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Superior Precisian Analytical. /roc_ <br /> A member of ESSCON Environmental Support Service Consortium <br /> TOTAL PETROLEUM HYDROCARBONS AS DIESEL <br /> Quality Assurance and Control Data _ water <br /> Laboratory Number 92919 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (ug/L) (ug/L) (a) (o) (o) <br /> Diesel ND<50 50 104/104 50--145 00-, <br /> Definitions _ <br /> ND = Not Detected <br /> RPD`= Relative Percent Difference O <br /> RL Reporting Limit , �L <br /> ll <br /> ug/L = Parts per billion (ppb) t- Senior Chemist/ <br /> QC File No. 92919 Account Manager <br /> 0 <br /> Page 3 of 3 <br /> Certified Laboratories <br /> 825 Arnold Dr Suite 1 14 1555 Burke St Unit l 309S Cloverdale St Su+te B-24 <br /> Martinez California 94553 San Francisco California 94124 Seattle Washington 98108 <br /> 15 10) 229-1512 /fax 15 10) 229-1526 f4 15) 647-2081 /fax (415) 821-7 123 (206) 763 2992 / fax (206) 763-8429 <br />