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15 December 2000 <br /> AGI:-tit' Proiect No. 98-0504 <br /> Pau,e ol'7 <br /> I lie proposed probe horino locations many be modified due to field observations or additional <br /> borings may he advanced with approval by the P.HS-EIID. <br /> Soil samples will be collected at 5-1oot intervals heginnim, at 5 feet bso extending to the total probe <br /> boring, depths. Field procedures for advancement ol'probe borings and collection ol'soil samples arc <br /> prescntcd in Section 4.1 .1. Selected soil samples from each probe boring will be submitted for <br /> laboratory analysis with concw-rencc of the PIIS-h;HD. The selected soil samples Neill be analyzed <br /> by a State of California Dcpartmen# of I-Iralth Services (DIiS)-certified Iahoratory for the tollowing <br /> constituent~: <br /> • Total petroleum hydrocarbons quantilied as gasoline and diesel (TPII, and TPII-d) in <br /> accordance with FPA Method 8015 Modified. <br /> • Volatile aromatic hvdrocarbons: henzene. toluene, ethyl benzene and total xylene (B"rF.X) <br /> in accordance ),yith EPA methods 8020 and <br /> • Fuel additives: di-isopropyl ether (DIPI;). ethyl tertiary-butyl ether (ETBE). methyl tertiary- <br /> butyl ether (MTBF). tertiary-amvl methyl ether ("I'AM�I ), tertiary butanol (TBA), methanol. <br /> ethanol. ethylene dibromide (EDB) and 1 2-dichloroethane (1.2-DCA) in accordance with <br /> LPA Method 8260 Modified. <br /> Lahoratory reports for soil analyses. testim, methods, laboratory duality assurance/quality control <br /> (QA./QC) reports, and sample chain of-custody documentation will be presented in a. report with <br /> findin<,s and recommcndaticros. <br /> 1. . GRAB GROI;ND WATER SAMPF.F COLLECTION AND ANALYSIS <br /> Grab ground water samples will be collected from three probe boring using a Geoprobe %rater <br /> sampling assembly. Samples will be collected into 40-ml volatile organic analysis (VOA)vials, as <br /> appropriate for the required analyses. Ground water sample collection procedures are presented in <br /> Section 4.1 .2. Ground water samples will be analyzed by a DI-IS-certified laboratory l'or: <br /> • TPI I-g by EPA Method 8015 Modified; <br /> • B'I F:X by FPA Method 8020, and <br /> • DIPE. E1BE. MTBE. I AMF. TBA, methanol. ethanol, ethylene EDB and I.2-DCA in <br /> accordance with LPA Method 8260 Modified. <br /> Laborator\ reports for around water analyses, testing methods, laboratory quality assurance/quality <br /> control (Q.A%QC) reports. and sample chain of custody documentation will be presented in a report <br /> %yith the findings and recommendations. <br /> th-unced GeoEa%irimmenual.Ine. <br />