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PHASE, h ENVIRONMENTAL SITE ASSESSiViENk Advanced GeoEnvironmental, Inc, EXECTJTIVE SUMMARY AIRPORT PROPERTY 7910 Longe Street Stockton, California A Phase I Environmental Site Assessment was performed for the property occupying an approximately 2.1-acre portion of San Joaquin County Assessor's Parcel Number 177-260-25,with an address of record of 7910 Longe Street. The property is located at the northeast corner of Longe Street and Stimson Street in the southwest portion of the Stockton Metropolitan Airport complex and is on land leased from the Airport. The property contains one 30,000-square-foot concrete tilt-up building used for warehousing surrounded by undeveloped grassy areas to the south and east and by paved areas and landscaping to the north and west. The subject property was undeveloped land until the present building was constricted in approximately 1977. The property was once part of a military base that was decommissioned between 1950 and 1955. AGE has no knowledge that the subject property has been utilized as a service station,dry cleaner,auto repair shop or any function that would be of environmental concern. The building was constructed of concrete walls and Flooring with a wood/composition roof. At the ( time of the site reconnaissance on October 15 2000, the building was utilized to store materials for Earth Grains, including baking machinery, racks, pans, pallets and nnisect]aneous storage. The concrete flooring appeared in good condition, with no visible cracking or staining. There were no visible items indicative of possible asbestos-containing materials (ACM's). There was no visible stained soil on the property and no visible pipes protruding from the ground that might indicate the presence of an underground storage tank (UST). AGE noted the remnants of a small building foundation and dump area to the southeast of the building. Groundwater is encountered on the subject property at approximately 30 to 40-feet below surface grade and flows generally to the northeast, putting the airport in a down-gradient position. AGE reviewed files at the San Joaquin County Public Health Services-Environmental Health Department (PHS-EHD) for sites listed on governmental databases that might indicate possible environmental concern to the subject property.Based on review of the files for adjacent sites and up-gradient sites within Y2-mile from the subject property, contaminants from adjacent or up-gradient sites are not considered likely to have impacted the subject property. No potential environmental concorns were noted during the site reconnaissance or found during the ASTM interview with the property owner. There was no evidence of hazardous substance utilization or storage on the subject property. There was no evidence that underground storage tanks were formerly located on the property.