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25 July 2008 <br /> AGE-NC Project No. 99-0682 <br /> Page 5 of 6 <br /> manufacturer' s recommendations (i.e., lubrication, oil changing, system adjustments, etc.). <br /> 2.7. REPORT PREPARATION <br /> Quarterly reports will be prepared presenting the findings from the SVE interim activities. The <br /> quarterly reports will include a description of work performed and the results of the influent and <br /> effluent vapor samples. Conclusions and recommendations will also be included in the reports, if <br /> applicable. The reportwill be in a format acceptable to CVRWQCB guidelines and will be reviewed <br /> and signed by a California Professional Geologist. <br /> 3.0. FIELD PROCEDURES <br /> All field procedures will be overseen by an AGE representative under the supervision ofa California <br /> Professional Geologist. Procedures for underground piping installation, start-up period, and <br /> weekly/monthly operation and maintenance procedures are described below. <br /> 3 . 1 . REMEDIATION SYSTEM PIPING NETWORK <br /> A network oft-inch diameter, schedule 40 PVC home-run piping will be installed from remediation <br /> wells VW- 1 through VW-4 in a series of trenches, approximately 12 inch wide and 18 inches deep. <br /> All PVC piping will be routed from each remediation well head to the extraction manifold; from the <br /> manifold, the PVC piping will be routed to the SVE condensation entrapment tank, located inside <br /> the SVE remediation system fenced enclosure. At the extraction manifold, within the remediation <br /> enclosure, dedicated PVC ball valves, saniR n worts. and air flow gau es wTi be installed at <br /> terminus of eac well home-run piping (Figure 5) in order to draw soil-vapor from each well <br /> independently or from a combination of specific wells and to determine the efficiency of SVE at each <br /> well location. Following piping placement, the trench will be backfilled with imported road-base <br /> sand, compacted, and resurfaced with asphalt. Cross sectional views of the process piping layout are <br /> illustrated on Figure 3 . <br /> 3.2. SOIL VAPOR EXTRACTION SYSTEM DESIGN <br /> The 250 TCAT SVE unit, consisting of condensation separator, a vacuum blower, and a gas heated <br /> catalytic oxidizer, is proposed for hydrocarbon vapor recovery at the site; the 250 TCAT should be <br /> able to extract soil vapor between 225 and 250 cubic feet per minute (cfin). The SVE unit will be <br /> connected through an extraction manifold box to vapor recovery wells VW- 1 through VW-4; <br /> Advanced GeoEnvironmental, Inc. <br />