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� � �r l�� �� l� �� � �� �■� �� �■wr �� awe � � � <br /> r_NWQ K(D-TC CH <br /> Analytical Laboratory CERTIFICATE 4FANAL YSIS <br /> Wednesday,September 04,2002 <br /> TO William Liftle <br /> Advanced GeoEnviron mental <br /> j 837 Shaw Road <br /> Stockton CA 95215 <br /> Aromatic Compound in Gasoline by GC/MS <br /> Sample Information <br /> Sample ID- 16638-04 Sample Type Grab <br /> Sample Description: VW-1 083002 Project Name COS-Fire Station#2 <br /> Date/Tune Sampled- 8/30/2002 100 00 PM Sample Matrix Ground Water <br /> xANALYTICAL RES ULT be QA/QCREPORT <br /> Date. r_ LCS Spikem <br /> {Test Parameter Method DLR Unit Result Analyzed Blank Colic. LCS% Conc. MS% MSD RSD <br /> I Benzene _ sm EPA 82609 05 ug/L r . re `ND 30-Aug 02 ND 8 1029% 8 _ 1013% 1025% 4 3% v £ <br /> i Toluene _ w EPA 8260E - 0 5 ug/L_ ND� �- 30-Aug-02 ND 8 107 5% 8_ 102 5% 145 0% 08% <br /> Ethylbenzene EPA 8260E ug/L ND -3-0--A—ug-0-2 NO 8 1029/.--- 8 102 5% 100 0% 06% <br /> ° <br /> _ _05 _ _ —i _0 % Wry <br /> m p Xylene E_PA 8260B 05 uglL _ND 30-Aug 02 NU 16 1053% 16 1063% 1031% 07% <br /> o-Xylene _ <br /> EPA 8260B 05 _uglL ND 30-Aug-02 Na 8 104_3%-_ 8ry 102 5% 106 3%_ _ 09% <br /> 1,2-Dichoroethane(DCA) EPA 8260B 05 ug1L ND 30-Aug-02 NO 8 1008% 8 1003% 1000% 0-1% <br /> Methyl t-Butyl Ether(MtBE} _ EPA 82646 --65-- _ ug1L ND 30-Aug-02 NO 8 1063%--- 8 10_2 5% ,105 0% 06% <br /> Diisopropyl ether(DIFF} EPA 8260B 0 5 �uglL ry _W ND 30-Aug-02 NO 18 1000% 18 944% 1000% 14% <br /> Ethyl-t-butyl ether(ETBE}) _ EPA 8260E 05 mm ug/L mm ND .- 30-Aug-02 NO 18 1002% 18 � 1056% 111 1% 13% <br /> Teri-amyl_methyl ether(TAME) EPA 8260B 0 5 uglLND )� 30-Aug-42 NO 18 94 3% 18 _ _9_4 4% 1000% 14% <br /> t-a'tanol(TBA) _� � -� EPA 82608 50 -�--�- uglL - ND -�30-Aug-02 NO 100 920% . 100 - 920% 980% , 16% <br /> Ethylene Dibromide(EDB) u EPA 82608 0 5 _ ug1L w ND 30 Aug-02 NO 8 96 0% W ~8 M98 8%°m 96 3% -06% <br /> TPH-Gas_µY EPA 8015A�1LUFT 50 - auglLND µ _ 30-Aug-02 NO 500 1080% 500_T4 1100% - 1040% 14% <br /> ' TPH-Diesel EPA 80151VI/LLJFT 100 _ _uglL _ _ND� I 30-Aug-02 NO 5000 960% 5000 980% 1020% 10% <br /> rng/L=mtlhgrmas per Luer=ppni RSDw represent ielanve percent different(RPD)between duplicates spike of sample <br /> ug/L=unci ogi ams per Liter=ppb of Duplicate of Sample <br /> RE CT ULL ' TED, C=Composite G=Grab MS/MSD meastu e of the peiec+u+ccovei y efficiencies within the matrix <br /> LCS-nwasuie of the per cent iecoi eia oflhe Laboi atony Control Spike(LCS) <br /> Dl R-Detection 1 anti fai the Purpou of Repoiltrig Faceptional sample <br /> J taut n Hao V Le, Labor atony Drt ectot matrices or ruk ifcrencces may result in higher deteclion limits <br /> EPA-Lnsirorrn+enteill'iotectroitAgeiic5*5,,E Cleveland'btat'S 462-0892 Fax (209) 462-7935 w Page 1 of! <br />