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days of the survey for approval prior to placing overlying materials. The QA/QC <br /> CONSULTANT shall have two working days to review survey results and may <br /> independently verify survey results. The time taken by the OWNER to perform the <br /> 40 survey (2 working days) and provide survey results to the QA/QC CONSULTANT <br /> (2 working days) and by the QA/QC CONSULTANT in checking and verifying the <br /> survey results (2 working days) will be considered included in the total calendar <br /> days allotted the EARTHWORK CONTRACTOR before liquidated damages are <br /> assessed. <br /> C. The OWNER will perform up to two as-built surveys of each layer. If more than <br /> two surveys are required for any layer due to the EARTHWORK CONTRACTOR's <br /> deficiencies in providing required thickness or grade, the costs for these additional <br /> surveys will be at the EARTHWORK CONTRACTOR's sole expense and the cost <br /> of these surveys will be subtracted from payments to the EARTHWORK <br /> CONTRACTOR. <br /> 1.6 SURVEYS FOR MEASUREMENT AND PAYMENT <br /> A. The aerial topographic survey depicted on the Construction Drawings, as modified <br /> by the preconstruction survey, will be used as the base topography for <br /> measurement calculations. The DESIGN ENGINEER shall provide the <br /> EARTHWORK CONTRACTOR with an electronic file of the aerial topographic <br /> survey. <br /> B. When the Specifications or the OWNER require Bid Schedule items of Work to <br /> be measured by surveying methods, the EARTHWORK CONTRACTOR shall <br /> perform the surveys. The EARTHWORK CONTRACTOR will reduce the field <br /> notes and calculate final quantities for payment purposes. The calculations will be <br /> given to the OWNER and QA/QC CONSULTANT for review. <br /> 1.7 SURVEYING ACCURACY AND TOLERANCES <br /> A. Control traverse field surveys and computations shall be performed to an accuracy <br /> of at least 1:25000. <br /> B. The tolerances generally applicable in setting survey stakes shall be as set forth <br /> below. Such tolerances shall not supersede stricter tolerances required by the <br /> Construction Drawings or Specifications. <br /> Type of Line or Mark Horizontal Position Elevation <br /> Permanent reference points 1 in 10,000 +0.01 ft. <br /> General Excavation <br /> and Earthwork I in 2,000 +0.10 ft. <br /> C. Tolerances for minimum thicknesses shown on Construction Drawings shall be <br /> between 0.0 and +0.2 foot. <br /> D. Tolerances for slope grades flatter than 4:1 (horizontal;vertical) shall be +0.2 <br /> percent measured within 75-foot grid points. <br /> E. Tolerances for the top of subgrade shall be between 0.0 and—0.2 foot. <br /> Forward Landfill WMU FU-04 <br /> 01410 3 SURVEYS <br />