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- -= ENVIRONMENTAL <br /> Analytical Chemists <br /> June 30, 1997 ORGANIC Quality Assurance Report for sample: 733390 <br /> San Joaquin County Solid Waste <br /> C/O S. J. Co Purchasing <br /> 222e. Webster Ave. 675 <br /> Stockton , CA 95202 <br /> BATCH EPA CALIBRATION QA/QC METHOD QA/QC <br /> Constituent ID Method Units Type Conc. % REC AR NOTE Type Conc. % REC % REC AR % DIF MAV NOTE <br /> BFB OL 2A 602/8020 mg/kg LCS 0.100 97.6 77-113 MS 0.100 95.0 93.0 60-129 2.2 11.3 <br /> Benzene OL 2A 602/8020 mg/kg LCS 0.100 94.6 77-119 MS 0.100 91.0 90.5 70-118 0.5 16.5 <br /> Ethyl Benzene OL 2A 602/8020 mg/kg LCS 0.100 92.4 79-120 MS 0.100 88.4 87.9 77-116 0.5 13.5 <br /> Methyl tert-Butyl Ether OL 2A 602/8020 mg/kg LCS 0.100 108 70-130 MS 0.100 80.2 96.3 61-140 15.3 20.0 <br /> Toluene OL 2A 602/8020 mg/kg LCS 0.100 92.3 81-113 MS 0.100 87.3 87.3 63-129 0.0 20.8 <br /> Xylene OL 2A 602/8020 mg/kg LCS 0.300 92.6 78-118 MS 0.300 87.9 87.4 72-123 0.5 16.7 <br /> FGL ID = 19970619 N/A => Not Applicable NOTE => See note indicated below. <br /> FGL ENVIRONMENTAL, INC. <br /> CJ:jgc r,14 /-/"� <br /> Charles Johnson, 5,4 , QA/QC Officer <br /> ComrateOifoe— Fialsi <br /> P.O.Box 27 3 Corporation Street 2500 St ach Road Vis( Y)734-9473 <br /> ornia <br /> Santa Paul, 3061-0272 StodQo, 95215 TEL <br /> TEL:(805) - 10 TEL:(20 2-0181 Mobile:(209)737-2399 <br /> FAX:(805)525 4172 FAX:(209)942-0423 FAX:(209)734-8435 <br />