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404 N IMget Lane <br /> ® S e qu o 1 a Walnut Geek CA 94598 <br /> (925)988-9WO <br /> . „ <br /> - Analytical FAX(925)988-9673 <br /> a <br /> AML <br /> ether Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 17-tan-00 09 02 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lunits RPD Linut Notes <br /> Batch OA06002. Prepared 06-Jan-00 Using EPA 5030B [PITS <br /> Blank(OA06002-BLKI) <br /> Purgeable Hydrocarbons ND 50 ug/i <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Nylenes(total) ND 050 " <br /> Surrogate aaa-Trifluoroioluene 359 300 120 70.130 <br /> LCS (OA06002-BS1) <br /> Benzene 193 050 ugll 200 965 70-130 <br /> Toluene 209 0 50 20 0 104 70-130 <br /> Ethvlbenzene 215 0 50 200 108 70 130 <br /> eves(total) 647 050 600 108 70-130 <br /> urrogate aao-Trilluoroioluene 304 300 101 70-130 <br /> Matrrt Spike(OA06002-MSI) Source W001059-02 <br /> Benzene 204 ON ugll 200 ND 102 70-130 <br /> Toluene 204 0 50 200 ND 102 70-130 <br /> Ethylbenzene 219 0 50 200 ND 109 70-130 <br /> Xylenes(total) 656 030 60 0 ND 109 70-130 <br /> Surrogate µaa-Tri luorotoluene 305 300 102 70-130 <br /> Matrix Spike Dup(OA06002,IISD1) Source W001059-02 <br /> Benzene 215 0 50 ug/l 200 ND 108 70-130 5 25 20 <br /> Toluene 21 4 0 50 200 ND 107 70-130 478 20 <br /> Ethylbenzene 219 050 20 0 ND 109 70-130 0 20 <br /> Xylenes(total) 65 5 0 3G 600 ND 109 70-130 0 153 20 <br /> i <br /> Surrogate asa-Tris luorotoluene 308 300 103 70-130 <br /> equola Analytical-Walnut Crcck The results in tins report apply to the samples mralyzed i n accordmce with the than of <br /> cusro4 document Thus analytical report must be reproduced in its entirety <br /> 1 <br /> � an emp, a story lector Page 6 of 8 <br />