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L. �Ww <br /> Mr. Muniappa Naidu <br /> May 10, 2007 <br /> Page 2 <br /> The analytical suite for these six samples was designated in the Tank Removal Permit as that for <br /> a tank with unknown contents: total petroleum hydrocarbons in the gasoline range; total <br /> extractable petroleum hydrocarbons in the diesel range; the aromatic fuel hydrocarbons - <br /> benzene, toluene, ethylbenzene, and total xylene isomers; the fuel oxygenates: Methyl tertiary- <br /> butyl ether(MtBE); Tertiary butyl alcohol (TBA), Di-isopropyl Ether(DIPE); Ethyl tertiary- <br /> butyl ether(EtBE); and tertiary-Amyl methyl ether(TAME); the lead scavengers: ethylene <br /> dibromide and 1,2-Dichloroethane; volatile halogenated hydrocarbon compounds; <br /> polychlorinated biphenols (PCBs); the five LUFT metals (Cd, Cr, Pb,Ni, Zn); and hexavalent <br /> chromium. <br /> Copies of the laboratory analytical report and chain-of-custody documentation are included in <br /> Attachment A. The laboratory analytical results are summarized in Table 1. <br /> Please do not hesitate to email h2ogeolCa,comcast.net or call the undersigned at 925-373-9211 <br /> should you have any questions. <br /> Sincerely, a . <br /> Gary D. Lowe, P.G. (3768), C.E.G. (1559), C.HG. (127) <br /> Principal, Hydrogeologist <br /> H20GEOL A GroundWater Consultancy <br /> Attachments: <br /> Table 1; Attachments A <br /> Xc: <br /> Mr. Richard Walton, Walton Engineering, Inc., P.O. Box 1025, 3900 Commerce Drive, <br /> West Sacramento, CA 95691 <br /> H20GEOL A GROUNDWATER CONSULTANCY <br />