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HOUSTON LABORATORY <br /> 8880 INTERCHANGEEDRIVEDRIVE <br /> O HOUSTON TEXAS 77054 <br /> k <br /> (713)560 0901 <br /> Quality Control Report <br /> EXXON Company U S A <br /> U P 3942 <br /> Inalysis Purgeable Aromatics WorkOrder 00120503 <br /> ethod SW8021 B Lab Batch ID R26367 <br /> Method Blank Samples in Analytical Batch <br /> RunlD HP_R_001215A-500367 Units ug/L Lab Sample ID Client Sample ID <br /> alysis Date 12/15/2000 11 06 Analyst D-R 00120503-01A MW-1 <br /> 00120503-02A f W-1 <br /> 00120503-03A MW-7 <br /> Analyte Y Result Rep Llmlt 00120503 04A MW-4 <br /> Benzene _ NO 0 50-- - 00120503-05A MW-2 <br /> thylbenzene _ - - - ND - 0 5050 00120503-07A UVB MW-2 <br /> IVlethyl tart butyl ether __ _� _ - ND_-- 050, 00120503-08A UVB MW-1 <br /> ' Toluene _� -� F-�— - ND— _05- 00120503-09A V-2 <br /> m p-Xylene ND 0 501 <br /> o-X Eene No _050--L 00120503-10A MW-3 <br /> [Xylenes T_otat T— —__— NDi 0 501 <br /> Surr 1 4-Di luorobenzene --_ 1032 72-137' <br /> Suri 4_Braraofluorobenzene 96 2' 48-1561 <br /> Laboratory Control Sample{LCS) <br /> ' RunlD HP_R_001215A 509363 Units ug/L <br /> Analysis Date 12/15/2000 10 15 Analyst D-R <br /> Analyte W Spike Reult sPercent Lower Upper <br /> Added Recovery Limit Limit <br /> Benzene _ - - -- 501 50,-- -v 1001-� 70 - 1301 <br /> Ethylbenzene 501 50', 99� 701 1301 <br /> Methyl tert-butyl ether 50' 47' 94 701 1301 <br /> Toluene _- ---- �-501 51 101, 701 1301 <br /> m p-Xylene 1001 991 -- 99 -- 70. — 1301 <br /> o-Xylene 501 49� 981- 701 1301 <br /> Xylenes Total -- ---- --� 1501 1481 - 99 701 1301 <br /> f Matrix Spike (MS)1 Matrix Spike Duplicate (MSD) <br /> f Sample Spiked 00120503-01 <br />[ RunlD HP_R_001215A-509410 Units ug/L <br /> Analysis Date 12/15/2000 21 12 Analyst D-R <br /> to Sample MS ; MS Result MS %' MSD MSD Result MSD % RPD RPD Low High <br /> Result Sptke Recovery Spike Recovery 1 Limit ' Limit Limit <br /> Added Added ; <br /> ND 20 21 -- 106r 20 21 107 08261 211 32 164, <br /> ND 20 21 105 20 22 109 361 191 52, 1421 <br /> ND 20 18!-- --88 6 20 21 1041 16 4 W 20� 39! 1501 <br /> Q� U-Not Detected at the Reporting Limit MI -Matrix interference <br />�- nalyte detected in the associated Method Blank D-Recovery Unreportable due to Dilution <br /> i <br /> timated value between MDL and PQL "-Recovery Outside Advisable QC Limits <br /> or QC samples are correct as reported Due to significant figures and 00920503 Page 24 <br /> D may differ from the displayed RPO values but Is correct as reported 1/2101903 51 AM <br />