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' <br /> TesU merica <br /> ANALYTICAL TESTING CORPORATION <br /> 2960 FOSTER CREIGHTON DRIVE • NASHVILLE TENNESSEE 37204 <br /> 800-765-0980 • 615-726-3404 FAX <br /> ROJECT QUALITY CONTROL DATA <br /> roj ect Number: <br /> Project Name: EXXONMOBIL 7-3942 <br /> lage: I <br /> aboratory Receipt Date: 6/30/04 <br /> Matrix Spike Recovery <br /> Note If Blank is referenced as the sample spiked, insufficient volume was received for the defined analytical batch for <br /> MS/MSD analysis on an true sample matrix Laboratory reagent water was used for QC purposes <br /> Analyte units Orig Val. MS Val Spike Conc Recovery Target Range Q C Batch Spike Sample <br /> --------------- ------- ---------- --------- ---------- --------- ----------- <br /> I <br /> **UST ANALYSIS** <br /> Benzene mg/1 < 0 00050 0 0531 0 0500 1D6 53 - 159 4392 04-A100607 <br /> Toluene mg/1 s 0 0005 0 0518 0 0500 104 54 - 156 4392 04-A100607 <br /> Ethylbenzene mg/l � 0 0005 0 0522 0 0500 104 50 - 159 4392 04-A100607 <br />' Xylenes (Total) mg/1 c 3 0005 0 0973 0 100 97 53 151 4392 04-A100607 <br /> TPH (Gasoline Range) mg/1 c 0 0500 0 865 1 00 86 70 - 157 4392 04-AlOO607 <br /> BTEX/GRO Surr , a,a,a-TFT % Recovery 92 70 124 4392 <br /> VOA Surr 1,2-DCA-d4 % Rec 105 71 - 128 7281 <br /> VOA Surr Toluene-d8 % Rec 107 77 - 119 7281 <br /> VOA Surr, 4-BFB % Rec 96 79 - 123 7281 <br /> VOA Surr, DBFM % Rec 111 78 - 124 7281 <br /> **METALS** <br /> Arsenic mg/l 0 151 0 210 0 0500 118 80 - 120 2454 '100625 <br /> Barium mg/l 0 802 2 91 2 00 105 80 - 120 2454 '100625 <br /> Cadmium mg/l 0 0010 0 0510 0 0500 102 80 - 120 2454 '100625 <br /> Chromium mg/l 0 0050 0 203 0 200 102 80 - 120 2454 '100625 <br /> Chromium, Hexavalent mg/l 0 0100 0 102 0 100 102 80 - 120 2785 04-A100625 <br /> Copper mg/l 0 0100 0 255 0 250 102 80 - 120 2454 '100625 <br /> Iron mg/1 1 82 2 92 1 00 110 80 - 120 2454 '100625 <br /> Iron, Dissolved mg/l c 0 0500 0 970 1 00 97 80 - 120 4064 1100672 <br /> Lead mg/l K 0 0050 0 0520 0 0500 104 80 - 120 2454 '100625 <br /> Manganese mg/l 2 41 2 91 0 500 100 80 - 120 2454 '100625 <br /> Selenium mg/1 0 0100 0 0630 0 0500 126# 80 - 120 2454 1100625 <br /> Project QC continued <br /> www lestamericainc com <br /> TestAmerico Analytical Testing Corporation I TestAmenca Drilling Corporation I TestAmenco Air Emission Corporation <br />