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Analytical Chemists <br /> June 30, 1997 ORGANIC Quality Assurance Report for sample: 733390 <br /> San Joaquin County Solid Waste <br /> C/0 S. J. Co Purchasing <br /> 222e. Webster Ave. 675 <br /> Stockton , CA 95202 <br /> BATCH EPA CALIBRATION QA/QC METHOD QA/QC <br /> 1 Constituent ID Method units Type Conc. % REC AR NOTE Type Conc. % REC % REC AR % DIF NAV NOTE <br /> j 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 /> Ethyt 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 NS 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 Appticable NOTE => See note indicated below. <br /> FGL ENVIRONMENTAL, INC. <br /> CJ:jgc Charles Johnson, . , QA/QC Officer <br /> C=rate Offices 8 L.aboraj= Office 8 Laboratory Field Office <br /> P.O.Box 272/853 Corporation Street 2500 Stagecoach Road Visalia,California <br /> Santa Paula,CA 93061-0272 Stockton,CA 95215 TEL:(209)734-9473 <br /> TEL:(805)659-0910 TEL:(209)942-0181 MobNe:(209)737.2399 <br /> FAX:(805)525.4172 FAX:(209)942.0423 FAX:(209)734-8435 <br />