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TestAmerica <br />' ANALYTICAL TESTING CORPORATION <br /> 2960 FOSTER CREIGHTON DRIVE • NASHVILLE TENNsssu 37204 <br />' 800 765-0980 • 615-726-3404 FAX <br /> tROJECT QUALITY CONTROL DATA <br /> Project Number: <br /> roject Name: EXXONMOBIL 7-3942 <br /> age: I <br /> aboratory Receipt Date: I2/ 7/04 <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 Orrg Val MS Val- Spike Conc Recovery Target Range Q C Batch spike Sample <br /> **UST ANALYSIS•* <br /> Methyl-t-butylether mg/l 0 0336 0 0809 0 0500 95 36 - 159 720 '190794 <br /> BTEX/GRO Surr a,a,a-TFT Qr Recovery 186 69 - 132 720 <br />' **METALS*• <br /> Ma -60# 75 125 189973 <br /> nganese, Dissolved mg/l 19 3 19 0 0 500 <br /> - 791 <br />' Matrix spike Duplicate <br /> Analyte units prig Val Duplicate RPD Limit Q C Batch <br /> --------------- ------- ---------- ---------- ---------- ----- ---------- <br /> **UST PARAMETERS** <br /> Methyl-t-butylether mg/l 0 0609 0 0800 1 12 34 720 <br /> BTEX/GRO Surr , a,a,a-TFT t Recovery 198 720 <br />' **METALS** <br /> Manganese, Dissolved mg/l 19 D 19 2 1 0S 20 791 <br /> Manganese Dissolved mg/l 3 20 3 12 2 53 20 1870 <br /> Laboratory Control Data <br /> Analyte units - Known Val Analyzed Val !kRecovery Target Range Q C Batch <br /> 0 --------------- ------ ---------- ------------ ---------- ------------ --------- <br /> Pro}ect QC continued <br /> www testamencaine com <br /> TestAmerica Analytical Testing Corporation I TestAmerlca Drilling Corporation I TestAmenca Air Emission Corporation <br />