Laserfiche WebLink
` Subsurface Investigation and Page 4 <br /> Remedial Excavation of Hydrocarbon-affected Soil <br /> Proposed Cintra Park Phase II Development, Tract 2705, Tracy, California <br /> August 8, 1997 1 CTE Job No. 20-0445 <br /> 3.0 S MMARY OF RECENT ACTIVITIES <br /> r <br /> 3.1 Underground Storage Tank Removal Activities <br /> Two underground fuel storage tanks (USTs) were excavated and removed from the site on June <br /> 2, 1997 by Jim Thorpe Oil, Inc. The two, steel USTs, of approximately 300- and 800-gallons <br /> -- capacity, were reportedly used to store leaded and unleaded gasoline from the late 1960s until <br /> approximately 1992. The USTs were transported, using appropriate procedures, to the Schnitzer <br /> Steel Products TSD facility in Rancho Cordova, California for disposal. Tank rinsate and residual <br /> r <br /> fuel were transported, using appropriate procedures, to the Americlean, Inc. facility in Silver <br /> i ; <br /> Springs, Nevada for disposal. Copies of the UST removal permits, Uniform Hazardous Waste <br /> x <br /> Manifests, and other manifests are presented in Appendix B. Soil displaced during the excavation <br /> and removal of the tanks was replaced back into the UST excavations. <br /> r` <br /> Two soil samples (TK1 and TK2) were collected, at depths of approximately eight and 8.5 fbg, <br /> r <br /> from the open excavations below the former UST locations. Collected soil samples were analyzed <br /> at GeoAnalytical Laboratories, Inc. for: Total Petroleum Hydrocarbons-Gas and -Diesel (TPH-G <br /> and -D), benzene, toluene, ethylbenzene, and total xylenes (BTEX), and lead. Detected TPH-G <br /> ` concentrations were 8,100 and 8,200 mg/kg. TPH-D and benzene were not detected at the <br /> laboratory detection limits used. Toluene concentrations were 380,000 and 110,000 µg/kg, <br /> ethylbenzene concentrations were 140,000 and 230,000 µg/kg,and total xylenes concentrations were <br /> �a <br /> CAPROJECTS12 04451ENRP02.WPD <br />