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Sequoia 819 Striker Avenue Suite 8 <br /> 958 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916) 00 <br /> w <br /> f ww sequotalabs alabs com <br /> 1 <br /> SECOR International-Rancho Cordova Project Arco 4932,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Number NIA Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 03/02/01 17 10 <br /> Total Purgeable Hydrocarbons (C6-Cl 2), BTEX and MTBE by DHS LUFT - QuaIity Control <br /> Sequoia Analytical - Sacramento <br /> Repotting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limas RPD Limit Notes <br /> 12ateb 1020260-EPA 5030B(PIT) <br /> tits. <br /> Blank(1020260-BLKI) Prepared&Analyzed 02/23/01 <br /> furgeable Hydrocarbons ND 500 ug/l <br /> enzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> { ylt-es(total) ND 0 500 1' <br /> ethyl tert-butyl ether ND 250 <br /> Surrogate a a a-Trfuorotoluene 951 100 951 60-140 <br /> 'Lr CS(3020260-BSI) Prepared&Analyzed 02/23/01 <br /> Benzene 834 0 500 ug/l 10 0 834 70-130 <br /> Toluene 8 87 0 500 100 887 70-130 <br /> WZ) <br /> 9 04 0500 100 904 70-130 <br /> 270 0 500 300 900 70-130 <br /> Methyl Cert-butyl ether 8 82 2 50 too 882 70-130 <br /> �urrogate a a a Tri luorotoluene 816 10 0 816 60-140 <br /> Matrix S_pik_e(1020260-MS1) Source S102249-02 Prepared&Analyzed 02/23/01 <br /> Benzene _ 842 0 500 ug/l 100 ND 842 60-140 <br /> oluene 8 78 0 500 100 ND 878 60-140 <br /> tthylbenzene <br /> 9 25 0 500 100 ND 925 60-140 <br /> Xylenes(total) 280 0 500 300 ND 933 60-140 <br /> Irellylrt- utyltebether 9 15 250 100 ND 91 5 60-140urrogate .ba a-Trifluorotoluene 101 100 101 60-140 <br /> OMatnx Spike Dup(1020260-_MSD1) Source 5102249-_02 _ _Prepared&Analyzed 02/23/01 <br /> Benzene 931 0 500 ug/1 100 ND 93 1 60-140 10 0 25 <br /> Toluene 9 84 0 500 too ND 984 60-140 114 25 <br /> Ethylbenzene 998 0 500 100 ND 998 60-140 759 25 <br /> I <br /> t <br /> ylenes(total) 299 0500 300 ND 997 60-140 656 25 <br /> ethyl tert-butyl ether 923 2 50 100 ND 923 60-140 0 871 25 <br /> Surrogate a a a-Trifluorotoluene 11 0 10 0 110 60-140 <br /> ,rola Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> c custody document Thus analytical report must be reproduced in its entirety <br /> Page 7 of 9 <br />