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S E C O R <br /> Ms. Devra Lewis <br /> January9, 2004 <br /> Page 3 <br /> and concrete) and gray hydrocarbon staining was observed in the excavation beginning at a depth of <br /> approximately 20 inches bgs. <br /> EX-4: No intact pipes were found in this excavation. However, a 56-inch long section of 4-inch <br /> diameter steel pipe with a coupler and small sections of yellow fiberglass product lines (up to one foot <br /> in length) were found during the excavation (photo 7). Soil encountered consisted of fill material(clay <br /> with rocks, concrete, and metal electrical conduit)and gray hydrocarbon staining was observed in the <br /> excavation beginning at a depth of approximately 36 inches bgs. <br /> EX-5: Five steel pipes trending northwest to southeast were located in excavation EX-5 (photos 8 <br /> and 9). Soil encountered consisted of fill material (clay with rocks, bricks, concrete, and metal <br /> electrical conduit) at the west end of the excavation and a silty sand/sandy silt fill on the west side of <br /> the excavation. Gray hydrocarbon staining was observed in the excavation beginning at a depth of <br /> approximately 30 inches bgs. <br /> • One three-inch diameter steel pipe was located in the west end of the excavation at a depth <br /> of approximately 52 inches bgs (photo 8). <br /> • A group of two four-inch diameter and one six-inch diameter pipes were located in the middle <br /> of the excavation at depths of approximately 42 inches bgs (photos 8 and 9). The middle <br /> pipe of the group(six-inch pipe)was open ended at a coupler. The pipe was filled with two to <br /> three inches of soil. Measurable amounts of product was not observed within the pipe, <br /> however, soil that was collected three inches within the pipe was moist, had a photo ionizing <br /> detector (PID) reading of 204 parts per million (ppm), and an oily film was present after a <br /> sample of the soil was placed into water. <br /> • One four-inch diameter steel pipe was located in the west end of the excavation at a depth of <br /> approximately 52 inches bgs (photo 8). <br /> EX-6: Pipes were not found in this excavation. Soil encountered consisted of fill material (clay with <br /> rocks, bricks, and concrete), and an abandoned electrical line was encountered. Gray hydrocarbon <br /> staining was observed in the excavation beginning at a depth of approximately 36 inches bgs Total <br /> depth of excavation was approximately 5.5 feet bgs. <br /> EX-7: Pipes were not found in this excavation. Soil encountered consisted of fill material (clay with <br /> rocks, bricks, concrete, and rebar). Gray hydrocarbon staining was observed in the excavation <br /> beginning at a depth of approximately 36 inches bgs Total depth of excavation was approximately <br /> 7.5 feet bgs. <br /> EX-8: Pipes were not found in this excavation. Soil encountered consisted of fill material (clay with <br /> rocks, bricks, and concrete). Gray hydrocarbon staining was observed in the excavation beginning at <br /> a depth of approximately 24 to 36 inches bgs. Total depth of excavation was approximately eight feet <br /> bgs. <br /> EX-9: Two four-inch diameter steel pipes trending northwest to southeast were located in <br /> excavation EX-9 at a depth of approximately 52 inches bgs (photo 10). Soil encountered consisted of <br /> fill material (clay with rocks and concrete). Gray hydrocarbon staining was observed in the <br /> excavation beginning at a depth of approximately 36 inches bgs. <br /> Stockton Parcel 2A Utility Search Report <br />