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i <br /> Sequoia 1551 T Carlos <br /> al Road <br /> San Carlos 23 -9600 <br /> Analytical (550)232-9612 <br /> FAX(650) labs c 12 <br /> a�ww sequoialabs coin <br /> Gettler-Ryan/Geostrategies(1) Project Unocal(4) <br /> 6747 Sierra Court, Suite 3 Project Number Former Unocal#5098,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 07/01/02 07 46 <br /> Total Purgeable Hydrocarbons by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting _ <br /> Analytc Result Lunit Units Dilution Batch yPrepared Analyzed Method Notes - <br /> MVV-I L206021-02 Water Sampled 06110/02.15 30 Received 06/11/02 18 05 <br /> Purgeable Hydrocarbons -1000 - 500 , ug/l 10 - 2060205 06/17/01 06/17/02 DHS LUFT HC-12 <br /> Surrogate a a,a-Trifluorotoluene 104% 60-140 <br /> MW-2(L206021-03)Water Sampled 06/10/02 16 42 Received 06/11/02 18 05 <br /> Purgeable Hydrocarbons 13000 500 ug/l 10 2060205 06/17/02 06/17/02 DHS LUFT <br /> Surrogate a,a,a-Triuorotoluene 132% 60-140 <br /> NM-3(L206021-04)Water Sampled 06/10/021630 Received 06/11/02 I8 05 - <br /> Purgeable Hydrocarbons 18000 500 ug/l 10 2060205 06/17/02 06/17/02 DHS LUFT <br /> Surrogate a,a,a-Triuorotoluene 130% 60-140 <br /> MW-4 L206021-O5Water Sampled 06/10/0217 25 Received 06/11/02 18 05 <br /> Purgeable Hydrocarbons - 2400 - 50 ug/l 1 2060205 06/I7/02 06/17/02 DHS LUFT - <br /> Surrogate a a,a-Trtfluorotoluene 123% 60-140 " <br /> _MW-5(1_.206021-06)Water SamQled 06/10/02 14 02 Received 06/11/02 18 05 _- <br /> Purgeable Hydrocarbons - ND 50 ug/l 1 2060205 06/17/02 06/17/02 DHS LUFT <br /> Surrogate a,a,a-Trifluorotoluene 83% 60-140 11 " <br /> _MW-6(L206021-07)Water Sampled 06/10/02 14 25 Received 06/11/02 18 05 . <br /> Purgeable Hydrocarbons 190 50 ug/1 1 2060205 06/17/02 06/17/02 DHS LUFT <br /> =Surrogate a a,a-Triuorotoluene 103 -_-- <br /> MW-7 L206021-08 Water Sampled 06/10/02 15 31 Received 06/11/02 18 05 _ <br /> Purgeable Hydrocarbons ND 50 ugA 1 2060205 06/17/02 06/17/02 DHS LUFT —, <br /> Surrogate a,a,a-Trtfluorotoluene= - -- 101 %— -----60=140 <br /> 0 <br /> 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 76 of 103 <br />