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Superior Precision Ana/ytica/, /roc. <br /> A member of ESSCON Environmental Support Service Consortium <br /> EPA SW-846 METHOD 8270 SEMIVOLATILE ORGANICS BY GC/MS <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) M (%) (%) <br /> benzo[a]anthracene: ND<10 10 <br /> chrysene: ND<10 10 <br /> bis (2-ethylhexyl)phtha: ND<10 10 <br /> di-n-octylphthalate: ND<10 10 <br /> benzo(b,k) fluoranthene: ND<10 10 <br /> benzo[a]pyrene: ND<10 10 <br /> indeno[1, 2 , 3-cd]pyrene: ND<10 10 <br /> dibenzo[a,h]anthracene: ND<10 10 <br /> benzo[g,h, i]perylene: ND<10 10 <br /> fluorophenol: 54 21-110 <br /> enol-d5: 41 10-110 <br /> nitrobenzene-d5 : 90 35-114 <br /> 2-fluorobiphenyi: 99 43-116 <br /> 2, 4, 6-tribromophenol: 97 10-123 <br /> terphenyl-d14 : 94 33-141 <br /> i <br /> Definitions: <br /> ND = Not Detected <br /> RPD = Relative Percent Difference <br /> RL = Reporting Limit <br /> ug/L = Parts per billion (ppb) SenioCY �emist <br /> QC File No. 92919 Account Manager <br /> • Page 7 of 7 <br /> Certified Laboratories <br /> 825 Arnold Or 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 15101229-1526 (415) 647-2081 /fax (415L821-7123 12061 763-2992 / fax 120&1 763-847.9 <br />