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Y <br /> I <br /> Lancastersis Re orf <br /> Laboratories A n a I y p <br /> 2425 New Holland Pike PO Banc 12425 Lancaster PA 17605-2425•717 656-2300 Fax 717-656-2681 Www Iamasterlabs Com <br /> I Page 3 of 4 <br /> Quality Control summary <br /> client Name ChevronTexaco Group Number 971036 <br /> Reported 12/23/05 at 09 40 AM <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 0535OA16A <br /> Trxfluorotoluene-F <br /> 4669695 90 <br /> Blank 93 <br /> LCS 94 <br /> LCSD 95 <br /> Ms 96 <br /> a <br /> Limits 63-135 <br /> Analysis Name PPL + Xylene (total) by 8260 <br /> Batch number W053521AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 4669695 90 86 89 90 <br /> 4669696 91 87 86 89 <br /> 4669697 92 88 68 89 <br /> 4669699 94 69 89 91 <br /> 4669700 92 89 66 90 <br /> 701 93 89 88 90 <br /> 49702 96 90 88 92 <br /> 703 94 87 89 91 <br /> 4669704 93 88 88 90 <br /> 4669705 94 88 66 90 <br /> Blank 89 88 89 89 <br /> LCS 91 Be 91 92 <br /> MS 91 91 90 91 <br /> MSD 90 91 41 92 <br /> Limps 80-116 77-113 80-113 78-113 <br /> Analysis Name PPL + Xylene (total) by 8260 <br /> Batch number W053521AB <br /> Dibromcfluororrrethane 1,2-Dichloroethane-d4 Toluene-de 4-Brvmofluorabenzene <br /> 4669706 93 90 87 89 <br /> 4669707 96 69 89 92 <br /> 4669708 96 Be 89 91 <br /> Blank 94 89 88 91 <br /> LCS 91 88 91 92 <br /> MS 91 91 90 91 <br /> MSD 90 91 91 92 <br /> Limits 80-116 77-113 80-113 78-113 <br /> Analysis Name PPL + Xylene (total) by 8260 <br /> Batch number W053521AC <br /> Dxbromofluoromethane 1,2-Dachloroethane-d4 Toluene-dB 4-Bromofluorobenzene <br /> 4669698 91 88 90 91 <br /> Blank 92 88 88 90 <br /> LCS 91 Be 91 92 <br /> Ms 91 91 90 91 <br /> MSD 90 91 91 92 <br /> *-Outside of specification <br /> The result for one or both determinations was less than five times the LOQ <br /> The background result was more than four times the spike added <br />