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r <br /> �� _ UT ENVIRONMENTAL LABORATORY <br /> ANALYTICAL & CONSULTING SERVICES <br /> Jam` Division of Oil Recovery Systems, Inc. <br /> " P.0. Box 541, Greenville, NI4 02048 <br /> i., <br /> Tel: (603)878.2500 <br /> 8/19/86 <br /> Report No. 20-2894-2 <br /> Submitted to: Robert Jz-,ncal <br /> Groundwater Technology <br /> 4080 Pike Lane <br /> Concord , C,k . 94520 <br /> _ - t <br /> Sample Identification: i <br /> The attached report covers -.rater samples 829042-29043, 29046 , t <br /> 29049, 29050-29054 token by R . Hughes using 40mL septum--capped <br /> - glass vials at site X20--2894 , Stockton , California. <br /> Method: i <br /> �- Analysis was performed for purgeable aromatic priority pollutants s <br /> and :cylenes by purge and trap gas chromatography with i <br /> photoionization and flame ionization detection as per EPA Method <br /> 502 . Quantification was performed on a very polar colurin which <br /> i fractionates aliphatics (up to C12) away from volatile aromatics. <br /> g �,.:-,,Chromatographic conditions are referenced in GTL Method Code 110. <br /> Jfe%ane is used as a calibration standard for the aliphatic <br /> hydrocarbons and miscellaneous aromatics, if reported . <br /> i r7 Minimum Detection Linit (MDL) at 5 times background is 0.5 ppb <br /> for .all parameters. The level for reliable quantitation for the <br /> summed groups such as aliphatics is 20 ppb. Samples diluted in <br /> order to maintain the calibrated range are so indicated by a <br /> footnote giving the factor by which the HDL is raised . <br /> 1 <br /> Sampling and sample handling and preservation are specified by <br /> :;his laboratory to be as per EPA Method 602. Any irregularities6-1 <br /> � <br /> are referenced in the attached quality assurance report, i <br /> F Resu ts: <br /> esu is are reported in ppb (ug/1 ) <br /> Prepared by: . �. J.P./L.L . <br /> �.F Bob Edwards analysts <br /> GC Manager <br /> f <br />