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m <br /> U. <br /> y � <br /> S <br /> D <br /> Z TECHNICAL WORK PLAN <br /> UNDERGROUND STORAGE TANK SITE REMEDIATION <br /> Color Spot Production Facility �; 3¢ <br /> . 5404 East Harney Lane DEC 8 1989 <br /> 4 Lodi, California <br /> ENVIRO-IN MENIAL hE,)LTH <br /> �a <br /> PERMIT/S RViCE;; <br /> i <br /> 1 <br /> 1 gpCKGROUND <br /> .; A 4,000-gallon underground storage tank (UST) used to store diesel <br /> fuel was removed from the Color Spot Lodi facility (the site), located at 5400 <br /> East Harney Lane, <br /> Lodi, California (Figure i site Location Map), on March 1, <br /> 1989 by Jim Thorpe Oil Company, Inc. The UST removal was observed and documented <br /> 4tl by Staal, Gardner & Dunne, Inc. (SGD), UnderPround Storave Tank Removal Color <br /> � `- s or Lodi Inc. , March 1989- <br /> I� porC and the southwestern comer of <br /> The soils surrounding the fill <br /> �? ed and smelled of diesel fuel. Field monitoring with <br /> ,`he UST were visibly stain <br /> a phatoiarization detector (PID) also indicated elevated total volatile petroleum <br /> rations. Soil samples collected after the UST was <br /> hydrocarbon (TPH) concent <br /> ~ xylene and TPH concentrations in excess <br /> removed exhibited ethylbenzene, total <br /> j of applicable regulatory action levels. As a result of the soil contamination, <br /> E_i <br /> SGD was retained by Color Spot, Inc. , to verify the existence of soil centamin- <br /> orlon, delineate the Lateral extenr, of contamination, and to evaluate adjacent <br /> Li dome-c. ic ground water wells for contaminants associated with diesel fuel. <br /> #_ SGD conducted a soil vapor surrey August 15, 1989 under San Joaquin <br /> Local Health District (SJLHD) permit 89-1853 (ccpy attached) and documented by <br /> SGD, Soil Va or 5tudv Cnlor S of Lodi Inc., October 1989. Results of the <br /> survey indicated that the diesel fuel contamination within the shallow subsurface <br /> (depth of 6 feet below ground surface) does not appear to have migrated laterally <br /> a significant distance beyond the rank excavation. The contamination appears <br /> w to be limited .:a the southwest c¢rhr of the excavation. The analytical results <br /> of the ground water samples collected by SGD from the domestic water wells at <br /> the site indicate that ground water does not contain hydrocarbon contamination <br /> above regulatory action levels. <br /> 1 <br /> ice. <br />