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A N / EN Inc <br /> Analytical & Environmental Chemistry <br />' <br /> VOLATILE AROMATICS & TPN AS GASOLINE BY GC/PID-FID <br /> tBatch I D 0311-01 D METHOD BLANK <br /> Date Analyzed 03/12/98 SOIL <br />' Date Extracted 03/11/98 <br /> Dilution-ext 1 <br />' Concentration of sample expressed as ug/9 (ppm) <br /> Analyte Conc PQL <br />' Methyl-tert-Butyl Ethe ND 5 <br /> Benzene ND fly <br /> Toluene ND 05 <br /> Ethylbenzene ND 05 <br />' Xylenes-Total ND 05 <br /> TPH-Gasoline ND 5 <br /> PQL = Practical Quantitation Limit <br />' ND = None Detected at or above the PQL <br /> Method blank contains reagent water, surrogate, and 50ul Methanol <br /> Surrogates Recovery Limits <br />' a,a,a-TFT(FID) 109% 58-127 <br /> 4-BFB(FID) 113% 55-151 <br /> 4-BFB(PID) 106% 68-137 <br /> w. <br /> 1 <br /> 455 RESERVATION ROAD, SUITE G • MARINA, CA 93933 • (408) 883-0123 • FAX (408) 883-0122 <br /> ecycfed paper <br /> METHOLD BLANK-SOIL <br />