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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY c. <br /> a: <br /> JOGI KHANNA M.D.M.P H. <br /> Health Officer <br /> P.O. Box 2009 a (1601 Eu[Hazelton Avenue) <br /> • Stockton, Califomia 95201 tf Foa <br /> (209) 468-3400 <br /> DAN KIRK <br /> SHELL OIL COMPANYvQ 1 71991 <br /> P 0 BOX 4023 <br /> CONCORD CA 94529 <br /> SITE CODE: 1883 <br /> RE: Shell Service Station <br /> (WIC No. 204'7524'4404) <br /> 3011 W. Benjamin Holt Dr. <br /> Stockton CA 95207 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has received <br /> correspondence dated December 31, 1992 from Aegis Environmental, Inc. and has the following <br /> comments. <br /> PHS/EHD does not concur with your findings that the site qualifies for closure. A satisfactory <br /> investigation has not been completed around the existing underground tank (UST) pit area. The closest <br /> boring/monitoring well was placed approximately 30 feet from the tank pit. Confirmed gradient or <br /> water sample results are not available since the monitoring wells were destroyed after only one <br /> measurement and sample collection. PHS/EHD requires a subsurface investigation workplan that <br /> accurately investigates the soil and groundwater at this site. The previously investigated proposed tank <br /> area evidenced soil contamination. This area needs to be included in the investigation. Include in your <br /> soil and groundwater analysis EPA tests for Total and Soluble Lead and Ethylene dibromide (EDB). <br /> You are hereby directed to submit a workplan or"Preliminary Investigation and Evaluation Report" with <br /> a proposal to investigate subsurface conditions in the soil and groundwater at this site within 45 days of <br /> the date of this letter to PHS/EHD. <br /> Failure to comply with PHS/EHD directives may affect eligibility for "Underground Storage Tank Cleanup <br /> Fund" reimbursement. <br /> Please contact Michael Infuma, Senior REHS, at (209) 468-3454. <br /> JogiKhannaM-90. <br /> P.H. <br /> Health Officer <br /> a 'e A. Cotulla, RENS, Program Manager <br /> � onmental Health Division <br /> V LAC/Ml:lb <br /> c: David L. Poulsen, Aegis Envirotmiental <br /> c: Elizabeth Thayer, CVRWQCB <br /> A Division of San Joaquin Counry HcWth Care Semces <br />