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CAMBRIA <br /> the relationship between vacuum and vapor flow rate for the wells After the short-term testing, <br /> Cambria will conduct long-term SVE testing on one or more of the wells, depending on the <br /> results of the short-term testing As previously discussed, the testing duration will be limited to <br /> five days, in accordance with SJVAPCD regulations <br /> A mobile SVE unit (Solleco 250TCat) will be used for testing It is equipped with a liquid-ring <br /> pump as a vacuum source and thermal oxidizer to treat the extracted soil vapor Cambria will <br /> measure the vapor extraction airflow rate, the applied vacuum at the wellhead, concentrations in <br /> the vapor stream, and the vacuum influence in nearby wells periodically during the long-term <br /> test <br /> A Horiba HEXA J-senes hydrocarbon analyzer, calibrated to iso-butlylene, will be used to field <br /> measure hydrocarbon concentrations in the extracted vapor stream A TSI model 8330 air <br /> velocity meter will be used to measure vapor extraction velocity rates and temperature A <br /> Thomas Industries vacuum pump will be used to collect the vapor samples Vapor samples will <br /> be collected in one-liter Tedlar bags for laboratory analysis Magnehelic differential pressure <br /> gauges will be used to measure the vacuum applied at the wellhead and induced in nearby wells <br /> • Chemical Analyses: Selected vapor samples will be analyzed for TPHg, BTEX, and fuel <br /> oxygenates by EPA Method 8260B <br /> Report Preparation•Following the receipt of analytical results from the laboratory, Cambria will <br /> prepare a written report, which will include field procedures, laboratory results, SVE test <br /> findings, and conclusions <br /> The scope of work described in this work plan will be performed under the supervision of a <br /> registered geologist or professional engineer <br /> SCHEDULE <br /> In accordance with the schedule decided upon during our July 28, 2003 meeting with SJCEHD <br /> and the RWQCB, the SVE well installations are scheduled for Setember 16 through 18, 2003 <br /> During the meeting, SJCEHD requested that the SVE test be scheduled by October 003 Due <br /> to equipment and personnel availability, Cambna scheduled the SVE test for <br /> October 6 through 10, 2003 The report summarizing the well installations and the SVE test will <br /> be submitted by November 15, 2003 <br /> 0955 6 <br />