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Charles H. Bloom Company, Inc. July 12, 1988, 11857 Page 2 for testing. The samplers and equipment will be appropriately cleaned prior to the field investigation. 4. The chemical testing program of the obtained soil and water samples will consist of the following tests: 1) total volatile hydrocarbons ("gasoline"); and benzene, toluene, xylene and ethylbenzene; and 2) total extractable hydrocarbons ("diesel") . 5. Submittal of our letter report presenting and discussing the analytical results of our chemical testing program, with appropriate conclusions and recommendations. SITE DESCRIPTION The Charles H. Bloom Company Inc., is located in Stockton, California, at 2010 West Fremont Avenue. Located north of the site (across West Fremont Avenue) is the elevated State Highway 5. West of the site are structures housing 3M National Advertising, south of the site is a large open area with storage of equipment for 3M, and beyond that is the levee of the Stockton deep water channel. To the east of the site is a short cul -de --sac and buildings which appear to house various company offices. The project site consists of a large building which houses the offices of Charles H. Bloom Company and their warehouse. Outside of the building (within a fenced area) is an open asphaltic -concrete covered storage area. Centrally located in the storage area is the site of the former underground fuel storage tank. This is now an open pit of approximate dimensions, eight feet by ten feet by six feet deep. BACKGROUND On May 3, 1988, Precision Industries removed the 2000 gallon unleaded fuel storage tank. We understand that the tank pit was excavated to a depth of approximately ten feet. One soil sample was taken from the bottom of the excavation pit by Precision Industries personnel, following the direction of the on-site county inspector. At that time, it was noted that water was seeping into the excavation pit and the inspector required that a sample of the water be taken and tested. The analytical test results found that the native soil was not contaminated by fuel hydrocarbons but the water did contain some hydrocarbon constituents. Following the receipt of these results the county originated an Underground Storage Tank Unauthorized Release (Leak) /Contamination Site Report which was transmitted to the Central Valley Regional Water Quality Board.