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DISALVO TRUCKING <br /> 1444 LATHROP ROAD <br /> LATHROP CA 95330 <br /> SITE CODE: 1638 <br /> PROGRAM ELEMENT: 3526 <br /> 08/11/93 Seven Tanks removed today. <br /> 10/29/93 Sample TK4E at 13.5 feet is 350 ppm motor oil and 80 ppm diesel. <br /> 05/06/94 Over excavation conducted today. Three confirmation samples taken. <br /> 06/21/94 Laboratory results from over excavation confirmation samples are bottom sample <br /> at 15.5 feet is .006 ppm Toluene and .010 ppm Xylene. Sidewall samples are non- <br /> detect. <br /> 07/28/94 PHS/EHD letter to DiSalvo stating that a groundwater investigation is required due <br /> to contamination at 15 feet and high water at 10 feet. <br /> 06/02/95 Installation of MW-I completed today. <br /> 06/08/95 Analytical sampling of MW-1 for BTEX:and Diesel conducted today. Result of <br /> sample analysis is 400 ppb diesel. <br /> 08/14/95 Completed installation of groundwater extraction system and began removal of <br /> groundwater. <br /> 08/16/95 MW-1 sampled for analytical after extraction of approximately 3700 gallons of <br /> groundwater. Result of this analytical sample is 480 ppb diesel. <br /> 08/22/95 MW-1 sampled for analytical after extraction of approximately 15,00 gallon of <br /> groundwater. Analytical results of this sample is non detectable. <br /> 09/06/95 Analytical result of Baker tank water sampled today is 130 ppb TPH-diesel. <br /> 09/25/95 30 day confirmatory sampling of MW-1 result is non-detect. <br /> 10/30/95 MW-1 destroyed today. <br /> I0/04/95 Date of closure report submitted by Condor Earth Technologies } <br /> 11/17/95 Baker tank water sampled after filtration through granular activated carbon <br /> canister. Result of analytical sample is non detectable for diesel. <br /> 11/22/95 Baker tank discharged to storm water pond. <br /> 12/04/95 Site closure and certification issued by PHS/EHD <br />