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<br /> <br /> Forward Compost Facility Stormwater Improvements 02300 10 EARTHWORK <br /> 5. The lining subgrade shall be maintained in the finished condition until the first <br />succeeding course is placed. Any damage to the prepared lining subgrade by <br />the EARTHWORK CONTRACTOR shall be repaired, at the EARTHWORK <br />CONTRACTOR's expense. Any damage to the prepared lining subgrade by <br />the GEOSYNTHETICS CONTRACTOR, including those caused by a delay <br />of the GEOSYNHETICS CONTRACTOR, shall be at the <br />GEOSYNTHETICS CONTRACTOR’s expense. <br /> 6. The EARTHWORK CONTRACTOR shall notify the OWNER at least 3 <br />working days in advance of when the subgrade is completed and ready for as- <br />built surveys. The OWNER will survey the top of the base and slope subgrade <br />in accordance with Section 01410, SURVEYS. The survey shall provide <br />coordinates and elevations of the subgrade surface at a minimum of 50-foot <br />centers and delineating prominent features. The results of the survey will be <br />provided to the QA/QC CONSULTANT within 2 days of the survey for <br />approval prior to placing overlying materials. The QA/QC CONSULTANT <br />shall have 2 working days to review survey results and may independently <br />verify survey results. The time taken by the QA/QC CONSULTANT in <br />checking and verifying the survey results will be considered included in the <br />total calendar days allotted the EARTHWORK CONTRACTOR before <br />liquidated damages are assessed. <br /> <br /> B. After completion of subgrade, proof-roll the surface of the base of the lined area <br />with a loaded dump truck or similar heavy-wheeled equipment to detect soft or <br />loose zones. Notify the QA/QC CONSULTANT prior to commencement of <br />proof-rolling. If soft or loose zones are found, excavate the soft or loose material <br />to a depth accepted by the QA/QC CONSULTANT, then fill with General <br />Earthfill. The General Earthfill shall be compacted as specified for such fill. <br /> <br />3.8 COARSE GRAVEL MATERIAL <br /> <br /> A. General Requirements: Coarse Gravel shall be placed around riser pipe in sump <br />area as shown on the Construction Drawings and should be fully encapsulated by <br />geotextile. <br /> B. Coarse Gravel Placement: <br /> 1. The HDPE geomembrane lining underlying the Coarse Gravel shall be <br />inspected and approved prior to placement of the Coarse Gravel.