SITE INFORMATION AND CORRESPONDENCE

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GROUND ZERO ANALYSIS, INC. 2291 W.March Lane, Suite 127D Stockton, California 95207 Telephone: (209) 952-3481 Facsimile: (209)952-9892 August 14, 1997 Mr.Michael Infuma San Joaquin County PHS/EHD P.O.Box 0388 Stockton, CA 95201-0388 Subject: Site Closure Documents Fortner Steve's Rentals, 275 Grant Line Road, Tracy, California County Site Code 2435 Dear Mr. Infurna: Pursuant to correspondence from your office dated June 5, 1997, Ground Zero Analysis, Inc. (Ground Zero) is providing requested site closure documentation for the property located at 275 E. Grant Line Road, Tracy, California. Enclosed for your files are the site closure checklist, manifest documenting disposal of a 250-gallon waste oil tank in December 1989, manifests documenting disposal of 41 cubic yards of soil in June 1995, shipping receipt and corresponding "milk run" manifest documenting disposal of groundwater purged from the groundwater monitoring wells. In addition to the enclosed documents, you had also requested a formal statement from the City of Tracy concerning the "clarifier/sump" still located inside the building. Mr. Bob Sagaser of the City of Tracy Utilities Department indicated that no untreated discharge in excess of the Pretreatment Program Local Limits are permitted. A list of discharge limits is enclosed. Mr. Bill Robinson of the Tracy Fire Department indicated in a telephone conversation on June 9, 1997 that there are no specific regulations in the Fire Code pertaining to clarifiers. The Fire Department would intervene only if the clarifier was a potential methane trap. Mr. Robinson referred the matter to Mr. J.B. Teig at the Building Department. According to Mr. Teig, the building department had no specific policy with regard to clarifiers. He indicated that clarifiers are to be constructed in accordance with the Uniform Plumbing Code. The clarifier is currently not in use. Based upon conversations with City personnel, it appears that no further action related to the "clarifier/sump" is required. A workplan and associated permit application and fee for destruction of site monitoring wells will be submitted under separate cover.