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PUBLIC-HEALTH SERVICES <br /> SAN JOAQUIN COUNTY 2` <br /> ENVIRONMENTAL HEALTH DMSION .: <br /> Karen Furst, M.D., M.P.H., Health Officer - P <br /> 304.East Weber Avenue, Third Floor.- Stockton, CA 95-202 ® <br /> 209/468-3420 bc <br /> CORRELL PROPERTIES PTTP - Jiffy Lube/Broadbase, Inc <br /> 285 INDUSTRIAL WAY Don Fowler <br /> WOODLAND - CA '95776 3990 West Yosemite Road <br /> Lathrop, CA 95330, <br /> t <br /> DEC 0 2 1999 <br /> Re: JIFFY LUBE Site Code: 2332 <br /> 1130 N MAIN ST <br /> MANTECA, CA 95336 r <br /> San Joaquin County Public,Health Services(PHS/EHD) has received and reviewed the <br /> f <br /> Revised Workplan for Over-excavation Activities dated November 8, 1999 prepared by <br /> URSA Engineering (ERSA), the consultant retained by Jiffy Lube. This work plan is <br /> not approved <br /> at this time. Since groundwater,in this area is about 15 feet below surface <br /> grade (bsg), a soil and groundwater investigation'is required. <br /> According to Appendix B of the Tri-Regional Recommendations,the lateral and <br /> vertical extent of the contamination in both soil and groundwater should first be <br /> defined before conducting corrective action. In a telephone conversation on <br /> November 20, 1999, ERSA expressed that the proposed over-excavation is not <br /> intended as a corrective action, but as a mean to obtain soil samples for laboratory <br /> analyses. Over-excavation is not typically used and recognized as a method for <br /> I <br /> conducting a.groundwater investigation. PHS/EHD recommendsusing technologies <br /> other than over-excavation to collect both,soil and groundwater samples. A <br /> preliminary investigation work plan that will define the vertical and horizontal extent <br /> of the contamination should be submitted no,later than December.22, 1999. <br /> If you have any questions, please contact Jeffrey Wong at (209).468-0335. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> effre on REHS <br /> Mar a�tlagorio, R HS <br /> J Y g� � g <br /> LOP/Site Mitigation Unit IV Supervisor <br /> c: CVRWQBC - Marty Hartzell. <br /> A Division of San Joaquin County Health Care Services <br />