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814 SentAve Ste 8 <br /> Sequoia Sacramento <br /> CA 95834 <br /> ,!Z� A n alyti cal (916)921 96(10 <br /> FAX(916)921 0100 <br /> www soquoialabs com <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210010 <br /> 6747 Sierra Court, Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10/14/02 18 46 <br /> ' Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2100111 - EPA 5030B (P/T] _ �t <br /> 1 <br /> Matrix Spike Dup (2100111-MSDI) _ Source S210010-17_ Prepared&Analyzed 10/08/02 <br /> Benzene 534 0 50 ug/1 25 0 33 82 60-140 2 25 <br /> Chlorobenzene 25 2 050 25 0 ND 101 60-140 0 25 0 <br /> IJ-Dichloroethene 294 050 250 ND 118 60-140 07 25 <br /> Toluene 38 8 050 250 18 83 60-140 03 25 <br /> Trichloroethene 21 9 050 250 ND 86 60-140 4 25 <br /> Surrogate Dibromofluoromethane 286 250 114 70430 <br /> Surrogate 1,2-DCA-d4 306 250 112 70-130 <br /> Surrogate Toluene-d8 278 250 111 70-130 <br /> Surrogate 4-BFB 263 250 105 70-130 <br /> Batch 2100173- EPA 5030B [PIT] <br /> Blank(2100173-BLK1) Prepared&Analyzed 10/09/02 <br /> Benzene NI) 050 ug/1 <br /> $romobenzene ND 0 50 " <br /> Bromochloromethane ND 0 50 <br /> w <br /> Broniodichloromethane ND 050 <br /> Bromoforni --- ND O 50 " -- - -_ - -- - -- --- — <br /> $romomethane ND 1 0 <br /> n-Butylbenzene ND 0 50 " -- -- -- — - - <br /> sec-Butyl benzene ND 050 _ <br /> - tert-Butylbenzene - - T ND~ --- 050 - <br /> Carbon tetrachloride ND 050 " <br /> Chlorobenzene ND 0_5_0 ' <br /> Chloroethane __.....__..,_....,._ ..._..... ..�_._._ .. ._._ _ ND ... ..... -D 50•... __� ..� _ _�.__ �___ .�_ ...� __. _-.. .� ._.._�-.._. .. ....., ___ _...� � .,.._.r.._ <br /> Chloroform ND 050 +� <br /> Chloromethane ND 0 50 - - <br /> 2-Chlorotoluene ND 0 50 " <br /> 4-Chlorotoluene ND 050 <br /> Dibromochloromethane ND 050 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 " <br /> Dibromomethane ND 0 50 <br /> 1,2-Dtbrorno-3-chloropropane ND 10 - <br /> -_1,2-Dichlorobenzene _ T _ _ _ ND _ _ 050 <br /> - 1,3-Dichlorobenzene ND 0 50 <br /> Sequoia Analytical - Sacramento The results in this r eporl apply to the samples analyzed in accordance with the chat,,of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in as entirety <br /> Page 115 of 119 <br />