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I <br /> Inc. <br /> Superior recision Analtt <br /> A member of ESSCON Environmental Support Service Consortium <br /> PURGA13LE AROMATIC HYDROCARBONS <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 92808 <br /> i <br /> Method Spike , <br /> Compound Blank RL Recovery Limits RPD <br /> (mg/Kg) (mg/Kg) M (�) <br /> Benzene: ND< . 005 . 005 81/85 59-153 5's <br /> Toluene: ND< .005 . 005 105/i10 59-153 51; <br /> Ethyl Benzene : ND< . 005 . 005 85/86 59-153 1% ; <br /> Total Xylenes : ND< . 005 . 005 90/9i 59-153 1% <br /> Definitions : <br /> ND = Not Detected / <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> mg/Kg = Parts per million (ppm) Senior Chemist <br /> QC File No. 92808 Account Manager <br /> Zag ed L3tborti[or4s <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 /> 1510) 229-1512 /fax (510) 229-1526 (4 1 5) 647-2081 /fax (4 15) 821-7123 ;206) 763-2992 /fax (206) 763-8429 <br />