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i <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek C 94598 <br /> (925)988 8-9600 <br /> FAX(925)988-9673 <br /> Analytical vwww seguoialabs cam <br /> U <br /> 1 Weston-Vallejo Proje(,t San Joaquin HSA <br /> PO Bo♦2135 Pro)t-ei Number San JoaquinHSA Reported <br /> Vallejo CA 94592 Project Mandaer Scott Lookingbill 26-May-00 18 37 <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 /> nalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OE23001 - EPA 5030B [PIT] <br /> Blank(OE23001-BLKI) Prepared&Analyzed 23-Mav-00 <br /> rrge ibl,Hydros,srbons ND 50 ug/l <br /> Benzene ND 0 50 <br /> luene ND 0 50 ' <br /> hylbenzene ND 0 50 <br /> Xylenes(total) ND 050 <br /> rrogale as a-Trrfluorotoluene 313 300 104 70-130 <br /> C5(OE23001-BSI) Prepared&Analyzed 23-Mav-00 <br /> Benzene 16 2 050 ug/1 200 810 70-130 <br /> oluene 173 050 200 86 5 70-130 <br /> thylbenzene 182 050 200 91 0 70-130 <br /> Xylenes(totsl) 568 050 600 947 70-130 <br /> tWie a a a-Triuorotoluene 27 4 30 0 91 3 70-130 <br /> ttrix Spike (OE23001-MSI) SourLe W005312-03 Prepared&Analyzed 23-Mav-00 <br /> tth,lb,nzene <br /> nzene 15 3 0 50 ug/l 200 ND 76 5 70-130 <br /> ]uene <br /> 164 0 50 200 ND 820 70-130 <br /> 19 2 0 50 200 ND 960 70-130 <br /> Xylenes(total) 546 0 50 600 ND 910 70-130 <br /> Frogate aaa-Triuorotoluene 263 300 877 70-130 <br /> Matrix Spike Dup (OE23001-MSD1) Source W005312-03 Prepared&Analyzed 23-May-00 <br /> nzene 15 0 0 50 ugll 200 ND 75 0 70-130 1 98 20 <br /> 1.0 <br /> luene 170 0 50 200 ND 850 70-130 3 59 20 <br /> Ethylbenzene 175 0 50 200 ND 875 70-130 926 20 <br /> Iiylenc,s(total) 55 5 0 50 600 ND 92 5 70-130 1 63 20 <br /> rrogale a a a-Tr7uoroioluene 280 300 933 70-130 <br /> 1 <br /> Rea Analvtical - Walnut Creels The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report rnust be reproduced in its cnirrely <br /> Page 7 of Il <br />