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CHROMALAB, INC. <br /> � Environmental Services(SDS) � <br /> March 30, 1998 Submission #: 9803372 <br /> CONSTRUCTION TESTING & ENG. <br /> Atten: Steve Teel <br /> Project: 20-0445B <br /> Received: March 26, 1998 <br /> re: Blank spike and duplicate report for Gasoline BTEX analysis . <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> Matrix: SOIL <br /> .Lab Run#: 11834 Analyzed: March 26, 1998 <br /> Spike <br /> Spike Amount Amount Found Spike Recov % <br /> -- BSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte (mg/K m K $ Limits RPD Lim <br /> GASOLINE 0 . 500 0 . 500 0 .472 0 .452 94 .4 90 .4 75-125 4 . 33 35 <br /> BENZENE 0 . 1.00 0 . 100 0 . 0967 0 . 0910 96 . 7 91 . 0 77-123 6 . 07 35 <br /> TOLUENE 0 . 100 0 . 100 0 - 0909 0 . 0858 90 . 9 85 . 8 78-122 5 . 77 35 <br /> ETHYL BENZENE 0 . 100 0 . 100 0 . 088 3 0 . 0831 88 . 8 83 . 1. 70-130 6 . 63 35 <br /> XYLENES 0 . 300 0 . 300 0 . 256 0 . 241 85 . 3 80 .3 75-125 6 . 04 35 <br /> r- <br /> BS Smpl. #: 177489 1220 Quarry Lane• Pleasanton, California 94566-4756 <br /> BSD Smpl #: 177490 (510) 484-1919•Facsimile ( 10) 484-1096 <br /> p[-95p7�6 NAIL 11:Ok® <br /> Federal ID#68-014 157 <br />