4.4.2.5   Short-Term Effectiveness -- Alternative 2

The potential short-term effectiveness of dechlorination and HTTD
technology application involves worker safety considerations and
potential community exposures.  The technology's impact on worker
safety is similar to Alternative 1.  Potential community exposure
to health hazards from the application of a dechlorination and
HTTD system could include exposure to stack gas and fugitive dust
emissions.  These potential exposures can be minimized by
developing standards for stack gas and dust emissions at each
site.  These standards must be approved by EPA, IDEM, and local
authorities before remediation begins.  Compliance with the
standards should be demonstrated during POP testing and by
testing during remedial activities.  Potential community exposure
to stack gas and fugitive dust emissions are discussed below.

Exposure to Stack Gas Emissions

Exposure to stack gas emissions primarily depends on (1) the
concentration of contaminants in the stack gas emissions and (2)
the proximity of the treatment system to potential receptors (see
Section 4.4.1.5).  Stack gas samples typically are collected
during initial POP testing at the beginning of treatment
operations and during other testing.  Stack gas sampling results
from the WBD site are presented in Table 4-7.  Site-specific
equipment and stack testing would be required if dechlorination
and HTTD is used to treat the contaminated materials from the six
CD sites.

Exposure to Fugitive Dust Emissions

Exposure to fugitive dust emissions from the dechlorination and
HTTD system are discussed in Section 4.4.1.5.