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DRAFT 3.4 System Location and Design The VES will be located near the southeast corner of the Arts & Artists building. This location will place it on the neighboring property (A & W Restaurant). Access permission is currently being secured by GeoAudit and Mr. Jim DeMera. This location will require very little piping and trenching. A gated enclosure, approximately 15 feet by 20 feet, will be obtained to enclose the unit. ' Two-inch PVC Piping will be installed from RW-1 and MW-1 to the VES dropout drum. The piping will carry hydrocarbon vapors from the well heads to the VES unit. A PVC ball valve will be installed in each line so vapors can be drawn from each well independently, if ' necessary. 1 The vapor recovery pipe from RW-1 will be placed in the ground. A shallow trench will house the line from the well head to the gated enclosure. From the enclosure to the drop- out drum, the line will be installed above-ground. Since MW-1 will be within the enclosure, ' all vapor recovery piping will be above-ground. A plan of the proposed piping and VES unit location is illustrated in Figure 6. ' If access permission cannot be obtained from A & W, the unit will be placed behind the site on a parcel of Iand owned by Ms. Lehr (near the locations of MW-2 and MW-5). However, if this second option is necessary, access permission from the City of Lodi will be required to trench across the alley behind the site. This could delay start-up of the VES by several weeks.. ' 3.5 Supplemental Fuel Supplemental fuel is required for the operation of the VACLEEN 1000. Natural gas is available on-site. Representatives of P. G. & E., the local natural gas provider, will install a dedicated gas line. The line will connect with the VES within the proposed enclosure. A meter will be installed to monitor supplemental fuel consumption. 3.6 Monitoring ' The VES will monitored using a photo-ionization detector (PID). PID readings will collected on a weekly basis and plotted to track remediation progress. However, for the first few weeks, PID readings will be collected at least twice a week. The data obtained from the ' PID readings will assist in determining when to drill confirmation borings. PID readings will be measured at the VES intake, prior to catalytic destruction and after catalytic destruction. Sample points are installed on the VES unit at each of these locations. Air samples will also be collected on a monthly basis. These air samples will be collected from a sample port installed before the drop-out drum. The samples will be collected in ' Tedlar bags and transported to a state-certified laboratory for analysis. The samples will be o.aopnl A.&s.-i.*1.. .7 A"Wn-MA7