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UNION ICE COMPANY <br /> 425 N. Union Street, Stockton, California <br /> Final Remediction Ilan <br /> I.0 snE IHSTORY <br /> In August 1989, it was discovered that 4 underground tanks were located at the Union <br /> Ice Facility at 425 N. Union Street, in Stockton, California(see Plate 1). Tank#1 and <br /> Tank#2 were 10,000 gallon fuel tanks that had been filled with water by Union Ice <br /> sometime in the past. Tank#3 was a 500 gallon tank that contained both gasoline and <br /> fuel oil or diesel fuel in the past, and Tank#4 was a 250 gallon tank that contained <br /> waste oil. In September of 1989, these tanks were removed by "Semco" under permit <br /> and under the direction of the San Joaquin Environmental Health Department. <br /> All tanks were disposed of according to law(see permits). Soil samples were taken <br /> beneath all 4 tanks(results are in Figures). It was determined that Tanks#1 and#2 <br /> had not leaked. Tank#4, however, has Ieaked at some time in the past, or had been <br /> overfilled. A soil sample was taken approximately 5 feet below the bottom of Tank#4, <br /> and lab results show "none detected." Tank#3 had leaked, and in November of 1989, <br /> a proposal to excavate the contaminated soil from Tank#3 was submitted to the San <br /> Joaquin County Health Department. This proposal was accepted, and on January 18, <br /> 1990, the excavation was begun. The excavation was completed on January 24, 1990. <br /> Approximately 550 yards of soil was excavated, and stockpiled on site. <br /> 2.0 ANALYTICAL RESULTS <br /> Soil samples, taken at the direction of the San Joaquin County Environmental Health <br /> Department, indicate that only Iow levels of soils contamination still exist on site. No <br /> gasoline was detected in the soils in the floor of the excavation, or in the walls of the <br /> excavation. Oil and grease was detected in the south end of the floor and in the north <br /> wall of the excavation. We also found ethylbenzene at 57,ug/kg in the south floor <br /> sample(see sample results and a diagram of the soil sample location in Plate 2). <br /> On March 2, 1990, Tanks#1 and#2 were re-sampled, at the request of the San Joaquin <br /> County Health Department, by using a drill rig. Original "none detected" results were <br /> - - ---- <br /> --------...-----_......__..__..---------- ----------verified.by those analysis (see Plates-2-&-3).- <br /> -- ----- <br />