4.4.2.1   Overall Protection of Human Health and the Environment
-- Alternative 2

Alternative 2 would protect human health and the environment in
the long term primarily through treatment of the PCB-contaminated
material using dechlorination and HTTD.  PCB-contaminated
materials would be excavated and transported to the CTF, thereby
reducing the potential for direct contact with, ingestion of, or
inhalation of contaminated materials at each of the sites.  The
PCBs would be separated from contaminated material through HTTD
and dechlorinated in the rotary dryer or concentrated in a oily
waste stream and dechlorinated in a separate chemical reactor,
thus significantly reducing the volume and toxicity of the
contaminated materials.  The residual oil stream, as well as
certain PCB articles such as capacitors would be incinerated off
site.  Waste material not contaminated with PCBs would be
properly disposed of in a permitted off-site facility.  The
short-term protection of human health and the environment during
waste treatment is a primary consideration.  Human health and the
environment would be protected in the short term by implementing
strict engineering controls on emissions from the dechlorination
and HTTD units.