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CERTIFICATE OF ANALYSIS <br /> Analytical Larboratvry Tuesdav, March 12, 200, <br /> TO: William Little <br /> Advanced GeoEnvironmental <br /> 837 Shaw Road <br /> Stockton CA 95215 <br /> Oxygenated Compound by GCMS <br /> Sample Information <br /> Sample ID: 14494-02A Sample Type: Grab <br /> Sample Description: Tank#1 South End Project Name: 4040 E.Main ST. <br /> Dat&Time Sampled. 3/6/2002 4:35:00 PM Sample Matrix: Soil �•. <br /> ANALYTICAL RESULT QA/QCREPORT <br /> Date LCS Spike MS Spike <br /> Test Parameter Method DLR Unit Result Analyzed Blank Conc. LCS% Conc. MS% MSD RSD <br /> Methyl t-Butyl Ether(MtBE) ERA 8260B 5 ug/kg ND 08-Mar-02 ND 12.8 112,5% 12.8 117.2%° 117.2% 0.0% <br /> Di-isopropyl ether(DIPE] EPA 82608 5 ug/kg ND OS Mar 02 ND 35 98.5% 35 82.9% 82.9% 0.0% <br /> Eth l-t-bu.:l ether ETBE :....,. _,_. EPA 82608__, :.,a. ..:. .....: U_. ND 08-Mar-02 NR`. ,..'35 :... . .98.3%.. ...3 <br /> V Y-. tY t ) 9 9 5 108.6% 108.6% 0.0% <br /> Tert-am methyl ether..,AME EPA 82608 . :, ..:. : :.: ... ....... _. : ...:.,,.._..,,, <br /> y ._ ,.... .X (TAME) <br /> ug/kg ND 08-Mar-02 N[3 35 957% 35 100.2% 103.3% 0.8% <br /> ly <br /> t-Butanol BA EPA 8260B ,.,_ .00. ND 08-Mar-02 ND, 100, 110.0% 100` 88.0% ,. ..86.0% 0 <br /> ....) g 9 6% <br /> 1,2-Dichloroethane-d4(Surrogate) %Recovery 109% <br /> 4-BFB{Surrogate) %Recovery 108% <br /> ? no L milligrams per Liter=ppm R3'D re present relative percent d; creat{RPD)between drt licafes spike n sero des <br /> or Duplicate of sample <br /> RE P ' LF'U LMTED ugil.=uricrngrrrrns per!,iter—pph <br /> C Composite G=Grab M YMO-measure ofthepercent recovery efficiencies within the matrix <br /> U S-measure of Me percent recoe eiy ofthe Laboratory Control Spike(LC,'.S) <br /> DLR-Detection I.inri!far the Purpose of Reporting. Exceptional sample <br /> rt <br /> lar ath Hao t: Le, Laboratory.Director matrices or infer ferenec:m may resrdi in higher detection floats <br /> EPA-Environmental Protec11017 Agency Method, SAI-Standard Alethod for Ereonination of!Later Ji'astewatcr 18th Ed. Page I of] <br /> 545 E, Cleveland St. Suite A Stockton, CA 95204 Tel.: (209) 462-0892 Fax: (209) 452-7935 <br />