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t <br /> SERVI S <br /> PUBLIC H%I�ALTH <br /> • ,E�r oG <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officex - � 4,:y, <br /> Third Floor • Stockton, CA 95202F,o R <br /> 304 East Weber Avenue, 1. <br /> nn <br /> 2091468-3420 <br /> OCT a 11997 <br /> CONTINENTAL GRAIN COMPANY <br /> 1805 HARBOR ST <br /> STOCKTON CA 95203 <br /> RE: CONTINENTAL GRAIN COMPANY SITE CODE: 1132 <br /> 1805 HARBOR ST <br /> STOCKTON CA 95203 <br /> As a result of reviewing the preliminary site assessment workplan submitted by Smith <br /> Environmental Technologies INC submitted on September 10, 1997 and historical site specific <br /> data which confirms the existence of petroleum products in the subsurface environment at the <br /> above referenced site, San Joaquin County Public Health Services Environmental Health Division <br /> (PHSIEHD) provides the following comments and directives: <br /> 1. Soil and ground water should be analyzed for ether and alcohol using EPA method 8260 <br /> (Specifically, Tertiary Butanol (TB), ,MTBE, Di-isopropyl ether (DIPE), and Tertiary Amyl <br /> Methyl Ether(TAME)). <br /> 2. Soil samples must be taken, from the bore holes, at five foot intervals or each time that the <br /> soil lithology changes. <br /> 3. If soil samples obtained at 30 feet below grade appear contaminated boring and sampling <br /> should be continued until the vertical extent of the contamination is defined. <br /> 4. The investigation proposal that you have submitted is limited such that the lateral and vertical <br /> extent of the contamination may not be determined. Further assessment may be necessary. <br /> Once field activities are completed and prior to submittal of the soil samples to the laboratory, <br /> PHSIEHD must be contacted in order to discuss which soil samples will undergo analysis. The <br /> summary report should include a table of all soil and ground water sample results obtained from <br /> the site and any recommendations for further investigation and/or remediation. <br /> Should you have questions regarding this.correspondence please contact Bruce Askanas at(209) <br /> 468-0331. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Bruce Askanas, Sr. REHS Margaret L gorio, Supervising REHS <br /> Site Mitigation Unit Site Mitigation Unit <br /> A Division of San Joaquin County Health Care Services <br />