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ANA <br /> 17, Working To Restore Nature <br /> 3164 Gold Camp Drive SEP 2 2 1992 <br /> Rancho Cordova, CA 95670 <br /> Phone: (916)852-6690 ENVIRONMENT AL HEALTH <br /> Fax: (916)852-6688 � Il / CV4E <br /> September 17, 1992 <br /> Mr. Anthony Mendes <br /> Sank Joaquin County Air Pollution Control District <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> Subject: Notification of Vapor-Extraction Feasibility Test to be Performed at City of <br /> Stockton Fire Engine Company No. 2, 110 West Sonora Street, Stockton, <br /> California <br /> Mr. Mendez: <br /> RESNA Industries (RESNA) proposes to conduct a feasibility vapor-extraction test (VET) <br /> at the subject site during the week of September 28, 1992. At the request of the City of <br /> Stockton, RESNA is performing this work in conjunction with an ongoing environmental <br /> investigation and anticipated treatment of hydrocarbon-bearing soil beneath the subject site. <br /> Lead regulatory oversight for the environmental programs being implemented at the site is <br /> being conducted by Ms. Linda Turkette of the San Joaquin County Public Health Services. <br /> The VET will be performed to collect site specific data and evaluate the feasibility of vapor <br /> extraction as a hydrocarbon-removal alternative. The equipment to be used for the test will <br /> consist of (1) an internal combustion (I.C) engine, (2) instrumentation for measuring air <br /> flow, air velocity, air pressure, and air temperature, (3) polyvinyl chloride piping, fittings, <br /> and wellhead connections, (4) a portable organic vapor analyzer and air sampling apparatus <br /> and 5) existing vapor-extraction wells that exist at the site. Upon completion of work, <br /> RESNA will prepare and submit a letter report to the City of Stockton summarizing field <br /> and laboratory results and conclusions. <br /> We anticipate performing the VET for approximately 6 to 8 hours. The expected <br /> destruction efficiency of the I.C. engine,based upon previous feasibility tests, is greater than <br /> 95 percent. The VET will include influent and effluent air sampling and analysis to evaluate <br /> the destruction efficiency achieved during this test. RESNA respectfully requests <br /> authorization to perform the feasibility test. <br /> 0914amen <br /> 38009-7 <br /> - —+w- <br />