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12 <br /> ' Geocon Consultants,Inc. Project Number: Former Wards and Unocal,S9482-06-02 <br /> Suite 800 <br /> 3160 Gold valley Drive, Report To: Josh Ewert <br /> Rancho Cordova,CA 95742 Reported: 01/23/2012 <br /> ' QUALITY CONTROL SECTION <br /> ' Total Metals by ICP-AES EPA 6010B-Quality Control <br /> Result PQL Spike Source %Rec RPD <br /> ' Analyte (mg/kg) (mg/kg) Level Result %Rec Limits RPD Limit Notes <br /> Batch B2A0528-EPA 3050B <br /> ' Blank(B2A052&BLKl) Prepared:1/20/2012 Analyzed: 1/20/2012 <br /> Cadmium ND 1.0 NR <br /> Chromium ND 1.0 NR <br /> Lead ND 1.0 NR <br /> ' Nickel ND1.0 NR <br /> Zinc ND 1.0 NR <br /> LCS(B2A0528-BS1) Prepared:1/20/2012 Analyzed: 1202012 <br /> ' Cadmium 45 1.0 50.0 90.2 80-120 <br /> Chromium 45 1.0 50.0 90.3 80-120 <br /> Lead 46 1.0 50.0 92.4 80-120 <br /> ' Nickel 45 1.0 50.0 89.7 80-120 <br /> Zinc 45 1.0 50.0 90.1 80-120 <br /> Matrix Spike(B2A0528-MS1) Source:1200201-01 Prepared: 120/2012 Analyzed: 1/202012 <br /> ' Cadmium 77 1.0 125 0.10 61.4 58-102 <br /> Chromium 110 1.0 125 25 64.9 55-105 <br /> Lead 84 1.0 125 5.3 63.1 46-116 <br /> Nickel 100 1.0 125 27 60.6 52-109 <br /> Zinc 120 1.0 125 80 35.2 37-123 Ml <br /> Matrix Spike Dup(B2A052&MSDI) Source:1200201-01 Prepared: 120/2012 Analyzed:1/20/2012 <br /> Cadmium 94 1.0 125 0.10 74.9 58-102 19.7 20 <br /> ' Chromium 130 1.0 125 25 83.6 55-105 19.8 20 <br /> Lead 100 1.0 125 5.3 77.6 46-116 19.5 20 <br /> Nickel 120 1.0 125 27 75.0 52-109 16.1 20 <br /> Zinc 150 1.0 125 80 53.2 37-123 16.6 20 <br /> 1 <br /> ' 3275 Walnut Avenue,Signal Hill, CA 90755•Tel.562-989-4045 0 Fax.,562-989-4040 a www.atlglobal.com Page 4 of 11 <br />