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• • <br /> o Superior Precision Ana/ytica/, Inc. <br /> 1555 Burke Unit I - San Francisco California 94124 ■ (41 5) 647-2081 / fax 14 15) 821-7123 <br /> EPA SW-846 METHOD 8240 — VOLATILE ORGANICS <br /> Quality Assurance and Control Data - Soil <br /> Laboratory Number 15043 <br /> Method Spike <br /> Compound Blank RL Recovery Limits RPD <br /> (ug/kg) (ug/kg) M ( ) M <br /> Tetrachloroethene: ND<15 15 <br /> 1, 1, 2,2-Tetracl-ethane: ND<15 15 <br /> Toluene: ND<15 15 100/98 59-139 2% <br /> Chlorobenzene: ND<15 15 105/203 60-133 2% <br /> Ethyl Benzene: ND<15 15 <br /> Styrene: ND<15 15 <br /> Xylenes: ND<15 15 <br /> 1, 3-Dichlorobenzene: ND<15 15 <br /> 1, 4-Dichlorobenzene: ND<15 15 <br /> 1, 2-Dichlorobenzene: ND<15 15 <br /> 1, 2-Dichloroethane-d4 : 98 <br /> uene-d8: 103 <br /> mofluorobenzene: 101 <br /> Definitions: <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> = Reporting Limit �`'� <br /> kg = Parts per billion (ppb) Sedior Chem st <br /> File No. 15043 Account Manager <br /> Page 7 of 7 <br /> Certified Laboratories <br />