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WreriffarINC. SACRAMENTO It <br /> 3� <br /> ip <br /> l . <br /> October 7, 1992 <br /> Mr. Harlon Knoll 01 1 <br /> rx;-, D., <br /> Environmental Health Specialist ' <br /> 4 1992 <br /> San Joaquin Local Health District f QCfi <br /> 1601 E. Hazelton Avenue ENVIRONMENTAL HEALTH <br /> Stockton, California 95201 PLIICvf <br /> Reference: Remedial Action at the Pacific Bell Facility <br /> on Ashley Road in Stockton, California; <br /> Versar Project No. 1148-035° <br /> t <br /> Dear Mr. Knoll: <br /> On June 5, 1992 , Versar, Inc. (Versar) , on behalf of Pacific <br /> Bell, submitted a report entitled, "Interim Remediation/Pilot ' <br /> Study Report" for the subject site. In this report, it was <br /> concluded that the formation was suitable' forGsoil vapor <br /> extraction (SVE) ; however, due to the low.,ivolatile nature of the <br /> contaminant (diesel fuel) . The soils at the site would not be <br /> satisfactorily remediated by SVE. k <br /> Since submittal of this report, Versar has conducted an <br /> additional analysis of the data collected} throughout the duration <br /> of the project. Based on this, more detailed analysis of the <br /> data, it is proposed that no further action (NFA) be required at <br /> the site, and the site Leaking Underground Storage Tank (LUST) <br /> file be closed. <br /> 31 <br /> This proposal for NFA is based on thelpreiiminary evaluation <br /> of the contaminant loading calculation ofljthei�soil and <br /> computerized chemical transport analysis of the data using the <br /> EPA program SESOIL. <br /> i� <br /> At the present time, the analysis of the data has yet to be <br /> completed; however, upon completion of the data, a copy will be <br /> supplied to you. <br /> If you have questions regarding this matter, please contact <br /> either Mr. Lyle Stuck of Pacific Bell at (408) 554-7665 or myself <br /> I at (916) 962-1612 . Your immediate attention and approval of the <br /> NFA decision in the near future would be greatly appreciated. <br /> jf <br /> Yours sincerely, <br /> I <br /> Michael P. Sellens <br /> Program Manager <br /> cc: Mr. Lyle Stuck, Pacific Bell j <br /> 5330 PRIMROSE DRIVE•SUITE 228 •FAIR OAKS,CALIFORNIA 95628 <br /> TELEPHONE:(916)962-1612•FAX:(916)962-2678 <br />