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0 • <br /> USTs, removed in 1987, some definition of lateral extent of contamination, identification of <br /> i <br /> hydro carbon contaminants (note no MTBE or fuel Oxygenates DIPE, ETBE nor TA was <br /> detected), locating a "shallow water body", and a request by Rafael L Gallardo Registered <br /> Geologist, that PHS/EHD consider granting site closure <br /> The local oversight program is administered by the PHSIEHD The current contact is <br /> Jeffrey Wong, REHS, at LOP/Site Mitigation Unit IV 304 East Weber Ave , 3`d Floor, <br /> Stockton, CA 95202 In cases where groundwater contamination exists or is threatened, <br /> ' final acceptance by the Central Valley Regional Water Quality Control Board (CVRWQCB) <br /> of applied mitigation is required The CVRWQCB contact is Marty Harzell, at USU Unit, <br /> 3443 Routier Road, Sacramento, California 95827-3098 Partial recovery of cleanup costs <br /> is possible through the State Water Resources Control Board (UST Fund) Reasonable <br /> supportive records must be presented to the UST Fund manager to recover allowed costs <br /> r <br /> 12 Site Contamination <br /> ' The Appendix E, "LIMITED SOIL AND GROUNDWATER INVESTIGATION REPORT for <br /> 19256 N HIGHWAY 99, ACAMPO, CALIFORNIA' reflecting findings and the deductions of <br /> Rafael L Gallardo, R G No 6834 was completed May 24, 1999 A limited definition of the <br /> remaining petroleum hydrocarbon contamination may be derived from the report Pollutant <br /> levels up to 30,000 mg/kg of diesel range and 18,000 mg/kg of kerosene range petroleum <br /> ' hydrocarbon product were reported in the vicinity of the former 20,000 GA USTs Borings <br /> B-3 and B-5 were clean This would be reasonable if the source were close to B-1 and the <br /> groundwater surface gradient was to the NNE A graphical representation of the findings <br /> may be found in the Figure 4, "Graphical Lithological Summary' Higher concentrations of <br /> ' the potential floating diesel product were found in B-1 and B-2 at a similar depth as the <br /> "shallow water body" detected in B-4 which had a small amount of diesel (5,900 pg/L) and <br /> kerosene (4,300 pg/L) detected <br /> The contaminations limits south of B-4 have not been completely defined <br /> Possible early leaking UST's and piping have been removed <br /> 10 1 <br /> 1-2 <br />