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aSuperior Precision AnaiyticalPinc_ <br /> A member of ESSCON Environmental Support Service Consortium <br /> PURGABLE AROMATIC HYDROCARBONS <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 92808 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (mg/Kg) (mg/Kg) M) (°s) (%-) <br /> Benzene : ND< . 005 . 005 81/85 59-153 5% <br /> Toluene : ND< . 005 . 005 105/110 59-153 5t <br /> Ethyl Benzene : ND< . 005 . 005 85/86 59-153 Vk <br /> Total Xylenes : ND< . 005 . 005 90/91 59-153 1s <br /> Definitions: <br /> ND = Not Detected �� / 7/ <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit C <br /> mg/Kg = Parts per million (ppm) Senior Chemist <br /> QC File No. 92808 Account Manager <br /> Z496ed abOittoriids <br /> 825 Arnold Dr., Suite 1 14 1555 Burke St., Unit 1 309 S. Cloverdale St., Suite B-24 <br /> Martinez, California 94553 San Francisco, California 94124 Seattle, Washington 98108 <br /> (510) 229-1512 / fax (5 10) 229-1526 (415) 647-2081 / fax (41 5) 821-7123 206) 763-2992 / fax (206) 763-3429 <br />