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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-%00 <br /> FAX 00Analytical www sequoialabs com�� <br /> SECOR International- Rancho Cordova Projc(.t 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 39 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPO <br /> Analyte Result Limit UnuS Level Result %REC Limits RPD Limit Notes <br /> Batch 1 F060011 - EPA 5030B P/T <br /> Blank(IF06001-BLKI) _Prepared&Analyzed 06/06/01 <br /> Purgeable Hydrocarbons ND 50 ug/I <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 <br /> Surrogate aaa-Triuorotoluene 328 300 109 70-130 <br /> LCS(1F06001-BSI) Prepared&Analyzed 06/06/01 <br /> Benzene 219 0 50 ug/I 200 110 70-130 <br /> Toluene 209 050 200 104 70-130 <br /> Ethylbenzene 21 7 0 50 200 108 70-130 <br /> es(total) 61 8 0 50 600 103 70-130 — <br /> M77rogale a a a-Triuorotoluene 28 7 300 95 7 70-130 <br /> LCS Dup(lF06001-BSD1) Prepared&Analyzed 06/06/01 <br /> Benzene 227 0 50 ug/l 200 114 70-130 3 59 20 <br /> Toluene 223 0 50 200 112 70-130 648 20 <br /> Ethylbenzene 22 9 050 200 114 70-130 538 20 <br /> Xylenes(total) 63 0 0 50 60 0 105 70-130 192 20 <br /> Surrogate a a a-Tri luorotoluene 298 300 993 70-130 <br /> Batch 1F06002-EPA 5030B McOH <br /> Blank(lF06002-BLK2) Prepared&Analyzed 06/06/01 <br /> Purgeable Hydrocarbons ND 10 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 " <br /> Xylenes(total) ND 00050 " <br /> Surrogate a a a-Triuorotoluene 0 728 0 600 121 40-140 <br /> aoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance wrth the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 13 of 15 <br />