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OnMWORO- ECH CERTIFICATE OF ANALYSIS <br /> AnalytAcal ,Laf),C)lratcory <br /> Monday;May z7,2002 <br /> TO Tim Cuellar <br /> Advanced GeoEnvlronmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Aromatic Compound In Gasoline by GC/MS <br /> Sample Information <br /> Sample ID 15078-07 Sample Type. Grab <br /> Sample Description: VW 5d 05-03-02 Project Name: Stockton Fire Station <br /> Date,lTime Sampled 5/3/2002 11 52 00 AM Sample Matrix- Ground Water <br /> ANALYTICAL RESULT QA/QCREPORT t <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result ;Analyzed Blank Conc LCS% Cons MS% MSD RSD <br /> t Benzene EPA 8260B 05 ug/L N_D 4 05-May-02 ND 125 1028% 12 5 10_5 8% 102 3% 0 8% <br /> _ �-12 5_ 109 4/° 102 4_/o W�µi_7/o <br /> Toluene - - µ w EPA 82608 -� 0 5 uglL - ND� 05-May-02 ND - 12 5 103 0% ° ° <br /> Ethylbenzene m�EPA 8260B 4- -��0 5- ug1L ND 05-May 02 --ND M-- 12 5 103 1% 12 5 107 0% 100 6% 1 5% <br /> m,p-Xylene EPA 8260E _A 05µ ug/L ND 05-May-02 ND 25 1023% _ 25 1068% 1001% 16% <br /> EPA8260B 05 uglL— ND 05-May-02 ND 125 1034% 12 5_107 3% 1018% 13% t <br /> 1,2-Dichoroethane(DCA) EPA 8260B-� 05 ug1L NO 05-May-,02 ND 125 1015% - 125 1010% 1019% 0_2% , <br /> Methyl t-Bury!Ether(MtBE) µ - EPA 826_08 05 _ _ uglL 1228 _05-May-02 M ND- 125 987% 12 5 _ 981% 970% -0 3% <br /> Dusopropyl eth_er_(DIP_E) ��- EP_A 8_2608. _ 0 5 _ -�-uglL � ^30 60w 05-May-02- ND -- 34 103 6% 34 102 2i. 99 6%M 4 6% <br /> Ethyl-t-butyl ether(ETRE) - EPA 8260B _ 05 Y - uglL NDLL 05-May-02 ND _ �30 103 7% 30 994% 996% 00% <br /> - <br /> Tert-amA methyl ether(TAME) EPA 82608 0 5 uglL ND 05-May-02 ND 30 1033% 30 98 B% 976% 0 3% a <br /> t-Butanol(TBA) EPA 8260B 50 uglL ND t 05-May-02 ND 150 1011% 150 959% 945% 04% <br /> I Ethylene Dibromide(EDB) EPA 8260E 05 uglL 227 1 05-May-02 ND 125 1010% 125 1018% 101_4% 0 1% <br /> TPH-Gas EPA 8015M/LUFT 50 uglL 69 05-May-02 ND 500 960% ..500 960% -976% 04% t <br /> TP- H-Diesel EPA 8015WLUFT 100 ug/L m -ND w �05-May-02 ND 5400 1020% 5040 960% 93 R. 0 8% <br /> mg1L=milligrams per Liter=ppm RSD-represent i elattve percent drerent(RPD)between duplicates spike of samples <br /> ug/L=mici ograms per Liter=ppb or Duplicate of Sarnple <br /> E FUL S B TED, C=Composite G Grab <br /> MSWD measure of the percent recovery efficiencies within the matt a <br /> = <br /> LCS-measiir e of the percent recovery of the Laboratory Control Spike(LCS) <br /> - DLR-Detection Lrmit foi the Purpose of Reporting Exceptional sample <br /> matrices of interfereneces may result in higher detection 1truNs <br /> J athan Hao V Le, Laboratory Director <br /> I <br /> 1 <br /> EPA-Errouoruneutal!'rolectror Agtniy5�1%1906 Clevelan�Aani jtigXdfgto�i�°��°�i°i�dv`�����e"a�'egstl'��r091 462-0892 Fax (209) 462-7935 g, , rrfi <br />