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Stockton Promenade—N. Edison3ireet USTs& Utility Corridors • Page 9 <br /> Underground Storage Tank Removal Report June 8,2009 <br /> WKA No.7345.09 <br /> during the day of field activities. Qualitative grab groundwater samples were collected from <br /> ' each boring location to evaluate shallow groundwater conditions beneath the site. <br /> ' All sampling equipment was decontaminated with a solution of AlconoxTm and water, and rinsed <br /> in clean, distilled water prior to collecting each sample. Upon completion of sampling activities, <br /> each boring was backfilled with a neat cement grout-bentonite slurry, in accordance with San <br /> Joaquin County Environmental Health Department permit guidelines (Appendix E). Boring logs <br /> are included in Appendix F. <br /> It should be noted that further excavation and confirmation soil sampling of underground utility <br /> corridors across the former UST area for the Stockton Promenade construction project has <br /> recently been completed and will be reported to the RWQCB separately from this report. <br /> ' <br /> 5.0 SAMPLE ANALYSES <br /> ' Selected soil and groundwater samples were submitted with chain-of-custody documentation to <br /> Kiff Analytical Laboratories (Kiff), Davis, California. Kiff is certified by the California <br /> Environmental Protection Agency(Cal-EPA) for the applied test methods. <br /> Selected soil samples were submitted for the following analyses: <br /> Analyses UST Area Test Pits Borings <br /> Total Petroleum Hydrocarbons-as-Diesel (TPHd)and Total Petroleum X X X <br /> Hydrocarbons-as-Motor Oil (TPHmo)using EPA Method 8015M <br /> Volatile Organic Compounds(VOCs)and Total Petroleum X X X <br /> Hydrocarbons-as-gasoline(TPHg)using EPA Method 8260B <br /> Total Cadmium,Chromium,Lead,Nickel and Zinc(LUFT Metals) X X <br /> using EPA Method 6010B <br /> Semi-Volatile Organic Compounds(SVOCs)using EPA Method 8270C X <br /> ' Polychlorinated Biphenyls(PCBs)using Gas Chromatography by EPA X <br /> Method 8082 <br /> ' Tables 1 through 3 summarize the soil and grab groundwater sample analytical results. Copies <br /> of the laboratory data sheets for soil analytical results from this assessment are included in <br /> Attachment F. <br />