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Lancaster <br /> r Laboratories Analysis Report <br /> 2425 New Holland P;ke PO Box 12425 Lancaster PA 17605-2425 717 656 2300 Fax 717 656 2661•www lancasterlabs com <br /> Page 3 of 7 <br /> Quality Control Summary <br /> Client Name ChevronTexaco C/O Cambria Group Number 975959 <br /> Reported 02/08/06 at 10 20 AM <br /> Sample Matrix Quality Control <br /> Unspiked (UNSPK) = the sample used in conjunction with the matrix spike <br /> Background (BKG) = the sample used in con3unctxon with the duplicate <br /> MS MSD MS/MSD RPD BKG DUP DUP Dup RPD <br /> Analysxg Name %REC %REC Limits RPD MAX Cone Conc RPD Max <br /> Batch number 06027AO7B Sample number(s1 4697543-4697549 UNSPK P695376 <br /> TPH-GRO - Waters 116 63-154 <br /> Batch number 06027A34A Sample number(s) 4697524-4697532 UNSPK P689684 <br /> TPH-GRO - Soils 80 88 39-118 10 30 <br /> Batch number 06027A34B Sample number(s) 4697552-4697553 UNSPK P689684 <br /> TPH-GRO - Soils 80 88 39-118 10 30 <br /> Batch number 06031A07A Sample number(s) 4697550-4697551 U14SPK P698407 <br /> TPH-GRO - Waters 109 63-154 <br /> Batch number A060311AA Sample number(S) 4697524-4697540 UNSPK 4697525 <br /> Methyl Tertiary Butyl Ether 100 103 47-130 4 30 <br /> di-Isopropyl ether 100 101 56-130 2 30 <br /> Ethyl t-butyl ether 96 98 57-122 3 30 <br /> t-Amyl methyl ether 98 100 58-119 3 30 <br /> t-Butyl alcohol 87 93 51-134 8 30 <br /> . Benzene 98 98 67-123 1 30 <br /> 1 2-Pichloroethane 106 106 62-130 2 30 <br /> Toluene 91 91 49-132 1 30 <br /> 1,2-Dibromoethane 93 98 62-116 6 30 <br /> Ethylbenzene 90 91 50-127 2 30 <br /> Ethanol 81 88 1-152 9 30 <br /> Xylene (Total) 89 90 44-127 2 30 <br /> Batch number A060321AA Sample number(s) 4697541-4697542,4697552-4697553 UNSPK 4697541 <br /> Methyl Tertiary Butyl Ether 92 93 47-130 1 30 <br /> di-Isopropyl ether 96 99 56-130 3 30 <br /> Ethyl t-butyl ether a8 92 57-122 4 30 <br /> t-Amyl methyl ether 89 91 58-119 2 30 <br /> t-Butyl alcohol 83 93 51-134 12 30 <br /> Benzene 95 97 67-123 2 30 <br /> 1,2-Dzchloroethane 105 105 62-130 1 30 <br /> Toluene 87 86 49-132 1 30 <br /> 1,2-Dibromoethane 87 88 62-116 1 30 <br /> Ethylbenzene 89 90 50-127 1 30 <br /> Ethanol 47 54 1-152 15 30 <br /> Xylene (Total) 88 86 44-127 0 30 <br /> Batch number P060333AA Sample number(s) 4697543-4697545 UNSPK P698458 <br /> Ethanol 82 86 26-162 5 30 <br /> Methyl Tertiary Butyl Ether 95 94 69-134 0 30 <br /> di-Isopropyl ether 82 81 75-130 1 30 <br /> Ethyl t-butyl ether 86 86 78-119 1 30 <br /> t-Amyl methyl ether 93 93 72-125 0 30 <br /> t-Butyl alcohol 87 87 56-134 1 30 <br /> Benzene 93 92 83-128 1 30 <br /> 1,2-0ichloroethane 95 94 70-143 2 30 <br /> Toluene 96 94 83-127 2 30 <br /> 1 2-Dibromoethane 93 94 78-120 1 30 <br /> Ethylbenzene 97 97 82-129 0 30 <br /> *-Outside of specification <br /> (1) 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 />