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�Qr coga©N <br />Analytical laboratory <br />Attention: Robert . E. Marty <br />Advanced GeoEnvironmental, Inc. <br />837 Shaw Road <br />Stockton, CA 95215 <br />,s <br />CERTIFICATE OF ANALYSIS <br />Thursda), October 17, 2013 <br />Metals by EPA 6000/7000 Series Methods - Quality Control <br />Precision Enviro-Tech <br />Repori Page 17 of 20 <br />Reporting Spike Source %REC RPD <br />Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />Batch A331715 - EPA 30506 Units <br />Blank (A331715-BLKI) Prepared & Analyzed: 17 -Oct -13 <br />Lead ND 0.0100 mg/kg wet <br />LCS (AJ31715-BSI) Prepared & Analyzed: l7 -Oct -13 <br />Lead 0.0903 0.0100 mg/kg wet 0.100 90 75-125 <br />Matrix Spike (AJ31715-MSI) Source: 3101110-01 Prepared & Analyzed: 17 -Oct -13 <br />Lead 69.6 0.0500 mg/kg wet 50.0 10.5 118 75-125 <br />Matrix Spike Dup (AJ31715-MSD1) Source: 3101110-01 Prepared & Analyzed: 17 -Oct -13 <br />Lead 67.6 0.0500 mg/kgwet 50.0 10.5 114 75-125 3 20 <br />mg L = millig wms per L+Yer = pp,- DLR = Detection Lim ii for P pace of Reporting. <br />mg = mimngrams per Liter = ppb 1�ceptional sample matrices or inietferences may <br />r dt in higher detectim, limits. <br />RESPECTFULLY SUBMITTED, <br />Jonathan Le, Laboratory Director <br />;(); s .v r'„it,r„t;li, Al”, Stn,c•ki n1 CA. 9520 1 vhone: (209) 477-8105 Fax: (209) 546-7497 <br />