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Superior P)Ocision Ana/yticajAIrnc. <br /> ` 1555 Burke. Unit I • San Francisco, California 94124 • (4 15) 647-2081 /fax f415) 82 1-7 123 <br /> Total Petroleum Hydrocarbons by EPA Method 8015M <br /> Quality Assurance and Control Data - Water <br /> Laboratory Number 57991 <br /> Method spike <br /> Compound Blank RL Recovery Limits RPD <br /> (ug/L) (ug/L) (%) (%) (%) <br /> Kerosene: ND<500 500 <br /> Diesel: ND<50 50 87/92 50-150 6% <br /> Motor Oil: ND<500 500 <br /> Definitions: <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> ug/L = Parts per billion (ppb) senior Chemist <br /> QC File No. 57991 Account Manager <br /> Page 3 of 3 <br /> Certified Laboratories <br />