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HOUSTON LABORATORY <br /> 8880 INTERCHANGE DRIVE <br /> HOUSTON TEXAS 77054 <br /> Quality Control Report (713)660 0901 <br /> EXXON Company U S A <br /> UP3708 1 <br /> Analysis Volatile Organics by Method 82608 <br /> ethod SW8260B WorkOrder 01050390 <br /> Lab Batch ID R35348 <br /> Method Blank Samples In Analytical Batch <br /> RuniD Q )105153 673316 Units ug/L <br /> �nalysis Date 05/16/2001 4 08Analyst JG l=ab Sample ID Client Sample ID <br /> 01050390-018 <br /> MW-1 <br /> -- Analyte — — Result Rep Limit, <br /> Methyl tertat�ether_ <br /> - Surr 1 2 Dchloroethar)e-d4 5 <br /> ' Surr 4-Bromcfluorobenzene - —�-- 98 0+ fit 1191 <br /> Surr 7aluene-d8 96 0 78-123 <br /> 108 0 74-122 <br /> Laborato Control Sample iLCS} <br /> Run1D 051513 67331,5 Units u91L <br /> Analysis Date 35/16/2001 3 19 Analyst JC <br /> Analyte - - - - - - - -- - - - <br /> Spike Result Percent Lower TUpper <br /> Added Recovery Limit Limit <br /> 1 1-Dlchleroethene- - - - -- <br /> Benzene 50f - — 49 <br /> 98 61 145 <br /> _ <br /> 54 5C 100 76 127 <br /> Chlorobenzene 50 49 - — - <br /> _ _ 98 75 130, <br /> Toluene - - - - 50- 48'- <br /> 96 76 125 <br /> Tnchloroeihene 50 49 <br /> - 98 71 120 <br /> Matrix S ikeMS !Matrix Spike Duplicate MSD <br /> Sampie Spiked 01054390-01 <br /> RunlD Q_0105158-873330 Units ug/L <br /> Analysis Date C5I16,2001 8 53 AnaiysI JC <br /> Analyte �- -SampleMS MS Result MS °�o -- - <br /> High <br /> RPD Low <br /> MSD MSD Result MSD °% RPD Hi <br /> Result Spike Recovery Spike Recovery Limit Ltmit Limit <br /> I Added j Added <br /> 1-Dichloroethene - -- - - - - - —-L - - - <br /> NDi 1001 I - - _ _ <br /> enzsne _ - - --�- - - 97 97 1001 96- - 96 1 14 38 172 <br /> ND 100 100 <br /> Chlarobe100 100" 100 100 01 11 66 134 <br /> nzene - -- - - NDI 1001 - - - - - -��-- - - -- _ _ __ <br /> - - - - __ '�9798 98 1001 100, 21 13 67 115 <br /> oluene ND 100 -- - - � - --100-- - -- _ <br /> nchloroethene - -- ` 97 100" 981 981 1 13 59 125 <br /> --- ND- 100 97, -- 97I 100 -- --- - - - - <br /> -- --- -- - - _ - _ -1 - 971 97 01 14 51 134 <br /> leers NDIU -Not Detected at the Reporting Limit -- � - - - - - - - _ <br /> B -Analyte detected In the associated Method Blank D Interference - <br /> � - Estimated value between MDL and PQL - Recovery Unreportable due to DNutton <br /> Recove <br /> The percent recoveries for QC samples are correct as reported Due to significant figures nd Outside Advisable QC L mils <br /> rounding the reported RPD may differ from the displayed RPD values but is Correct as reported 171050330 Page 2 1 <br /> �IZ3r01 8 18 20 AM <br />