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Sequoia S19 Straker Avenue Suite s <br /> saaart,et,to CA 95834 <br /> (9161921-9600 <br /> FAX(916)921-0100 <br /> Analytical www sequolalabs com <br /> SECOR International-Rancho Cordova Project 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 38 <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 Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1 F06001 - EPA 5030B P/T <br /> Blank(IF06001-BLK1) Prepared&Analyzed 06/06/01 _ <br /> Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate a aa-Trifluorotoluene 328 300 109 70-130 <br /> LCS(1F06001-BS1) Prepared&Analyzed 06/06/01 _ <br /> Benzene 219 050 ug/l 200 110 70-130 <br /> Toluene 209 050 200 104 70-130 <br /> Ethylbenzene 21 7 050 200 108 70-130 <br /> es(total) 618 050 600 103 70-130 <br /> u rogate a a a-Triuorotoluene 28 7 300 957 70-130 <br /> LCS Dup(lF06001-BSD1)_ Prepared&Analyzed 06/06/01 _ <br /> Benzene 227 0 50 ug/I 200 114 70-130 3 59 20 <br /> Toluene 223 050 200 112 70-130 648 20 <br /> Ethylbenzene 229 050 200 114 70-130 538 20 <br /> Xylenes(total) 63 0 050 600 105 70-130 192 20 <br /> Surrogate a a a-Trifluorotoluene 298 300 993 70-130 <br /> Batch 1F06002- EPA 5030B McOH <br /> Blank(1F06002-BLK2) Prepared&Analyzed 06/06/01 <br /> Pargeable Hydrocarbons ND 1 0 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> Ethylbenzene ND 00050 <br /> Xylenes(total) ND 00050 " <br /> Surrogate aaa-Trruorotoluene 0 728 0 600 121 40-140 <br /> ota Analytical -Sacramento The results to this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> im Page 13 of 15 <br />