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NOREEN <br /> CHROMALAB, INC. <br /> Environmental Services(SDB) <br /> F , March 23 , 1998 Submission #: 9803170 <br /> CONSTRUCTION TESTING & ENG. <br /> Atten: Steve Teel <br /> Project: CINTRA PARK P ject#: 20-0445B { <br /> Received: March 13 , 1998 <br /> re: Matrix spike report for Gasoline B EX MTBE analysis . i <br /> Method: SW846 8020A Nov 1990 / 8015Mod <br /> F. Ma trix: WATER <br /> Lab Run#: 11763 Instrument: 3400-4 Analyzed: March 22 , 1998 <br /> Spiked <br /> FL` Sample Spike Amt Amt Found Spike Recov <br /> Amount MS MSD MS MSD MS MSD Control % RPD <br /> Analyte u L u L L % Limits RPD Lim <br /> GASOLINE N.D. 500 500 455 429 91 . 0 85 . 8 65-135 5 . 88 20 <br /> MTBE N.D. 100 100 92 . 8 102 92 . 8 102 65-135 9 .44 20 <br /> BENZENE N.D. 100 100 85 . 6 90 . 0 85 . 6 90 . 0 65-135 5 . 01 20 <br /> TOLUENE N.D. 100 100 91 .4 95 . 8 91 . 4 95 . 8 65-135 4 . 70 20 <br /> ETHYL BENZENE N.D. 100 100 99 . 1 103 99 . 1 103 65-135 3 . 86 20 <br /> XYLENES N.D. 300 300 267 278 89 . 0 92 . 7 65-1.35 4 . 07 20 <br /> > Sample Spiked: 175104 <br /> Submission #: 980 170 <br /> FClient Sample ID: SB- 3/11 <br /> F <br /> I <br /> F <br /> M. . <br /> F1 <br /> P1 <br /> 1220 Quarry Lane• Pleasanton, Ca ifornia 94566-4756 <br /> � <br /> Ms sSm #: 176585 (510) 484-1919• Facsimile (5 0)484-1096 MSD �E #: 175586 QCMSPK7224 VtNCE 23-Met-98 15:0 <br /> Federal ID #68-0140157 <br />