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r <br /> Mmvo I O0- 1TC C H CERTIFICATE OFANALYLSII;Q <br /> 0::!5^Ar7c-v/ytAca/ Ladaratory Tuestlkj,,March 1212002 <br /> TO: William Liffle <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Aromatic Compound in Gasoline by GC/MS <br /> Sample Information <br /> Sample ID: 14494-02 Sample Type: Grab <br /> Sample Description: Tank#1 South End Project Name: 4040 E.Main ST. <br /> Date/Time Sampled: 3/6/2002 4:35:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT QA/QCREPORT <br /> Date LCS Spike MS Spike r <br /> %Test Parameter Method DLR Unit Result =Analyzed Blank Conc. LCS% Conc. MS% MSD RSD <br /> Benzene EPA 8260E 5 uglkg NO 08-Feb-02 ND 12.8 90.0% 13 97.1% 94.4% 0.7% <br /> Toluene A f EPA 8260B 5 uglkg J _ NO 08-Feb-02 ^+ND 12.8 y 90.0%° 12.8 100.6% 100.0% 0.2% <br /> Ethylbenzene EPA 8260B 5 ug/kg NO <br /> 08-Feb-02 ND 12.8 88.0% 12.8 109.4% 95.2% 3-5% <br /> m,p-Xylene EPA 8260B 5 ug/kg ND 08-Feb-02 ND 25.6 87.5% 25.6 97.2% 97.7% 0.1% <br /> o-Xylene EPA 82608 5 ug/kg NO 08-Mar-02 ND 12.8 89.5% 12.8 96.9% 98.0% 0.3% <br /> 1,2-Dichloroethaneil4(Surrogate) %Recovery 909% <br /> 4-BFB-(Surrogate] %Recovery' 108% <br /> nag/L=milligrams per lifer-pptn RSD repres•eru relative percent e/# rew(RPD)bi•ht cen duplicates spike of.samples Y <br /> or Duplicate of Sample <br /> uglL=micrograms per Liter=ppb { <br /> ,�r,TFUL B TT'ED, b1S''hf.S'D measure of the percent recovery efficiencies rvilhin tlrc:»urhi.r <br /> C.=Composite G=C;rrtb I' <br /> LC,S-nae astire of the per'c•enl recovery,of the Laboratomy Control Spike(L CS) <br /> oI! han Hao K Le, Laboratory Director L1LR Detectiar flout ftrr rlre 1'w7xrse gJ'Reportirrg. F"xcepiionnl sample <br /> matrices or intctfereneces may result in higher defection limits <br /> I <br /> l.P.I Ererirnnmarrla!Prnteetron,dxency d3eihod- Sh•f-Sfrrndrrrd Llethort for E-rruninativn of Nater IFasrerrnter 18rh lid. Pure. 1 of I <br /> 545 E. Cleveland St. Suite A Stockton, CA 95204 Tel.: (203) 462-0892 Fax: (209) 46277935 <br />