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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C 95834 <br /> ID (916)9z2 1-9600 <br /> FAX(9 t 6)92 l-O 100 <br /> IVAnalytical www sequoialabs com <br /> SECOR International-Rancho Cordova Proleu Former Chevron 9-8632 Tracy,CA <br /> 3017 Kilgore Road,Suite 100 Project Number 077 43506 150 Reported <br /> Rancho Cordova CA,95670 Project Manager Bill Brasher 06/15/01 13 22 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit /Snits Level Result %RLC Limits RPD Limit Notes <br /> Batch 1 F04007- EPA 50308 McOH <br /> Matrix Spike(1F04007-MSI) Source W106078-05 Prepared 06/01/01 Analyzed 06/02/01 <br /> Benzene 081 00050 mg/kg 0 80 ND 100 50-150 <br /> Toluene 0 85 00050 0 80 ND 110 50-150 <br /> Ethylbenzene 0 89 00050 080 ND 110 50-150 <br /> Xylenes(total) 2 7 00050 2 4 ND 110 50-150 <br /> Surrogate a a a-Trifluorotoluene 064 0 60 110 40-140 _ <br /> Matrix Spike Dup(IF04007-MSD1) Source W106078-05 Prepared 06/01/01 Analyzed 06/02/01 <br /> Benzene 0 86 00050 mg/kg 0 80 ND 110 50-150 6 0 20 <br /> Toluene 090 00050 080 ND 110 50-150 5 7 20 <br /> Ethylbenzene 094 00050 080 ND 120 50-150 5 5 20 <br /> Xylenes(total) 2 8 00050 2 4 ND 120 50-150 3 6 20 <br /> *gate a a a-Triuorololuene 068 0 60 110 40-140 <br /> Batch 1F05002-EPA 5030B PIT <br /> Blank(1F05002-BLK1) Prepared&Analyzed 06/05/01 <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a aa-Trrfluorotoluene 28 3 300 943 70-130 <br /> LCS(1F05002-BS1) Prepared&Analyzed 06/05/01 <br /> Benzene 19 9 0 50 ug/1 200 995 70-130 <br /> Toluene 200 0 50 20 0 too 70-130 <br /> Ethylbenzene 20 1 0 50 200 100 70-130 <br /> Xylenes(total) 56 8 0 50 600 947 70-130 <br /> Surrogate a a a-Triuorotoluene 281 300 937 70-130 <br /> oia Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must he reproduced in its entirety <br /> Page 17 of 20 <br />