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ERM-West. Inc. <br /> Suite 200•2001 P Street•Sacramento, California 95814-5213• (916)444-WEST(444-9378) •Telefax (916)444-5313 <br /> January 3, 1991 <br /> U <br /> JAN 04 1991 <br /> Mr. Steven Schneider ENVIRONMENTAL HEALTH <br /> Public Health Services PERMIT/SERVICES <br /> San Joaquin County <br /> P.O. Box 2009 <br /> 10001 Hazelton Avenue <br /> Stockton, CA 95201 <br /> SUBJECT: Soil and Groundwater Investigation Report, <br /> Manna Pro Feed Mill, Stockton, California <br /> Dear Steve: <br /> As you know, during the period from November 8 through December 6, <br /> 1990, we performed extensive testing of the soil and groundwater in and <br /> around the current excavation at the Manna Pro Feed Mill in Stockton to <br /> evaluate the extent of the contamination at the site, determine the nature of <br /> the contamination, analyze its movement in the soil and groundwater, and <br /> formulate methods for its treatment. This report comprises the results of <br /> that investigation and our analysis and conclusions of the facts we <br /> gathered. The report also contains the results of our testing of the <br /> approximately 2500 cubic yards of stockpiled soil outside of the current <br /> excavation which had been previously removed. <br /> Soil and Groundwater Investigation <br /> Our testing of the soil and groundwater in the vicinity of the current <br /> excavation, the particulars of which are set out more fully in the enclosed <br /> report, revealed soil and groundwater contamination of varying degrees by <br /> petroleum hydrocarbon products. The soil contamination appears in a zone <br /> from roughly 35 to 45 feet below grade. We estimate there are at least 8500 <br /> cubic yards of hydrocarbon-contaminated soil in the ground at substantial <br /> concentrations. Figure 3-3 in the report depicts the estimated boundaries of <br /> the soil contamination. <br /> Ibi <br /> An affiliate of The Environmental Resources Management Group with offices worldwide tAi�© <br />