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analyzed for MTBE and other oxygenates and found to be below detection levels. <br /> Conclusions <br /> The results of the soil sample analysis prove that the contamination of this site continues below <br /> the historic low groundwater table of 55 feet below the ground surface. The vertical depth of the <br /> plume is more than 100 feet in low concentrations, and 55 feet in high concentrations. The <br /> horizontal extent of the contamination plume has not been reached, and may continue under Center <br /> Street to the east. <br /> Recommendations <br /> The present work plan should be carried to completion when the owner' s funds become available. <br /> The existing monitoring well and the new monitoring wells should be surveyed for elevation to <br /> the City of Stockton Datum and a groundwater gradient calculated. <br /> Please contact this office if you have any question on this interim report. <br /> Respectfully submitted, <br /> Fo bi gm ing� <br /> / �J <br /> E <br /> P. <br /> rvm en g, PE <br /> 3 <br />