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1 <br /> I <br /> Lancaster Analysis Report <br /> Laboratories <br /> I 2425 New HoVand P*e PD Bax 12425 Lsnta516r PA 17605.2425•717 656 2300 Fax 717 656-2661 www lancasterlabs corn <br /> Pase 2 of 4 <br /> I <br /> Quality Control Summary <br />' <br /> Client Name Chevron Group Number 976790 <br /> Reported 02/15/06 at 10 47 AT7 <br /> Sample Matrix Quality Control <br /> Unspiked (CfiTSPK) = the sample used in con,unctlon' with the mats x spike Background (BKG) m the sample used in corl3unctaon with the duplicate <br /> Me MSD MS/MSD RFD EKG DUP DUP Dup RPD <br /> Anal fiis Nan %REC %REc m e RFD MAX Conc one RPD ?�� <br /> TPH-GRO - Waters 119 63-154 <br />' BatCh number W060401AA sample number(s) 4"702346-4702352 UNSPK P701099 <br /> Methyl Tertiary Butyl Ether 98 69-127 <br /> 'Benzene 111 83-128 <br /> Trichloroethene 110 83-136 <br /> Toluene 110 83-127 <br /> I Tetrachloroethene lie 78-133 <br /> Ethylbenzene 108 82-139 <br /> Xylene (Total) 111 82-130 <br /> Batch number W060402AA Sample number(s) 4702353-4702354 UNSPK P704323 <br /> Methyl Tertiary Butyl Ether 114 111 69-127 1 30 <br />' Benzene 107 109 83-128 2 30 <br /> Teichloroethene 106 111 83-136 4 30 <br /> Toluene 105 106 83-127 1 30 <br /> Tetrachloreethene 113 112 78-133 1 30 <br /> Ethylbenzene 1C7 107 82-129 0 30 <br /> Xylene (Total) 107 109 82-130 3 30 <br /> Batch number Zo60412AA Sample numbers) 4702345 UNSPK P705561 <br /> Methyl Tertiary Butyl Ether 91 69-127 <br /> Benzene 100 63-126 <br /> Toluene 106 63-127 <br /> Ethylbenzene 99 82-129 <br /> Xylene (Total) 99 62-130 <br /> Surrogate Quality Control <br /> Surrogate recoveries whicR are outside of the QC window are confirmed <br /> unless attributed to dilution or otherwise notes on the Analysis Report <br /> Analysis Name TP11 by GC-FID (Waters) <br /> Batch number 060350006A hen 1 <br /> Chlorobenzene Orthoterp y <br /> 4702345 92 102 <br /> 4702347 89 93 <br /> 4702348 92 100 <br /> 4702349 45 47 <br /> 4702350 92 99 <br /> 4702351 98 100 <br /> 4702352 96 103 <br /> 4702353 84 93 <br /> 4702354 95 105 <br /> Blank 82 95 <br /> LCS 80 105 <br /> LCED 82 106 <br /> Limits 14-141 37-146 <br /> *-Outside of speclficatlon <br /> (1) The result for one or both determmattonS was less than five t1meS the LOQ <br /> I (2) The background result was more than four times the spike added <br />