SITE INFORMATION AND CORRESPONDENCE

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1FCr1%N8rN.. SACRAMENTO February 7, 1989 s r, h Ms. Letitia Resch San Joaquin Local Health District 1601 East Hazelton Avenue Stockton, California 95205 Reference: Application for Permit to Construct Monitoring Wells and/or Soil Borings for the Purpose of Subsurface Investigations at 2400 Airport Way, Stockton, California; ilersar Job No, 6147.323 Dear Ms. Resch: The purpose of this letter is to present our work plan and apply for permits to drill three soil borings at the site located at 2400 Airport Way in Stockton, California. The purpose of the work is to characterize the site prior to being developed into a service station. This property transfer assessment is being completed for the current property owner to fulfill a lender's requirement. It is important to note that there is no evidence of potential contamination and that we have no reason to suspect or anticipate encountering any subsurface contamination. The subject site is depicted in Figure 1, Attachment I . The site is located at 2400 Airport Way in the southwest quadrant of the intersection of Tenth Street and Airport Way. The Assessor's Parcel Number for the property is 169-100-29. No detailed records of past operations at the site are available; however, it is reported that a service station operated from approximately 1956 to 1977. The only records available of past operations include two crude site diagrams which were on file with the Fire Department. The Fire Department records are included here as Attachment II. The records indicate that tanks were installed in 1956, then replaced in 1964, and later, reportedly removed. No records were available from the San Joaquin Local Health District files. Furthermore, there are no records on file with the district regarding the removal of the underground storage tanks or any subsurface sampling. The objectives of this property assessment sampling are to (1) make an initial determination if any subsurface contamination is present from the past operation of underground storage tanks; (2) determine the extent of the contamination; and (3) accurately determine the concentrations of any petroleum hydrocarbons present in the soil . To accomplish this, soil samples will be collected for chemical analyses during the drilling of three boreholes. After the boreholes have been drilled they will be completed with neat cement. The proposed locations of the boreholes are shown in Figure 2, Attachment I. 5330 PRIMROSE DRIVE 0 SUITE 228 0 FAIR OAKS,CALIFORNIA 95628 0 TELEPHONE: (916) 962.1612