United States
                    Environmental Protection
                    Agency
Air and Energy Engineering       •
Research Laboratory             / /
Research Triangle Park NC 27711
                    Research and Development
EPA/600/S9-85/015 June 1985
&ER&          Project  Summary
                    Proceedings:  First  Annual  Acid
                    Deposition  Emissions
                    Inventory  Symposium
                    James B. Homolya, Compiler
                     A 2-day symposium, on the progress
                    of implementing the National Acid
                    Precipitation Assessment Program
                    (NAPAP) Task Group B's emission
                    inventory programs, was intended pri-
                    marily for government, academic and
                    private sector individuals involved in
                    either the development or use of at-
                    mospheric emission inventories for acid
                    deposition and air quality research.
                    Topics included the  development of
                    emission factors for a wide range of
                    pollutant emissions  and the use of
                    detailed emission inventories for atmos-
                    pheric transport, transformation, and
                    deposition modeling.
                     The meeting: (1) provided detailed.
                    presentation  and information transfer
                    of the NAPAP emission inventory pro-
                    gram; (2) illustrated and strengthened
                    the relationship between the emission
                    inventory data base and its users; and
                    (3) compared and contrasted the
                    NAPAP emission inventory with other
                    on-going emission inventory develop-
                    ment programs.
                     This Project Summary was developed
                    by EPA's Air and Energy Engineering
                    Research Laboratory, Research Triangle
                    Park, NC. to announce key findings of
                    the research project that is fully docu-
                    mented in a separate report of the same
                    title (see Project Report ordering infor-
                    mation at back).

                    Background
                      The proceedings document presen-
                    tations during a symposium (cosponsored
                    by EPA and the Department of Energy),
                    held December 3-4,1984, in Raleigh, NC.
                    I n 1980, Congress established the Nation-
al Acid Precipitation Assessment Program
(NAPAP) to coordinate and expand re-
search relevant to the problems posed by
acid deposition in and around the U.S.
The program is organized and managed
through the Interagency Task Force on
Acid Precipitation (ITFAP) and 10 subor-
dinate task groups coordinating specific
technical areas of research. One of these
10 groups is Task Group B, Man-Made
Sources, chaired by  a representative of
the Office of Fossil Energy, Department of
Energy (DoE). The task group includes
members representing the Environmental
Protection Agency, the Tennessee Valley
Authority,  and the National Laboratory
Consortium.  Major  objectives of Task
Group B are to:

 1.  Provide an  accurate and complete
     inventory of emissions from an-
     thropogenic sources believed to be
     important in acid deposition pro-
     cesses. The inventories are to be
     provided with adequate geographic,
     temporal, and sectoral resolution.
 2.  Provide models which predict how
     acidic and acid-precursor emissions
     may be altered by factors such as
     economic  growth, fuel  supply,
     emissions regulations, and control
     techniques. These models will have
     the capability to permit the calcula-
     tion of alternative control strategies.

 The 2-day  symposium discussed the
progress in the implementation of the
Task Group B emission inventory pro-
grams. J. David Mobley of EPA's Air and
Energy Engineering Research Laboratory
was Symposium Chairman, with planning

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and coordination support from John Fink,
of EPA's Office of Air Quality Planning
and Standards, and Edward Trexler, of
DoE's Office of Fossil Energy. The sym-
posium focused on the National Acid
Precipitation Program Task Group  B's
development of a comprehensive emis-
sions inventory for use in acid deposition
research. The meeting was  intended
primarily for government, academic, and
private sector individuals involved in
either the development or use of atmos-
pheric emission  inventories for acid de-
position and air quality research. Topics
included the development of emission
factors for a  wide range of pollutant
emissions and the use of detailed emis-
sion inventories for atmospheric trans-
port, transformation, and deposition
modeling. The following  presentations
were made on NAPAP emission inventory
activities, application of emission inven-
tories for scientific purposes, and related
emission inventory development projects.
Session 1: NAPAP Emission
Inventory Activities

Michael A. Maxwell, EPA/AEERL
Session Chairman

• Current Task Group B Emission Inven-
   tory Activities, J.D.  Mobley, EPA/
   AEERL
• Overview of 1980 NAPAP Emission
   Inventory, D. A. Toothman, Engineer-
   ing-Science
• Utility Point Source Emission Inven-
   tory, E. H. Pechan, E. H. Pechan and
   Associates
• Development of Temporal, Spatial, and
   Volatile Organic Compound Allocation
   Factors for the NAPAP Emission In-
   ventory, F. M. Sellers, GCA Corporation
• Stationary  Source Emission Factor
   Development, J. B. Homolya, Radian
   Corporation


Session 2: NAPAP Emission
Inventory Activities (continued)

John C. Bosch, EPA/OAQPS
Session Chairman

• User's Guidelines for Access of the
   1980 NAPAP Emissions Inventory, C.
   0. Mann, EPA/OAQPS/MDAD
• Historical Emissions Inventory Devel-
   opment,  G. Gschwandtner, Pacific
   Environmental Services
 • Development of a Monthly Historical
   Emissions Inventory, D.  Knudson,
   Argonne National Laboratory
 • Summary of Quality Assurance and
   Peer Review Program for NAPAP Task
   Group B Emission Inventory Develop-
   ment, E. C. Trexler, DoE
 • Estimation  of  Uncertainty  Within
   NAPAP Emissions Inventory, C. Ben-
   kovitz, Brookhaven National Laboratory
 • Volatile  Organic Compound Specia-
   tion, M. P. Papai and J. C. Dickerman,
   Radian Corporation
 • NAPAP Emission Inventory Develop-
   ment for FY 85-86, J.  D. Mobley,
   EPA/AEERL

Session 3: Application of
Emission Inventories for
Scientific Purposes

Edward C. Trexler, DoE
Session Chairman

 • Sulfur Deposition Modeling with the
   NAPAP Emission Inventory, T. L.Clark,
   EPA/ASRL
 • Emission Inventory  Applications to
   Regional Acid Deposition Modeling, J.
   H. Novak, EPA/ASRL
 • The Use of Emission Inventories for
   Effects Studies, A. M. Bartuskaand W.
   R. Alsop, North Carolina State Univer-
   sity

Session 4: Related Emission
Inventory Development
Activities

Edward C. Trexler, DoE
Session Chairman

 • Canadian Acid  Deposition Emission
   Inventory  Development,  F.  Vena,
   Environment Canada
 • Emission Inventory Requirements for
   EPRI Acid Deposition Model Develop-
   ment,  S. L.  Heisler, Environmental
   Research and Technology
 • Development of the  Natural Sources
   Emissions Inventory, D. L. Albritton,
   National Oceanic and Atmospheric
   Administration

Session 5: Panel Discussion

John B. Fink, EPA/OAQPS, Moderator

 • Emission Inventory Applications, J. H.
   Novak, EPA/ASRL
• Emission Factor Development, J. B|
   Homolya, Radian Corporation      "
• Historical Emission Inventories, G.
   Gschwandtner, Pacific Environmental
   Services
• Quality Assurance and Estimation of
   Uncertainties, C. Benkovitz, Brook-
   haven National Laboratory

  The meeting  was attended by  104
people, representing an excellent cross-
section of the target audience. Foreign
representatives to the meeting were from
Canada, the Netherlands, and the United
Kingdom. The meeting:

  1.  Provided detailed presentation and
     information transfer of the NAPAP
     emission inventory program,
  2.  Illustrated and strengthened the
     relationship between the emission
     inventory data base and its users,
     and
  3.  Compared  and contrasted  the
     NAPAP emission  inventory with
     other on-going emission inventory
     development programs.

  Handout material provided at the meet-
ing included a brief summary of each
presentation. Copies of  the papers are
available as the meeting  proceedings,
along with a list of registrants.

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     J. Homolya is with Radian Corporation, Morrisville, NC 27560.
     J. David Mobley is the EPA Project Officer (see below).
     The complete  report,  entitled "Proceedings: First Annual Acid Deposition
       Emissions Inventory Symposium," (Order No. PB 85-200  004/AS;  Cost:
       $14.50, subject to change) will be available only from:
            National Technical Information Service
            5285 Port Royal Road
            Springfield, VA 22161
            Telephone: 703-487-4650
     The EPA Project Officer can be contacted at:
            Air and Energy Engineering Research Laboratory
            U.S. Environmental Protection Agency
            Research Triangle Park, NC 27711
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