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PRECISION <br /> ' ENYIRO-TECH <br /> E <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Tuesday,May 31,2005 <br /> Attention: Doug Heard <br /> Kleinfelder, Inc. Repurl Page 12 of 14 <br /> 2825 Myrtle St. <br /> �{ Stockton, CA 95205 <br /> Organochlorine Pesticides by EPA Method 8081A-Quality Control <br /> Precision Enviro-Tech <br /> i <br />! Reporting Spike Source %RFC RPD <br /> s Analyte Result Limit Units Level Result %REC Limits RPD Limit Noes <br /> Batch AE53114-Solvent Extractions <br /> i' Matrix Spike(AE53114-MSI) Source:5051807-01 Prepared- 18-May-05 Analyzed:31-May-05 <br /> Aldrin 1.00 1.70 ug/kg 1.33 ND 75 10-200 <br /> gamma-BFIC(Lindane) 1.LO 1,70 1.33 ND 83 0-200 <br /> Dieldrin LID 3.30 1,33 ND 83 0-200 <br /> i Endria 1.06 1.70 1.33 ND 80 0-200 <br /> Heptachlor t.20 L70 1.33 ND 90 0-200 <br /> Surrogafe:Demehlamhiphenyl(DCB) 3.10 3.33 93 23-157 <br /> L Matrix Spike Dup(AES3114-MSD/) Snurce:5051807-01 Prepared: 18-May-05 Analyzed'.31-May-05 <br /> Aldrin 0.950 1.70 ug/kg 1.33 ND 71 0-200 5 2DO - <br /> g.aiuna-BHC(Lindaae) - L00 1.70 1.33 ND 75 0-200 10 2DO <br /> Dieldrin 1.10 3.30 1.33 ND 83 0-200 0 200 - <br /> i Endrin L00 1.70 1.33 ND '15 0-200 5 200 <br /> i, Heptachlor - 1.20 1.70 1.33 ND 90 0-200 0 200 <br /> Surrogate:Decachlorobiphenyl(DCB) 3.10 3.33 93 23-157 <br /> i <br /> i <br /> mglL- 01figmnu I—Lire,-ppm DLR-Dol aiun Limi!f n,Pi,rlx+sr fRej o,1iog, - <br /> E ug/L-micrugrmxx per L for-ppii E.-piiannf,anryle muuiees or inlerfamncex may <br /> mull in higher defeurfun finmx. <br /> i RESi'ECTFULLY sumrCED, <br /> s <br /> Jonathan Le,Laboratory Director <br /> 743 V /Fest Lane. Suite 132 Stockton (.;6. .95210 nhoaei - (209) 477-8.105 .Fax: (209) 477-8.148 <br />