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�f <br /> Port of Stockton Gr ter 2- <br /> 018 September 1987 <br /> pipeline which formerly carried jet fuel to Southern Pacific from docks <br /> 12 and 13 is now used to carry 1 32% solution of urea ammonium nitrate. <br /> The chemical is delivered by s ip to the port and transported to the <br /> tanks at Trans-California Terminal by pipeline. The leaking lines <br /> uncovered during the excavation for the water line parallel the usable <br /> 12 inch line at the excavation. They probably originate at the docks to <br /> the north. Distance from the terminal area to the channel is roughly <br /> 2, 000 feet. My preliminary con lusion is that soil and possibly ground <br /> water contamination due to prod ct leaking from this line is extensive. <br /> This is based on the fact th t the only uncovered section of this <br /> pipeline we have investigated was leaking fuel, and the length of the <br /> line is 2, 000 feet or more. Further investigation is definitely <br /> warranted. <br /> STOCKTON PETROLEUM <br /> SJLHD received a complaint regarding contamination uncovered during an <br /> excavation at this site. The complaint was investigated, but no soil or <br /> ground water contamination was confirmed. A report by Woodward-Clyde <br /> Consultants indicates that contamination here was confirmed, but there <br /> is no documentation in the report to back this up. <br /> TRANS-CALIFORNIA TERMINALS <br /> This terminal receives 32% urea ammonium nitrate by pipeline from docks <br /> 12 and 13 . No pollution from t is operation has been documented. <br /> TIME OIL <br /> Time Oil has a system of five extraction wells in place. Ground water <br /> sampling conducted in April 1985 showed that the water was contaminated <br /> with benzene, toluene, and xylene. Benzene levels ranged from 5600 ppb <br /> to 26, 000 ppb.. These wells are being pumped to an oil-water separator <br /> at the present time. The water portion of the separator is emptied to <br /> the sanitary sewer after sampling and analysis. Water analysis from <br /> this year shows that the water discharged from the separator contains <br /> benzene, toluene, and xylene in concentrations comparable to the 1985 <br /> analysis results. <br /> soil contamination at the site was confirmed in January of 1987. soil <br /> samples were taken in conjunction with storage tank construction at this <br /> site. Five soil samples taken from the proposed tank location showed <br /> levels of gasoline in soil rang ng from 200 to 3600 ppm. Concentrations <br /> of diesel fuel were found in addition to this. Soil with levels of <br /> gasoline over 1000 ppm has been classified as hazardous waste in the <br /> past. <br /> Time Oil is the only business in this contaminated azea which initiated <br /> action on its own to identify or mitigate the contamination problem <br /> before an area-wide contaminat'on study was initiated by the Port and <br /> several of its tenants. . <br /> TESORO PETROLEUM <br /> On 1 April 1987 an underground tank was removed from the Tesoro <br /> Petroleum property. Ground water was sampled and one analysis revealed <br /> that gasoline was present in the water at 12 . 3 mg/L, and diesel fuel was <br />