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SequoSSacram n <br /> i8 19a toSkerCA 95834 <br /> (936)421 9600 <br /> Analytical wA se uinala16)92 scot" <br /> wµ�sequoialabs cam <br />' Weston Solutions,Inc-Walnut Creek Project San Joaquin HSA S401313 <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 /> Anatyte Resuh Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-9(5401313-01)Water Sampled 01/13/04 11 10 Received 01/14/041 5 <br /> 1/14/0415 45 <br /> Gasoline Range Organics ND 50 ug/1 1 4010202 01/19/04 01/19/04 EPA <br /> 801513/80215 <br /> Benzene ND 050 " <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 <br /> Surrogate a a a-Trtfluorotoluene 119% 60-140 " <br />' MW-7(5401313-02)Water Sampled 01/13/04 12 10 Received 01/14/04 15 45 <br /> Gasoline Range Organics ND 50 ug/l 1 4010202 01/19/04 01/19/14 EPA <br /> 801513/802 1 B <br />' Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> WU <br /> rrogate a a a-Trtfluorotoluene 112% 60-140 <br /> W-4(S401313-03)Water Sampled 01/13/04 13 15 Received 01/14/04 15 45 <br /> Gasoline Range Organics ND 50 ug/1 1 4010202 01/19/04 01/19/04 EPA <br /> 801513/802 113 <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 I, " <br /> Xylenes(total) ND 050 <br /> Surrogate a a a-Trtfluorotoluene 119% 60-140 <br /> MW-6(5401313-04)Water Sampled (11113/04 15 35 Received 01/14/04 1145 <br /> ' Gasoline Range Organics 62 50 ug/1 1 4010202 01/19/04 01/19/04 EPA HC-19 <br /> 801513/802113 <br /> Benzene ND 050 " <br /> ' Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 0 50 <br /> Surrogate a a a-Trtfluorotoluene 107% 60-140 <br /> 1 <br /> r <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a xet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 3 of 10 <br /> r <br />