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ckrG° MC9500[m <br /> C HW9 KO- 11 C AH <br /> "a/YtAca/ Laboratory CERTIFICATE OF ANALYSIS <br /> Httention: John Terayskls Monday, November 17, 2003 <br /> WGR Southwest, Inc. <br /> 315 W. Pine Street, Suite 1A <br /> Lodi, CA 95240 Report Page 3 of 5 <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 AK31705-EPA 3050B <br /> Matrix Spike(AK31705-MSI) Source:0324741-13 Prepared&Analyzed:03-Nov-03 <br /> Antimony 101 1.00 mg/kg 100 ND 101 75-125 <br /> Arsenic 101 1.00 100 ND 101 75-125 <br /> Barium 402 0.400 100 304 98 75-125 <br /> Beryllium 84.5 0.100 100 0.157 84 75-125 <br /> Cadmium 90.7 1.00 100 ND 91 75-125 <br /> Chromium 178 1.00 100 78.6 99 75-125 <br /> Cobalt 89.2 0.700 100 10.3 79 75-125 <br /> Copper 129 1.00 100 51.7 77 75-125 <br /> Lead 87.1 1.00 100 ND 87 75-125 <br /> Molybdenum 83.7 1.00 100 ND 84 75-125 <br /> Nickel 160 1.00 100 63.7 96 75-125 <br /> Selenium 101 1.00 100 ND 101 75-125 <br /> ­,Ilium 789 1.00 100 685 104 75-125 <br /> idium 207 1.00 100 106 101 75-125 <br /> /-me 202 1.00 100 98.2 104 75-125 <br /> Matrix Spike Dup(AK31705-MSD1) Source:0324741-13 Prepared&Analyzed:03-Nov-03 <br /> Antimony 102 1.00 mg/kg 100 ND 102 75-125 1 20 <br /> Arsenic 90.0 1.00 100 ND 90 75-125 12 20 <br /> Barium 400 0.400 100 304 96 75-125 0.5 20 <br /> Beryllium 95.0 0.100 100 0.157 95 75-125 12 20 <br /> Cadmium 103 1.00 100 ND 103 75-125 13 20 <br /> Chromium 171 1.00 100 78.6 92 75-125 4 20 <br /> Cobalt 98.0 0.700 100 10.3 88 75-125 9 20 <br /> Copper 148 1.00 100 51.7 96 75-125 14 20 <br /> Lead 102 1.00 100 ND 102 75-125 16 20 <br /> Molybdenum 97.0 1.00 100 ND 97 75-125 15 20 <br /> Nickel 170 1.00 100 63.7 106 75-125 6 20 <br /> Selenium 98.0 1.00 100 ND 98 75-125 3 20 <br /> Thallium 788 1.00 100 685 103 75-125 0.1 20 <br /> Vanadium 208 1.00 100 106 102 75-125 0.5 20 <br /> Zinc 203 1.00 100 98.2 105 75-125 0.5 20 <br /> mg/L=milligrams per Liter=ppm DLR=Detection Limit for Purpose of Reporting. <br /> ug/L=micrograms per Liter=ppb Exceptional sample matrices or interferences may <br /> result in higher detection limits. <br /> RESPECTFUL Y SUBMITTED, <br /> X4L <br /> Jon than e,Laboratory Director <br /> 7743 N. West Lane. Suite 132 Stockton, CA 95210 Tel.: (209) 477-8105 Fax: (209) 477-8148 <br />