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1 <br /> Sequoia $19 Striker Avenue Suite$ <br /> 1 q Sacramento C2 49600 <br /> (916)921-4600 <br /> 921 <br /> Analytical <br /> FAX equ alabsc00 <br /> www sequolalabs com <br /> D K Barber PE&Associates Project Westem Oil&Spread-Acampo 5209545 <br /> 623 Camellia Way Protect Number 3rd Qtr 2002-GW Reported <br /> Lodi CA,95242 Project Manager Dan Barber 10/11/02 15 31 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> IlAnalyie Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> 1 Batch 2100131-EPA 5030E (P/T) <br /> Blank(2100131-BLK1) Prepared&Analyzed 10/08/02 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> 'Benzene ND 050 <br /> Toluene ND 050 <br /> Ethylbenzene ND 050 <br /> Xylenes(tow) ND 050 <br /> Surrogate a a a Tnfluorotoluene 11 1 100 111 60 140 <br /> BIank(2100131-BLK2) Prepared&Analyzed 10/10/02 <br /> 'Purgeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> wes <br /> benzene ND 050(total) ND 050 <br /> Surrogate a a a Tnfluorotoluene 103 100 103 60-140 <br /> Laboratory Control Sample(2100131-BSI) Prepared&Analyzed 10/08/02 <br /> Benzene 9 8l 050 ug/l 100 98 70-130 <br /> Toluene 101 050 too 101 70-130 <br /> Ethylbenzene 914 050 100 91 70 130 <br /> Xylenes(total) 288 050 300 96 70-130 <br /> Surrogate a a a Tnfluorotoluene 106 100 106 60 140 <br /> ' Laboratory Control Sample(2100131-BS2) Prepared&Analyzed 10/10/02 <br /> Benzene 100 050 ug/I 100 100 70430 <br /> Toluene tot 050 too 101 70-130 <br /> ' Ethylbenzene 908 050 100 91 70 130 <br /> Xylenes(total) 288 0 50 300 96 70-130 <br /> Surrogate a a a Tnfluorotoluene 101 100 101 60 140 <br /> 1 <br /> nota Analytical -Sacramento 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 6 of 9 <br />