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design parameters of a new vapor extraction remediation system. Vapor Extraction Pilot Testing and Sampling Initial Testing The purpose of the initial testing is to provide order-of-magnitude information on achievable vapor flow rates, vacuum, radius of influence and extracted soil vapor concentrations. This information will also be used to generate a 2006 Feasibility Report with the new data generated from this event. Initial testing will utilize an internal combustion engine equipped with a catalytic converter to induce a vacuum for a period of at least two hours on each extraction well in tum respectively and utilizing the others extraction wells as observation wells. The total purging and extraction period of each extraction well testing will not exceed 2 hours. We propose to purge, monitor and sample three of the extraction wells on the first day and complete the testing and monitoring on the other two extraction wells on the second day. Applied vacuum, P.I.D. measurements, flow rates, down hole vapor temperatures and the induced vacuum in the perimeter extraction observation wells will be monitored and logged every fifteen minutes. Extracted vapor concentrations for each well that is being purged will be measured periodically (every fifteen minutes) with an Thermodine 580 B PID, additionally two influent vapor samples per well will be collected for laboratory analysis in Tedlar bags to analyze the extracted vapor concentrations. One tedlar bag will be collected at the start of the extraction process on each vapor well (baseline concentrations) and then another vapor sample will be collected at the end of the extraction cycle for that extraction well. The air samples will be submitted to Air Toxics in Folsom, Ca. a State-Certified Laboratory for analysis of TPHg, BTEX and Oxygenates by EPA Method T01 5 . The SVE testing will be conducted under permit exemption from the local Air Pollution Control District (APCD). Off gas treatment will be via catalytic converter. One effluent sample will also be collected and analyzed for TPHg BTEX and Oxygenates by EPA Method TO 15 in order to verify destruction efficiency. The collected data will be used to calculate vacuum radius of influence and potential hydrocarbon removal rates. Reporting Following the completion of testing, California Geophysical Group, Inc. will prepare a SVE pilot test technical report. The report will present field and analytical data, and will include a feasibility study comparing the cost-effectiveness of soil vapor extraction to that of other remedial techniques. Protocols and Safety All field activities performed at the site will be conducted in accordance with the Quality Assurance/Quality Control Plan and Site Specific Health and Safety Plan previously submitted to the County or as necessary. Permitting and Schedule Due to the short duration of the pilot test no formal permitting will be required by the APCD.