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PUBLIC "'HEALTH SERV*rCES Ra no <br /> SAN JOAQUIN COUNTY ' <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer .. a;P <br /> �lkoa <br /> 445 N. San Joaquin Street * P.O. Box 388 • Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> CO <br /> DWAYNE MILNES lJ <br /> CITY MANAGER <br /> CITY OF STOCKTON <br /> 425 NORTH ELDORADO <br /> STOCKTON CA 95202 1 1994' <br /> RE: City of Stockton Market Street Parking Structure SITE CODE: 2339 <br /> 134 South Sutter Street <br /> Stockton CA 95202 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has recently reviewed information regarding the former underground storage tanks <br /> (UST) which were located on this site and removed prior to the construction of the <br /> parking structure. PHS/EHD also received the following complete reports from <br /> Kleinfelder: <br /> "Soil Sampling Results" dated October 19, 1988 <br /> "Soil Sampling Results" dated November 7, 1988; <br /> "Waste Oil-Water Separator Sump" dated November 7, 1988; <br /> "Sampling Results" dated March 8, 1989; <br /> "Soil Sampling for Soil Excavation" dated March 9, 1989; <br /> "Soil Sampling Results" dated March 22, 1989; and a <br /> Fax from Petroleum Waste to the City of Stockton with pre-disposal information, <br /> dated March 27, 1989. <br /> PHS/EHD has prepared the following summary to explain why additional investigation is <br /> being requested and why the site is being placed into the Local Oversight Program (See <br /> attached Notice of Reimbursement and Site Letter). <br /> Tank #1 and #2 <br /> On October 6, 1988, two 1,000 gallon USTs were removed, and soil samples were <br /> collected without PHS/EHD inspection. There is no record of the depth at which these <br /> soil samples were collected. No contamination was detected in the two samples collected <br /> (#18691 and #18692); however, the detection limits used were elevated. Current <br /> detection limits for soil are 0.005 parts per million (ppm) for benzene, toluene, <br /> ethylbenzene, xylene and 1.0 ppm for total petroleum hydrocarbons (TPH). The <br /> detection limits which were used for analysis were 0.05 ppm B, 0.1 ppm T and X, 0.2 <br /> ppm E, and 10 ppm TPH. <br /> A !)i%ision of San Joaquin County Health Care Services <br />