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PRECISION <br /> ENVIRO-TECH <br /> Analytical Labaratory CERTIFICATE OF ANALYSIS <br /> FTuesday,May 31,2005 <br /> a <br /> Attention: Doug Heard <br /> Kleinfeider,Inc. Repan Page 13 of 14 <br /> 2825 Myrtle St. <br /> -} Stockton, CA 95205 <br /> Polychlorinated Biphenyls by.EPA Method 8082-Quality Control <br /> Precision Enviro-Tech <br /> f 1 Reporting Spike Source %REC RPD <br /> i IL <br /> i Analyte Result Limit units Level Result %R-EC Limits RPD Limit Notes <br />{ Batch AE53114-Solvent Extractions <br /> Blank(AE53114-BLKI) Prepared: 19-May-05,Analyzed:31-May-05 <br />+ PCB-1016 ND 33.0 ug/kg <br /> PCB-1221 ND 33.0 <br /> PC134232 ND 33.0 " <br /> PCB-1242 ND 33.0 <br /> PCB-1248 ND 33.0 " <br /> I }� PCB-1254 ND 33.0 " <br /> PCB-1260 ND 33,0 " <br /> i <br /> k Surrogate:Decochlorohiphenyl(DCB) 3.00 3.33 90 65-135 <br /> LCS(AE53114-BSI) Prepared: 18-May-05 Analyzed:31-May-05 <br /> If Surrogate Decachlorobiphenyl(DCB) 3.00 ug/kg 3.33 96 65-135 <br /> _ a <br /> Matrix Spike(AE53114-MSI) Source:5051807-01 Prepared: 18-May-05 Analyzed:31-May-05 <br /> Surrogate:Decachlorobiphenyl(DCB) 3.20 ug/kg 3.33 96 65-135 <br /> Matrix Spike Dup(AE53114-MSDI) Source:5051807-01 Prepared: 18-May-05 Analyzed:31-May-05 <br /> Yw gwe:Decaehrorobiphenyl(DCB) 2.91 ug/kg 3.33 87 65-135 <br /> J FFF <br /> i <br /> 1Ie <br /> M1 <br />� mg/L=mrlrigrnnrs per Liler=pp m DLR=Detection Lrmitfur Yugwse of Repornng. <br /> i ug/L-micrograms per Lire,-ppb E—primal su+npk maeriees ur inlerferences nmy <br /> reside in higher delecdon rirnils, <br /> RESPECTFULLY SUBMITTED, <br /> 1 � <br /> Jonathan Le,Laboratory Director <br /> '?43 V: West Gone- Suite B2 StocktonCA. 95210 nhone: (2()9) 7;-81()5 .Fczx: (209) 47;-8148 <br />