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SER - ICESPUBL HEALTH ; �. �• �� � <br /> SAN JOAQUIN COUNTY a ?{ <br /> H: <br /> kI <br /> JOGI KHANNA M.1}.,M.P.H. :.. ::• } <br /> Heakh Officer <br /> ., :P <br /> • Stockton,California 95201 a F R <br /> P.O. Box 2009 0 (160I East Hazelton Avenue) ' <br /> (209)468-3400 <br /> I <br /> i <br /> JUAN QUIJANO <br /> TRI VALLEY GROWERS ASSOCIATION <br /> ENVIRONMENTAL SERVICES MAY 0 5 1992 <br /> P0BOX 1211 <br /> MODESTO CA 95353 <br /> Re: Tri Valley Plant T Site Code: 1920 <br /> 26200 North Galt Road <br /> Thornton CA 95686 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has completed <br /> review of the "1992 First Quarter Groundwater Monitoring Activities/Remediation System Performance <br /> Report" which was dated April 8, 1992 and prepared by RESNA. PHSIEHD has the following comments <br /> for your consideration. <br /> Thank you for providing graphic representation of the remediation system influent analytical results. <br /> Graphic representation of these results will aid in the evaluation of the system's effectiveness. <br /> The request to sample monitoring well MW-3 biannually is granted. However, the request to sarhple <br /> monitoring well MW-6 biannually is denied. As outlined in the PHSIEHD letter dated November 15, <br /> .1991, the proximity of the neighboring domestic well prohibits a reduction in the frequency of sampling <br /> MW-6. Quarterly sampling of MW-1, MW-6 and the remediation influent/effluent should continue. <br /> Biannual sampling of MW-2, MW-3, and MW-5 should be initiated. <br /> % ; <br /> The request to discontinue oil and grease analysis of MW-1 is granted. Oil and grease contamination has <br /> not been detected since June 20, 1990. It may be necessary to include oil and grease analysis in <br /> groundwater confirmation sampling prior to closure. <br /> If you have any questions or to schedule a quarterly site inspection in June, please contact MaryMeays, <br /> REHS, of my staff at (209) 468-0337. <br /> Jogi Khanna, M.D., M.P.H. <br /> Health Of! <br /> C• <br /> uric A. CotulIa, REHS, Program Manager <br /> Environmental HealthDivision <br /> LAGMMAb <br /> c: Elizabeth Thayer, CVRWQCB <br /> c: Bill Channell, RESNA <br /> A Division of San Joaquin County Health Care Servicc8 <br /> I <br />