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perpendicular to the pipelines using a backhoe. As detailed on the Chevron - maps, evidence of a single pipe was found 27.5-feet south of the center of Schulte road 3.0-feet below ground surface (bgs) (Figure 2 and Photograph #1). Evidence of the pipeline came in the form of a tar-like substance that was most likely used to wrap the pipe. Photograph #/2 shows the tar wrap inbedded in the soil where the former pipe rested. Photograph ##3 shows the tar wrap after a portion of it had been excavated and brought to the ground surface. No pipes were located. Upon visual inspection of the soil beneath the former pipeline, no stains or hydrocarbon odors were evident. The backfill material surrounding the former pipeline appeared to be native material; a damp, yellow brown, silty clay. A soil sample was collected from the test pit excavation at a depth of _. approximates 4:0-feet bgs. Care was taken by ASE to make certain that none of the tar-like substance was included in the samples. A total of eight (8) test pits (labeled Pipe Locations A thru H) were excavated by ASE, on 100-foot centers along the former pipeline. In each test pit, field inspections were performed by ASE (visual and odor) with no evidence of obvious soil contamination. A soil sample was collected in each test pit as described above. The Chevron representatives remained on site only during the first test pit excavation. The soil samples described above were collected and stored in precleaned, 6- ounce glass sample jars supplied by the laboratory. The samples were then discretely labeled and placed into an ice chest cooled with wet ice. The samples were transported to American Environmental Network (AEN) of Pleasant Hill, CA, a CAL EPA certified laboratory (DOHS x`1172), under chain of custody. 7.0 SOIL BORING AND SOIL SAMPLE COLLECTION A hand-augered soil boring (labeled Tank Location 7.0') was drilled by ASE in the area of the former UST (Figure 2). All drilling and sampling equipment was precleaned prior to use. The soil boring was drilled to investigate the presence of any petroleum hydrocarbons that may have resulted from a leak of the former UST. Drilling _J was terminated at a depth of 7.0-feet bgs. The bottom of boring was determined by visually inspecting the drilling cuttings. From the surface to depth of approximately 5.0-feet bgs, the drilling cuttings consisted of a fill material of silty sand and rock/cement fragments. Just beyond 5.0-feet bgs, native material, damp, medium brown, silty clay was encountered. The boring was drilled to 7.0 feet bgs where soil sample Tank Location 7.0' was collected. Schulte and Chrismnn Road, Tracy CA - May 1995 (ASE #2857)