SITE INFORMATION AND CORRESPONDENCE

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�"lt'�1<C�FM:Ne�tiCE LTki 3L� January 3, 1989 Charles Hunt San Joaquin Local Health District Environmental Health Division P.O.Box 2009 Stockton, CA 95201 Dear Mr. Hunt: Attached is chronology of events on the tanks removed at the the Tri/Valley Growers Plant K facility located at A & B Weber Street, Stockton. April 7, 1986 : Tom Vogel informed Laurie Cotulla. of Tri/Valley Grower's intention of removing the 1 ,000 gallon underground gasoline tank. The letter also included information of a Beta and Associates monitoring well. (Refer to ATTACHMENT 1) April 29, 1986: Laurie Cotulla issued instruction on water sampling, soil borings and sampling, closure in--place and deed notification. (Refer to ATTACHMENT 2) May 13, 1986: Tom Vogel submitted permits for the monitoring well and sample holes. (Refer to ATTACHMENT 3) May 29, 1986 : The monitoring well was analyzed for BTX and GC/FID hydrocarbons. Results show none detected. (Refer to ATTACHMENT 4) June 11, 1986: Tom Vogel was instructed to remove more soil in the excavation until contamination its not detected. A composite sample of the soil removed was analyzed and the results show lead at 29.2 mg/kg. and FID hydrocarbon- gasoline at 206 ppm. (Refer to ATTACHMENT 5) June 16, 1986: More soil was removed in the excavation. A composite sample of the soil removed was analyzed and the results show no detection of BTX, no detection in the FID hydrocarbon scan and 7. 27 mg/kg of lead. (Refer to ATTACHMENT 6 . Verbal instructions were made to Tom Vogel that removal of the contamination was complete and the excavated soil had to be disposed of as a hazardous material because of gasoline and lead contamination. June 26, 1986: The contaminated soil was hauled to International Technology Corporation under Manifest # 86289776 and 84681073. (Refer to Attachment 7) An affadavit of Disclosure was provided by Tri/Valley Growers to the new owner to be recorded in the deed.