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CLOSURE CHRONOLOGY FOR <br /> DELTA AIR STRIP 159 '1 TRACY BLVD-Caro[ Oz-64-99 <br /> May 16,19901 Two USTs removed; (1) 10,000 gal. aviation gasoline and (1)550 Gal. <br /> gasoline tank. Greyish soil but no odor. s <br /> June a", 1990 Soil sample results below tank#1 evidenced BEX contaminants. Water <br /> sample result evidenced BTX contaminants. <br /> June 27 1990 Prop 65 and UAR filed. <br /> Feb. 9, 1999 Site entered LOP. NOR sent to RP. <br /> May 6, 1999 Site investigation conducted (three borings 15 to 20 feet deep). All sample <br /> results were ND except for TBA at 83 ppb in water. <br /> F <br /> 1 <br />