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PUBLIC HEALTH SERVICES <br /> ` SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer 9.. �A <br /> �f ROR <br /> 445 N. San Joaquin Street • P.O. Box 388 • Stockton, i� 3 <br /> (.209) 468-3420 �# <br /> L L <br /> ECKERT ENGINEERING CORP MAY V 2 1994 <br /> P 0 BOX 924 <br /> LLL MANTECA CA 95336 <br /> RE: ECKERT COLD STORAGE CO <br /> FORMER UNDERGROUND STORAGE TANK <br /> 757 MOFFAT BL; MANTECA <br /> Your consultant, Mr. Bill Fox of WHF, Inc. , contacted me recently regarding <br /> San Joaquin County Public Health services, Environmental Health Division's <br /> (PHS/EHD) evaluation of the above referenced underground storage tank (UST) <br /> removal. The following chronology of the file will clarify to you why the <br /> farmer UST site cannot be closed without further investigation. <br /> 20 March 1987 - PHS/EHD received a statement and a tank receipt <br /> indicating that the 500 gallon gasoline UST (Tank #4) had been removed <br /> in July 1986 by employees of Eckert Cold Storage Co. <br /> 1 April 1987 - A site inspection was made by a representative of PHS/EHD <br /> to witness sampling from the 1986 tank removal pit. Obvious soil <br /> contamination was observed and noted by the PHS/EHD inspector. <br /> 10 June 1987 - Analytical results received from the 1 April 1987 <br /> sampling event. The following soil contamination was documented: <br /> sample #1 P-42383 EPA Method 8015 <br /> 47,200 ppb = 47.2 ppm Benzene (B) <br /> 134,500 ppb = 143.5 ppm Toluene (T) <br /> 132,229 ppb = 132.229 ppm Xylene (X) <br /> 331 ppb = .331 ppm Ethylene dibromide (EDB) <br /> 2,005 ppm Total Petroleum Hydrocarbons, Gasoline (TPH-G) <br /> 10,000 ppb = 10 ppm Total Petroleum Hydrocarbons, Diesel (TPH-D) <br /> Sample #1 P-42384 EPA Method 8015 <br /> 41 ppm Benzene <br /> 375 ppm .Toluene <br /> 533 ppm Xylene <br /> 5,800 ppm TPH-G <br /> 46 ppm TPH-D <br /> Sample #1 16' (Water) (P-42384) EPA Method 602/601 <br /> 973 ppb 1,2-Dichloroethane (DCA) <br /> 127,000 ppb Toluene <br /> 24,700 ppb Ethyl Benzene <br /> 54,000 ppb Benzene <br /> 117,000 ppb Xylene <br /> 13 July 1987 - Doug Wilson telephoned Mr. Joe Martin and explained that <br /> further investigative work would be required to determine the extent of <br /> the contamination. During the conversation, Mr. Martin was also advised <br /> to sample the on-site domestic well to verify compliance. <br /> 18 August 1987 - Mr. Martin contacted again to schedule sampling of the <br /> domestic/production well. <br /> L <br /> LA 1?kisinn u1'San,juayuin Cunotr Health Care ticniceN <br />