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HOUSTON LABORATORY <br /> 8889 INTERCHANGEDRIVE <br /> HOUSTON TEXAS 77054 <br /> J (7131 660 9901 <br /> Quality Control Report <br /> EXXON Company U S A <br /> UR3708 <br /> Inallysis volatile Organics by Method 82608 WorkOrder 00110263 <br /> Method SW8260B Lab Batch ID R24773 <br /> Method Blank Samples In Analytical Satoh <br /> unlD _7c1 +sB 47782 Units ugrL Lab Sample ED Client SampEe 1D <br />�nalysls Date 1 1,1712C00 1 13 Analyst JC 00110253-01B MW-1 <br /> 00110263 02B MW-4 <br /> 001 10263 03B MW-5 <br /> 00110263-04B MW-6 <br /> Analyte _ Result Rep Limit <br /> 04110263-OSB MW-7 <br /> Methyl tert butyl ether ND 5 0 <br /> S_urr 1 2_pichiamathane-d4 960 62119104110263-06B MW-8 <br /> Surr _4-Bi flucrobenzene 1060, 78-123 00110263-07B MW 9 <br /> Surf Toluene d8 __ 94 0 -74-122 00110263-08B MW-10 <br /> Laborato Control Sam le L.CS <br /> Runl[7 )__001116B-477871 Units ugrL <br /> Analysis Date 11712000 0 09 Analyst JC <br /> Analyte Spike Result Percent Lower Upper <br /> Added Recovery Limit Limit <br /> 1 1-Dichloroethene 50 56 112 61 145 <br /> Benzene -- 50' 53 106 76 127 <br /> Chlcraberizene 50 5C 100 75 1301 <br /> Toluene 50 50 100 76 125 <br /> Trichloroethene 50 50 100 71 120 <br /> Matrix Spike JMSJ1 Matrix Spike Du Itcate MSD <br /> Sample Spiked 00110303-C2 <br /> Run1D 0_0o1 11613-477885 Units ugfL <br /> Analysis Date 11/17/2000 8 18 Analyst JC <br /> Analyte Sample MS MS Result MS % MSD MSD Result MSD % RPD RPD Low High <br /> Result Splice Recovery Spike Recovery Limit Limit I Limit <br /> Added Added <br /> 1-Dlchloroethene ND 2500 2900 1161 2500 - -2800 112' 4' 14, 381 1721 <br /> nzene 18000 2500 200001 801 2500 20000 80' 0 _ 11 661 134 <br /> larabenzene No 2500 2600, 104 2500' 2500 1001 41 13 67 1151 <br /> Toluene 9600 25001 120001 96� 2500 120001 _ 961 0' 131 591 125+ <br /> chloroethene ND 2500 27001 108; 2500' 2500 100 8 14 611 1341 <br /> lore's NDIU Not Detected at the Reporting Limit Recovery Outside Advisable QC Limits <br /> B-Analyte detected in the associated Method Blank D - Recovery Unreportable due to Dilution <br /> J -Estimated value between MDL and PQL W -Matrix Interference <br /> 00 110263 Page 13 <br /> 1 1121100 B 35 42 AM <br />