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- 17 October 2000 AGI:-NC Project No. 98-0450 Page 3 of 7 Sampling parts were installed upstream of the vacuum blower inlet to recover influent soil-gas vapor stream samples, and downstream of the catalytic converter to recover effluent stream samples to monitor the efficiency of hydrocarbon destruction. Field measurements were recorded at re(Yular intervals throughout the pilot test and are summarized in Table 1. On 30 June 2000. a Solleco Feat 250 catalytic converter soil-vapor extraction unit (SVF) was delivered to the site by AGI;. An SVE network was installed connecting wells VW-1 through VW-1 1, monitoring well BMW-3 through BMW-5 and the SVE unit using 2-inch diameter schedule 40 PVC piping and 2-inch gate valves to control Ilow from individual wells. Additionally. each IAS well was networked to the IAS unit using 1-inch diameter schedule 40 PVC piping and 1-inch gate valves to control injected air- yolume to individual sparging wells. The piping was placed below surface grade approximately 12 inches. _ The t�,vo-inch networked SVE inlet was connected to the SVE unit. The influent line was routed through a moisture knockout vessel to a 7.5-horsepower, maximum 250 standard cubic feet pet- minute erminute (scfm) blower. An in-line Dwyer Series 647 in-line differential pressure transmitter (DPT) was installed in the 2.5-inch influent line leading into the SVF catalytic oxidation unit. This meter is monitored monthly to calculated the influent rate. On 14,lulu 2000. the electrical power source and electrical delivery lines were setup and Cite of Lodi Electrical Department conducted power on 17 July 2000. �.5. SVE START-UP The Solleco Ecat 250 SVE system began operation on 17 July 2000. The initiation of the SVE operation was observed on 20 July 2000 by representatives of the San Joaquin Unified Air Pollution Control District (APCD) and ofthe PHS-EHD. The SVE unit operation is conducted in accordance with .APCD permit N-4344-1-0. Measurement of the SVE flow rate, vacuum (potential), concentrations of the extracted soil-vapor and collection of a set of soil.-vapor samples were observed by the APCD personnel. The samples were collected to document baseline concentrations of hydrocarbon vapor in the soil-vapor extracted by the SVE network and to determine the SVF hydrocarbon destruction rate. 2.6. SOIL-VAPOR EXTRACTION -1-he SVE system was monitored weekly for the first month of operation and monthly thereafter. idvanced Geal m inmnenlal.Inc.