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1 <br /> Thrifty oil Company Job No: 13-6782-026-00-00 <br /> January 7, 1988 Log No: HTC-7-1398 <br /> Page 5 <br /> 3 . 3 Laboratory Analysis <br />' Chemical analyses were performed on selected soil <br /> samples by Truesdail Laboratories, Inc . , an independent <br /> ' testing laboratory located in Tustin, California . Soil <br /> samples were analyzed for total petroleum hydrocarbons , <br /> ' the constituent stored in the underground tanks, using <br /> Modified EPA Method 8015 . official laboratory results <br /> are included in Appendix C. Chain-of-custody proce- <br /> dures were followed and copies of these documents are <br /> presented in Appendix D. <br /> 1 <br /> 1 <br />