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-- - - _Sequoia _ Walnut eek CA%4 98 <br /> -(925)988-9600— <br /> Analytical FAX`92$'988-9673 <br /> """W sequolalahs cl�;.n <br /> Gettler Ryan,Inc -Dublin Project Unocal t <br /> 4 <br /> 6747 Sierra Court Suite J Project Number Unocal# 1205 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 08-Feb-Ol 07 55 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> --- -- -Sequoia Analytical -Walnut Creek - -- - -- <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1A22004-EPA 5030B[Pffl i <br /> Blank(1A22004-BL.KI) Prepared&Analyzed 20=Jan-Ol <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) ND 0 50 " <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate s a a-DvJ orotohiew 31 4 300 105 70-130 <br /> LCS(1A22004-BSI) Prepared&Analyzed 20-Jan-01 <br /> Benzene 1 g 3 0 50 ug/l 200 915 70-130 <br /> Toluene 193 050 200 965 70-130 <br /> Ethylbenzene 207 9 50 200 104 70-130 <br /> Xylenes(total) fit 6 0 50 600 103 70-130 <br /> Surrogate aqa-Witorntohrene 296 " 300 9&7 70-130 <br /> Matra Spike(1A22004-MS1) Source W101455-02 Prepared&Analyzed 20-Jan-01 <br /> Benzene 192 0 50 u9/1 200 ND 960 - 70-130 <br /> Toluene 204 050 200 ND 102 70-130 <br /> Ethylbenzene 214 0 50 200 ND 107 70-130 <br /> Xylenes(total) 646 0 50 600 1 l 106 70-130 <br /> Surrogate aaa-Trrllaorotoluene 315 300 108 70-130 <br /> Matrix Spike Dup(1A22004-MSDI) Source W101455-02 Prepared&Analyzed 20-Jan-01 <br /> Benzene 1.9 2 0 50 ug/1 200 ND 96 0 70-130 0 20 <br /> Tome 205 050 " 200 ND 103 70-130 0 489 20 <br /> Ethylbenzene 214 0 50 " 200 Y ND 107 70-130 0 20 <br /> Xylenes(tel) 657 0 50 600 1 1 108 70-130 169 20 <br /> Surrogate aan-Triiluororoluene 315 30.0 105 70-130 <br /> Sequoia Analytical-Walnut Creek The results in dos report apply to the samples aral5zed in accordance with the char <br /> custody document,Thus analytical report mast be reprodxced in its e" <br /> Page I1 of 14 <br />