Laserfiche WebLink
-- THOM <br /> ENVIRONMENTAL <br /> A IG Comi l'a ry <br /> November 16, 1989 <br /> Mr. Myron Beekman <br /> Silgan Container Corportion <br /> 3800 W. Alameda, Suite 900 <br /> Burbank, CA 91505 <br /> SUBJECT: Proposal for Phase II Site Characterization at Silgan Container <br /> Corporation, 1815 Navy Drive, Stockton, California <br /> Proposal Number Y89-3-199 <br /> Dear Mr. Beekman: <br /> As requested by Mr. Edward Stetson, the following document presents Thorne <br /> Environmental's proposal to further characterize the Silgan Container Corportion site at <br /> 1815 Navy Drive, Stockton, California. <br /> PROJECT UNDERSTANDING <br /> American Environmental Management Corporation (AEMC) excavated and removed a <br /> 3,500 gallon concrete underground storage tank in October, 1986. The tank had <br /> reportedly been used prior to 1983 by the facilities previous owner Tillie Lewis Foods <br /> to store mop and waste waters. It was suspected that the tank may have contained <br /> solvents such as trichlorethylene, tetrachloroethylene, ethylbenzene, and paint thinners <br /> along with paint, motor oil, detergents, and hydrochloric acid. Two samples collected <br /> at a depth of 12 feet below grade beneath the ends of the 25 foot by 10 foot tank were <br /> analyzed at Eureka Laboratories, Inc. for the presence of halogenated volatiale organics <br /> and aromatic volatile organics using EPA methods 8010 and 8020, respectively. <br /> Concentrations of trichloroethylene, tetrachloroethylene, ethylbenzene, total xylenes, and <br /> trans- 1,2 dichloroethylene were detected in these soil samples. Subsequently, AEMC <br /> removed additional soil from the excavation and collected samples at a depth of <br /> approximately 18 feet below grade. These samples were similarly analyzed using EPA <br /> methods 8010 and 8020. Concentrations at this depth were higher than at 12 feet <br /> reaching a maximium of 430 ppm of total xylenes. Groundwater was noted as <br /> accumulating in the excavation at a depth of 18.5 feet below grade. <br /> California Geological, Inc. (GGI) conducted a Phase I soil and groundwater site <br /> characterization in July, 1987. Nine soil borings were advanced followed by three <br /> additional borings being completed as groundwater monitoring wells. Soil and water <br /> samples were analyzed as before for halogenated and aromatic volatile organics as well <br /> as for total petroleum hydrocarbons using EPA method 8015 modified for gasoline, <br /> diesel, kerosene, motor oil, paint thinner, MBAS (surfactants), and phosphates. Results <br /> 11/89 Y89-199 <br /> 1570 r�liforni,l lwentir, 5rritc• ZOt) " I1:11:c,rsfi(-lrl, c,rlilomia 93309 a (805) 326-0492 <br /> "Trc1011CW 1)), Dv!;il;n" <br />