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l Road <br /> Sequoia t55i afimC a94070 <br /> San Carlos 23 -9600 <br /> Analytical (650)232-9600 <br /> FAX(650)232-4612 <br /> IRW www scquoialabs com <br /> Gettler-Ryan/Geostrategies(1) Protect Unocal(4) <br /> 6747 Sierra Court, Suite J Project Number Former Unocal#5098, Stockton Reported <br /> Dublin CA,94568 ProJectManager Deanna Harding -, 07/01/02 07 46 <br /> Total Purgeable Hydrocarbons by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting y <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> _MW-23D(L206021-30)Water Sampled 06/11/02 12 11 Received 06/11/02 18 05 „W ' <br /> Purgeable Hydrocarbons 560 50 ug/l 1 2060224 06/18/02 .06118102 =DHS LUFT HC-12 <br /> Surrogate aa a-Trifluorotoluene 123% 60-140 ' <br /> _MW-24S L206021-3I)Water Sampled 06/09/02 15 35 Received 06111/02 18 05 _ <br /> Purgeable Hydrocarbons 910 500 ug/l 10 2060241 06/19/02 06/19/02 DHS LUFT HC-12 <br /> Surrogate a,a,a-Triuorotoluene 100% 60-140 <br /> MW-24D(L206021-32)_Water Sampled 06/091021445 Received 06/11/02 18,05 - <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2060224 06/18/02 06/18/02 DHS LUFT <br /> Surrogate a,a,a-Trifluorotoluene 92% 60-140 ' _ <br /> _MW-25S(L206021-33)Water Sampled 06/11/02 09 5.0 Received 06/11/02 18 05 ^ <br /> Purgeable Hydrocarbons - - ND -50- ug/l r- I 2060232 _06/18102 06/19/02 DHS LUFT - --, <br /> Surrogate a,a,a-Trifluorotoluene 88% 60-140 " <br /> MW-25D(L206021_-34)Water Sampled 06/11/02 10 30 Received 06/11/02 1805 <br /> Purgeable Hydrocarbons 33000 5000 ug/I 100 2060241 06/19/02 06/19/02 DHS LUFT <br /> Surrogate a,a,a-Trifluorotoluene 91 % 60-140 <br /> MW-AS26(L206021-35)Water Sampled 06/11/02 11 20 Received 06/11/02 18 05 <br /> Purgeable Hydrocarbons 130 50 ug/l I 2060232 06/18/02 06/19/02 DHS LUFT <br /> TSurragate a a,a-Trifluorotoluene 82 <br />- MW-27(L206021-36)Water Sampled 06/10/02 10 52 Received 06/11/02 18 05 <br /> Purgeable Hydrocarbons T ND 50� ug/l T 1 2060232 06/18/02 06/19/02 DHS LUFT <br /> Surrogate a,a,a-Trifluorotoluene-f-----_ - - =--73 %�--- -60.;-140---- <br /> Sequoia <br /> 60=140----Sequoia Analytical- San Carlos The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 80 of 103 <br />