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j ; 2905 Railroad Ave. Ceres,CA 95307 (209)581-9280 Fax(209)581-9282 aboratories <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 ,1911039 <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 J902158-EPA 5030B <br /> Blank(J902158-BLKI) Prepared&Analyzed:11/23/09 <br /> Surrogate:a,a,a-Trifluorotoluene 52.4 ug/L 50 105 70-130 <br /> Benzene ND 0.5 " <br /> Toluene ND 0.5 " <br /> Xylenes(total) ND 1.0 " <br /> Ethylbenzene ND 0.5 " <br /> LCS(J902158-BSI) Prepared&Analyzed:11/23/09 <br /> Benzene 24.0 ug/L 25 96 80-120 <br /> LCS Dup(J902158-BSD1) Prepared&Analyzed:11/23/09 <br /> Benzene 26.8 ug/L 25 107 80-120 11 20 <br /> Approved By <br /> Argon Laboratories,Inc. California D.O.H.S.Cert.#2359 <br /> Page 5 of 7 <br />