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• The fuel additive MTBE was detected in three of the four soil-boring ground water samples, <br /> at concentrations of 28 µg/1 (136 and B9) and 8.7 µg/1 (118). <br /> Dissolved lead was not detected at or above laboratory reporting limits in the ground water samples. <br /> SOIL EXCAVATION <br /> On 23 October 2000,hydrocarbon-impacted soil at the former northern dispenser area was removed <br /> with an excavator and 2.45 cubic-yard bucket and stockpiled on the eastern edge of the site. <br /> Excavated soil was field screened for the presence of volatile organic compounds using an OVM. <br /> Ground water was present within the limits of the excavation at a depth of 15 feet bsg. <br /> On 20 and 21 October 2003,hydrocarbon-impacted soil north of the October 2000 excavation area <br /> was removed with an excavator and 2.45 cubic-yard bucket and stockpiled on the eastern edge of <br /> the site.Excavated soil was field screened for the presence of volatile organic compounds using an <br /> OVM. Ground water was present within the limits of the excavation at a depth of 13 feet bsg. On <br /> 21 October 2003 the excavation was halted due to the discovery of one 500 gallon UST. <br /> On 05 November 2003 the UST was removed under the supervision of the EHD. The resumption <br /> of the excavation activities occurred 10 November 2003 and continued until 12 November 2003.At <br /> this time the excavation was backfilled with clean fill material. <br /> Saturated soil was excavated from below the water table and stockpiled on site within a soil <br /> containment berm. Soil was placed within plastic for temporary storage. The open excavation area <br /> was surrounded by caution fencing. No AGE or subcontractor personnel was allowed into the <br /> excavation. <br /> REFERENCES <br /> California Division of Mines and Geology, 1981. Regional Geologic Map Series, Sacramento <br /> Quadrangle. <br /> Olmsted,F.H.,and G.H.Davis, 1961,Geologic Features and Groundwater Storage Capacity ofthe <br /> Sacramento Valley, California, U.S. Geological Survey Water Supply Paper 1497,241p. <br /> Advanced GeoEnvironmental,Inc. (AGE)Excavation and Sampling Report 10 August 1998, <br /> 14210 West State Route Four, Stockton, California. <br /> Advanced GeoEnvironmental,Inc. <br />