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J319 Striker Avenue Suite 8 <br /> Sequoia Sacramento c 9 <br /> (916}922 1-960096W <br /> FAX(916)921-0100 <br /> a4- ) 0 <br /> Analytical www sequoialabs corn <br /> ir <br /> SECOR International-Rancho Cordova Project Chevron 9-6171, Stockton,CA <br /> 3017 Kilgore Road, Suite 100 Projeu Number 077 43512 251 Repotted <br /> Rancho Cordova CA,95670 Project Manager Bill Brasher 07/12/01 18 32 <br /> Total Purgeable Hydrocarbons (C6-Cl2) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC [LPD <br /> Analyte Result Limit Units Level Result %R-EC Limits RPE) Limit Notes <br /> Batch IF25005- EPA 50308 McOH <br /> Blank(I F25005-BLKI) Prepared 06/25/01 Analyzed 06/28/01 <br /> Purgeable 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 a a a-Trifluorotoluene 0 648 0 600 108 40-140 <br /> Blank(1F25005-BLK2) Prepared 06/28/01 Analyzed 06/29/01 <br /> Purgeable Hydrocarbons ND 1 0 mg/kg <br /> Benzene ND 00050 " <br /> Toluene ND 00050 " <br /> nzene ND 00050 <br /> X'W5(total) ND 00050 " <br /> Surrogate aa a-Triuorotoluene 0 514 0 600 857 40-140 <br /> LCS(IF25005-BSI) Prepared 06/25/01 Analyzed 06/28/01 <br /> Benzene 0 680 00050 mg/kg 0 800 850 50-150 <br /> Toluene 0 734 00050 0 800 918 50-150 <br /> Ethylbenzene 0 786 00050 0 800 982 50-150 <br /> Xylenes(total) 236 00050 240 98 3 50-150 <br /> Surrogate a a a-Tri luorotoluene 0 628 0 600 105 40-140 �� W <br /> LCS(1F25005-BS2) Prepared 06/28/01 Analyzed 06/29/01 <br /> Benzene 0 684 00050 mg/kg 0 800 85 5 50-150 <br /> Toluene 0 712 00050 0 800 890 50-150 <br /> Ethylbenzene 0 768 00050 0 800 960 50-150 <br /> Xylenes(total) 229 00050 240 95 0 50-150 <br /> Surrogate a a a-Trifluorotoluene 0 638 0 600 106 40-140 <br /> �ota 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 be reproduced in its entirety <br /> Page 9 of 13 <br />