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Sequoia <br />� Analytical <br />404 N Wiget lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Former Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Steve Carter 03 -Mar -00 1140 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT - Quality Control <br />Sequoia Analytical - Walnut Creek <br />Reporting Spike Source %RPC RPD <br />Analyte Result Liinit Units Level Result °/QREC Ltmtts RPD Limit Notes <br />Batch 00O2001 Prepared 02 -Mar -00 <br />Using EPA 5030B [PIT] <br />Blank (00O2001-BLKI) <br />Purgeable Hydrocarbons <br />ND <br />50 <br />ug/l <br />Benzene <br />ND <br />050 <br />" <br />Toluene <br />ND <br />050 <br />Ethylbenzene <br />ND <br />050 <br />Xylenes (total) <br />ND <br />050 <br />" <br />Methyl tert-butyl ether <br />ND <br />25 <br />" <br />Surrogate tzga-Tnfluorotoluene <br />285 <br />300 <br />950 <br />70-130 <br />LCS (00O2001 -BSI) <br />Benzene <br />175 <br />050 <br />ugn <br />200 <br />875 <br />70-130 <br />Toluene <br />182 <br />050 <br />200 <br />910 <br />70-130 <br />Qyibenzene <br />176 <br />0 50 <br />200 <br />880 <br />70-130 <br />lenes (total) <br />58 6 <br />0 50 <br />600 <br />97 7 <br />70-130 <br />Surrogate a a a-Tnfluorotoluene <br />268 <br />300 <br />893 <br />70-130 <br />Matrix Spike (00O2001-MS1) <br />Source W003001-01RE1 <br />Benzene <br />173 <br />050 <br />ugll <br />200 <br />ND <br />965 <br />70-130 <br />Toluene <br />176 <br />050 <br />200 <br />ND <br />88 0 <br />70-130 <br />Ethylbenzene <br />185 <br />050 <br />200 <br />ND <br />925 <br />70-130 <br />Xylenes (total) <br />592 <br />050 <br />600 <br />ND <br />987 <br />70430 <br />Surrogate Aga-Tnfluorotoluene <br />278 <br />300 <br />927 <br />70-130 <br />Matrix Spike Dup (00O2001-MSDI) <br />Sourle W003001-01RE1 <br />Benzene <br />176 <br />050 <br />ug/l <br />200 <br />ND <br />880 <br />70-130 <br />172 20 <br />Toluene <br />178 <br />050 <br />200 <br />ND <br />890 <br />70-130 <br />1 13 20 <br />Ethylbeazene <br />182 <br />050 <br />200 <br />ND <br />910 <br />70-130 <br />163 20 <br />Xylenes (total) <br />582 <br />050 <br />600 <br />ND <br />970 <br />70-130 <br />170 20 <br />Surrogate gAo-Trni luorotoluene <br />259 <br />300 <br />863 <br />70-130 <br />�eQllOia Analytical - Walnut Creek The results in this report apply to the samples analyzed i n mcordcprce with the chrun of <br />custody document This analytical report must be reproducedin i is entirety <br />✓an emp> Laboratory rector page 7 of 10 <br />`l�? <br />