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1151 Indusmal Road <br /> Sequoia San Carlos CA 94070 <br /> Analytical c FAX <br /> ez) (650)232-9604 <br /> (650)232-9612 <br /> www sequoialabs tom <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite 3 Pmect Number Former Unocal#5098, Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 0146 <br /> Total Purgeable Hydrocarbons by DHS LIJFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2060205-EPA 5030B(P/T) <br /> Blank(2060205-BLKi) - - Prepared&Analyzed 06/17/02 <br /> Purgeable Hydrocarbons ND 50 ugA ' <br /> Surrogate a a,a-Triuorotoluene 102 11100 102 60-140 <br /> LCS(2060205-BSI)- ___Prepared&Analyzed 06/17/02 <br /> Surrogate aa a-Trtfluorotoluene 107 ug/1 100 107 60-140 <br /> LCS(2060205-BS2) Prepared&Analyze(L 06/17/02 <br /> Purgeable Hydrocarbons 255 50 ug/l 250 102 70-130 <br /> Surrogate a,a a-Tr�uorotoluene 11 0 10 0 110 60-140 , <br /> LCS Dup(2060205-BSD2) _ Prepared&Analyzed 06/17/02 ' <br /> Purgeable Hydrocarbons 238 50 T Yug/l 250 95� 70-130 7 25 <br /> Surrogate a,a,a-Tri/7uorotoluene 103 " 100 103 60-140 <br /> Matrix Spike(2060205-MSI) Source S206109-07 Prepared&Analyzed 061I7/02 <br /> Surrogate a a a-Triuorotoluene 101 u9/1 100 101 1 60-140 <br /> Matrix Spike Dup(2060205-MSDI) Source S206109-07 Prepared&Analyzed-06/17/02 <br /> - Surrogate a a a-TrIfluoroioiuene 166 ugn J00 10D 00-140 <br /> �BatCO 2060220=EPA 5030B (P/T - - - -- — -- —---- — — _ <br /> Blank(2060220_BLKI) -Prepared&An...a,.ly�ze.d_ 06/17/02- <br /> Pur-,cable <br /> 6/1_7_/..0..2. <br /> Purcable Hydrocarbons ND 50 ugIl <br /> Surrogate a a,a-Trifiuorotoluene 933 _ - T 100 - - -�� 93 60-140 <br /> LCS (2060220-BS2) Prepared&.Analyzed 06/17/02 e <br /> l!urgeabl_e Hydrocarbons 242 -50 __..ug/l_ __250__ _ ., -,,.....--97.x,,.__70-130_ <br /> Surrogate a a a-TrIJ7uorotoluene 110 100 _ 110 60-140 <br /> Sequoia Analytical-San Carlos The results rn this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytrcal report must be reproduced in its entirety <br /> Page 98 of 103 <br />