For wastes comprised of solids, and aqueous wastes containing greater than one
percent solid material, the aqueous phase should be separated from the solid phase and
stored, according to Sec. 6.2, for possible later analysis. If necessary, the particle size of the
solids in the waste is reduced. The solid phase is extracted with a volume of fluid equal to 20
times the sample's weight. The extraction fluid employed is a function of the alkalinity of the
solid phase of the waste. A special extractor is used when volatiles are being extracted.
Following extraction, the extract is filtered through a 0.6 - 0.8 μm glass fiber filter