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mcgo(� laboratories <br />2905 Railroad <br />Ave. Ceres, CA 95307 (209)581-9280 <br />Fm(209)581-9282 <br />Ground Zero Analysis, Inc. <br />Project Number. 952 <br />' <br />1172 Kansas Ave. <br />Project Name: Stockton RTD <br />Work Order No.: <br />Modesto, CA 95351 <br />Project Manager: Greg Stabil <br />P403002 <br />' <br />Total Metals -Quality Control <br />Argon Laboratories <br />Reporting Spike <br />Source <br />%REC <br />RPD <br />Analyte <br />Result <br />Limit Units Level <br />Result %REC <br />Limits <br />RPD <br />Limit Notes <br />P110213, EPA 3050B <br />'Batch <br />Matrix Spike Dup (P400213-MSDI) <br />Source: P403002-15 Prepared & Analyzed: 03/07/14 <br />Nickel <br />44.0 <br />mg/kg 50 <br />0.58 87 <br />70-130 <br />34 <br />20 <br />Spike Dup (P400213-MSD2) <br />Source: P403002-40 Prepared & Analyzed: 03/07/14 <br />'Matrix <br />Nickel <br />45.0 <br />mg/kg 50 <br />5.30 79 <br />70-130 <br />18 <br />20 <br />Zinc <br />525 <br />500 <br />5.70 104 <br />70-130 <br />11 <br />20 <br />53.5 <br />" 50 <br />0.7 106 <br />70-130 <br />12 <br />20 <br />'Lead <br />Cadmium <br />53.5 <br />50 <br />ND 107 <br />70.130 <br />10 <br />20 <br />t <br />1 <br />Approved By <br />' Argon Laboratories, Inc. California D.O.H.S. Cert #2359 <br />' <br />Page 75 of 94 <br />