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a Lancaster <br /> Laboratories <br /> Page 3 of 4 <br /> Quality Control Summary <br /> Client Dame ChevronTexaco <br /> Group Number 872526 <br /> Reported ll/GV/03 at 10 50 AM <br />' SamPle Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup <br />' Analysis Nam6 %REC 9imiRPD <br /> Lts MAX Conc Conc RPD <br /> t-Amyl methyl ether 96 9b6 0 77-117 0 30 Max <br /> t-Butyl alcohol 104 104 44-150 0 30 <br /> Benzene 101 101 83-128 1 30 <br />' 1,2-1)zchloroethane 96 97 73-136 1 30 <br /> Toluene 99 100 83-127 1 30 <br /> 1,2-Dibromoethane 93 94 78-120 1 30 <br /> Ethylbenzene 102 103 82-129 1 30 <br /> Xylene (Total) 100 102 82-130 2 30 <br /> t <br />' Surrogate Quality Control <br /> Analysis Name TPH-GRO - waters <br /> Batch number 03302A55A <br /> Trifluorotoluene-F <br />' 4152395 74 <br /> 4152396 74 <br /> 4152397 74 <br />' 4152398 74 <br /> 4152399 75 <br /> Blank 75 <br /> LCS 82 <br /> LCSD 76 <br />' MS 80 <br /> Limits 57-146 <br />' Analysis Name Methanol and Ethanol <br /> Batch number 033070007A <br /> Acetone <br /> 4152395 108 <br />' 4152396 106 <br /> 4152397 103 <br /> 4152398 109 <br /> 4152399 106 <br /> Blank 103 <br /> LCS 104 <br /> MS 99 <br /> MSD 102 <br /> Limits 72-128 <br /> Analysis Name BTEX+5 Oxygenates+EDC+EDB+ETOH <br /> *-Outside of specification <br /> #0(I) The result for one or both determinations was less than five times the LOQ <br /> 2) The background result was more than four times the spike added <br /> 1 <br /> Lancaster Laboratories Inc <br /> M E M B E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 <br />