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k <br /> JA <br /> Working To Restore Nature <br /> December 8, 1992 <br /> Fire Engine Company No 2, Stockton, California <br /> A vapor-extraction feasibility test was performed at the site on September 28, 1992 using <br /> vapor-extraction wells VW-1 through VW-3 A report outlining the results of this test is <br /> near completion <br /> SUMMARY AND RECOMMENDATIONS <br /> Residual gasoline hydrocarbons were detected in soil samples collected from borings B-9, <br /> B-10, and B-13 The ground-water flow direction and gradient were generally consistent <br /> with the those evaluated during previous events Dissolved gasoline hydrocarbons were <br /> detected in samples from wells MW-1 through MW-4 and well RW-1, however, dissolved <br /> diesel hydrocarbons were not detected during this sampling event Dissolved concentrations <br /> of benzene were above maximum contaminant levels The next sampling event has been <br /> scheduled for January 1993 <br /> We recommend forwarding signed copies of this report to Ms Linda Turkatte of the San <br /> Joaquin County Public Health Services, Environmental Health Division, P O Box 2009, <br /> Stockton, California 95201, and Mr Gordon Boggs of the California Regional Water Quality <br /> Control Board, Central Valley Region, 3443 Routier Road, Sacramento California 95827- <br /> 3098 <br /> 1106iese <br /> 38009-a 4 <br />