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PUBLIC HEALTH SERVICES <br /> G <br /> SAN JOkQLI\ COLV-n A <br /> 10GI KHA\NA M D M P H <br /> Hearn Officer e, P <br /> P O Sox 2009 • (1601 East Hazelton Avenue) • Stockton C-ildottua 95201 q P O `a <br /> (209) 468-3400 <br /> JOHN MARGOWSKI '� U <br /> WICKLAND OIL COMPANY <br /> P O BOX 13648 JUN 1 2 1992 <br /> SACRAMENTO CA 95853-4648 <br /> Re Former Regal Station #604 S= CODE: 1081 <br /> 1448 North EI Dorado Street <br /> Stockton CA 95202 <br /> San Joaquin County Public Health Services Environmental Health Division (PHS/EHD) <br /> on June 2, 1992 conducted a site inspection, dunng which confirmation soil sampling was <br /> further evaluated PHS/EHD comments will hopefully will clarify recommended <br /> confirmation sampling <br /> The PHS/EHD letter dated May 4, 1992 stated that the two soil borings proposed were <br /> • insufficient and that additional confirmation sampling would be necessary to verify that <br /> documented soil contamination has been remediated by vapor extraction The two <br /> confirmation soil boring proposed would investigate contamination associated with the <br /> former pump island #3, P-3 (swarm) and PL4-EX3PA (incorrectly referred to in the May <br /> 1992 letter as EX1PA at 20 feet) and contamination associated with SB2 and MW5. <br /> PHS/EHD has considered documented soil contamination The following areas of <br /> concern have been resolved and additional confirmation sampling will not be necessary: <br /> MW1 at 25 and 30 feet, <br /> EX5 at 26 feet, and <br /> SB1 at 15 and 30 feet <br /> The contamination associated with the former pump island #1 will require further <br /> investigation to confirm that the following documented contamination has been <br /> remediated <br /> P1 EXC1B at 13 feet, <br /> P1 EX1PB at 20 feet, and <br /> P1 at 30 and 40 feet <br /> i <br /> A Divimon of pan Joaquin(ounry Health(.rL xroLes 10, <br />