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Table 8. Multi-Laboratory Semi-Volatiles, Precision<br />

Extraction<br />

Waste Compound Fluid X S %RSD<br />

Ammonia Lime BNAs #1 10043 7680 76.5<br />

Still Bottoms (A) #2 10376 6552 63.1<br />

API/EW BNAs #1 1624 675 41.6<br />

Mixture (B) #2 2074 1463 70.5<br />

Fossil Fuel BNAs #1 750 175 23.4<br />

Fly Ash (C) #2 739 342 46.3<br />

NOTE: Units = µg/L<br />

X = Mean results from 3 - 10 labs<br />

Extraction Fluid #1 = pH 4.9<br />

#2 = pH 2.9<br />

%RSD Range for Individual Compounds<br />

A, #1 0 - 113<br />

A, #2 28 - 108<br />

B, #1 20 - 156<br />

B, #2 49 - 128<br />

C, #1 36 - 143<br />

C, #2 61 - 164<br />

Mean %RSD = 54<br />

CD-ROM 1311- 31 Revision 0<br />

July 1992

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