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Submission M 2004-03-0407 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> c � <br /> URS-Sacramento, CA STL San Francisco <br /> Attn.:Vernonlea Quarry <br /> on Elarth <br /> Pleasanton,CAA 94566 <br /> 2870 Gateway Oaks Dr., Ste 300 <br /> Sacramento, CA 95833 Tel:(925)484-1919 <br /> Phone: (916)679-2000 Fax: (916)679-2900 Fax:(925)484-1096 <br /> www.stl-inc_com <br /> Project: Consultant Project No: 38466082.00327 Received:03/12/2004 09:30 www.chromalab.00m <br /> BP Facility No: 548 p <br /> Site: 1612 W. Hammer Lane, Stoc& H5 ELAP#2496 <br /> -' rc . "spx&o �-rte:�sA, <br /> x ;�at <br /> r <br /> 's "�;" " 1"� yn° „i 'q-o 3"A"Ew(yr�s ''` +' yi'r ..... <br /> r'ti xx � c t"�sr y 1 kxw 'r f r.:. <br /> 50306 ` � tTests) .82606 <br /> wt cit• ` ",�;,, .. �, n -a rd i," y <br /> 37r rye '' N r. TM �f,"A, f F 1 r s k r F { r x�'maC <br /> 4 -S E .E' a .` L `C •'4 ') i'r s v'! 'F <br /> : 1 n t ✓h 'tom 4 S r r -yprzklE ``ws� s <br /> aLa—boratary�gritro�5pike�' r rx�� aw sr x " e4r` �" QC Ba c�ti#2�441Q fi2'2C 65 <br /> SSx� 4.r.ei r,� .Vx <br /> LCS 2004/031 , E 6'038 t Extracted Q3l,12�2t)�I?4 ed;03 2f20 4,4 f748 <br /> LCSD `2OQ4/03112 2C�_6 -01.2,;` � 7ctraited,U3/t12U04� nadU3I1212004'18.12 <br /> . . _.x�. ,a, ... . _ ,.._.._.. <br /> Compound Cone. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS I LCSD % Rec. RPD LCS LCSD <br /> Methyl tent-butyl ether(MTBE) 21.2 21.5 25 84.8 86.0 1.4 65-165 20 <br /> Benzene 24.7 24.6 25 98.8 98.4 0.4 69-129 20 <br /> Toluene 24.1 23.5 25 96.4 94.0 2.5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 420 428 500 84.0 85.6 76-114 <br /> Toluene-d8 1455 1450 500 91.0 90.0 1 88-110 <br /> • <br /> 03/17/2004 19:10 STL San Francisco is cart of Sevem Trent Laboratories.Inc. Page 6 of 7 <br />