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OD!3ElyVZPLaboratory CERTIFICATE OFANALYSIS <br /> Monday;December 12,2011 <br /> flttention: Jay Visconti <br /> Northwood Properties Report Page 11 of13 <br /> 324 Manhatton Beach Blvd <br /> Manhatton Beach, CA 966634 <br /> Metals by EPA 6000/7000 Series Methods-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AL11201-EPA 3050B Units <br /> Calibration Check(AL11201-CCV1) Prepared&Analyzed: 12-Dec-11 <br /> Thallium 0.199 mg/kg wet 0.200 100 0-200 <br /> Zinc 0.211 0.200 105 0-200 <br /> Matrix Spike(AL11201-MS1) Source:1120702-01 Prepared&Analyzed: 12-Dec-11 <br /> Antimony 8.66 0.0100 mg/kg dry 10.1 ND 86 75-125 <br /> Vanadium 15.3 0.0100 5.06 10.9 86 75-125 <br /> Arsenic 5.29 0.0100 5.06 0.737 90 75-125 <br /> Barium 152 0.0500 5.06 146 114 75-125 <br /> Beryllium 4.89 0.0100 5.06 0.451 88 75-125 <br /> Cadmium 5.14 0.0100 5.06 0.790 86 75-125 <br /> Chromium 14.4 0.0100 5.06 9.92 88 75-125 <br /> Cobalt 6.01 0.0100 5.06 1.46 90 75-125 <br /> Copper 18.6 0.0100 5.06 14.3 85 75-125 <br /> Lead 14.7 0.0100 5.06 8.88 114 75-125 <br /> Mercury 6.35 0.100 5.06 0.553 114 75-125 <br /> Molybdenum 8.17 0.0100 10.1 0.0570 80 75-125 <br /> Nickel 15.3 0.0100 5.06 10.8 88 75-125 <br /> Selenium 3.91 0.0100 5.06 0.0924 75 75-125 <br /> Silver 5.13 0.0100 5.06 ND 101 75-125 <br /> Thallium 5.20 0.0100 5.06 ND 103 75-125 <br /> Zinc 18.1 0.100 5.06 13.4 93 75-125 <br /> Matrix Spike Dup(AL11201-MSD1) Source:1120702-01 Prepared&Analyzed: 12-Dec-1 I <br /> Vanadium 15.2 0.0100 mg/kg dry 5.06 10.9 85 75-125 0.3 20 <br /> Antimony 9.03 0.0100 10.1 ND 89 75-125 4 20 <br /> Arsenic 5.29 0.0100 5.06 0.737 90 75-125 0 20 <br /> Barium 152 0.0500 5.06 146 119 75-125 0.2 20 <br /> Beryllium 4.96 0.0100 5.06 0.451 89 75-125 1 20 <br /> Cadmium 5.15 0.0100 5.06 0.790 86 75-125 0.2 20 <br /> Chromium 14.5 0.0100 5.06 9.92 90 75-125 0.7 20 <br /> Cobalt 5.50 0.0100 5.06 1.46 80 75-125 9 20 <br /> Copper 18.5 0.0100 5.06 14.3 83 75-125 0.5 20 <br /> Lead 14.7 0.0100 5.06 8.88 114 75-125 0.1 20 <br /> Mercury 6.26 0.100 5.06 0.553 113 75-125 1 20 <br /> mg L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting. <br /> no,=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFULLY SUBMITTED, <br /> Jonathan Le,Laboratory Director <br /> 3935 N. Coronado Ave Stockton CA. 95204 phone: (209) 4 7-8105 Fax: (209) 546-7497 <br />