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U <br /> o Superior precision Ana/ytica/, //7c- <br /> 1555 <br /> rnc_1555 Burke, Unit I ■ San Francisca, California 94124 ■ (4 1 5) 647-2081 / fax (415) 821-7123 <br /> Total Petroleum Hydrocarbons by Modified Method 8015 <br /> Quality Assurance and Control Data - Soil <br /> I <br /> Laboratory Number 57507 <br /> 1 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD } <br /> (m4/kg) (mg/kg) { } M (�) <br /> Diesel: ND<10 10 126/129 48-162 2% <br /> Motor oil: ND<10 10 <br /> i <br /> I <br /> J <br /> r <br /> Definitions: <br /> ND = Not Detected <br /> RPD = Relative Percent Difference r <br /> RL = Reporting Limit �l ��v^yr~,f �i <br /> mg/kg = Parts per million (ppm) Senior Chemist <br /> QC File No. 57507 ; Account Manager <br /> Page 3 of 3 <br /> i <br /> Certified Laboratories <br />