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1 819 Stnker Ave Ste 8 <br /> r -7Q9liol:.a Sacramento CA 95834 <br /> (916)921 9600 <br /> J 00 <br /> Analytical PAXequoi la Dom <br /> www sequo�alabs coni <br />' Weston S0111ti0ns,Inc-Walnut Creek Project San Joaquin HSA 5401313 <br /> 1575 Treat Blvd,Ste 212 Project Number 4th Quarter Sampling Reported <br /> Walnut Creek CA,94596 Project Manager Jessica Levine 01/28/04 13 41 <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 Notes <br /> MW-2(S40130-09)Water Sampled 01/14/04 12 30 Received 01/14/04 15 45 <br /> ' Gasoline Range Organics 27000 5000 ug/l 100 4010202 01/19/04 01/19/04 EPA <br /> 8015BI8021B <br /> Benzene 15000 200 400 01/20/04 <br /> ' Toluene ND 50 ;i 100 'i ii 01/19/04 <br /> Ethylbenzene 190 50 <br /> Xylenes(total) 71 50 <br /> Surrogate a a a-Trifluoro toluene 127% 60-140 <br /> ' MW-2d(S401313-10)Water Sampled 01/14/04 12 35 Received 01/14/04 15 45 <br /> Gasoline Range Organics 28000 10000 ug/1 200 4010202 01/19/04 01/19/04 EPA <br /> 8015B/8021B <br /> Benzene 15000 100 11 <br /> Toluene ND 100 <br /> Ethylbenzene 200 100 <br /> Xylenes(total) ND 100MK <br /> " <br /> urrogate a a a-Trtfluorotoluene 117% 60-140 <br /> B-1 (S401313-11)Water Sampled 01/14/04 12 50 Received 01/14/04 15 45 <br /> Gasoline Range Organics ND 50 ug/1 1 4010202 01/19/04 01/19/04 EPA <br /> 8015B18021B <br /> Benzene 1 1 050 C 08,QR-04 <br /> Toluene ND 0 50 " <br /> ' Ethylbenzene ND 0 50 - I' <br /> Xylenes(total) ND 0 50 <br /> ,Surrogate a a a-Triluorotoluene 102% 60-140 <br /> 1 <br /> r <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance 14 uh the chain of <br /> custody doc¢anent Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirely <br /> Page 5 of 10 <br />