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11 May 2001 , <br /> AGE-NC Project No. 01-0810 <br /> Page 3,of 3 <br /> • Oxygenating fuel additives methyl tertiary butyl ether (MTBE), tertiarybutyl alcohol <br /> (TBA), di-isopropyl ether (RIPE), ethyl tertiary butyl ether (ETBE) and tertiary amyl <br /> methyl ether(TAME) in accordance with EPA.Method 8260m, <br /> • LUFT metals cadmium,.trivalent chromium, nickel, lead and zinc in accordance with <br /> EPA Methods 6010 and 7000, and for hexavalent chromium in accordance with EPA <br /> Method 7196. <br /> Polycholorinated-biphenyls(PCBs)in accordance with EPA Method 8080. <br /> RESULTS <br /> Petroleum hydrocarbons and semi-volatile compounds.was not detected in the stockpile or the <br /> UST excavation samples. The concentrations of metals detected in the samples appears to be at. <br /> background levels for the central Stockton area. The analytical soil results are summarized in the <br /> laboratory report (PET Sample IDs PE1155901 and 02), chain of custody form, and QA/QC <br /> documents can be found in Appendix A of this report. <br /> If you have any questions regarding this matter, please contact our office at (209)467-1006. <br /> Sincerely, <br /> Advanced GeoEnvironmental,Inc. <br /> William.Little <br /> Project Geologist <br /> .- - - - Advvacsd Ce Envimvm nta41nc <br />