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27 March 2000 <br /> AGE-NC Project No, 98-0450 <br /> Paae 9 of l 9 <br /> 4.2. INSTALLATION 01� REMEDIATION WELLS <br /> An SVF system in conjunction with an IAS system is proposed to mith ate the petroleum <br /> hydrocarbon mass from the petroleum hydrocarbon-impacted area at the site. <br /> Seven additional SVE wells and fourteen additional IAS wells will be installed at the site for the <br /> remediation effort ol'the petroleum hydrocarbon impacted area. Proposed SVE well locations arc <br /> illustrated in Figure 5: proposed ]AS well locations are illustrated in figure 6. <br /> Location of the wells are based on a SVA_; radius of influence of 30 ]eet (Corrective /Action Plan, <br /> dated 15 June 1999) and based on an estimated IAS radius of influence ol' 15 feet. <br /> AGE proposes installation oftlle following: <br /> • 'Three dual-screened SVE wells desi4oned as depicted in FigUre 9; <br /> • Four single screened SVF1 wells designed as depicted in Figure 10; <br /> • Fourteen AAS wells designed as depicted in Figure 11 . <br /> Procedures for the installation ofthe remediation wells are described in Sections 5.2.1. and 5.3.1. <br /> 4.3. SOIL VAPOR EXTRACTION!AIR SPARGE: PIPING SYST11."M <br /> Two-inch diameter, schedule 40 PVC piping will be installed sit inches below the surl'ace of the site <br /> and routed from the SVE well heads to the vapor extraction unit. one-inch diameter, schedule 40 <br /> PVC piping will be installed on the surface of the site and routed from the IAS well ]leads to an air <br /> compressor. The proposed SVE and IAS piping system are illustrated in Figure 8. <br /> A 15 by 20 foot chain-link gated enclosure will be installed in the northwest section of the site to <br /> secure the vapor extraction rinit, drop-out drum and air compressor. The proposed location of the <br /> gated enclosure is illustrated in Figure 8. <br /> 4.4. PROPOSED SOIL. VAPOR EXTRACTION SYSTEM DESIGN <br /> Initiation of ail SVE system is proposed within the petroletun hydrocarbon-impacted arta. In order <br /> to maximize the efficiency of the clean-up efforts, a 24-11our operation of the SVF unit is planned. <br /> A catalyrtic destruction process is proposed 60r the recovered hydrocarbon vapor by utilizing a direct <br /> electric heated catalytic-oxidizer soil vapor extraction system (SVE). The SVE relit is somewhat <br /> Adrunced(,'COI:ncirunn1CF1WI,h]C. <br />