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S) <br /> 31 January 2000 <br /> AGE-NC Project No 97-0290 <br /> Page 4of10 <br /> 3 1 PERMITTING, PLANNING AND PRE-FIELD WORK ACTIVITIES <br /> Applicable permits will be obtained from the PHS-EHD and the San Joaquin Valley Air Pollution <br /> Control District (SJVAPCD) prior to initiation of the remediation project A site health and safety <br /> plan is currently on-file with the PHS-EHD Prior to drilling activities,each proposed boring location <br /> will be clearly marked and an utility clearance obtained through Underground Service Alert <br /> 3 2 INSTALLATION OF REMEDIATION WELLS <br /> An SVE system in conjunction with an IAS system is proposed to reduce petroleum hydrocarbon <br /> mass within the "core"petroleum hydrocarbon-impacted area at the site In order to maximize the <br /> efficiency of the clean-up efforts, a 24-hour operation of the system is planned A typical destruction <br /> rate of greater than 95%of hydrocarbon vapors is expected throughout the entire cleanup duration <br /> Six additional SVE wells and seven additional IAS wells will be installed at the site to supplement <br /> remediation efforts of the "core"petroleum hydrocarbon impacted area at the site Three of the SVE <br /> wells and five of the IAS wells will be installed at an angle to provide remediation south of the site <br /> Proposed SVE and IAS well locations are illustrated in Figure 3 <br /> 3 3 INSTALLATION OF SOIL VAPOR EXTRACTION/AIR SPARGE PIPING SYSTEM <br /> Two-inch diameter, schedule 40 PVC piping will be installed from the SVE well heads to the vapor <br /> extraction unit, one-inch diameter, schedule 40 PVC piping will be installed from the IAS well heads <br /> to an air compressor Valves will be installed to allow flow control for each well independently The <br /> proposed SVE and IAS unit locations are illustrated in Figure 3 <br /> 34 SOIL VAPOR EXTRACTION SYSTEM START-UP PERIOD <br /> During the SVE start-up period(first week of operation), influent and effluent vapor concentrations <br /> will be collected on a daily basis to ensure optimal destruction of recovered hydrocarbon vapors <br /> Operational parameters(air flow, combustion temperature, volume of processed vapor, oxygen level <br /> and the lower explosive limits (%LEL) will be monitored dally during the start-up period <br /> 3 5 MONITORING AND MAINTENANCE ACTIVITIES <br /> Vapor samples from the influent and effluent will be collected on a monthly basis and submitted to <br /> Advanced GeoEnvironmental,Inc <br />