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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Tuesday,May 31, 2005 <br /> Attention: Doug Heard <br /> Kleinfelder,Inc. Report Page If of 14 <br /> 2825 Myrtle St. <br /> Stockton, CA 95205 <br /> Organochlorine Pesticides by EPA Method 8081A-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Linut Units Level Result %REC limits RPD Limit Notes <br /> Batch AE53114-Solvent Extractions <br /> Blank(AE53114-BLKI) Prepared: 18-May-05 Analyzed:31-May-05 <br /> 3 Aldrin ND 1.70 ug/kg <br /> k alpha-BHC ND 3.30 " <br /> !� beta-BHC ND 330 " <br /> L deka-MC ND 3.30 <br /> FFFF gamma-DHC(Lind ane) ND 1.70 <br /> Chlordane(tech) ND 33.0 11 <br /> 4,4'-.DDD ND 3.30 <br /> 4,4'-DQE ND 3.30 <br /> 4,4'-DDT ND 3.30 " <br /> Dieldrin ND 3.30 <br /> EndosulfarI ND 1.70 <br /> r Endasulfan 11 ND 3.30 <br /> Endosulfan sulfate ND 3.30 " <br /> I Endrin ND 1.70 <br /> r Endrin aldehyde ND 6.60 <br /> i Heptachlor ND 170 " <br /> Hepinchlor epoxide ND 130 <br /> Methoxychlor ND 6.60 " <br />` + Toxaphene ND 66.0 . <br /> i !1� Surrogate:Decachlorobiphenyl(DCB) 3.00 3.33 90 23-157 <br /> I LCS(AE53114-BSI) Prepared: 18-May-05 Analyzed:31-May-05 <br /> Aldrin 1.20 ].70 uglkg 1.33 90 0-200 <br /> � gamma-BHC(lindane) 125 1.70 1.33 94 0-200 <br /> Dieldrin 1,20 3.30 1.33 90 0-200 <br /> r i Endrin - 140 1.70 L.33 105 0-2D0 <br /> k <br /> i � 1 <br /> Heptachlor 1.30 1.70 1.33 96 0-200 _ <br /> Surrogate:Decac.hlorohiphenyl(DCB) 3.00 3.33 90 23-157 <br /> r mb4--nulhgm-per Liter-pp ULR-Deleam,Limltfur Parfmse ofRepaning. <br /> ug/L=nucrugrnnrr leer fixer=plA Fscepii-d sample nmtricer❑r imcrfrrcnecs mpy ' <br /> resuh m higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> r <br /> Jonathan.Le,Laboratory Director <br /> 7"43 N. [fest Lane. Suile.B2 Stockton C'r1- 95210 nhone: (209) 477-8105 Fax: (209) 477-8148 <br />