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w f <br /> ep <br /> Analysis R ort <br /> r <br /> Lancaster Laboratories <br /> Where quality is a science <br /> Page 2 of 3 <br /> Quality Control Summary <br /> Client Name ChevronTexaco Group Number 829388 <br /> Reported 11/12/02 at 12 56 PM <br /> Sample Matrix Quality Control <br /> Ms MSD MS/MSD RPD BKG DUP DUP Dup <br /> RPD <br /> Analysis Name %REC RSC Limi s RPD MAX Cone Cone RPD Max <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02309A53B <br /> Trifluorotoluene-F <br /> 3933616 103 <br /> 3933617 106 <br /> 3933618 104 <br /> 3933619 100 <br /> Blank 105 <br /> LCS 101 <br /> LCSD 105 <br /> MS 107 <br /> Lim-its 57-146 <br /> nalysis Name BTEX + Oxygenates by 8260E <br /> dtch number N023051AB <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-de 4-Bromofluorobenzene <br /> 3933616 101 101 100 96 <br /> 3933618 100 99 98 95 <br /> Blank 100 99 100 97 <br /> LCS 94 99 103 105 <br /> MS 95 99 103 105 <br /> MSD 94 98 103 104 <br /> Limits 86-118 80-120 88-110 86-115 <br /> Analysis Name BTEX + Oxygenates by 8260B <br /> Batch number N023102AA <br /> Dibromofluoromethane 1,2-Dichloroethane-d4 Toluene-de 4-Bromofluorobenzene <br /> 3933617 98 98 100 96 <br /> Blank 98 98 100 97 <br /> LCS 95 99 104 106 <br /> MS 95 101 103 106 <br /> MSD 95 98 104 105 <br /> Limits 86-118 80-120 88-110 86-115 <br /> Analysis Name BTEX + Oxygenates by 82608 <br /> Batch number N023111AA <br /> Dibromofluoromethane 1,2-Dachloroethane-d4 Toluene-d8 4-Bromofluorobenzene <br /> 3933619 100 101 99 95 <br /> Blank 100 99 100 97 <br /> LCS 96 98 103 105 <br /> MS 96 96 103 107 <br /> *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> 02) The background result was more than four times the spike added <br /> Lancaster Iaboratones inc <br /> M E, M 13 E R 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster PA 17605 2425 <br /> 717 656 2300 Fax 717 656 2681 2216 Rev 9111/00 <br />