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I4VOra{or;� 2905 Railroad Ave. Ceres,CA 95307 (209)581-9280 Fax(209)581-9282 <br /> RMC Geoscience Project Number: 4th Qtr.2010 <br /> 405 E.D St..Ste 109 Project Name: Shadow Lake Park Work Order No.: <br /> Petaluma-CA 94952 Project Manager.Rick Mitchell KO 12042 <br /> ANALYSIS REPORT-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 K001929-General Prep <br /> Matrix Spike(KO01929-MS1) __ Source_K012037-01 Prepared&Analyzed: 12/16/10 <br /> Nitrate 9.60 mg/L 10 ND 96 70-130 <br /> _Matrix Spike Dnp(K001929-MSDI) _ — Source:K012037-01 Prepared&Analyzed:12/16/10 <br /> Nitrate 9$0 mg/L 10 ND 9g 70.130 2 20 <br /> BatchK001930-General Prep <br /> LCS(KO01930-BSI) Prepared&Analyzed: l2/16/10 <br /> pH 7.03 pH Units 7.0 —--100 95-105 <br /> Approved By <br /> Argon Laboratories,Inc. California D.O.H.S.Cert.#2359 <br /> Page 5 of 7 <br />