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4.5 Sample Analysis <br /> Californiacertified lab on the same da as they are collected. The <br /> 1 be transported to a y <br /> Samples will pa <br /> Those samples which show <br /> hi levels of <br /> samples will be tested for line hydrocarbons,and btex. p high p naso <br /> hydrocarbons will also be tested for total lead. Should high levels of total lead be detected the <br /> respective samples will be tested for leachable lead using distilled water as the leaching agent. <br /> 4.6 Methods and Detection Limits . <br /> Analyte Method Detection Limit mg/kg <br /> Gasoline Hydrocarbons 8015 2.0 <br /> Benzene 8020 •002 <br /> Ethyl Benzene 8020 .002 <br /> Toluene 8020 .002, <br /> Xylene 8020 •002 <br /> organic Lead EPA 7240 0.3 <br /> Leachable Lead (distilled water) EPA 7241 (deionized water) 0.3. <br /> 4.7 Personnel Qualifications <br /> 1. Sampling -- Sampling will be performed by or under the direct supervision of Bob <br /> Bennett and Juan Quijano. Both individuals are California Registered Environmental <br /> Assessors with certified 40 hour training under OSHA standard, 29 CFR 1910.120. <br /> 2. Oversight -- The work will be actively reviewed on-site by a California Licensed <br /> Geologist. The geologist will also perform on-site instrumental readings, OVM. <br /> 5.0,Certification <br /> i <br /> This worm plan was prepared by: + <br /> Bob Bene <br /> Environme al Services Supervisor <br /> Tri Valley Growers fi <br /> Page 6 <br />