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rY <br /> Sequoia <br /> • 619 Striker Ave Ste <br /> �.7e [l Ola 5ammcnto,CA 958344 <br /> (916)921 9600 <br /> ► <br /> Analytical FAX(916)921-0100 <br /> www segaoialabs cam <br /> 1 <br /> Geological Technics,Inc Project Montas Bros 5504379 <br /> ' 1101 79,Street Project Number 724 2 Reported <br /> Modesto CA,95354 Project Manager Mandeep Singh 05/05/05 10 29 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B <br /> Sequoia Analytical-Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Not <br /> ' MW-202($504379-10)Water Sampled 04/18/0512 00 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C12) ND 50 ug/1 1 5040250 04/21/05 04/2t/05 EPA <br /> 8015B/80218 <br /> Benzene ND 0 50 IF 11„ ii <br /> Toluene ND 050 IF <br /> " <br /> Ethylbenzene ND 050 11 <br /> Xylenes(total) ND 050 1. IF " <br /> M <br /> ethyl tert-butyl ether ND 2 0 " <br /> ' Surrogate 4-BFB(FID) 97% 60-140 " <br /> Surrogate a a a-TFT(PID) 76% 60-140 IF <br /> ' MW-208(5504379-11)Water Sampled 04/18/0514 15 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C12) 600 50 ug/l 1 5040250 04/21/05 04/21/05 EPA <br /> 8015B/8021B <br /> Benzene 6 1 0 50 " <br /> IlklMlolueneND 0 50 <br /> thylbe <br /> thylbnzene ND 0 50 <br /> Xylenes(total) 0 89 050 " <br /> Methyl Cert-butyl ether 15 2 0 " <br /> Surrogate 4-BFB(FID) 134% 60-140 IF IF " " <br /> Surrogate a,a a-TFT(PID) 92% 60-140 " <br /> MW-209(S504379-12)Water Sampled 04/18/05 15 28 Received 04/18/05 18 00 <br /> Gasoline Range Organics(C4-C 12) ND 50 ug/l 1 5040250 04/21/05 04/21/05 EPA <br /> 8015B/8021B <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> ' Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 IF <br /> Methyl tert-butyl ether 13 2 0 IF " <br /> ISurrogate 4-BFB(FID) 113% 60-140 II " <br /> Surrogate a,a a-TFT(PID) 84% 60-140 " <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed m accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 6 of 10 <br />