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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C95834 <br /> (916)922 1-9600 <br /> FAX(916)921 <br />� Analytical wwwsequolalabs com cam <br /> SECOR international-Rancho Cordova Project ARCO 595,Stockton,CA <br /> 3017 Kilgore Road, Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 08/20/01 18 00 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT - 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 /> Watch 1080180- EPA 5030B(P/T) <br /> Sank(1080180-BLKI) Prepared&Analyzed 08/15/01 Y_ <br /> Purgeable Hydrocarbons ND 50 ugll <br /> enzene ND 050 <br /> oluene ND 050 " <br /> Ethylbettzene ND 050Ifyiene " <br /> (total) ND 0 50 <br /> ethyl <br /> ethyl tert-butyl ether ND 25 <br /> Surrogate a a a-Tr fluorotoluene 106 100 106 60-140 <br /> J�CS(1080180_-BS1) Prepared&Analyzed 08/15/01 <br /> enzene 110 050 ug/I 100 110 70-130 <br /> Toluene 102 050 100 102 70-130 <br /> Jen,(tv-ene,, 993 0SD l00 993 70-130 <br /> 101 70-130ta30 3 0 50 30 0 <br /> Methyl tert-butyl ether 933 25 too 933 70-130 <br /> rsarrogate a a a-Triuorotoluene 11 7 100 117 60-140 <br /> trix Spike(1080180-MSI) Source 5108088-14 Prepared&Analyzed 08/15/01 <br /> Benzene 1.4 0 050 ugA 100 3 1 109 60-140 <br /> oluene 122 050 too 076 114 60-140 <br /> thylbenzene 41 8 050 too 33 980 60-140 <br /> Xylencs(total) 541 050 300 26 93 7 60-140 <br />,jAethyl tert-butyl ether 525 25 too 24 285 60-140 QM-4X <br /> urrogate a a a-Trivarotoluene 115 100 125 60-140 <br /> M_atrtx Spike Dup(1080180-MSDI) Source S108088-14 Prepared&Analyzed 08/15/01 <br /> Fenzene 147 050 ugA 100 3 1 116 60-140 488 25 <br /> oluene 127 0 50 100 076 119 60-140 402 25 <br /> Ethylbenzene 409 0 50 100 33 79 0 60-140 2 18 25 <br />�ylenes(total) - 523 050 300 26 877 60-140 338 25 _— <br /> ethy]tert-butyl ether 55 5 25 too 24 315 60-140 5 56 25 QM-4X <br /> Surrogate a a a-Triuorotoluene 135 100 135 60-140 <br /> to 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 9of13 <br />