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Lancaster Laboratories Page 1 of 2 <br /> whe6uga i rya on€ ro, Summary <br /> Client: Name Chevron Products Company Group Number- 803937 <br /> Reported 04/19/02 at 09 50 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LC3 LCSD LC3/LCSD <br /> Analysis Name Result MDL Units %REC %REC Limx is RPD RPD Max <br /> Batch number 02105A51A Sample number(s) 3805171-3805174 <br /> Benzene N D 0 5 ug/l 102 99 80-118 3 30 <br /> Toluene N D. 0 5 ug/1 103 101 82-119 2 30 <br /> Ethylbenzene N D 0 5 ug/1 104 101 81-119 3 30 <br /> Total Xylenes N D 1 5 ug/l 105 102 82-120 3 30 <br /> Methyl tent-Butyl Ether N D 2 5 ug/l - 101 - - 102 -79-127 1 - 30 - - <br /> TPH-GRO - Waters N D 50 ug/l 105 115 76-126 9 30 <br /> Batch number V021062AB Sample number(s) 3805173 <br /> Methyl t-butyl ether N D 2 ug/l 107 77-127 <br /> Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BKG DUP DUP DUP <br /> RPD <br /> AnalY83.8 Name %REC %REC Limits RPD 14&X Cana Conc RPD Max <br /> Batch number 0210SA51A Sample riumber(s) 3805171-3605174 <br /> Benzene 109 77-131 <br /> Toluene 110 80-128 <br /> Ethylbenzene 111 76-132 . <br /> Total Xylenes 111 76-132 <br /> Methyl text-Butyl Ether 115 61-144 <br /> TPH-GRO - Waters 104 74-132 <br /> Batch number V021062AB Sample number(s) 3805173 <br /> Methyl t-butyl ether 103 106 69-134 3 30 <br /> Surrogate Quality Control <br /> Analysis Name TPH-GRO - Waters <br /> Batch number 02105ASIA <br /> Trifluorotoluene-F Txxfluorotoluene-P <br /> 3805171 98 96 <br /> 3805172 100 96 <br /> 3805173 99 96 <br /> 3805174 99 97 <br /> Blank 96 95 <br /> LCS 112 96 <br /> LCSD 112 97 <br /> MS 110 97 <br /> Limits 67-135 71-130 Y <br /> Analysis Name MTBE by GC/MS (water) <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 O <br /> Lancaster Laboratories Inc <br /> MEMBER 2425 New Holland Pike <br /> PO Box 12425 <br /> Lancaster 17505 2425 <br /> 717-6 56 23D000 Fax 71J-617-6 <br /> 56-2681 2216 Rev 9111100 <br />