United States
                    Environmental Protection
                    Agency
 Air and Energy Engineering
 Research Laboratory
 Research Triangle Park NC 27711
                    Research and Development
 EPA/600/S9-86/031 May 1987
£EPA          Project Summary
                    Proceedings:  Sixth
                    Symposium on the  Transfer  and
                    Utilization of  Paniculate
                    Control Technology
                    Holly Rossi and Barbara Emmel
                     The proceedings of the Sixth Sympo-
                   sium on the Transfer and Utilization of
                   Participate Control Technology consist
                   of three  volumes: Vol.  1,  Plenary,
                   Scrubbers, Opacity/Measurements,
                   Advanced  Energy Applications I, Ad-
                   vanced Energy Applications II, Inte-
                   grated  Control Processes I, and Inte-
                   grated  Control Processes II;  Vol.  2.
                   Electrostatic Precipitator  Technology:
                   Hot-Size Precipitator Studies, Perfor-
                   mance  Enhancement  I, Performance
                   Enhancement II, Performance Esti-
                   mating (Modeling), Advanced Tech-
                   nology, Fundamentals I, Controls and
                   Energy Consumption, Fundamentals II,
                   and Design Considerations; and Vol. 3,
                   Fabric Filtration (FF): Advanced Con-
                   cepts I, FF: Advanced Concepts II, FF:
                   Practical Considerations, FF: Pilot Scale
                   Studies, Operation and Maintenance,
                   and Fugitive Emissions. EPA and EPRI
                   co-sponsored the symposium held in
                   New Orleans, LA, February 25-28,
                   1986.
                     This  Project Summary was devel-
                   oped by  EPA's Air and Energy
                   Engineering Research Laboratory.
                   Research  Triangle Park.  NC.   to
                   announce key findings of the research
                   project that is fully documented in three
                   volumes of the same title (see Project
                   Report ordering information at back).
                   Introduction
                     The papers in  these  three volumes
                   were presented at the symposium and
                   provided the forum for researchers,
                   manufacturers, users, government agen-
                   cies, educators, and students to discuss
 new particulate control technologies and
 to share experiences of using existing
 technologies.
  The major particulate control technol-
 ogies — electrostatic precipitators (ESPs)
 and fabric filters (FFs) — were the primary
 concern of the symposium. These tech-
 nologies  were discussed from perspec-
 tives of economics, new  technical
 advancements in science and engineer-
 ing, fundamentals, applications, and
 operation and maintenance.  Additional
 topics dealt with integrated control pro-
 cesses,  advanced energy applications,
 wet scrubbers, opacity, fugitive emissions,
 and novel concepts.
  The symposium was conducted as a
 series of parallel sessions, each con-
 taining two to six  related papers. The
 sessions  were  scheduled, however, to
 avoid any conflict that might be caused
 by simultaneous sessions dealing with
 the same topic. The papers,  therefore,
 have been divided  into three volumes.
 Each volume contains a set of related
 session topics so as to provide reasonably
 ready access to a unified technology area.
  Asterisks precede the titles of papers
 prepared  by EPA or its contractors.

 Volume 1 Papers
  Volume 1 describes various aspects of
particulate control. The keynote address
presented in the opening plenary session
addressed the rapidly advancing partic-
 ulate matter control technology. Improved
 wet scrubber  particulate control tech-
 nology, modeling of stack opacity and
 control of aerosols to meet opacity stan-
 dards, and application of technologies

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such as ceramic filters, granular beds,
high temperature electrostatic precipita-
tors and a cross-flow filter to the control
of high temperature and pressure pro-
cesses in advanced energy systems were
presented and discussed, integrated con-
trol processes covered a variety of tech-
nologies  for control of paniculate and
SOX and/or NOX such as spray dryers, the
EPA developed E-SOX process, and firing
of enhanced emulsified fuel oil.

Plenary Session
  Keynote Address: Paniculate  Matter
  Control - The Rapidly  Advancing
  Technology
    Grady B. Nichols,
    Southern Research Institute

Session C-1: Scrubbers
  Development of Improved Single Drop
  Collection  Efficiency Correlations for
  Microcomputer  Modeling of Venturi
  Scrubber Performance
    K. Ellwood, A. W. Gnyp, C. C. St.
    Pierre, University of Windsor;
    and S. Viswanathan,
    Clayton Environmental Consultants,
    Ltd.
  Fume Filtration Through  a Dynamic
  Liquid Spray Curtain
    H. H. Elliott, H. L Marschall,
    D. G. Jones, EMCOTEK, Inc.

Session  C-2:
Opacity/Measurements
  *0ptions for Controlling Condensation
  Aerosols to Meet Opacity Standards
    A. S. Damle, D. S.  Ensor,
    Research Triangle  Institute; and
    L. E. Sparks, U.S. EPA/AEERL
  'Relationship of Opacity to the Loss
  Mechanisms in ESPs
    D. S. Ensor, P. A. Lawless,
    Research Triangle  Institute; and
    L E. Sparks, U.S. EPA/AEERL
  Stack Opacity Model
    D. J. Mormile, G. C. Stegmann,
    Consolidated Edison Co. of N.Y.;
    and B. F. Piper, KVB, Inc.
  The Collection of Fine Paniculate in
  Power Plant Electrostatic Precipitators
    L T. McEvoy, K. R. Parker
    and A. Russell-Jones,
    Lodge-Cottrell, Ltd., UK
  Predicting the Panicle Size Distribution
  of Fly Ash
    R. S. Dahlin, J. P. Gooch,
    Southern Research Institute; and
    L Y. Sadler, III,
    University of Alabama
  •Quality Assurance Considerations for
  Particle Sizing Measurements
    G. L. Johnson,
    U.S. EPA/AEERL; and C. E. Tatsch,
    Research Triangle Institute

Session C-3: Advanced Energy
Applications I
  Technical and Economic Evaluation of
  High Temperature and High Pressure
  Paniculate Cleanup Systems
    R. Zaharchuk, L. N. Rubow,
    Gilbert Associates, Inc.
  Paniculate Control at High Temperature
  and  Pressure  for Emerging Electric
  Power Generation Technologies
    R. C. Bedick, R. J. Dellefield,
    U.S. DOE
  The Testing and Evaluation of Ceramic
  Filter Fabrics
    R. Chang, J. Sawyer, H. Lips,
    Acurex Corp.
    R. C. Bedick, R. J. Dellefield,
    U.S. DOE
  Hot Gas Clean-Up by Means of Porous
  Ceramic Filter Elements
    P. Eggerstedt, J. F. Zievers,
    Industrial Filter & Pump
    Manufacturing Co., Inc.

Session C-4: Advanced Energy
Applications II
  Results of  Parameteric Tests on an
  Electrostatic Precipitator Operating at
  High Temperature and High Pressure
  Conditions
    G. A. Rinard, D. E. Rugg, M. Durham,
    J. Armstrong,
    Denver Research Institute
  Design of Baghouse and Electrostatic
  Precipitator for the Coal-Fired  Flow
  Facility
    J. P. Foote,
    The University of Tennessee Space
    Institute
  Granular Bed Filter Component Design
  for High Temperature and High Pressure
    K. B. Wilson,
    Combustion Power Co.
  The Interaction of a Gas with Solid and
  Liquid Panicles in a Rotating System
    H. Heshmat, 0. Pinkus,
    Mechanical Technology, Inc.

Session C-5: Integrated Control
Processes I
  Paniculate Control Integration with Wet
  Scrubber S02  Removal and Waste
  Generation
    P. M. Maroney, S. A. Davidson,
    Brown and Caldwell Engineers;
    S. M. Katzberger,
    Sargent and Lundy Engineering; and
    J. E. Cichanowicz,
    EPRI
  "Kinetics of Reaction Between Hydratec
  Lime and Sulfur Dioxide
   A. S. Damle, K. Ramanathan,
   Research Triangle Institute; and
   D. L Harmon,
   U.S. EPA/AEERL
  *Mini-Spray Dryers for Low-Cost SO
  Control
   C. B. Sedman, L. E. Sparks,
   U.S. EPA/AEERL
  Electrostatic Precipitator Performano
  Characterization in Spray Dryer Flu
  Gas Desulfurization Systems
   G. E. Bresowar,
   Combustion Engineering, Inc.; and
   R. F. Robards, R. A. Runyan,
   TVA
  Fabric Filter Operating Experience on
  Dry FGD System at Austell Box Boat
  Corporation
   W. H. Bradley,
   Austell Box Board Corp.

Session C-6: Integrated Control
Processes II
  •Results of Pilot-Scale Tests of E-SO
    L E. Sparks, G. H. Ramsey,
    R. E. Valentine, N. Plaks,
    U. S. EPA/AEERL
  Researches for Optimal Integrated Fl
  Gas Treatment
    G. Dinelli,
    Italian National Electricity Board,
    Italy; and M. Rea,
    University of Padua, Italy
  Utility Case History on Firing Enhanc
  Emulsified Fuel  Oil to Reduce P
  ticulate and NOX Emissions
    E. S. Behrens,
    Fuel Tech, Inc.
  Particulate  Control  Devices
  Municipal Refuse-to-Energy Plants
    M. Kapner,
    New York Power Authority
  Integrated Control Device for Micrc
  and Submicronic Paniculate and Ac
  Gas Control
    T. K. Ewan, O. L Holland,
    Hydro-Sonic Systems

Volume 2 Papers
  Volume 2 describes various aspect
electostatic precipitation. Papers v\
presented that  describe design
operating considerations to improve |
formance of hot-side ESPs.  Papers <
lining improvements and experience
ESP performance using S03, NH3, ws
and  tri-ethyl-amine (TEA) conditior
high voltage pulsing, and microproce
control  are presented.  Papers are
sented that describe performance >
mating (modeling) by predicting fly
resistivity  from  ultimate  coal anal

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selection of critical parameters for ESP
design and performance evaluation, pre-
diction of ESP performance based on coal
and ash chemistry,  and a method to
calculate characteristics of contaminated
wire and strip discharge electrodes. Ad-
vanced ESP technologies including wide-
plate spacing, intermittent energization,
and a  moving electrode type ESP are
discussed. Theoretical and experimental
presentations  were  made  covering
medium-sulfur coal fly ash resistivity, the
effect of high mass loading, the effective
dielectric constant of fly ash, diagnostic
technology of ESP operation, electric field
measurements  in an  operating ESP,
finite-diffusivity effects  in single-stage
ESPs, three-dimensional calculations of
negative tuft corona, simulation of corona
discharge under practical ESP conditions,
and electrical characteristics  of back
corona. Papers are presented on mea-
surement of ESP power, management of
ESP energy, evaluation of tests and the
economic implications of power reduction
on ESPs, and application of a new micro-
processor-based distribution control
system for  ESPs. Various design con-
siderations (e.g., laboratory measurement
of electrical parameters in conventional
and wide duct ESPs, influence of gas
distribution on ESP performance, devel-
opment and testing of a collecting curtain
for  an  ESP, and characterization  of dis-
charge electrode performance)  were
discussed.

Session A-1: Hot Side
Precipitator Studies
  Hot  Precipitators and Duct Design
  Considerations
    J. A. Werhane, W. G. Doran, 0. Zaben,
    Sargent and Lundy Engineers
  Considerations for the Cyclic Operation
  of Hot-Side Electrostatic Precipitators
    F. C.  Southworth, R. K. Miller,
    Dayton Power & Light Co.; and
    C. A. Altin,
    EBASCO Services, Inc.

Session A-2: Performance
Enhancement I
  A Comparison of Electrostatic Precipi-
  tate r Performance Enhancement Tech-
  nologies
    J. Dalmon, G. L Dalton, R. S. Hansen,
    Electric Supply Commission,
    South Africa
  Baltimore Gas and Electric Experience
  with  Combined SO3/NH3 Injection for
  Precipitator Performance Improvement
    W. E. Cummings, Jr.,
    Wahlco, Inc.; and
    W. H. Reamy,
    Baltimore Gas and Electric Co.
  A Design Methodology for Optimized
  Water Conditioning of High Resistivity
  Fly Ash
    N. W. Frisch,
    N. W. Frisch Associates, Jnc.; and
    W..T. Hartshorn,
    Sonic Development Corp.
  A New Chemical Conditioner Together
  with Good Operations and Maintenance
  Program  Management  Helps Meet
  Emissions Objectives
    R. K. Sinha,
    Calgon Corp.

Session A-3: Performance
Enhancement II
  Evaluation of Broad and Narrow Pulse
  Energization of a Cold-Side Electrostatic
  Precipitator
    H. R. Osmers, D. J. Sugumele,
    Rochester Gas & Electric Corp.
  Full Scale Demonstration Results of
  Electrostatic  Precipitator Pulse Ener-
  gization
    T. W. Lugar, J. M. Friday,
    General Electric Environmental
    Services, Inc.
  Field Evaluation of Pulse Energization
  Under Different Operating Conditions
    S. Masuda and S. Hosokawa,
    University of Tokyo, Japan
  Long-Term  Experience  with  Pulsed
  Energization of ESPs at a Danish Power
  Station
    K. Porle, R. Karlsson,
    FLAKT Industri AB, Sweden; and
    B. Kirkegaard,
    Ensted Power Station, Denmark

Session A-4: Performance
Estimating (Modeling)
  *An Improved Model for Predicting Fly
  Ash Resistivity
    R. E. Bickelhaupt,
    Bickelhaupt Associates, Inc.; and
    L. E. Sparks,
    U.S. EPA/AEERL
  A Selected Review of Critical Param-
  eters  and Formulae for Design and
  Performance Evaluation of Electrostatic
  Precipitators
    H. J. Hall,
    H. J. Hall Associates, Inc.
  Predicting Cold-Side Precipitator Per-
  formance Based Upon Coal  and Ash
  Chemistry
    F. A. Horney, V. H. Belba,
    Stearns Catalytic Corp.
  'Approximate Method  to  Calculate
  Characteristics of Contaminated-Wire
  and Strip-Discharge Electrodes
    K. J. McLean,
    University of Wollongong, Australia;
    and L. E. Sparks, G. H. Ramsey,
    U.S. EPA/AEERL

Session A-S:
Advanced Technology
  Pilot-Scale  Evaluation of ESP Wide-
  Plate Spacing
    R. F. Altman, EPRI; E. C. Landham, Jr.,
    J. L DuBard,
    Southern Research Institute; and
    H. L. Wheeler,
    Combustion Engineering, Inc.
  Pilot-Scale  Evaluation of  ESP Inter-
  mittent Energization
    E. C. Landham, Jr., J. L. DuBard,
    Southern Research Institute; and
    W. E. Piulle, L. F. Rettenmaier,
    EPRI
  Operating Results of Moving Electrode
  Type  Electrostatic Precipitators for
  Coal-Fired Boilers
    H. Asano, H. Yabuto, M. Ohtsuka,
    Hitachi Plant Engineering and
    Construction Co., Ltd., Japan

Session A-6: Fundamentals I
  *Medium-Sulfur  Coal  and  Fly Ash
  Resistivity
    W. A. Harrison, J. K. Nicholson,
    Southern Company Services;
    J. L. DuBard,
    Southern Research Institute; and
    L. E. Sparks,
    U.S. EPA/AEERL
  *The Effect of High Mass Loading on
  Fly Ash Precipitators
    M. G. Faulkner, J. L DuBard,
    Southern Research Institute;
    and L. E. Sparks,
    U.S. EPA/AEERL
  •The  Effective Dielectric Constant of
  Fly Ash
    R. P. Young, J. L. DuBard,
    Southern Research Institute; and
    L. E. Sparks,
    U.S. EPA/AEERL
  Diagnostic Technology of Precipitator
  Operation
    S. Masuda, T. Itagaki, S. Hosokawa,
    University of Tokyo, Japan

Session 8-6: Controls and
Energy Consumption
  Electrostatic Precipitator  Power
  Measurements
    P. Gelfand,
    P. Gelfand Associates, Inc.;
  E. C. Landham, Jr.,
  Southern Research Institute; and
    L. F. Rettenmaier,
    EPRI

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  ESP  Energy Management and  Opti-
  mization of Collection Efficiency
    B. Borowy, M. McLauchlin,
    W. F. Frazier,
    Virginia Electric Power Co.
  The Evaluation of Tests and the Eco-
  nomic Implications of Power Reduction
  on Electrostatic Precipitators
    D. L Lueckenotte, V. L Kunzweiler,
    Burns and McDonnell
  First Utility Application of a New Micro-
  processor-Based Distributed  Control
  System for Electrostatic Precipitators
    G. R. Gawreluk, M. Barav,
    Research Cottrell, Inc.; and
    S. R. Coco,
    Lutz, Daily, and Brain
  Power Consumption of Opacity Feed-
  back Controlled Electrostatic  Precipi-
  tator Transformer-Rectifiers
    J. J. Roosma,
    General Electric Environmental
    Services,  Inc.; and
    J. B. Howard,
    Alabama  Electric Cooperative, Inc.

Session A-7: Fundamentals II
  Electric Field  Measurements in  an
  Operating Precipitator
    J. L. DuBard, E. C. Landham, Jr.,
    Southern Research Institute;
    and R. F. Altman,
    EPRI
  Finite-Diffusivity Effects in Single-Stage
  Precipitators Theory and Experiment
    S. A. Self, M. Mitchner, D. H. Choi,
    K. D. Kihm, R. Leach,
    Stanford University
  "Three-Dimensional Calculations  of
  Negative Tuft Corona
    M. K. Owen, T. Yamamoto,
    P. A. Lawless,
    Research Triangle Institute; and
    L. E. Sparks,
    U.S. EPA/AEERL
  The Simulation of  Corona  Discharges
  Under Practical Precipitator Conditions
    I. Gallimberti,
    University of Padua, Italy
  *Some  Electrical  Characteristics  of
  Back Corona
    K. J. McLean,
    University of Wollongong, Australia;
    and L. E.  Sparks, G. H. Ramsey,
    U.S. EPA/AEERL

Session B-7:
Design Considerations
  Laboratory  Measurements of Some
  Electrical Parameters in Conventional
  and Wide Duct Precipitators
    A. A. Elmoursi, G. S. P. Castle,
    The University of Western Ontario,
    Canada
  Influence  of  Gas Distribution  on
  Precipitator Performance
    L. Lind, F. L.
    Schmidth and Co.,
    Denmark
  Development and Testing of a Collecting
  Curtain for an Electrostatic Precipitator
    H. L. Engelbrecht, R. J. McMullan,
    Wheelabrator Air Pollution Control
  Characterization of Discharge Electrode
  Performance: Results of Laboratory and
  Pilot Plant Experiments
    L. A. Hawkins, H. L. Wheeler,
    Combustion Engineering, Inc.

Volume 3 Papers
  Volume 3 describes various aspects of
fabric filtration, operation and mainten-
ance (O&M),  and fugitive emission con-
trol. Advanced fabric filtration concepts
were covered in two sessions that dealt
with electrostatically stimulated  fabric
filtration (ESFF) fundamentals, modeling,
laboratory  and  field evaluations, and
economics. Practical  considerations  of
fabric filtration were covered in a session
that dealt with evaluation of acid-resistant
synthetic needled felt, laboratory studies
of the filtration performance  of various
media under  simulated field conditions,
filter bag evaluation, and aerosol deposi-
tion in fabric filters. Papers are presented
that discuss pilot scale studies to evaluate
fabric filter performance on high-sulfur
coal-fired power plants and flue gas
cleaning to improve  fabric  filter perfor-
mance.   A  session  on  O&M included
papers on fabric filters and ESPs, which
provided insights into O&M problems and
methods used to eliminate the problems.
A session on fugitive emission controls
covered  review  of an EPA manual on
identification, assessment, and control of
fugitive particulate emissions, and an EPA
manual on hood capture systems. Papers
are also  presented on field evaluation of
windscreens and measurement of fugitive
emissions in a coal-fired power plant.

Session B-1: FF:
Advanced Concepts I
  •Distribution of Fly Ash in a Filter Bag
  Operating  with  a  Charged  Axial
  Electrode
    G.E.R. Lamb, K. T. Duffy,
    Textile Research Institute
  *Study of Electrostatically Stimulated
  Filtration Fundamentals
    D. W. VanOsdell, A. S. Viner,
    K. D. Carter,
    Research Triangle Institute; and
    L. S. Hovis,
    U.S. EPA/AEERL
Session B-2: FF:
Advanced Concepts II
  •Mathematical  Model  for  Advanced
  Electrically Stimulated Fabric Filtration
    T. Yamamoto  D. S. Ensor,
    Research Triangle Institute; and
    R. B. Mosley,  L. S. Hovis, N. Plaks,
    U.S. EPA/AEERL
  'Advanced  ESFF  Laboratory  Test
  Results
    R. B. Mosley, L. S. Hovis, B. E. Daniel,
    U.S. EPA/AEERL
  •Advanced ESFF Applied to a Stoker
  Coal-Fired Boiler
    G. P. Greiner, ETS, Inc.; A. S. Viner,
    Research Triangle Institute;
    L. S. Hovis,
    U.S. EPA/AEERL; and
    R. Gibbs,
    U.S. Dept. of the Navy
  •Advanced Electrostatic Fabric Filtratior
  Experience  at  Southwestern Public
  Service Company
    R. Serrurier,
    Southwestern Public Service Co.
  •Economics of Advanced Electrostatii
  Stimulation of Fabric Filtration
    L S. Hovis,
    U.S. EPA/AEERL; and
    A. S. Viner,
    Research Triangle Institute

Session B-3: FF:
Practical Considerations
  Evaluation of Acid-Resistant Synthet
  Needled Felt Filter Media in Coal-Fire
  Boiler Pulse-Jet Baghouses
    W. T. Grubb,
    W. W. Criswell Co.
  Laboratory Studies  of the Filtratic
  Performance of Various  Filter Med
  under Simulated Field Conditions
    P. E. Frankenburg,
    E. I. DuPont de Nemours and Co.
  Evaluation of a Specific Type of Fill
  Bag Supplied by Various Vendors
    Y. J. Chen, P.  N. Roberts, T. D. Tarn<
    Joy Manufacturing Co.
  Catenary Analysis of a Fabric Filter B
  During Reverse-Gas Cleaning
    E. A. Samuel,
    General Electric Environmental
    Services, Inc.; and
    J. G. Musgrove,
    Bechtel Power Corp.
  •Aerosol Deposition in Fabric Filters
    D. S. Ensor, T. Yamamoto, A. S. Vir
    Research Triangle Institute

 Session B-4: FF:
 Pilot Scale Studies
  Performance  of  a  High-Sulfur-C
  Pilot-Scale Fabric Filter
                                   4

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    R. F. Heaphy, R. R. Wilson,
    Southern Research Institute; and
    W. E. Piulle,
    EPRI
  Flue  Gas  Conditioning for  Improved
  Baghouse Performance
    D. L. Laudal, S. J. Miller,
    University of North Dakota

Session B-5:
Operation and Maintenance
  "Operation  and  Maintenance  Experi-
  ence at Harrington Station
    W. Hooks, O. Plunk,
    Southwestern Public Service Co.; and
    D. L Harmon,
    U.S. EPA/AEERL
  "Computer  Monitoring of Pilot Plant
  Baghouse Performance
    A. S. Vmer, L. M. Fickel,
    Research Triangle Institute, and
    L. S. Hovis,
    U.S EPA/AEERL
  The Design of  Repairs  to Upgrade
  10-Year Old Industrial Precipitators
    V. L. Kunzweiler, J. B Landwehr,
    Burns & McDonnell
  Performance Improvement  History of
  Inadequately Performing Precipitators
    J G. Musgrove, W. R. Lane,
    Bechtel Power Corp., and
    M. W. Wei,
    Aluminum Company of America
  Performance Improvement  and  Fire
  Prevention in Fly Ash Collection System
  at a 500 MW Wood-Fired Power Plant
    E. Gal, M. Murphy,
    General Electric Environmental
    Services, Inc

Session C-7:
Fugitive Emissions
  'Identification, Assessment, and Con-
  trol of Fugitive Paniculate Emissions
    C. Cowherd, Jr., J. S. Kmsey,
    Midwest Research Institute, and
    D. L. Harmon,
    U S. EPA/AEERL
  "Process Fugitive Particulates — Design
  Methods for Enclosures
    H D. Goodfellow, T. Cesta,
    Hatch Associates, Ltd , Canada;
    E. R. Kashdan, D. W. Coy, J J. Spivey,
    Research Triangle Institute; and
    D. L Harmon,
    U.S EPA/AEERL
  "Field Evaluation of Windscreens as a
  Fugitive  Dust Control Measure for
  Materials Storage Piles
    R. A. Zimmer, K. Axetell, Jr.,
    T. C. Ponder, Jr.,
    PEI Associates, Inc.
  Measurement of Fugitive Emissions in
  a Coal-Fired Power Plant
    G. E. Muleski, F J Pendleton,
    Midwest Research Institute; and
    W. A. Rugenstem,
    The Detroit Edison Co.
  Barbara Emmel is with Radian Corp., Research Triangle Park, NC 27709.
  Dale L. Harmon is the EPA Project Officer (see below).
  The complete report consists of three volumes, entitled "Proceedings: Sixth
    Symposium on the Transfer and Utilization of Paniculate Control Technology."
    (Set Order No. PB 87-147 609/AS; Cost: $99.50)
    "Volume 1," (Order No. PB 87-147 617/AS; Cost: $36.95)
    "Volume 2," (Order No. PB 87-147 625/AS; Cost: $42.95)
    "Volume 3,"(Order No. PB87-147 633/AS; Cost: $36.95)
  The above reports will be available only from: (costs subject to change)
          National Technical Information Service
          5285 Port Royal Road
          Springfield, VA22161
          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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