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Superior !Precision Analytical, /17c. <br /> A member of ESSCON Environmental Support Service Consortium <br /> EPA SW-846 METHOD 8240 - VOLATILE ORGANICS <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) (16 <br /> Tetrachloroethene ND<3 3 <br /> Chlorobenzene ND<3 3 94/94 75-130 0§ <br /> Ethylbenzene • ND<3 3 <br /> Xylenes ND<3 3 <br /> Styrene ND<3 3 <br /> 1 , 1, 2 , 2-Tetrachloroeth ND<3 3 <br /> Vinyl Acetate ND<10 10 <br /> 1, 3-Dichlorobenzene ND<3 3 <br /> 1 , 4-Dichlorobenzene ND<3 3 <br /> 1, 2-Dichlorobenzene ND<3 3 <br /> 1 , 2-Dichloroethane-d4 96 98/96 76-114 2% <br /> oluene-d8 100 101/99 88-110 20 <br /> mofluorobenzene 102 100/101 86-115 10, <br /> Definitions , <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> Parts per billion (ppb) Senior Cheml t <br /> Ile No 92919 Account Manager <br /> L5ory&d Lgb@rj!tongs <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 (510) 229-1526 f4 15) 647-2081 /-fax (4 1-5) 821-7 123 (206) 763-2992 / fax (206) 763-8429 <br />