Unitad States
Environmental Protection Agency
Office of Research and Development
Office of Air and Radiation
SEm The 1991 International
Symposium on
Radon and Radon
Reduction Technology
"A New Decade of Progress"
PROGRAM
April 2-5, 1991
Adam's Mark Hotel
City Avenue and Monument Road
Philadelphia, Pennsylvania 19131
Sponsored by:
U.S. Environmental Protection Agency
Air and Energy Engineering Research Laboratory
and
U.S. Environmental Protection Agency
Office of Radiation Programs
and
Conference of Radiation Control Program
Hirorfrire 
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Table of Contents
Topic	Page
General Information	2
Technical Program
Open/ng Session	4
Tuaaday, 8:30 am, Grand Ballroom* ABC
Session I - Government Programs end 4
Policies Relating to Radon
Tm*day, 9:45 am, Grand Ballroom* ABC
Session II - Radon-Related Health	5
Studies
Tuaaday, 1:45 pm, Grand Ballroom* ABC
Risk Communication Panel Session	5
Tuaaday, 4:45 to 6:45 pm. Grand Ballroom* ABC
Poster Session	6
Posters for Sessions I, II, and III
Tuaaday, 5:30 to 7:00 pm. Exhibition Cantar
Session III - Measurement Methods	7
Wadnaaday, 8:00 am, Grand Ballroom C
Session IV - Radon Reduction Methods 8
Wadnaaday, 1:45 pm. Grand Ballroom C
Session V - Radon Entry Dynamics	9
Wadnaaday, 8:00 am, Adam'* Ballroom
Session VI • Radon Surveys	10
Wadnaaday, 1:45 pm, Adam's Ballroom
Measurement PaneI Sessions	11
Wadnaaday, 5:15 to 7:15 pm, Grand Ballroom C
Poster Session	12
Posters for Sessions IV, V, VI, and VII
Wadnaaday, 5:30 to 7:00 pm. Exhibition Cantar
Session VII - State Programs and	13
Policies Relating to Radon
Thursday, 8:00 am, Grand Ballroom* ABC
Session VIII - Radon Prevention in	13
New Construction
Thursday. 10:10 am, Grand Ballroom* ABC
Session IX - Radon Occurrence in the 14
Natural Environment
Thursday, 3:05 pm. Grand Ballroom* ABC
Poster Session	15
Posters for Sessions VIII, IX, and X
Thursday, 5:30 to 7:00 pm, Exhibition Cantar
Session X - Radon in Schools and	16
Large Bui/dings
Friday, 8:00 am, Adam's Ballroom
1
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General Information
Symposium Overview
The 1991 International Symposium on Radon and
Radon Reduction Technology is being jointly
sponsored by the U.S. Environmental Protection
Agency (EPA) Air and Energy Engineering Research
Laboratory (AEERL), EPA Office of Radiation
Programs (ORP), and the Conference of Radiation
Control Program Directors (CRCPD), Inc. The
meeting will provide a forum for the exchange of
technical information on radon and radon reduction
technology in the indoor environment. Experience in
the diagnostics and application of radon reduction
and radon resistant construction techniques, the
measurement of radon and radon progeny, and the
assessment of radon derived health impacts will be
the major topics for this conference. The audience
will include radon mitigation professionals, equipment
manufacturers, representatives of government,
academia, and R&D firms.
Registration
Meeting/Exhibit Level
Monday, April 1, 4:00 to 9:00 pm,
Tuesday - Thursday, April 2-4, 7:00 am to
5:00 pm, and Friday, April 6, 7:00 to 9:00 a.m.
Fees	On/Before
M«rch 22
Total registration fee	$150
Non-optional (administrative) $130
Optional (breaks)	$ 20
Exhibits
May be viewed in the Exhibition Center during
meeting breaks and poster sessions.
Speaker's Breakfast and Slide Preview
All presenters of papers are encouraged to attend a
complimentary breakfast at 6:45 am in the
Gettysburg Room on the day of their presentation.
Audio-visual equipment for speakers to preview slides
and viewgraphs will also be set up in this room.
Information Center
Incoming messages will be posted on a bulletin board
at the registration desk on the Meeting/Exhibit Level.
Callers should request the EPA Radon Symposium
registration desk (Delaware Rooms 3 and 4).
After
March 22
$160
$140
$ 20
2
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Special Events
Spouse Program
Evening Mixer
Includes hot hors d'oeuvres in the Exhibition Center on
Tuesday, Wednesday, and Thursday evenings beginning
at 6 30 pm
The cost of the mixer program is $20 00
Overview of Historic Philadelphia
Wednesday (9 am to 3 pm)
Includes a visit to Independence Hall, the Liberty Bell,
the Betsy Ross House, other historic sites, and a motor
coach tour of the city Lunch cost is not included
The cost of this tour is 920 00
A Tour of the Brandvwine Valley
Thursday (9 am to 3 pm)
Includes a visit to Longwood Gardens (an important
horticultural showplace), and the Brandywine River
Museum which houses a permanent collection of art by
the Wyeth family Lunch cost is not included
The cost of this tour is $28 50
Poster Sessions
Poster Sessions/Mixers, 6 30 to 7 00 pm nightly in the
Exhibition Center
Tuesday, April 2 - Sessions I, II, and 111
Wednesday, April 3, - Sessions IV, V, VI, and VII
Thursday, April 4, - Sessions VIII, IX, and X
Preprints and Final Proceedings
Prepnnts containing both oral and poster papers will
be distributed to registered attendees Final
proceedings may be purchased (after September
1991) from the National Technical Information
Service (NTIS), Springfield, VA 22161, Phone (800)
336-4700 Anticipated cost is $150
Symposium Co-Chairpersons
Timothy M Dyess
U S Environmental Protection Agency
Air and Energy Engineering Research Laboratory, MD 64
Research Triangle Park, NC 27711
(919) 641-2802
Susan M Conrath
U S Environmental Protection Agency
Office of Radiation Programs, ANR-464
401 M Street, S W
Washington, DC 20460
(202) 475-6737
Charles M Hardin
Conference of Radiation Control Program Directors, Inc
206 Capital Avenue
Frankfort, KY 40601
(502) 227-4543
3
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Technical Program
Tuesday, April 2. 1991
OPENING SESSION
Grand Ballrooms A, B, and C
8 30 am Opening Remarks
Symposium Co-Chairpersons
8 40 Overview of CRCPD
Charles M Hardin, Executive Director,
Conference of Radiation Control Program
Directors (CRCPD), tnc
8	50 Welcome
Edwin B. Ehckson
EPA Region 3 Administrator
9	00 Lead
An Overview of the NAS Report on Radon
Dosimetry, Jonathan Samet, New Mexico Tumor
Registry, University of New Mexico
9 20 Keynote Address
John R Garrison, Managing Director,
American Lung Association
SESSION I
GOVERNMENT PROGRAMS AND POLICIES
RELATING TO RADON
9 45 am Introduction - Chairperson
Richard J Guimond, Director, EPA - Office of
Radiation Programs
9	55 The Need for a Coordinated International
Assessment of the Radon Problem, Fnednch
Steinhaus/er, International Atomic Energy Agency
fIAEAI, Austria
10	15 The European Research Program and the
Commission of European Communities, Jaak
Stnnaeve, CEC, Belgium
10 35 Break
10	55 UK Programs, Michael O'Riordan, National
Radiological Protection Board, United Kingdom
1115 US DOE Research Program • A Different
Perspective, Susan L Rose, U S Department of
Energy
11	35 US EPA Future Directions, Margo 0g6, EPA -
Office of Radiation Programs
Noon Lunch - Grand Ballrooms D, E, and F
4
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Tuesday. April 2, 1991
SESSION II
RADON-RELATED HEALTH STUDIES
Grand Ballrooms A, B, and C
1:45 pm Introduction - Chairperson
Jonathan Samat, New Mexico Tumor Registry,
University of New Mexico
1:55 Residential Radon Exposure and Lung Cancer in
Women, Goran Pershagen, Karotinska Institute,
Sweden
2:15 An Evaluation of Ecologic Studies of Indoor Radon
and Lung Cancer, Christine Stidley, University of
New Mexico
2:35 Comparison of Radon Risk Estimates, Richard
Hornung, N/OSH
2:55 Break
3:15 Lung Cancer in Rats Exposed to Radon and Radon
Progeny, Geratd Dagle, Pacific Northwest
Laboratory
3:35 Startling Radon Risk Comparisons, JoAnne D.
Martin, Douglas Martin and Associates
3:55 Estimated Levels of Radon from Absorbed
Polonium-210 in Glass, Hans Vanmarcke, Belgium
4:15 Expanded and Upgraded Test of the Linear - No
Threshold Theory for Radon-Induced Lung Cancer,
Bernard L. Cohen, University of Pittsburgh
4:35 Adjourn
4:45 RISK COMMUNICATION PANEL SESSION
Grand Ballrooms A, B, and C (until 6:45 pm)
Moderator, Ann Bostrum, Carnegie-Mellon
University
Apathy vs. Hysteria, Science vs. Drama: What
Works in Radon Risk Communication,
Peter Sandman, Rutgers University
American Lung Association's Radon Public
Information Program, Leyla Erk McCurdy,
American Lung Association
Ad Council Radon Campaign Evaluation, Mark
Dickson, EPA - Office of Radiation Programs
Developing a Community Radon Outreach
Program: A Model for Statewide Implementation,
M. Jeana Phelps, Kentucky Cabinet for Human
Resources
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5:30 pm Poster Session and Mixer - Exhibition Center
{Posters for Sessions I, II, and III)
State Indoor Radon Grant Program: Analysis of
Results After First Year of Funding, Lauria Amaro,
EPA • Office of Radiation Programs
EPA Radon Policy and Its Effects on the Private
Sector, David W. Saum, INFIL TEC
Evaluation of EPA's National Radon Contractor
Proficiency Program and Network of Regional Radon
Training Centers, G. Lea Salmon, EPA - Office of
Radiation Programs
State Certification Guidance, John Hoornbeek, EPA ¦
Office of Radiation Programs
The U.S. EPA Radon Measurement Proficiency (RMP)
Program, Philip Jalbert, EPA - Office of Radiation
Programs
Occupational Safety During Radon Mitigation: Field
Experience and Survey Monitoring Results,
Jean-Claude F. Dehmel, S. Cohen and Associates
Consumer Cost/Benefit Analysis of Radon Reductions
in 146 Homes, Kenneth D. Wiggers, American Radon
Services, Ltd.
The Effect of Passive Cigarette Smoke on Working
Level Exposures in Homes, Raymond H. Johnson,
Key Technology
Characterization of Structures Using Simultaneous
Single Source Continuous Working Level and
Continuous Radon Gas Measurements, Brian Fimian,
Radonics
Pennsylvania Department of Environmental Resources
Radon in Water Measurement Intercomparison,
Douglas Heim, Pennsylvania Department of
Environmental Resources
A Field Comparison of Several Types of Radon
Measurement Devices, Elhannan L. Keller, Trenton
State College
Radon and Water Vapor Co-Adsorption on Solid
Adsorbents, Negulb M. Hassan, University of
Missouri - Columbia
Calibration of Electret Ion Chamber for Passive
Measurement of Radon-220 (Thoron) in Air, P.
Kotrappa, Rad Elec
Unit Ventilator Operation and Radon Concentrations
in a Pennsylvania School, Bill Brodhaad, WPB
Enterprises
7:00 pm Meeting for State Radiation Control Personnel and
State Radon Contacts (until 9:00 pm)
Gettysburg Rooms 1 and 2
6
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Wednesday, April 3, 1991
SESSION III
MEASUREMENT METHODS
(Concurrent with Session V)
Grand Ballroom C
8:00 am Introduction - Chairperson
Wayne Lowder, Environmental Measurements
Laboratory, U.S. Department of Energy
8:10 Current Status of Glass as a Retrospective
Radon Monitor, R.S. Lively, Minnesota
Geological Survey
8:35 Soil Gas Measurement Technologies, Harry E-
Rector, GEOMET Technologies
9:00 Results From a Pilot Study to Compare
Residential Radon Concentrations with
Occupant Exposures Using Personal
Monitoring, Barbara R. Litt, New Jersey
Department of Environmental Protection
9:25 Questions and Answers
9:35 Break
9:55 Rapid Determination of the Radon Profile in a
Structure by Measuring Ions in the Ambient
Atmosphere, William G. Buckman, Western
Kentucky University
10:20 Intercomparison of Activity Size Distribution
Measurements with Manual and Automated
Diffusion Batteries - Field Test, P.K. Hopke,
Clarkson University
10:45 influence of Radon Concentrations on the
Relationship Among Radon Measurements
Within Dwellings, Janet Schoenberg, New
Jersey State Department of Health
11:10 The Use of Indoor Radon Measurements and
Geological Data in Assessing the Radon Risk of
Soil and Rock in Construction Sites in Tampere,
Anne VoutHainen, Finnish Centre for Radiation
and Nuclear Safety
11:35 Questions and Answers
11:50 Lunch • Grand Ballrooms D, E, and F
11:50 Lunch for State Radiation Control Personnel,
State Radon Contacts, and EPA Attendees
Jefferson Room
7
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SESSION IV
RADON REDUCTION METHODS
(Concurrent with Session VI)
Grand Ballroom C
1:46 pm Introduction - Chairperson
Arthur G. Scott, Arthur Scott and Associates
1:55 Causes of Elevated Post-Mitigation Radon
Concentrations in Basement Houses Having
Extremely High Pre-Mitigation Levels,
D. Bruce Henschel, EPA - Office of Research
and Development
2:20 A Measurement and Visual Inspection Critique
to Evaluate the Quality of Sub-Slab Ventilation
Systems, Richard Tucker, Gemini Research
2:45 Pressure Field Extension Using a Pressure
Washer, BUI Brodhead, WPB Enterprises
3:10 Questions and Answers
3:20 Break
3:40 A Variable and Discontinuous Sub-Slab
Ventilation System and Its Impact on Radon
Mitigation, Willy V. Abeele, State of New
Mexico Environmental Improvement Division
y
4:05 Natural Basement Ventilation as a Radon
Mitigation Technique, At Cavallo, Princeton
University
4:30 Attic Pressurization - A Radon Mitigation
Technique for Residential Structures, Myron Ft.
Edelkind, Southern Mechanical
4:65 Questions and Answers
5:05 Adjourn
6:16 Measurement Panel Sessions
See page 11.
5:30 Poster Session and Mixer
Posters for Sessions IV, V, VI, and VII
See page 12.
8
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Wednesday, April 3, 1991
SESSION V
RADON ENTRY DYNAMICS
(Concurrent with Session III)
Adam's Ballroom (Hotel Lobby Level)
8:00 am Introduction - Chairperson
David C. Sdnchez, EPA - Office of Research
and Development
8:10 A Modeling Examination of Parameters
Affecting Radon and Soil Gas Entry Into
Florida-Style Slab-on-Grade Houses, R.G.
Sextro, Lawrence Berkeley Laboratory
8:35 Effect of Winds in Reducing Sub-Slab Radon
Concentrations Under Houses Laid Over Gravel
Beds, Peter C. Owczarski, Pacific Northwest
Laboratory
9:00 Radon Entry Into Dwellings Through Concrete
Floors, K.K, Nietson, Rogers and Associates
Engineering
9:25 Radon Dynamics in Swedish Dwellings: A
Status Report, Gun Astri Swedjemark, National
Institute of Radiat'ton Protection, Sweden
9:60 Questions and Answers
10:00 Break
10:20 Soil Gas and Radon Entry Potentials for Slab-
on-Grade Houses, Bradley H. Turk, Lawrence
Berkely Laboratory
10:46 Direct Measurement of the Dependence of
Radon Flux Through Structure Boundaries on
Differential Pressure, D. T. Kendrick,
Chem-Nuclear Geo tech
11:10 Radon Resistance Under Pressure, William F.
McKelvey, Versar
11:36 Questions and Answers
11:60 Lunch - Grand Ballrooms D, E, and F
11:60 Lunch for State Radiation Control Personnel,
State Radon Contacts, and EPA Attendees
Jefferson Room
9
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SESSION VI
RADON SURVEYS
(Concurrent with Session IV)
Adam's Ballroom (Hotel Lobby Level)
1:46 pm Introduction - Chairperson
Friedrich Steinhausler, International Atomic
Energy Agency (IAEA), Austria
1:55 Factors Associated with Home Radon
Concentrations in Illinois, Thomas J. Bierma,
Illinois State University
2:16 Radon in Federal Buildings, Michael Boyd,
EPA - Office of Radiation Programs
2:35 Radon in Switzerland, H. Surbeck, Federal
Office of Public Health, Switzerland
2:55 A Cross-Sectional Survey of Indoor Radon
Concentrations in 966 Housing Units at the
Canadian Forces Base in Winnipeg, Manitoba,
Don A. Fig ley, Saskatchewan Research
Council, Canada
3:15 Break
3:35 Radon Studies in British Columbia, Canada,
Dave Morley, Ministry of Health, Canada
:56 The State of Maine Radon Project: Results,
L. Grodzins, Massachusetts Institute of
Technology
4:15 Radon in Belgium: The Actual Situation and
Plane for the Future, A. Poffijn, State
University of Gent, Belgium
4:35 A Radiological Study of the Greek Radon Spas,
P. Kritidis, Institute of Nuclear Technology,
Greece
4:55 Adjourn
5:16 Measurement Panel Sessions
See page 11.
5:30 Poster Session and Mixer
Posters for Sessions IV, V, VI, and VII
See page 12.
10
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Wednesday, April 3, 1991
MEASUREMENT PANEL SESSIONS
Grand Ballroom C
5:15 pm Detection of Radon Measurement Tampering
Moderator; Richard Mansfield, Employee Relocation
Council
Policy and Technical Considerations for the
Development of EPA Guidance on Radon and Real
Estate, Lawrence Pratt, EPA - Office of Radiation
Programs
Property Transfers Should Include Radon Gas Testing,
Michael A. Nardi, The Nardi Group
Update on AARST Real Estate Testing Guidelines,
Bill Brodhead, WPB Enterprises
Real Estate Transaction Radon Testing Interference,
Dean Hitter, ABE Radon Testing
How to Determine if Radon Measurement Firms are
Providing Accurate Readings, Herbert C, Roy, New
Jersey Department of Environmental Protection
Grab Sampling as a Method of Discovering Test
Interference, Marvin Goldstein, Building Inspection
Service
Exploring Software Device Management Routines That
Ensure the Overall Quality of Continuous Working
Level and Continuous Radon Monitor Performance in a
Field Environment, Richard Tucker, Gemini Research
Use of Grab Samples as a Quality Assurance Tool to
Enhance Overall Radon Measurement Accuracy and
Reproducibility, Brian Fimian, Radonics
6:15 pm Short-Term / Long-Term Meaeurement {untif 7:15 pm)
Moderator*. Richard Hopper, EPA - Office of Radiation
Programs
Predicting Long-Term Indoor Radon Levels from
Short-Term Measurements: Evaluation of a Method
Involving Temperature Correction, T. Agami Raddy,
Princeton University
Correlation Between Short-Term and Long-Term
Indoor Radon Concentrations in Florida Houses,
Susan E. McDonough, Southern Research Institute
Relationship Between 2-Day Screening Measurements
of 222Rn and Annual Living Area Concentrations in
Basement and Nonbasement Houses, S.B. White,
Research Triangle Institute
The Use of Multiple Short-Term Measurement to
Predict Annual Average Radon Concentrations,
Frank Marcinowski, EPA - Office of Radiation
Programs
11
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Wednesday, April 3, 1991
5:30 pm Poster Seaelon and Mixer - Exhibition Canter
{Posters for Sessions IV, V, VI and VII)
Radon Mitigation Failure Modes, William Yeager,
Research Triangle Institute
Mitigation by Sub-Slab Depreaaurization Under
Structures Founded on Relatively Impermeable Sand,
Donald A. Crawshaw, Pelican Environmental
Corporation
A Laboratory Test of the Effects of Various Rain
Caps on Sub-Slab Depressurization Systems, Mike
Clarkin, Camroden Associates
Analysia of the Performance of the Radon Mitigation
System Baaed on Charcoal Bad, P.K. Hopke,
Clarkson University
Control of Radon Releases in Indoor Commercial
Water Treatment, D. Bruce Harris, EPA - Office of
Research and Development
Model Calculations of the Interaction of a Soil
Depressurization System With the Radon Entry
Process, Ronald B. Mosley, EPA - Office of Research
and Development
Effect of Non-Darcy Flow on the Operation of
Sub-Slab Depressurization Systems, R.G. Sextro,
Lawrence Berkeley Laboratory
Effects of Humidity and Rainfall on Radon Levele in a
Residential Dwelling, Albert Montague, EPA Region 3
A Cumulative Examination of the State/EPA Radon
Survey, Jeffrey L. Phillips, EPA - Office of Radiation
Programs
Seaaonal Variation in 2-Day Screening
Measurements of 222Rn, N.F. Rodman, Research
Triangle Institute
The State of Maine Radon Project; Protocols and
Procedures of the Testing Program, L. Grodzins,
Niton Corporation
Results of the Nationwide Screening for Radon in
DOE Buildinga, Mark D. Pearson, Chem'Nuclear
Geotech
Quality Assurance - The Key to Successful Radon
Programs in the 1990's, Raymond H. Johnson,
Key Technology
Radon in Illinois: A Status Report, Melanie
Hamel-Caspary, Illinois Department of Nuclear Safety
12
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Thursday, April 4, 1991
SESSION VII
STATE PROGRAMS AND POLICIES
v	RELATING TO RADOI
<^Trand Ballrooms A, B, and Cy ^ j&fjP
8:00 am Introduction - Chairperson *—
Ihomas Geruskv, Papneyhrnwa Department of
En vitanmen ial nestmrces
8:10 Washington State's Innovative Grant:
(T^Jr*Tommunity Support Radon Action Team for	*
Schools, Pat McLachlan, Washington f&K'
Department of Health
8;l^y Kentucky's Innovative Grant: Radon in Schools
Telecommunication Project, M. Jeana Phelps,
Kentucky Cabinet for Human Resources
9:00
Regulation of Radon Professionals by States: The
Connecticut Experience and Policy Issues,
Alan J. Siniscalchi, Connecticut Department of
Health Services
4
Li*
New Jersey's Program - A Three-Tiered
Approach to Radon, Jill A. Lapoti, New Jersey
Department of Environmental Protection
9:50
Break
SESSION VIII
RADON PREVENTION IN-NEW-CONSTRUCTION
^and^Ballroorns A, B, and
10:10 am introduction - Chairperson
Michael C. Osborne, Chief, Radon Mitigation
Branch, EPA - Office of Research and
Development
/
10:20
Jgf
A Comparison of Indoor Radon
Concentrations Between Pre-Construction and
Post-Construction Mitigated Single Family
Dwellings, James F. Burkhart, University of
Colorado
10:46
Radon Reduction in New Construction:
Double Barrier Approech, Charles Kum, State
of New York, Department of Health
11:10
&
Radon Control - Towards a Systems
Approach, Mike Nuess, State of Washington
Energy Extension Service
J 1:35 Lunch - Grand Ballrooms D, E, and F
13
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Session Vtll (Continued)
Radon Prevention in New Construction
0
:30 pm Mini Fan for SSD Radon Mitigation in New
5?/	Construction, David W. Saum, INFILTEC
&
1:65 Building Radon Mitigation Into Inaccessible
Crawlspace New Residential Construction,
D. Bruce Harris, EPA - Office of Research and
Development
2:20 The Effect of Sub-Slab Aggregate Size and
/jO Particle Size Distribution on Pressure Field
Extension, Kenneth Gadsby, Princeton
University
2:45 Break
SESSION IX
RADON OCCURRENCE IN THE NATURAL
ENVIRONMENT^^
Grand Ballrooms A, B, and^E
3:05 pm Introduction - Chairperson
Robert Fakudiny, State Geologist, New York
State Geological Survey
3:1§^ Combining Mitigation & Geology: Indoor Radon
Reduction by Accessing the Source, Stephen T.
Hall. Radon Control Professionals
3:40/5f5f) Geologic Radon Potential of the United States,
Linda C.S. Gundersen, U.S. Geological Survey
4:05 Technological Enhancement of Radon Daughter
Exposures Due to Non-Nuclear Energy Activities,
J. KovaS, University of Zagreb. Yugoslavia
4:30 A Site Study of Soil Characteristics and Soil Gas
Radon, R.S. Lively, Minnesota Geological Survey
4:55 Geological Parameters in Radon Risk
Assessment, Donald Carlisle, University of
California, Los Angeles
5:20 Adjourn
5:30 Poster Session and Mixer
Posters for Sessions VIII, IX, and X
See page 15.
14
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Thursday, April 4, 1991
5:30 pm Poster Session and Mlxtr - Exhibition Center
(Posters for Sessions Vitl, IX, and Xt
Radon Prevention in Residential New Construction:
Passive Designs that Work, C. Martin Grisham,
NationsI Radon Consulting Group
Preliminary Results of HVAC System Modifications
to Control Indoor Radon Concentrations, Tarry M.
Brennan, Camroden Associates
Correlation of Soil Radon Availability Number with
Indoor Radon and Geology in Virginia and Maryland,
Stephen T. Hail, Radon Control Professionals
Paleozoic Granites in the Southeastern United States
as Source* of Indoor Radon, Stephen T. Hall, Radon
Control Professionals
Geologic Evaluation of Radon Availability in New
Mexico: A Progress Report, Virginia T. McLemore,
New Mexico Bureau of Mines & Mineral Resources
Comparison of Long-Term Radon Detectors and Their
Correlations With Bedrock Sources and Fracturing,
Darioush T. Gharemani, Radon Survey Systems
Geologic Assessment of Radon-222 in McLennan
County, Texas, Mary L. Podsednik, Law Engineering
Radon Emanation from Fractal Surfaces, Thomas M.
Semkow, Wads worth Center for Laboratories and
Research
National Ambient Radon Study, Richard Hopper,
EPA - Office of Radiation Programs
Design and Application of Active Soil
Depressurization Systems in School Buildings,
Kelly W. Leovic, EPA - Office of Research and
Development
Radon in Large Buildings: Pre-Construction Soil
Radon Surveys, Ralph A. Llewellyn, University of
Central Florida
Radon Measurements in North Dakota Schools,
Thomas H. Morxh, North Dakota State Department
of Health
Major Renovation of Public Schools that Includes
Radon Prevention: A Case Study of Approach,
System Design and Installation; and Problems
Encountered, Tom Meahan, TFM Safe-Air Radon
The State of Maine Radon Project: The Design
Study, Henry £. Warren, Niton Corporation
Design for the National Schools Survey, Lisa Ratcliff,
EPA - Office of Radiation Programs
15
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Friday, April 5. 1991
SESSION X
RADON IN SCHOOLS AND LARGE BUILDINGS
Adam's Ballroom (Hotel Lobby Level)
8:00 am Introduction - Chairperson
Alan J. Siniscalchi, Department of Health
Services, State of Connecticut
8:10 The Results of EPA's School Protocol
Development Study, Anita L Schmidt,
EPA - Office of Radiation Programs
8:35 Diagnostic Evaluations of Twenty-Six U.S.
Schools - EPA's School Evaluation Program,
Gene Fisher, EPA - Office of Radiation
Programs
9:00 Extended Heating, Ventilating and Air
Conditioning Diagnostics in Schools in Maine,
Terry Brennan, Camroden Associates
9:26 Mitigation Diagnostics: The Need for
Understanding Both HVAC and Geologic
Effects in Schools, Stephen T. Hall, Radon
Control Professionals
9:50 Break
10:10 A Comparison of Radon Mitigation Options
for Crawlspace School Buildings, Bobby E.
Pyle, Southern Research Institute
10:35 HVAC System Complications and Controls for
Radon Reduction in School Buildings,
Kelly Leovic, EPA - Office of Research and
Development
11:00 Radon Diagnosis and Mitigation of a Large
Commercial Office Building, David W. Saum,
INFILTEC
11:25 Design of Radon Resistant and Easy to
Mitigate New School Buildings, A.B. Craig,
EPA • Office of Research and Development
11:50 Closing Remarks
Noon Conference Ends
U.S. EPA Region III
Hernial Center for Environmental
Information
1C>50 Arch Street (3PM52)
Philadelphia, P& 19103
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NOTES
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NOTES
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