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Quilt Stop Station No 039 February 17, 1999 <br /> Stockton,California _ _ Tank Closure Report <br /> at a concentration of 14,800 ppm Only low levels of BTEX and MTBE were reported at <br /> (1 0 ppm toluene, 0 018 ppm xylenes, and 0 18 ppm MTBE) <br /> Excavated Soil: Analytical results of soil samples collected from the excavated soil <br /> stockpiles indicated TPHg (60 to 63 ppm), BTEX (0 044 to 0 069 ppm toluene, 0 025 to <br /> 0 16 ppm ethylbenzene, and 0 74 to 1 6 ppm xylenes), MTBE (0 14 to 0 65 ppm), and lead <br /> (0 64 and 0 65 ppm) <br /> Replacement UST Excavation Soil: Analytical results of soil samples collected <br /> from the excavated soil used to backfill the former UST excavation indicated no detectable <br /> concentrations of TPHg, BTEX, or MTBE <br /> Soil Disposal <br /> On November 21 and 25, and December 4, 1998, approximately 672 tons of soil were <br /> transported under Non-Hazardous Waste Manifests by Den Beste Transportation of <br /> Windsor, California to the Forward Landfill facility in Manteca, California for <br /> bioremediation and recycling Copies of the Non-Hazardous Waste Manifests are included <br /> in Attachment B <br /> Recommendations <br /> We recommend a copy of this report be forwarded to <br /> Ms Letitia Briggs <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 E Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Limitations <br /> The inethods and procedures utilized for this work are the generally-accepted standards of <br /> the practice of geology and environmental science in California at the time of the <br /> investigation This site investigation was conducted solely for the purpose of evaluz, -C. soil <br /> conditions adjacent to former UST locations with respect to gasoline-related hydrocarbons <br /> No soil engineering or geotechnical references are implied nor should any such references be <br /> inferred The evaluation of geological conditions at the site, for purposes of this <br /> investigation, was made utilizing a limited number of observation points Subsurface <br /> conditions may vary some distance away from the available observation points This report <br /> is the property of Horizon Environmental Inc and Quik Stop Markets Inc for their use and <br /> distribution <br /> 7039-11 ter 4 HORIZON ENVIRONMENTAL INC <br />