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1� <br />1 <br />Lancaster <br />Laboratories <br />Quality Control Summary <br />Client Name ChevronTexaco Group Number 837261 <br />Reported 01/23/03 at 02 23 PM <br />' Surrogate Quality Control <br />Limits 72-128 <br />'Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030102AA <br />Dibromofluoromethane 1 2-Dichloroethane-d4 Toluene -d8 <br />37/5497 IUl lUU <br />3975446 98 97 <br />Blank 99 97 <br />LCS 97 99 <br />98 99 <br />97 99 <br />Limits 86-118 80-120 <br />Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030102AB <br />Dibromofluoromethane 1,2-Dichloroethane-d4 <br />3975448 99 97 <br />Blank 101 96 <br />LCS 97 99 <br />Ms 98 99 <br />MSD 97 99 <br />' Limits 86-118 80-120 <br />Analysis Name BTEX + Oxygenates by 8260E <br />Batch number N030102AC <br />Dibromofluoromethane 1 2-Dichloroethane-d4 <br />3975449 97 97 <br />Blank 96 96 <br />'LCS 97 99 <br />MS 98 99 <br />MSD 97 99 <br />Limits 86-118 80-120 <br />' Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030121AA <br />Page 4 of 5 <br />4-Bromofluorobenzene <br />96 <br />3975445 <br />101 <br />94 <br />3975446 <br />102 <br />99 <br />99 <br />102 <br />'3975447 <br />3975448 <br />99 <br />Toluene -d8 <br />Blank <br />96 <br />95 <br />LCS <br />98 <br />99 <br />MS <br />99 <br />' <br />MSD <br />100 <br />Limits 72-128 <br />'Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030102AA <br />Dibromofluoromethane 1 2-Dichloroethane-d4 Toluene -d8 <br />37/5497 IUl lUU <br />3975446 98 97 <br />Blank 99 97 <br />LCS 97 99 <br />98 99 <br />97 99 <br />Limits 86-118 80-120 <br />Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030102AB <br />Dibromofluoromethane 1,2-Dichloroethane-d4 <br />3975448 99 97 <br />Blank 101 96 <br />LCS 97 99 <br />Ms 98 99 <br />MSD 97 99 <br />' Limits 86-118 80-120 <br />Analysis Name BTEX + Oxygenates by 8260E <br />Batch number N030102AC <br />Dibromofluoromethane 1 2-Dichloroethane-d4 <br />3975449 97 97 <br />Blank 96 96 <br />'LCS 97 99 <br />MS 98 99 <br />MSD 97 99 <br />Limits 86-118 80-120 <br />' Analysis Name BTEX + Oxygenates by 8260B <br />Batch number N030121AA <br />Page 4 of 5 <br />4-Bromofluorobenzene <br />96 <br />93 <br />97 <br />94 <br />97 <br />93 <br />99 <br />99 <br />99 <br />101 <br />100 <br />100 <br />88-110 86-115 <br />Toluene -d8 4-Bromofluorobenzene <br />98 <br />94 <br />96 <br />93 <br />99 <br />99 <br />99 <br />101 <br />100 <br />100 <br />88-110 <br />86-115 <br />Toluene -d8 <br />4-Bromofluorobenzene <br />96 <br />95 <br />98 <br />96 <br />99 <br />99 <br />99 <br />101 <br />100 <br />100 <br />88-110 86-115 <br />' *- Outside of specification <br />The result for one or both determinations was less than five times the LOQ <br />qjFrMe background result was more than four times the spike added <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 />2216 Rev 1012102 <br />