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�w <br /> PUBLIC hEALTH SERVICES <br /> PO U fy <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION ; . :< <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer - <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 Stockton, CA(7(l IFOW��P <br /> 2091468-3420 <br /> CHEVRON PRODUCTS CO <br /> BRETT HUNTER MAILED MAY 101996 <br /> P O BOX 5004 <br /> SAN RAMON CA 94583--0804 <br /> RE: 236 N. Ham Lane (SS #9-4183) SITE CODE: 1333 <br /> Lodi, Ca. <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed analytical results for samples collected at the above <br /> referenced site. The samples collected were associated with the removal/permanent <br /> closure of four UST (underground storage tanks) and their system piping. <br /> Due to high soil contaminant concentrations in the area of the waste oil tank, <br /> removal/overexcavation of additional soil was performed. Confirmation sampling in <br /> the final excavation indicates no further soil remediation is warranted. <br /> With the provisions that the information provided to this agency is accurate and <br /> representative of existing conditions, PHSIEHD has determined that no additional soil <br /> remediation is warranted and backfilling of the areas remediated can be completed. <br /> Site closure can not be granted at this time due to concentrations of TCE <br /> (tetrachloroethene) and MTBE (Methyl t-Butyl Ether) evidenced in groundwater <br /> samples collected from on site monitoring wells. Quarterly groundwater <br /> monitoring/sampling is required to further evaluate residual concentrations. <br /> If you have any further questions regarding this matter, please contact Harlin Knoll at <br /> (209) 468-3442. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> 40� <br /> Harlin Knoll, Senior REHS Margaret Lagorio, REHS <br /> Site Mitigation Unit Lead Senior <br /> CC' Kenneth Paige, Sr., 236 N. Ham Lane, Lodi, CA <br /> A Division of San Joaquin County Health Care Services <br />