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CHROMALAB, INC. Submission #: 2000-07.0090 <br /> Environmental Services(SDB) <br /> To: San Joaquin Company, Inc. Test Method: 8020 <br /> 8015M <br /> Attn: Dai Watkins Prep Method: 5030 <br /> Batch QC Report <br /> Gas/BTEX <br /> Laboratory Control Spike (LCSILCSD) Water QC Batch#2000107111-01.05 <br /> LCS: 2000/07/11-01,05-002 Extracted: 07/11/2000 08:51 Analyzed 07/11/2000 08:51 <br /> LCSD: 2000/07/11-01.05-003 Extracted. 07/11/2000 09:24 Analyzed 07/11/2000 09:24 <br /> i 1 !Recovery RPD , <br /> Compound Conc. [u /L Ex Conc. a /L Recovery /o RPO Ctrl.Limits /o T Flags <br /> s l p� [ g ] ry[ 1 [ ll <br /> LCS LCSD LCS LCSD LCS LCSD % ! LCS LCSD '', <br /> Gasoline 437 450 500 500 87.41 90.0 2.9 75-125 20 1 <br /> Benzene 93.5 92.8 100.0 100.0 93.5 92.6 0.8 77-123 20 <br /> Toluene 91A . 89.5 100.0 100.0 91.4'! 89.51 2.1 78-122 20 <br /> Ethyl benzene . 93.3 192.1 100.0 100.0 93.3 92.1 1.3 70-130 20 <br /> Xylene(s) 266 264 i 300 300 88.7 j 88.0 i 0.8 75-125 20 , <br /> Surrogate(s) <br /> 4-Bromonuorobenzene 421 442 500 500 84.2 88.450-150 <br /> Trifluorololuene 433 421 500 500 86.6 84.2 1 58-124 <br /> 4-Bromofluorobenzene-FI 371 i 380 500 500 74.2 76.0 50-150 <br /> Trifluorotoluene-FID 446 457 500 500 89.2 91.4 58-124 <br /> 1220 Quarry Lane'Pleasanton,CA 945664756 <br /> Telephone:(925)484-1919'Facsimile:(925)484-1096 <br /> Printed on:OV1212000 11:27 Page 12 of 13 <br />