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As-Built CQA Report for the Construction of Area 2A at the Foothill Sanitary Landfill <br /> San Joaquin County,California <br /> • findings were in agreement with AES (2015). His detailed peer review report is included in <br /> the Appendix C.2c. <br /> Details of interface testing configurations and the test results are discussed in Section 6.4.5 <br /> of this report. <br /> d. Operations Layer Particle Size: The maximum particle size for the operations layer was <br /> specified at 3/8-inch where in contact with the geomembrane and in the top foot above the <br /> geomembrane, and at 3 inches for the upper 1 foot. During the excavation for the Area 2A <br /> construction, the Contractor selectively stockpiled the generally sandy materials <br /> encountered, as called for in the Specifications, and screened it through a 1-inch screen. <br /> These materials contained clods with sizes greater than 3/8 inch. Based on field <br /> observations, Geosyntec relaxed the maximum particle size to 1 inch. This variance is <br /> documented in Geosyntec's Construction Memorandum#4 included in Appendix C.3. <br /> e. Leachate Force Main Modifications: The leachate force main was modified to provide a <br /> second "spare" line for connection to a future separate leachate storage tank. A spare force <br /> main was installed and routed to the leachate tank farm. The layout of the as built <br /> temporary and spare (future) leachate force main pipes is shown on the As-Built Record <br /> Drawings in Appendix D.2. <br /> • 1.6 SURVEYING AND PREPARATION OF RECORD DRAWINGS <br /> As-built thicknesses of foundation soil layer, GDM,and operation soil layer were surveyed by F3. They <br /> are included in Appendix D.2. F3 also compiled survey data for soil pore gas collection pipes, <br /> lysimeters and LCRS piping and risers. The survey data were verified by AES' QA/QC Manager and <br /> by Geosyntec. Additionally, GBE prepared the as built panel layouts for HDPE geomembrane and <br /> GCL. The Construction Drawings and as-built plans are included in Appendix D and appear in the <br /> following order: <br /> ■ Appendix D.1 -Construction Drawings,as included in the bid documents <br /> ■ Appendix D.2 -As-Built Survey Data Showing Soil Layer Thicknesses <br /> o Cover Sheet(Signed and Certified) <br /> o Earthwork Exhibit <br /> o Point Over Point Exhibit(2 sheets) <br /> o Point Over Point List(2 sheets) <br /> o Primary LCRS Pipe <br /> o Gas Collection, Lysimeter,Storm Drain, Electrical, Mechanical and Secondary <br /> o Utility, Electrical,and Storm Drain Point List <br /> • o Liner Exhibit <br /> PA14 Projects114-101(SJCDPW North County and Foothillffoothill CQAIReportlFinal RepontToothill CQA Rport-Final.docx <br /> 7 <br />