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QSequoia <br />� Analytical <br />819 Striker Avenue Suite 8 <br />Sacramento CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />www sequoialabs com <br />SECOR International - Rancho Cordova Projeo Arco 4932 Stockton CA <br />3017 Kilgore Road, Suite 100 Project Numbr_r N/A Reported <br />Rancho Cordova CA, 95670 Proaec_t Manager Rusty Benkosky 03/21/01 17 27 <br />Total Purgeable Hydrocarbons (C6 -C12), BTEX and MTBE by DHS LUFT <br />Sequoia Analytical - Sacramento <br />Report % <br />Analyte Result Limit Units Dilation Batch Prepared Analyzed Method Notes <br />MW -1 (S103103-01) Water Sampled 03/05/01 16 42 Recet,ed 03/07/01 07 55 <br />Purgeable Hydrocarbons <br />834 <br />500 LgJ1 10 1030178 03/12/01 03/12/01 DIIS L UI1 1102 <br />Benzene <br />125 <br />5 00 " <br />Toluene <br />550 <br />5 00 <br />Ethylbenzene <br />205 <br />5 00 " <br />Xylenes (total) <br />127 <br />5 00 <br />Methyl tert-butyl ether <br />379 <br />250 <br />Surrogate a a a-Trifluorololuene <br />90° 601 0 <br />638% 60-140 " <br />MW -2 (S103103-02) Water Sampled <br />03/05/01 16 12 <br />Received 03/07/01 07 55 <br />Purgeable Hydrocarbons <br />/ 4 <br />7750 <br />5000 ug/l 100 1030178 03/12/01 03/12/01 DHS LUFT <br />Benzene <br />106 <br />500 " <br />Toluene <br />176 <br />500 " <br />Ethylbenzene <br />1580 <br />500 " <br />Xylenes (total) <br />579 <br />500 " <br />ANkthyl tert-butyl ether <br />12000 <br />250 <br />Surrogate a a a- Trifluorotoluene <br />90° 601 0 <br />rugate a a a-Tryuorotomene 7 - <br />MW -3 (5103103-03) Water Sampled 03/05/01 15 41 Received 03/07/0107 55 <br />Purgeable Hydrocarbons <br />799 <br />500 ug/I 1 <br />Benzene <br />646 <br />0 500 <br />Toluene <br />ND <br />0 500 <br />EthylbenzenL <br />ND <br />0 500 " <br />Xylenes (total) <br />0 653 <br />0 500 <br />Methyl tert-butyl ether <br />ND <br />2 50 " <br />Surrogate a a a- Trifluorotoluene <br />718 % 60-1-10 <br />1030137 03/09/01 03/09/01 DHS LUFT <br />P-02 <br />P-02 <br />Sequoia Analytical - Sacramento The results in thrs report apply to the samples analyzed in accordance ii ith the chain of <br />iscustody document This analytical report must be reproduced in its enrrrery <br />Page 2 of 12 <br />