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Cjeofogica(Tecknics Inc. Page 2 Project No.: 675.2 Murray Soil Investigation Report January 5, 1999 5. A soil sample was collected in a clean brass tube at a depth of 10 feet bgs. The tube was capped and placed on ice for shipment to the laboratory. No unnatural odor or staining was observed in the soil. 6. After the soil sample was collected the trench was closed by backfilling and compacting with the backhoe bucket. The trench was finished flush to grade. 7. The sample was submitted to Sherwood labs and tested for BTEX by EPA method 8020, TPH-G by EPA method 5030/8015(m) and TEPH-D, MO by EPA method 8015m. Floor Drains & Rock Drain Well 1. The two floor drains in the break room area were opened and cleaned out. A 4-inch diameter pipe and the drain line was discovered headed to the east from the eastern drain connected the two drains. 2. Personnel from Roto-Rooter were brought in to determine the length and termination point of this pipe. Through use ofa netometer and backhoe it was determined that the pipe went approximately 10 fee east f the building where an elbow with a cleanout was located. The pipe then turned so and extended a few feet prior to entering a septic tank. The first chamber of the septic tank was opened and a sample of the contents was collected. The contents of the tank were a high moisture material consisting of dirt, plastics and fiberglass. 3. The septic tank was closed and the hole in the asphalt was filled with base rock. 4. The sample was submitted to Sherwood labs and tested for TEPH-D, MO by EPA method 8015m, Halogenated Solvents by EPA method 8010, and Acetone by EPA method 8240. Scars in Concrete Floor 1. There are two square, concrete patches in the concrete floor of Building 2. The south patch was named P-1 and the north patch was named P-2. 2. Scar P-1. • This patch is located in the addition to Building 2, southwestern of the former bean processing area. Refer to the Sketch Map in Figure 2. • A core was cut through the concrete patch. The concrete patch was found to be w approximately 4 inches thick. Beneath the concrete there was approximately 6 inches of fill then another concrete layer approximately 3 inches thick. Beneath the second concrete layer was native clay soil. It was decided that this concrete patch was probably an old footing for equipment and not of environmental concern. • A soil sample was not collected. No unnatural odor or staining was observed in the soil. • On December 15, 1998, under the supervision of Lori Duncan of SJC PHS/EHD the) OCA hole was grouted with a neat cement grout and finished with a concrete cap flush to the floor. 3. Scar P-2 • This patch is located next to the large vertical above ground storage tank in the area of the former bean processing. • A core was cut through the concrete patch and a hand auger borehole was advanced to approximately 3 feet bgs. The borehole was terminated at that depth because that hand auger could not be advanced past the large amount of concrete pieces in the fill. • A second core was cut outside of the patched area. A hand auger borehole was advanced to 10 feet bgs and a soil sample was collected in a clean brass tube. The tube was capped and placed on ice for shipment to the laboratory. No unnatural odor or staining was observed in the soil. V