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02 September 2010 <br /> AGE-NC Project No. 95-0184 <br /> Page 5 of 7 <br /> 2.7. REPORT PREPARATION <br /> Reports will be prepared to present the findings of the IAS/SVE interim activities. Reports <br /> will include a description of work performed with the results of the influent and effluent <br /> vapor samples. Conclusions and recommendations will be included in the reports if <br /> applicable. The report will be in a format acceptable to CRWQCB guidelines, reviewed and <br /> signed by a California Professional Geologist and submitted to the GeoTracker database. <br /> 3.0. FIELD PROCEDURES <br /> The current location of the SVE unit will be adequate for the IAS vapor recovery, which will <br /> continue to allow the property owners and the tenant of site to conduct their day to day <br /> business without interference from the operation of the remediation system. <br /> All field procedures will be overseen by an AGE representative under the supervision of <br /> a California Professional Geologist. Procedures for IAS/SVE system installation, <br /> underground piping installation, start-up period, and weekly/monthly operation and <br /> maintenance procedures are described below. <br /> 3.1. REMEDIATION SYSTEM PIPING NETWORK <br /> A remediation system piping network will be installed underground in a; .Skry1-foot wide by <br /> 1'/2-foot deep trench; the proposed trenching location is depicted in Figure 2. The piping <br /> network will be located in the north section of the site adjacent to the northwest corner of <br /> the parking lot. System piping network will consist of two-inch diameter, schedule 40 PVC <br /> piping attached to the well-heads of existing groundwater extraction wells EW-1 and EW-2 <br /> and routed through a manifold to the proposed soil vapor extraction unit (i.e. catalytic <br /> oxidizer). <br /> A two-inch PVC pipe will be installed into the well casing and connected to a two inch pipe <br /> riser at the surface, forthe air inlet. The in-well air sparging method requires fresh, ambient <br /> air intake to compensate for the volume of the extraction soil vapor to remediate the <br /> ground water. The ambient air will be collected through a particulate filter, measured with <br /> a flow meter, and each well will be fitted with a value to control the flow and optimize the <br /> remediation process. <br /> Following piping placement, the trench will be backfilled with imported road-base sand, <br /> compacted and resurfaced to grade with asphalt. _ <br /> Advanced Geo Environmental,Inc. <br />