4.3.4          Reduction of Mobility, Toxicity, or Volume Through
               Treatment -- Support Technologies

The support technologies will not reduce the toxicity and volume
of PCB-contaminated soil and rock, sludge, sediment, solid waste,
and capacitors removed from the six sites.  The mobility of
contaminants in excavated contaminated material should be reduced
because the PCB-contaminated materials exceeding cleanup levels
could either be treated at the CTF using Alternative 1, 2, 3, 4,
5, 6, or 7; or incinerated and disposed of at a TSCA incinerator
or landfill using Alternative 8.  After treatment, PCB-
contaminated materials concentrated in filter media, residuals,
and sediments may be incinerated or disposed of in an appropriate
landfill.

For the treated lagoon water, decontamination water, and process
treatment water, the toxicity and mobility of the wastewater
should be reduced before discharge to the storm or sanitary sewer
system.  The toxicity and volume of pipes contaminated with PCBs
at the Winston-Thomas Sewage Treatment Plant site  would not be
reduced.  However, the mobility of pipe contaminants could be
reduced because the pipes  could be permanently removed from the
site and disposed of in an appropriate landfill.