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-NEW5.0191ma 11 P, -,- -M-ma-w- i <br /> -�--,-,mo "--NEW 01--aol 1�1 <br /> INON L W'h' <br /> I -,ff� fflll M1 -n RM7RO, <br /> i+ <br /> A. Sam le Fre aration <br /> a <br /> 1, Water <br /> Use EPA method 3510, Separation, (EPA Manua'_ SW-846, <br /> i April 1.984). Partitioning with hexane has been found to <br /> s be an acceptable preparation, however other appropriate <br /> solvents may also be used. <br /> "`. 2. Soil <br /> Use EPA method 3550, Sonication Extraction (EP's Manual <br /> SW-846, Aprill 1984). Acetone extraction with sample <br /> partitioning in hexane has been found to be an <br /> is acceptable sample preparation, however other appropriate <br /> solvents may also be used. <br /> f.f <br /> B. Analysis <br /> Chromatographic operations for detection of total <br /> petroleum fuel hydrocarbons. <br /> Detector: Flame Ionization <br /> Fd Column: 10% SP-2100 on 80.100 8` x 1/8" glass <br /> supelcoport. Capillary columns may also be used as a <br /> substitute to� improve separation. <br /> Typical 0 erat ng Conditions: <br /> Carrier Gas: Nitrogen or Helium at 30 mL/man- <br /> Injector Temperature: 2500C <br /> Detector Temperature: 3000C <br /> ., Column Temperature: 400C hold for three min, 10°C/min <br /> ramp rate to 300°C or until at least 95% of all <br /> components are eluted. <br /> C. Quantification <br /> Quantify Total Petroleum Fuel Hydrocarbons by <br /> integrating all major peaks within the time period in <br /> which at least 95% of the recoverable hydrocarbons are <br /> eluted. Calibration shall be based upon an appropriate <br /> fuel standard representati��e of the suspect fuel. <br /> If an appropriate sample for calibration does not exist:, <br /> as in the.,case of an aged fuel, calibration shall be <br /> done using a•,"non-aged" representative fuel standard. <br /> Calibration should be established within the estimated <br /> range of contaminant levels within the sample, based on <br /> odor, sheen or prescreening measurements (i.e. , <br /> combustible gas meter or I.A. method). Where <br /> "non-detectable concentrations" aref zo tedsoil and 5level <br /> of detection shall not exceed 10 ppm <br /> 0 ppb <br /> for water. <br /> c -3- <br /> ti, <br /> Omni MIN'1011111 INNOW M10 <br />