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<#*> ETIC <br /> ENGINEERING �FA�..a� <br /> 27 September 2005 AFR�jON�F' ne00S <br /> Ms. Brooke Birkie <br /> 1430 Lincoln CFS 'y <br /> San Rafael,CA 94901 <br /> Subject: Ozone/Hydrogen Peroxide Pilot Testing Notification <br /> Former Exxon RS 7-3942 <br /> 4444 North Pershing Avenue, Stockton,CA <br /> Dear Ms. Birkie: <br /> At the request of ExxonMobil Oil Corporation, ETIC Engineering, Inc. (ETIC) plans to conduct an <br /> ozone/hydrogen peroxide injection pilot test at the above-referenced site for approximately 3 months. <br /> This pilot test will be conducted in accordance with the Work Plan for Chemical Oxidation Pilot Study <br /> dated July 2005, which has been approved by the Regional Water Quality Control Board and the San <br /> Joaquin County Public Health Services. The test is anticipated to begin on 3 October 2005. The test will <br /> be conducted by injecting ozone and hydrogen peroxide into onsite wells IP1A,IP1B,IP2A,IP2B,IP3A <br /> and IP3B. The pilot test is being performed to gather information regarding the effectiveness and <br /> feasibility of insitu chemical oxidation as a viable technology for remediation the hydrocarbon impacted <br /> soil and groundwater onsite. The duration of the pilot test may be decreased based on the information <br /> gathered during the course of the test. <br /> Ozone and hydrogen peroxide will be injected using a system housed in a trailer located onsite. A soil <br /> vapor extraction system consisting of a blower and granular activated carbon for vapor abatement will be <br /> used in conjunction with the injection system. Groundwater and soil vapor will be monitored for <br /> hydrocarbons during the test. Soil vapors and ambient air will also be monitored for ozone during the test. <br /> Should you require additional information,please do not hesitate to contact us at(925)602-4710(ext.33. <br /> for Karthika Thurairajah or ext.23 for Ted Moise). <br /> Sincerely, <br /> PxA�7 <br /> Ted Moise. <br /> Senior Project Manager <br /> cc: Ms.Diane Filippi <br /> Mr.James L.Barton—California Regional Water Quality Control Board,Central Valley Region <br /> Mr.Harlin Knoll—San Joaquin County Public Health Services <br /> Ms.Ester Davila—San Joaquin Valley Unified Air Pollution Control District <br /> Mr.Kent Miller—City of Stockton Fire Prevention Division <br /> Ms.Jennifer Sedlachek—ExxonMobil Refining and Supply Company <br /> G:\ jects\73942WBIIC wnc hydrogenp oxid txhnobgy.0IW\7-3%2 Ozone Injection NM Test Nofifiuion.d <br /> 2285 Morello Avenue, Pleasant Hill, CA 94523 • Phone: 925.602.4710 • Fax: 925.602.4720 • License#624022 <br />