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a •: x. „"4 :.: " _ ,� � �".� ,� f L ,,fag y, r'�, <br /> y, MJse =?r1 -,sethcd 3550, Scnication wxYract:an, (SPA <br /> manual S"+7-�46 , apr-1 198:) . ,Acetone extraction <br /> - in :zexane as been found <br /> w4 t:7 sa:an?a partit-oning however <br /> we an accentable sample preflarat�on, <br /> U <br /> other aper;nriata sol•rerta may also be <br /> B. Analvs's <br /> era-ions for detect_on of tat31 <br /> aetroleum _sel hydrocarbons. <br /> Detectcr: Flame Ionization <br /> column: 10 Percent SP-2100 on 80. :.00 aft X 1/$^ <br /> glass supeicocart. capi.11ar.r columns may also be <br /> used as a subst-tote to improve separat1011. <br /> Carrier Gas: Nitrogen at 30mL/min. <br /> In;iector Temperature: 25000 <br /> 0etsctor Tamnerature: 30Q°C <br /> Column Temgeratsre: 400c hold for 3 m�nutas, <br /> locc/min ramn rate to 300ec or until. at Least 35% <br /> of ail components are (r .uted. <br /> C. Quant"'c3t'an <br /> QuantiR�. Total Petroleum Fuel Hydrocarbons by <br /> intagrat'�.g all deta-:table peaks within the time <br /> period in Which at least 95% of the recoverable <br /> hvdrocarbors are eluted. Calibrat:.on shad. be <br /> based upon an aanrovr=ate fuel standard <br /> -epresertati-re of the suspect fuel. <br /> w= ar. appropriate sample for cal-' tion does <br /> not exist, as in the case of an aged fuel, <br /> calibration shall be done using a "non-aged" <br /> recresentat'_ve fuel standard. <br /> Calibration should be established within the <br /> estimated range of contaminant levels within the <br /> sample, based on odor or sheen or on prescreening <br /> measurements (i.e. , ccmbustabla gas meter, or Z.R. <br /> method) . Where "ncn-detectable concentrations'* <br /> are reported, the level of detection shall not <br /> exceed 10 PPM, for soil and 50 ppb for water. <br /> yam; <br />