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... .r 07 June 2012 AGE-NC Project No. 95-0184 Page 11 of 14 The proposed location of the SVE/IAS system (Figure 7) will allow the current site businesses to conduct their day to day business without interference from the operation of the system. The SVE/IAS system will be secured by a gated enclosure approximately 15 feet wide by 25 feet long and six-feet in height. e7 4.5. SVE/IAS SYSTEM START-UP PERIODS After the SVE and IAS systems are installed, AGE will initiate a start-up period (first week of operation). Influent and effluent vapor concentrations will be collected on a daily basis using a photo-ionization detector (PID) to ensure optimal destruction of recovered hydrocarbon vapors. In addition, operational parameters airflow,combustion temperature, volume of processed vapor and hydrocarbon level will be monitored daily during the start-up period. In order to maximize the efficiency AGE proposes running the SVE/IAS systems for a period of 24 hours a day and 7 days per week. A typical destruction rate of greater than 95% of hydrocarbon vapors is expected throughout the entire cleanup duration. 4.6. MONITORING AND MAINTENANCE ACTIVITIES - SVE/IAS REMEDIATION OPERATION AND MONITORING1 y° or the SVE, the catalytic oxidizer unit will be used to apply a vacuum to VW2A and VWSA/B and new SVE wells. The induced vacuum will be measured at these wells. Soil vapor concentrations from the extraction wells will be measured at regular or a minimum weekly intervals throughout the remediation. Several parameters, including radius of influence,sparging rate,sparging vapor concentrations, soil vapor pressures,ground water depths and dissolved oxygen, will be measured at surrounding wells, both vertical and laterally for spacial distribution. The induced pressure at monitoring points, sparging rate (discharge rate), vapor concentrations at monitoring points, depth to ground water in surrounding wells and most crucially dissolved oxygen will be measured priorto the startup of the IAS remediation to demonstrate a baseline for geochemical (anaerobic zone) and monitored throughout the IAS remediation. The extraction well vacuum, induced vacuum at monitoring points, extracted hydrocarbon concentrations and extraction flow rate will be measured at regular intervals throughout the remediation as required for evaluating soil vapor recovery and destruction. Data will facilitate any required changes to the design of the current SVE system (new wells) and will be used to determine the spacing of the vapor wells to be compatible with the IAS Advanced CeoEnvironmental,Inc.