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4 <br /> 3. LABORATORY ANALYSES <br /> The groundwater samples were transported to Sequoia Analytical, a state-certified <br /> laboratory, located in Redwood City, California. Groundwater samples were analyzed <br /> for the presence of TPH-G following Environmental Protection Agency (EPA) Method <br /> ' <br /> 8015 Modified, MTBE and BTEX following EPA Method 8020. The California Regional <br /> Water Quality Control Board has requested testing for MTBE using EPA Method 8020 <br /> (State of California, May 2, 1995) In addition, a confirmation MTBE analyses was <br /> performed on the groundwater sample collected from Monitoring Well MW-5 following <br /> EPA Method 8240 Since Method 8240 is a more accurate method for evaluating the <br /> concentration of MTBE, the Method 8240 concentration is used Copies of the <br /> laboratory analytical report and chain of custody record are in Appendix D <br /> I <br /> SMTHMVSW 184 2731QUHS 132 RPT[23 Apr 961 <br />