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F! <br /> CHROMALAB, INC. <br /> F11 <br /> Environmental Services(SDB) <br /> FApril 16 , 1998 Submission #: 9804155 <br /> CONSTRUCTION TESTING & ENG. <br /> Atten: Steve Teel <br /> F, Project: CINTRA PARK, PHASE II roject#: 20-0445B <br /> Received: April 9 , 1998 <br /> re: Blank spike and duplicate report f or Gasoline BTEX MTBE analysis . <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> Matrix: WATER <br /> Lab Run#: 12186 Analyzed: April 14 , 1998 <br /> Spike <br /> Spike Amount Amount Found Spike Recov % <br /> F ' BSP Dup BSP Dup BSP Dup Control % RPD <br /> Analyte u L u L % % Limits RPD Lim <br /> GASOLINE 500 500 514 487 103 97 .4 75-1.25 5 . 59 20 <br /> MTBE 100 100 116 107 116 107 75-125 8 . 07 20 <br /> BENZENE 100 100 113 104 113 104 77--123 8 . 29 20 <br /> TOLUENE 100 100 114 105 114 105 78-122 8 . 22 20 <br /> f , ETHYL BENZENE 100 100 118 108 118 108 70-130 8 . 85 20 <br /> XYLENES 300 300 351 322 1.17 107 75-125 8 . 93 20 <br /> F <br /> 71 <br /> Y <br /> 7' <br /> r , <br /> F, <br /> F. <br /> F <br /> F, <br /> BS Smpt #: 180664 1220 Quarry Lane • Pleasanton, California 94566-4756 <br /> BSD Smpl #: 180665 (510) 484-1919•Facsimile ( 10) 484-1096 <br /> Federal ID#68-01 1 <br /> 0157 <br />