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pNacee <br /> REPORT OF LABORATORY ANALYSIS <br /> THE ASSURANCE or nUArITY <br /> 1l. <br /> Mr James Jacobs QUALITY CONTROL DATA June 16, 1992 <br /> Page 21 PACE Project Number 420605525 <br /> Client Reference Exxon 7-3330 (C&M) <br /> CAM METALS IN SOIL MATRIX, ICP SCAN <br /> Batch 70 13196 <br /> Samples 70 0159040 <br /> METHOD BLANK <br /> Method <br /> Parameter Units MDL Blank <br /> Antimony (EPA Method 6010/200 7, ICP) mg/kg wet 10 ND <br /> Barium (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> Beryllium (EPA Method 6010/200 7, ICP) mg/kg wet I ND <br /> Cadmium (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> Chromium (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> Cobalt (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> Copper (EPA Method 6010/200 7, ICP) mg/kg wet I ND <br /> Lead (EPA Method 6010/200 7, ICP) mg/kg wet 10 ND <br /> Molybdenum (EPA Method 6010/200.7, ICP) mg/kg wet 2 ND <br /> 1 (EPA Method 6010/200 7, ICP) mg/kg wet 2 ND <br /> r (EPA Method 6010/200 7, ICP) mg/kg wet I ND <br />�h#alium (EPA Method 6010/200 7, ICP) mg/kg wet 20 ND <br /> Vanadium (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> Zinc (EPA Method 6010/200 7, ICP) mg/kg wet 1 ND <br /> LABORATORY CONTROL SAMPLE AND CONTROL SAMPLE DUPLICATE <br /> Reference Dupl <br /> Parameter Units MDL Value Recv Recv RPD <br /> Antimony (EPA Method 6010/200 7, ICP) mg/kg wet 10 100 97% 89% 8% <br /> Beryllium (EPA Method 6010/200 7, ICP) mg/kg wet 1 100 96% 96% 0% <br /> Cadmium (EPA Method 6010/200 7, ICP) mg/kg wet 1 100 93% 93% 0% <br /> Chromium (EPA Method 6010/200 7, ICP) mg/kg wet 1 100 91% 92% 1% <br /> Cobalt (EPA Method 6010/200 7, ICP) mg/kg wet 1 100 95% 99% 4% <br /> Copper (EPA Method 6010/200 7, ICP) mg/kg wet 1 100 91% 90% 1% <br /> Lead (EPA Method 6010/200 7, ICP) mg/kg wet 10 100 99% 92% 7% <br /> Molybdenum (EPA Method 6010/200 7, ICP) mg/kg wet 2 100 96% 95% 1% <br /> Nickel (EPA Method 6010/200 7, ICP) mg/kg wet 2 100 92% 98% 6% <br /> Silver (EPA Method 6010/200 7, ICP) mg/kg wet 1 10 93% 85% 8% <br /> Thallium (EPA Method 6010/200 7, ICP) mg/kg wet 20 100 86% 91% 5% <br /> MDL Method Detection Limit <br /> Not detected at or above the MDL <br /> Relative Percent Difference <br /> 11 Digital Drive offices Serving Minneapolis Minnesota Charlotte North Carolina An Equal opportunity Employer <br /> Novato CA 94949 Tampa Florida Asheville North Carolina <br /> TEL 415 883 6too Iowa City Iowa New York New York <br /> FAX 415 883 2673 Sari Francisco California Pittsburgh Pennsylvania <br /> Kansas City %ssourl Denver Colorado <br /> Los Angeles California <br />