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r <br /> Temporary Vacuum Extraction Probes and Existing <br /> Groundwater Monitoring Wells <br /> Six temporary vacuum extraction probes will be driven <br /> fied on <br /> pneumatically into the soil at the probesowill pbe�located at <br /> Figure 1. The perforations in the P <br /> a depth of 20 to 35 wells MW-3eet andbelw MWo4 willebe e. incorporated into the <br /> oundwater <br /> monitoring <br /> remediation system, also. Specificatic for the <br /> groundwater monitoring well retrofit an.: the temporary <br /> vacuum extraction probes are given in Details A-1 and A-2, <br /> respectively. <br /> The temporary vacuum extraction probes and groundwater <br /> monitoring wells will serve as extraction points. A vacuum <br /> will be applied to an extraction paint to vogasllize will flow <br /> hydrocarbon products in the soil. The soil qor <br /> from the soil throinhtheeextractionperforations the <br /> wells. Therobes effectivehe <br /> slotted screening vacuum extraction <br /> ring w <br /> capture radii expected from the g wells s (vacuum extraction <br /> probes and groundwater monito <br /> wells) are given in Figures 3 and 4, respectively. <br /> Trenching and Piping <br /> The extracted soil gases will be transported through <br /> underground piping. soil gases will be extracted from the <br /> d to <br /> probes and wells to a manifolhundergen round pipingthe lwill be <br /> the system equipment. The system <br /> in shallow tr nctrenchesavoid installed tingutilities- <br /> installed <br /> enhes and concrete and <br /> Specifications for <br /> asphalt and the mainline trench are given in Details A-3, <br /> A-5, and A-4, respectively. <br /> Manifold <br /> The manifold box consists of to valves and sampling portsThe <br /> Detail A 6) <br /> that soltocatedthe <br /> individual <br /> amanifoldtbox will ion tbe(either open.or <br /> valves <br /> closed, depending on whether or not an extraction point is <br /> to be upoundofhydrocarbon <br /> tilized. This expedite <br /> remedial <br /> abatement. and <br /> minimize the cost per p <br /> Equipment <br /> in unit, a <br /> ..... -The system. equipment...will include a pumping - <br /> catalytic incinerator, and an ocated atothe northeast <br /> ort as o _...._ <br /> The system equipment will be located at the Extracted soder <br /> of the former station building (Figure 1) . <br />