grade stockpile area to conform to <br />existing contours, leave with a neat appearance, and maintain current drainage <br />patterns. The stockpile shall have a slope no greater than two horizontal to one <br />vertical and the top surface shall have a minimum 5 percent grade. <br /> <br /> B. Selective Stockpiling: <br /> <br /> 1. The CONTRACTOR shall make all reasonable efforts to separately <br />stockpile fine grained materials suitable for use as the Clay Liner and Clay <br />Earthfill. Material suitable for use as protective operations layer shall be <br />placed in separate stockpile. <br /> 2. The QA/QC CONSULTANT may sample and analyze all stockpiles created <br />by the EARTHWORK CONTRACTOR. <br />3. If, in the opinion of the QA/QC CONSULTANT, the EARTHWORK <br />CONTRACTOR is not adequately separating excavated soil in accordance <br />with these Specifications, the QA/QC CONSULTANT may direct the <br />EARTHWORK CONTRACTOR to modify his stockpiling operation or <br />may order the EARTHWORK CONTRACTOR to halt excavation and <br />stockpiling activities until adequate procedures can be developed. <br />4. Delays caused by inadequate stockpiling operation, as determined by the <br />QA/QC CONSULTANT, shall not be cause for an extension in the <br />EARTHWORK CONTRACTOR's completion dates or cause for <br />EARTHWORK CONTRACTOR change orders and all additional cost <br />associated shall be at the EARTHWORK CONTRACTOR's sole expense. <br /> <br /> <br />3.7 GRADING AND SUBGRADE PREPARATION <br /> <br /> A. This Work shall consist of fine grading and preparation of lining subgrade for the <br />construction of the base and side slope lining. The lining subgrade is further <br />defined as those areas and surfaces within the subgrade upon which lining <br />materials are to be placed. <br /> <br />1. Fine grading shall be performed to grade the subgrade to within the tolerances