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444 N Wiget Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> 4 (925)988-%W <br /> Analytical FAX (925)988-9673 <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite 3 Project Number Unocal#0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Hardaig 09-Mar-00 10 44 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> RcpoMng Spike Source %REC RPD <br /> Analyte Result Lumt Units Level Result °/.REC Lumts RPD Lunit Notes <br /> Batch 0001003-EPA 5030B [Pffl <br /> Blank(0001003-BLKI) Prepared&Analyzed 01-Mar-00 <br /> Purgeable Hydrocarbons ND 50 ug11 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tern-butyl ether ND 25 " <br /> Surrogate aaa-Trty7uorotoluene 314 300 1018 70.130 <br /> LCS(0001003-BS1) Prepared&Analyzed 01-Mar-00 <br /> Benzene 227 050 uga 200 114 70-130 <br /> Toluene 229 0 50 200 114 70-130 <br /> Eth enzene 231 050 200 116 70-130 <br /> X (total) 669 050 600 lit 70-130 <br /> Surrogate aa,a-Trifluororoluene 290 300 967 70-130 <br /> Matrix Spike(0001003-MS1) Source W002605-01 Prepared&Analyzed 01-Mar-00 <br /> Benzene 213 050 ug/1 200 ND 106 70-130 <br /> Toluene 216 050 " 200 ND 108 70-130 <br /> Ethylbenzene 217 050 200 ND 109 70-130 <br /> Xylenes(total) 627 050 " 600 ND 105 70-130 <br /> Surrogate aaa-Tri luorotaluene 282 30.0 940 70.130 <br /> Matrtx Spike Dup(0001003-MSDJ) Source W002605-01 Prepared&Analyzed 01-Mar-00 <br /> Benzene 238 050 ug/1 200 ND 119 70-130 111 20 <br /> Toluene 239 050 200 ND 119 70-130 101 20 <br /> Ethylbenzene 238 050 200 ND 119 70-130 923 20 <br /> Xylenes(total) 685 050 600 ND 114 70-130 884 20 <br /> Surrogate aaa-Tr vorotohuene 288 " 300 960 70-130 <br /> SWa Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance Kith the chain of <br /> custody document This analytical report must be reproduced in its entirely <br /> Page 15 of 22 <br />