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a CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> March 23 , 1998 . Submission #: 9803170 <br /> i <br /> CONSTRUCTION TESTING & ENG. <br /> Atten: Steve Teel <br /> Project: CINTRA PARK roject#: 20-0445B <br /> Received: March 13 , 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#: 11762 Analyzed: March 21, 1998 <br /> Spike <br /> Spike Amount Amount Found Spike Recov % <br /> SSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte - (Lag/Kg) m K Limits RPD Lim <br /> GASOLINE 0 . 500 0 . 500 0 .450 0 .446 90 . 0 89 . 2 75-125 0 .89 35 <br /> BENZENE 0 . 100 0 . 100 0 . 099 0 . 0998 99 .4 99 . 8 77-123 0 .40 35 <br /> TOLUENE 0 . 100 0 . 100 0 . 0928 0 . 0937 92 .8 93 . 7 78-122 0 . 96 35 <br /> ETHYL BENZENE 0 . 100 0. 100 0 . 089 E 0 . 0906 89 .6 90 . 6 70-130 1. . 11 35 <br /> XYLENES 0 ..300 0. 300 0 . 261 0 . 264 87 .0 88 . 0 75-125 1 . 14 35 <br /> 1 + <br /> Smpt #: 176678 1220 Quarry Lane- Pleasanton, California 94566-4756 <br /> i BSD Smpl #: 176679 (510) 484-1919-Facsimile ( 10)484-1096 °`-®12M VWMIkS&M <br /> 1 Federal ID#68-014 157 <br />