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woos laboratories <br /> Ground Zero Analysis,Inc. Project Number: 815 <br /> 1714 Main Street Project Name: Lionudakis Work Order No.: <br /> Escalon,CA 95320 Project Manager: Eric Price K002027 <br /> BTEX EPA Method 8021B-Quality Control <br /> Argon Laboratories <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch K000219-EPA 5030B <br /> Blank(K000219-BLKI) Prepared&Analyzed:02/18/10 <br /> Surrogate:a,a,a-Triuorotoluene 0.0485 mg/kg 0.050 97 70-130 <br /> Benzene ND 0.005 " <br /> Toluene ND 0.005 " <br /> Xylenes(total) ND 0.010 " <br /> Ethylbenzene ND 0.005 " <br /> LCS(K000219-BS1) Prepared&Analyzed:02/18/10 <br /> Toluene 0.028 mg/kg 0.025 112 80-120 <br /> LCS Dup(K000219-BSDI) Prepared&Analyzed:02/18/10 <br /> Toluene 0.028 mg/kg 0.025 111 80-120 0.4 20 <br /> Matrix Spike(K000219-MS1) Source:K002026-05 Prepared&Analyzed:02/18/10 <br /> Benzene 0.028 mg/kg 0.025 ND 112 70-130 <br /> Matrix Spike Dup(K000219-MSD1) Source:K002026-05 Prepared&Analyzed:02/18/10 <br /> Benzene 0.030 mg/kg 0.025 ND 120 70-130 7 20 <br /> App ved By <br /> Argo i Laboratories,Inc. California D.O.H.S.Cert.#2359 <br /> 2905 Railroad Avenue, Ceres, CA 95307 ® Phone (209) 581-9280 ® Fax (209) 581-9282 <br /> email: main@orgonlabs.com Page 10 of 22 <br />