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Great Lakes Binational Toxics Strategy
Implementation Meeting
Stakeholders Minutes - March 23,
1998
Chicago, Illinois
Hexachlorobenzene and Benzo(a)Pyrene Meeting Minutes
Workgroup Leaders and Facilitator
Steve Rosenthal, United States Environmental Protection Agency (USEPA),
Co-Chair
Thomas Tseng, Environment Canada, Co-Chair
John Menkedick, Battelle, Facilitator
Step 1- Discussion of status of chemical; i.e. inventory, emission sources,
and
Step 2- Discussion of current and upcoming
regulatory status
The meeting was opened with each participant briefly stating
their interest in the workgroup and what they expected tocontribute or to receive from the
workgroup. S. Rosenthal distributed background Information on B(a)P and HCB, a summary of
USEPA's 112(c)(6) inventory which contains national emission estimates of polynuclear
aromatic hydrocarbons (from which B(a)P emissions were determined) and HCB emissions, and
an inventory of water discharges of B(a)P and HCB to the Great Lakes. The 112(c)(6) air
inventory indicates that the HCB emissions are essentially all from pesticide manufacture
and application, and chlorinated solvent manufacture. Steve also provided the status of
current and planned air regulations for B(a)P and HCB sources.
In the resulting discussion, there was concern expressed as
to whether the HCB air emissions estimates, which were largely based on TRI data,
reflected all of the appropriate source categories, particularly combustion. The TRI data
does show a significant downward trend in HCB air emissions. The issue/question of
Long-range transport was raised for HCB. R. Bailey stated that HCB emissions from China
were a big source of atmospheric loadings and that water discharges of HCB into receiving
waters outside of the Great Lakes could not be dismissed because the HCB would quickly
volatilize into the air.
T. Tseng distributed the status of Canadian activities for
HCB and B(a)P as well as a 1997 Environment Canada update of Pollution Prevention in the
Ontario Great Lakes Basin. The status documents contain a list of control and reduction
(including voluntary) activities as well as release estimates for these compounds.
It was preliminarily determined that the following sectors
appear significant for HCB and B(a)P:
HCB B(a)P
- pesticide manufacture -residential wood combustion
- pesticide application -open burning scrap tires
- chlorinated solvent manufacture -Iron/steel (coke ovens)
- possibly aluminum casting -primary aluminum reduction
- mobile sources
*incin./comb.(HCB&B(a)P)-this appears more appropriately
covered by other workgroups*
A. Bandemehr presented an overview of relevant information
from the Integrated Atmospheric Deposition Network (IADN). The IADN and other scientific
information indicate that HCB is globally dispersed but that deposition from B(a)P is more
localized. This means that while the national B(a)P inventory is dominated from categories
such as wildfires and prescribed burning and various types of combustion, the B(a)P that
is being deposited to the Great Lakes is probably from more localized sources such as
iron/steel mills (with coke ovens), mobile source emissions and possibly from B(a)P that
is being blown off of soil containing large concentrations of B(a)P.
Step 3 - Discussion of voluntary reduction options
No specific voluntary reduction options were presented.
Step 4 - Action items identified for
workgroup:
- Provide emission information on source categories not
accurately quantified in the emission inventory summaries that were handed out. - All
workgroup members.
- Provide information on the contribution of HCB discharges to water (outside the Great
Lakes) that is subsequently volatilized into the air (and therefore has the potential of
being transported and deposited into the Great Lakes). - Information has been provided by
R. Bailey.
- Coordinate with other groups, esp. Mercury and Dioxin/Furan, that are dealing with
combustion and incineration sources-regarding B(a)P and HCB. - EPA/EC
- Determine the best scientific information on the relative contributions of air
deposition vs. direct water discharges of HCB and B(a)P to the Great Lakes. - All
workgroup members.
- Develop a draft workgroup report on sources/emissions of HCB and B(a)P. One use of this
report is to interest companies with significant emissions (in this report) in the
Binational Toxics Strategy. - EPA/EC to prepare initial draft and workgroup members to
review.
- Coordinate with CGLI to recruit members from the chlorinated solvent manufacturing,
pesticide, iron&steel, petroleum refining and aluminum manufacturing industries as
well as appropriate representatives for vehicle emissions and wood burning stoves. - Hugh
Eisler to work with Warner Braun to obtain representatives from chemical process
manufacturing.
- Hold conference calls on an as needed basis but at least
quarterly.
Discussion of the need to identify and recruit
additional members:
Additional representation in this workgroup is needed
primarily from the pesticide industry, the chlorinated solvent manufacturing industry, the
iron and steel industry (which appears essential for B(a)P) and possibly the aluminum
manufacturing industry.
Issues identified for referral to Integration Group:
- What is the effect of Long-Range Transport
and how should the contribution of sources outside the Great Lakes be addressed.
- Will combustion sources be sufficiently addressed by other
workgroups (especially mercury and dioxin) so that HCB/B(a)P workgroup can focus on other
sources.
- What help can be provided by the integration group in
recruiting key players for HCB/B(A)P workgroup.
Additional participants:
- Robert Bailey, Consultant to CGLI
- Angela Bandemehr, USEPA
- Myron Bliss, ISK Biosciences
- Hugh Eisler, C4
- Stephane Gingras, Great Lakes United
- Jay Unwin, NCASI
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