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v <br /> H SER�ICESPUBLIC HEALT <br /> SAN JOAQUIN COUNTY <br /> JOG[KHANNA N1D..1f.P.H <br /> Heath Officer <br /> P.O. Bax 2009 • (1601 East Hazelton Avenue) <br /> • Stockton, California 95201 4{r F O <br /> (209)468.3400 <br /> NOV 0 5 1991 ,- r <br /> JACK BRASTAD <br /> SHELL OIL COMPANY <br /> P O BOX 4023 <br /> CONCORD CA 94524 <br /> RE: Hammer Lane Shell IN REPLY REFER TO SITE CODE: 1660 <br /> 7910 Lower Sacramento Road <br /> Stockton, CA 95210 <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EHD) has reviewed the Delta Environmental letter with <br /> enclosures dated August 29, 1991 and the Third Quarter 1991 <br /> Monitoring Report dated September 27, 1991. <br /> Please provide information regarding the owners of 6106 East Eight <br /> Mile Road, Stockton, California. This is not an address of record <br /> with San Joaquin County Planning or the Assessors ' Offices. <br /> PHS/EHD has recently reviewed the October 15, 1990, Problem <br /> Assessment Report. The recommendation by Delta Environmental that <br /> the no-action alternative was appropriate for this site is <br /> unacceptable. The Leaching Potential Analysis in the Leaking <br /> Underground Fuel Tank (LUFT) Manual was used to evaluate the soil <br /> contamination at this site. Seasonal high depth to groundwater for <br /> the site is 45 feet (San Joaquin County Flood Control District <br /> Spring 1986/1983) . Soil samples which were contaminated were taken <br /> beneath the northernmost dispenser (T--3) and former underground <br /> storage tanks #3 (T-5 and T-6) and #4 (T-7 and T-8) . The results of <br /> these samples were used to complete the Leaching Potential Analysis <br /> Worksheet. The worksheet is used to evaluate if levels of <br /> contamination can be left in place without detriment to groundwater <br /> quality. The levels of residual contamination associated with the <br /> northernmost dispenser and underground storage tanks #3 and #4 <br /> failed the Leaching Potential Analysis. Copies are enclosed for <br /> your information. <br /> Please include proposed soil and groundwater remedial options in a <br /> Draft Final Remedial Plan (FRP) . The information requested in the <br /> A Division of San Joaquin County health Care Services 0 <br />