United States
Environmental Protection
Agency
Office of
Radiation Programs
Washington, D.C. 20460
EPA-520/1-B8-025-41
September 1988-
Radiation
vvEPA
The National Radon
Measurement Proficiency
(RMP) Program
Proficiency Report:
Rhode Island
(This publication valid through May 1989)
A Report Listing
Radon and Radon Decay Product Measurement Companies
-------
NATIONAL RADON MEASUREMENT PROFICIENCY (RMP) PROGRAM
PROFICIENCY REPORT: RHODE ISLAND
EPA Test Round 5
Prepared by
Research Triangle Institute
Radon Technical Information Service
Research Triangle Park, NC 27709
Prepared for
Radon Division (ANR-464)
Office of Radiation Programs
U.S. Environmental Protection Agency
Washington, DC 20460
Under the Direction of
US EPA Task Manager
Joseph R. Gearo, Jr.
National Coordinator
National (RMP) Program
September 1988
ii
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Table of Contents
Page
Introduction 1
Selection of Measurement Method 1
Program Requl rements 5
Explanation of Abbreviations 6
Table 1: Measurement Companies Serving
Your State 7
Appendix - Radon Instrumentation A-l
111
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INTRODUCTION
Recent public concern about the health
effects from exposure to radon has greatly
Increased the demand for companies qualified to
measure radon and radon decay products In
Indoor air. In response to States' requests
for assistance, the U.S. Environmental
Protection Agency's Office of Radiation
Programs has developed the National Radon
Measurement Proficiency (RMP) Program within
Its Radon Division. Under this program, any
company offering measurement services
directly, or Indirectly through another company
Is Invited to demonstrate Its proficiency In
measuring radon gas and/or radon decay product
concentrations.
The program's Immediate objective Is to
assist States and the public In selecting com-
panies that have demonstrated competence In
measuring Indoor radon and/or radon decay
products. This Is achieved by evaluating, on
an EPA scheduled basis, the proficiency of
companies' measurements and the quality of
their data management. Those companies that
demonstrate proficiency -In each of these areas
are listed In this Proficiency Report. The
program's long-term objectives are to promote
standard measurement procedures among
measurement companies and to establish quality
assurance procedures for all measurement
companies.
The National RMP Prooran Is not designed
for accrediting measurement companies, nor does
It certify. reccimr°nd. or 'endorse participating
companies. The Inclusion of a company In this
report should not be Interpreted as a certifi-
cation or accreditation of that company. This
report is only a source of measurement compa-
nies that have demonstrated capabilities for
measuring radon and radon decay product
concentrations.
The testing periods are referred to as
test "rounds". A company enrolls its
easurement methods (e.g.. activated charcoal
adsorption) for evaluation. A primary company
either owns analysis capabilities or makes all
measurements and analyses with its own
Instrumentation and operators. This type of
company may or nay not offer measurement
services directly to the public. A secondary
company offers services ranging from detector
distribution to home inspection and
consultation. It must use one of the primary
companies for Its detector analyses.
EPA Instructs the primary companies to
submit a specific number and type of detectors
(e.g., five charcoal canisters) for exposure to
known levels of radon and/or radon decay
products. After exposure, EPA returns the
detectors to the company without revealing the
radon gas or radon decay product concentration.
The company analyzes the detectors and reports
Its measurements to EPA. EPA compares these
measurements with the known levels of exposure.
Only companies having met all the program
requirements for a method In the performance
test are listed In this Proficiency Report.
Table 1 lists. In alphabetical order, all those
companies offering measurement services In your
State.
SELECTION OF MEASUREMENT METHOD
Several different measurement methods may
be used to determine the radon or radon decay
r
-------
product concentrations in houses. In practice.
the choice of a method Is often dictated simply
by availability If an adequate method Is
available, you use it. if alternative methods
are available, then the cost or the duration of
the measurement may become the deciding factor.
EPA has developed measurement protocols
for eight different methods and believes that
any of them, when used In accordance with EPA
protocols, can produce valid results. This
does not mean that all measurements made ac-
cording to the suggested protocols will produce
results with Identical uncertainties. However,
It does mean that the listed methods are capa-
ble of producing adequate results for screening
or followup purposes.
Each method has Its own advantages and
disadvantages. Users must decide which method
Is best suited to their situations. The fol-
lowing sections describe the characteristics of
the eight methods, pointing out some of the
advantages and disadvantages of each one. This
summary Is not exhaustive, but Is Intended to
guide the user In making an Informed selection
of a measurement method.
Continuous Radon Monitoring fCR) and Continuous
Horklno-Level Monitoring (DO
These measurement methods are similar
because they both use an electronic detector to
accumulate and store information related to the
periodic (usually hourly) average concentration
of radon gas or radon decay products. They are
deployed In houses according to guidelines in
the EPA protocol, tnd then turned on or
programmed for the desired operating time ~ a
minimum of six hours for screening and twenty-
four hours for followup measurements At the
end of the test, the monitor must be retrieved.
and the results must be analyzed by a skilled
Instrument operator.
Advantages
Relatively short measurement duration.
Hourly results can track the variation
of concentrations In the house.
Very precise (most models).
Results are available on site (for CN).
Disadvantages
Relatively expensive, cost may range
from $100 to $300. depending on the
type of services provided.
Requires a skilled Instrument operator.
This, as does any short-term measure-
ment. requires careful control of
closed-house conditions twelve hours
before and during the test.
Because of highly reactive nature of
radon decay products, working level
measurements are much more susceptible
to sampling error then radon gas
measurements.
Aloha-Track Detection
The alpha-track method measures radon. An
AT detector Is a small sheet of special plastic
material enclosed In a container with a filter
covered opening. The radon gas that enters the
container decays, emitting alpha particles.
These particles strike the plastic sheet
leaving tracks that can be chemically enhanced
and counted using a microscope or an automated
counting systeo.
The detectors are deployed In the home
according to guidelines In the EPA protocol.
They are left for periods of up to three months
-------
for screening and twelve months for followup
oeasureoents. At the end of the desired test-
ing period, they oust be returned to the dis-
tributor or analytical laboratory for process-
Ing and evaluation.
Advantages
Relatively low-cost services; cost nay
range froo $20 to $60.
No special skills required for making
the measurement.
Can be distributed by nail.
Completely passive, needs no external
power .
Can measure the long-tern average con-
centrations over a twelve-month period,
which Is the optimal measure of long-
tern concentrations.
Disadvantages
Relatively long measurement period
necessary; three months Is the recom-
mended minimum for currently available
detectors.
f
Activated Charcoal Adsorption
The charcoal adsorption nethod neasures
radon gas. The detectors for this method con-
sist of variously configured containers filled
Kith a neasured anount of activated charcoal.
The container Is often perforated or screened
to keep the charcoal froo falling out and sone
have a filter to keep out radon decay products.
All charcoal adsorbers are stored In airtight
containers when not being used for sampling.
Charcoal adsorbers can be received through
the nail from e distributor. They are deployed
In the hone for up to seven Cays, according to
guidelines In the EPA protocols. At the end of
testing, an edsorber Is reseated and returned
to the distributor or analytical laboratory for
processing and evaluation.
Advantages
Low cost for services; costs may range
from $10 to $25.
Can be distributed by nail.
No special skills needed for making the
measurement.
Completely passive, needs no external
power.
Kith proper analysis, can yield precise
results.
Disadvantages
Sone charcoal adsorbers are nore sensi-
tive than others to temperature and
humidity.
Halted to short-tern testing.
Requires, as does any short-term meas-
urement, careful control of closed-
house conditions twelve hours before
and during the test.
RPISU - Radon Progeny Integrating Sampling
Unit
The RPISU nethod neasures radon decay
products. RP detectors have a flow-rate air
punp that pulls air continuously through a
detector assembly. Depending on the node), the
unit can be Installed and operated by
homeowners or'skllled operators for three days
or longer according to guidelines In the EPA
protocol. At the end of that time, the
homeowner sends it to the distributor, or an
operator removes the unit and returns It to the
analysis laboratory for processing and
evaluation.
Adventaces
Directly measures concentrations of
radon decay products.
-------
Relatively short measurement period.
The detector assembly and some entire
units can be sent by mail.
There Is extensive experience in the
use of RPISUs; therefore, measurement
errors are well established.
Disadvantages
Relatively expensive; cost nay range
from $40 to J150, depending on type of
service provided.
Some models nay be both heavy and
awkward to nove.
May be United to locations with AC
power.
Some units must be Installed and picked
up by a skilled Instrument operator.
Because of the highly reactive nature
of radon decay products, measurements
are much more susceptible to sampling
error than radon gas measurements.
Grab SamolIno - Radon (GR1 and Radon Decay
Products fG>n
The grab sampling methods measure concen-
trations of radon gas or radon decay product
concentrations. The radon grab sample Is
collected In a special flask holding 100 to
2.000 cubic centimeters of air. The radon
decay product grab sample Is collected by
drawing air through a filter upon which radon
decay products. If present In the air, are
collected. Both samples can be acquired
simultaneously with some detector systems. All
sampling should be done In accordance with
guidelines In the EPA protocol.
For results of the greb radon test, opera-
tors oust return to their offices to analyze
the exposed detectors, end nust delay the anal-
ysis for at least four hours after the sample
is taken. For most grab working-level (radon
decay product) tests, operators can perform the
analysis on location In an hour or less.
Advantages
Results are quickly obtained.
Equipment can be portable.
Some detector systems can sample both
radon and radon decay products
simultaneously.
Can acquire and evaluate several
samples per day.
Conditions during the measurement are
known to the operator.
Disadvantages
Relatively expensive; costs may range
from $80 to $300. depending on the type
of services offered.
Very short neasurement periods may not
be representative of the long-term
average concentrations.
Requires a skilled operator.
Requires, as does any short-term
measurement, careful control of closed-
house conditions twelve hours before
and during the test.
Because of the highly reactive nature
of radon decay products, working level
. measurements are much more susceptible
to sampling error than radon gas
measurements.
E-PERM fEPl
E-PERM (Electret Passive Environmental
Radon Monitor) Is an Integrating detector used
to measure radon gas. It Is a canister
containing a charged electret which reacts to
the radiation emitted from radon and radon
decay products.
E-PERMs can be received through the ma 11
and Installed In a hone according to guidelines
-------
In the EPA protocol for two to seven days or
three to twelve months, respectively for short
or long-tern E-PERMs. At the end of the
testing period. It Is resealed and returned to
the analytical laboratory for processing and
evaluation.
Advantages
The E-PERM is a relatively Inexpensive
(cost nay range fron $8 - 125) small
detector that produces a result that is
a true Integrated average radon concen
tratlon.
Two types of E-PERMs are available.
a I ion ing the method to be used for both
short-tern and long-tern measurements.
The laboratory analysis of E-PERMs Is
nondestructive, aliening results to be
verified If necessary.
Once enrolled, a company must meet EPA's
Blnimun screening-measurement-requirements for
each sethod. A company must neet all detector
and analysis result deadlines as listed on its
program schedule. Applications, detectors, and
analysis reporting forms received after a
scheduled deadline will not be considered In
the performance evaluation process. A com-
pany's detector(s) oust be successfully tested
every round to maintain its proficiency
listing.
Disadvantages
E-PERMs are sensitive to background
gamma radiation, necessitating a
background check and subtraction of an
Increment of voltage.
EPA does not have extensive experience
with this nethod.
PROGRAM REQUIREMENTS
For each method, participants oust send
with their applications a copy of the operating
Instructions they provide homeowners and/or
those used by an Instrument operator. These
Instructions aust reflect the measurement
procedures found In the EPA documents, 'Interim
Indoor Radon and Radon Decay Product Measure-
ment Protocols' and 'Interim Protocols for
Screening and Followup Radon and Radon Decay
Product Measurement'. They oust be accepted
by. and on file with. EPA by the deadline
specified on that round's schedule.
-------
EXPLANATION OF ABBREVIATIONS
Methods Units
AT - Alpha-Track Detection (PCI/L)
CC - Activated Charcoal Adsorption (pCI/L)
CR - Continuous Radon Monitoring (pCI/L)
CH - Continuous Working-Level
Monitoring (WL)
GR - Grab Radon Sampling (pCI/L)
GH - Grab working-Level Sampling (HL)
RP - Radon Progeny Integrated
Sampllng/RPISU (WL)
EP - Electret-PERM (PCI/L)
Measurement Units
pCI/L - Plcocurles per liter, radon gas
measurement units.
WL - Work Ing-1 eve I. radon decay product
measurement units.
Others
DT - Detector(s) damaged or lost through no
fault of the participant.
Al - Underscored methods Indicate a primary
company capable of performing measurement
In house or making measurements using
operators employed by and Instruments
belonging to the company.
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TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
A A A Environmental Engineering Co.
1805 S. Bellaire Street
Denver, CO 80222
(303) 763-1O34
A ft A Radon Testing Services, Inc.
1805 South Bellaire Street
Denver, CO 6O222
(303) 753-1044
A ft W Radon Specialists, Inc.
12 Beochwood Road
Hudson, NH O3O51
(603) 883-3883, (BOO) 727-RAOO
A Black Cross Sanitation Company
1O24 Cottman Avenue
Philadelphia, PA 19111
(215) 342-5100
A. Arthur Lipshutz Associates
76SO South Tamiami Trail 9
Sarasota, FL 34231
(813) 923-73OO
A. S. McCreath A Sons, Inc.
P. 0. Box 1463
Harrisburg, PA 17105-1453
(717) 238-9331
AAA Radon Services
P. 0. Bon F
He Her town, PA 18065
(216) 888-6026
Measurement Methods
AT.CC
CC
CC
AT.CC
CC
CC
CC
Company
AAAirscan Engineering Corp.
8 Eric Drive
Granby, CT 06O35
(203) 653-5639 (2O3) 653-4787
ABE Radiation Measurements Lab
P.O. Box 214
Lenhartsville, PA 19534
(216) 756-4153
AIDCO Maine Corp
Grassy Pond House
Rindge, NH O3461
(603) 899-6166
ALLSAFE ENVIRONMENTAL CORPORATION
P.O. Box 89
Bayville, NJ O8721
(201) 269-6060 (800) 762-009
ALRAM
Abacus Labs Radon Assessment A Mit.
P. 0. Box 6490
Portsmouth, NH O38O1
(603) 433-3332 (800) 228-3332
ARIX Corporation (CO-Crand June.)
Sciences Division
76O Horizon Drive
Grand Junction, CO 815O6
(303) 242-6203 (215) 327-114O
ARIX Corporation, Inc. (PA)
1200 E. High St.
Pottstown, PA 19464
(215) 327-1140
Measurement Methods
AT.CC
AT.CC.CC
CC
CC
CC
AT.CC.CR
CC.GR
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
ft Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Aadvanced Aair Aanalysis
267O BiHingsley Road
Columbus, OH 43235
(614) 792-3400
Academy of IRM, Inc.
The Friary, Wi nchester-on-Severn
1600 Winchester Road
Annapolis, MD 214O1
(301) 757-7807
Advanced Radiation Monitoring Serv.
2219 Prosperity
Portage, MI 49081
(616) 323-9483
Air Chek, Inc.
Box 2000
Arden, NC 287O4
(704) 884-0893
Air Pollution Reg. Serv., Inc.
1640 Powers Ferry Rd.
Bldg 17 Suite 21O
Marietta, GA 30087
(4O4) 984-1919
Air Sciences, Inc/Overman Assoc.
P.O. Box 32O
Crystal City, MO 63O19
(314) 358-4011
Air-N-Sol Corporation
P. 0. Box 437
Frenchtown, NJ O8826
(201) 996-2028
Measurement Methods
CR
Company
CC
cc.cc
CC
AT.CC
CC
CW.GR.GW
Alabama Testing Laboratory
P. 0. Box 2337
Gadsden, AL 35903
(205) 547-5311
Allstate Radon Testing Service
2231 Pinecliff Drive
Atlanta, GA 3O345
(4O4) 938-2238
Alpha Concepts, Inc.
P. 0. Box 119
Hopatcong, NJ 07843
(201) 770-3046
Alpha Control, Inc.
6715 Lowell Ave., Suite 3
McLean, VA 22101
(703) 761-1408
Alpha Detectors
1O4O Serpentine Way
Sandy, UT 84O70
(801) 572-4659
Alpha Energy Laboratories, Inc.
PO Box 815069
Dallas, TX 75381
(817) 792-3434
Alpha Radon Environmental Testing
Government Center
P. 0. Box 737
Portland, ME 041O4
(800) 338-2999 (2O7)773-80O4
Measurement Methods
CC
CC
AT,CC,CR
AT,CC,EP,GR
CC
CC
AT.CC.CR.CW
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
ft Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Alpha Radon Testing Inc.
1915 Kyle PI.
Golden Valley, MN 66422
(612) 629-1949
Alpha Services
Air A Water Radon Testing
296 Orindie Brook Road
South Glastonbury, CT 06O73
(203) 659-8099
Alpha Spectra, Inc
P. 0. Box 6772
21O Clayton Street
Denver, CO 8O2O8
(303) 377-2118
Alphatech, Inc.
P.O. Box 254
Haverford, PA 19041-0264
(215) 525-149O (215) 525-6955
American Radon Consultant* Inc.
2515 Kemper, Apt. 103
Shaker Heights. OH 4412O
(216)791-1357
American Radon Corporation
8300 North Hayden Rd., Suite ICO
Scottsdale, AZ 85258
(602) 967-8029
American Radon Services, Ltd.
3O3 I.S.I.S. Center
Iowa State University
Ames, IA 60011-2130
(615) 296-9926
Measurement Methods
CC
CC
CC
CC
CC
Company
AT,CC.EP
CC.EP
American Radon Testing Labs. Inc.
Executive Club West, Suite 307
21360 Center Ridge Rd.
Rocky River, OH 44116
(216) 331-O200
Ames Assoc. Inc.
6935 Wisconsin Ave., Suite 30O
Chevy Chase, MD 20816
(3O1) 666-5222
Annapolis Property Services
P.O. Box 36O4
Anapolis, MD 214O3
(3O1) 721-4419
Appalachian Envir. Testing Inc
105 South Union St. Suite 326
Danville, VA 24541
(8O4) 792-1300
Applied Analytical Technologies Inc
P. 0. Box 668
Narragansett, RI 02882
(401) 782-8188
Applied Energy Company
3316 Augusta Avenue
Omaha, NE 68144
(402) 334-6881
Applied Health Physics Inc.
2986 Industrial Blvd. Box 197
Bethel Park, PA 151O2
(412) 563-2242
Measurement Methods
CC
CC
CC
AT.CC
CC
CC
AT,CC.EP
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
ff Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Applied Radon, Inc.
52205 Warahime Rd.
Cumberland. OH 43732-9804
(800) 638-2078
Applied Technical Services Inc
119O Atlanta Industrial Drive
Marietta, CA 30066
(404) 432-OS08 (800) 451-34O5
Aquatek Lab
Div of Craham-Massey Analytical Lab
2212 Main Street
Bridgeport, CT 066O6
(203) 576-O1O4
Asafe-House Inc.
260 Litchfield Turnpike
New Preston, CT O6777
(2O3) 868-O812
Asbestos and Radon Consultants
Qua Ii-Pro-Tech Svcs. Inc.
2O4 Devon Drive
Extern, PA 19341
(215) 363-7268
Assay Services
P. 0. Box 1266
Friendswood, TX 77646
(713) 482-6689
Atlantic Environmental Laboratory
16 Elm Street
West Haven, CT 06516
(2O3) 932-B8O8
Measurement Methods
AT.CC
AT.CC.EP
CC
Company
CC.CR
CC
CC
CC
Atometries
911 Veterans Blvd.
Suite 2O2
Metarie, LA 700O5
(504) 837-1367
Barringer Laboratories, Inc.
15000 W. 6th Ave. Suite 30O
Golden, CO 80401
(303) 277-1687
Basement De-Watering Systems
Safe-Aire, Inc.
162 East Chestnut Street
Canton, IL 61520
(800) 331-2943 (3O9) 647-0331
Battelle
505 King Avenue
Columbus, OH 432O1
(614) 879-5163
BiomonStoring Services Laboratory
Technical Resources, Inc.
3202 Monroe Street
Rockville, MD 2O852
(3O1) 77O-O61O
Bionomic Industries Inc.
P.O. Box 42
479 Route 17 North
Mahwah, NJ O7430
(201) 529-1094 (800) 338-3210
Boston Univ. Medical Center
Radon Testing Service
80 East Concord St.
Boston, MA O2118
(617) 638-7052
Measurement Methods
AT.CC
AT.CC
AT.CC.CR.EP
AT.CC.CR
CC
AT,CC,CW
CC
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
fl Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Boxford Radon Lab (B.R.L.)
52 WiIdmeadow Rd
Boxford, MA O1921
(608) 887-9641
Bradley Harrison Associates, Inc.
65 Virginia Ave
Freeport, NY 11620
(516) 546-2283 (616) 646-7760
Bryant and Bryant Service Company
992 1/2 Davidson Drive
Nashville, TN 37205
(615) 352-257O
8 COM Federal Programs Corporation
13136 Lee Jackson Memorial Highway
Suite 200
Fairfax, VA 22O33
(703) 968-0900
CDS Technologies, Inc.
6O5O TiIghman Street
AMentown, PA 181O4
(216) 398-7126
CMT Inc.
2813 Rio Vista
E/nporia, KS 66801
(316) 342-276O
Camp Dresser A McKee Inc.
Raritan Plaza 1, Raritan Ctr.
Edison. NJ 08818
(2O1) 226-7000 *
Measurement Methods
CC
CC
CC
AT.CC.CR.CR
AT.CC
CC
CC
Company
Campton Development Corp.
P. 0. Box 354
Campton, NH O3223
(603) 726-3030
Camroden Associates
RD #4 Box 62
Rome, NY 1344O
(315) 865-4269
Canberra Industries Inc.
One State Street
Meriden, CT O64SO
(203) 238-2351
CancerScreen, Inc.
112O First Colonial Rd. B1O3
Virginia Beach, VA 23454
(804) 481-4742
Cavin Analytical Consultants
216S-K West Park Court
Stone Mountain, GA 30087
(800) 533-1224, (4O4) 498-8295
Centarus Corporation
P. 0. Box 613
Glasgow, KY 42141
(502) 651-2396
Certus Laboratories
P. 0. Box 105633
Atlanta, GA 30348
(404) 762-5411
Measurement Methods
CC
AT.CC
CC
CC
CC.CR
CC
CC
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
§ Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Clean Air Engineering, Inc.
2O7 North Woodwork Lane
Palatine, IL 6OO67
(312) 991-3300
Columbia Radiological Testing Lab
4054 Victoria Court
Columbia, MO 65201
(314) 442-6O8O
ComnonweaIth Eng. Technology
3113 North Front Street
Harrisburg, PA 1711O
(717) 232-2288
Commonwealth Radon Specialists
22O4 Crundy Road
Woodbridge, VA 22191
(703) 494-6241
Community Radon Testing
Div. of Santiago Enterprises
1O51 NW 96th Terrace
Pembroke Pines, FL 33O24
(703) 451-8164 (80O) 451-8164
Con-Test, Inc.
126 Shaker Road
East Longmeadow, MA 01O28
(413) 625-1198
Connecticut Environmental Testing
431 Post Rd., East, Suite 681
Westport, CT O688O
(203) 226-7870
Measurement Methods
CC
AT.CC.CC
CC
CC
AT.CC
CW
CC
* Company
DMA Analysis Croup
52O Chestnut Street
Emnaus, PA 1BO49
(215) 965-2914
Dames A Moore
71O1 Wisconsin, Ave., Suite 700
Bethesda, MD 2O814
(301) 652-2215
David W. Jungblut, Geologist
Rt. 12, Box 168
Baptistown, NJ O88O3
(201) 996-3688
ECI
2955 Valmont, Suite 300
Boulder, CO 8O3O1
(3O3) 442-8995
ECtC Ortec
10O Midland Road
Oak Ridge, TN 3783O
(615) 483-2259
EKS RadTech
1000 Herald Square
Aston, PA 19014
(800) R U ALERT
EMPAC, Inc.
25 Science Park
New Haven, CT 06511
(203) 786-5420
Measurement Methods
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ft Non-comnercia I laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
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TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
ENV Services, Inc.
216 Goddard Blvd., Suite 117
King of Prussia, PA 19406
(215) 337-8222 (BOO) 345-6O94
Eastern Analytical Services, Inc.
4 Westchester Plaza
Elmsford, NY 10523-1601
(914) 592-8380 (914) 939-6992
Eberline Instrument Corporation
P. 0. Bon 21O8
Santa Fe, H4 87504-2108
(505) 471-3232
Ecodex
1 Aaron Rd.
Lexington, MA 02173
(617) 862-3440
Edinboro Scientific Company
P. 0. Box 689
Edinboro, PA 16412
(814) 734-4334
Electro-Analytical Laboratories
7118 Industrial Park Blvd.
Mentor, OH 4406O
(216) 951-3514
EnRad, Inc./Rad. T. A Eng. Inc
187O5 B. North Frederick Road
Caithersburg, MD 2O879
(3O1) 948-8040
Measurement Methods
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Entropy Environmentalists, Inc.
P. 0. Box 12291
Research Triangle Park, NC 27709
(919) 781-3B5O
Envir. Detection Assoc. Inc.
P. 0. Box lOOB
Pisgah Forest, NC 28768
(704) 877-4300
Envir. Health Consultant Inc.
15OS N. Prospect
Champaign, IL 61820
(217) 356-4797
Envir. Radiation Services, Inc
305 W. Magnolia, Suite 373
FT. Collins, CO 80521
(303) 226-5530 (3O3) 491-6554
Enviro Sciences, Inc.
1S48 Valwood Parkway
Suite 118
Carrol I ton, TX 75006
(214) 4O6-81OO (817) 792-3434
Enviro Technology Corporation
945 Spring Rd.
Pel ham Manor, NY 10BO3
(left blank)
Envirohazards Management, Inc.
P. 0. Box 1054
So. Orange, NJ O7O79
(2O1) 761-7226
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State Radiation Representative's Office.
f Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAM)
Company
Environ. Detection Associates
P. 0. Box 1006
Pisgah Forest, NC 28768-1008
(704) 877-4300
Environ. Testing Assoe. (Altoona)
24O Harvest Lane
Altoona, WI 6472O
(715) 832-8585
Environ. Testing Assoc. (Beloit)
22O1 East Ridge Road
Beloit, WI 63511
(608) 365-2774
Environ. Testing Assoc. (Madison)
9 White Pine Trail
Madison, WI 53717
(6O8) 833-4O73
Environmental Audit, Inc.
1901 W. 47th Place, Suite 310
Westwood, KS 662OS
(913) 384-0000
Environmental Chemistry
1233 Ogden Street, Suite KM
Denver, Colorado 8O218
(303) 831-O437
Environmental Consulting Lab.
61 College St.
New Haven, CT 0651O
(203) 776-9624 (2O3) 245-7O39
Measurement Methods
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Environmental Detection Management
P. 0. Box 12316
Research Triangle Park, NC 27709
(919) 469-8005
Environmental Enterprises, Inc.
P. 0. Box 16847
Atlanta, GA 3O321
(404) 766-6551
Environmental Health A Safety
Suite 211, PO Box 25002
Brandenton, FL 342O6
(813) 755-7660, (813) 794-0881
Environmental Health Inspections
Cross River Mill Prof. Plaza
Suite 5E, 1200 US Highway 9
Lakewood, NJ O87O1
(201) 905-8888
Environmental Quality Associates
3O8 Harrison St.
Fulton, NY 13069
(315) 593-2085
Environmental Radon Measurements
49 N. Orange Ave.
Orlando, FL 32801
(407) 648-1969
Environmental Science A Engin., Inc
P.O. Box 17O3
Gainesville, FL 32602-1703
(904) 332-3318
Measurement Methods
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State Radiation Representative's Office.
ft Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
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TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Environmental Science Lab, Inc.
26 Pearl St.
Suite 11O
Mansfield, MA O2091
(80O) 343-O7O7 (6O8) 966-4344
Environmental Science Services
235 Promenade Street
Providence, RI O2908
(401) 421-O398
Environmental Services ft Technology
22 Oakland Avenue
Atlantic Highlands, NJ 07716
(201) 291-6525
Environmental Sys. Service Ltd
P. 0. Box 22O
College Park, MD 2O74O
(301) 779-O606
Environmental Systems Service
P. 0. Box 512
Culpeper, VA 227O1
(703) 82S-686O
Environmental Testing Associates
6021 Sandy Springs Cir., Suite 2O5
Atlanta, GA 30326
(404) 25G-3884
Envlroserv, Inc-Radon Detect, of NJ
16 Buckley Hill Road
Morristown, NJ 07960
(201) 285-1066
Measurement Methods
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Company
Envirotest
P.O. Box 223
North Ridgeville, OH 44O39-O223
(216) 327-9432
Federal Radon Incorporated - MO
206 E. 3rd St.
Cameron, MO 64429
(816) 632-1318
Federal Radon Incorporated - NJ
93 Parmalee Avenue
Hawthorne, NJ O7506
(2O1) 427-9391
Femto Tech-Labs
P.O. Box 8257
Carlisle, OH 45005
(513) 746-4427
Foresight Engineering, Inc., VA
P. 0. Box 7333
Arlington, VA 22207-0333
(703) 525-4790
CEO-Environmental Services, Inc.
13O West Wieuca Road
Suite 108
Atlanta, GA 3O342
(404) 256-6437
GEOMET Technologies, Inc.
2O251 Century Boulevard
Germantown, MD 2O874
(3O1) 428-9898
Measurement Methods
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State Radiation Representative's Office.
f Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Gallipot, Inc.
24O1 Pilot Knob Road
St. Paul, MM B512O
(612) 681-9617 (SCO) 423-6967
Garden State 81dg ft Home Ins. Svc.
475 Valley Rd.
West Orange, NJ 07052
(2O1) 678-3333
General Health Physics Inc.
7217 Lockport PI
Lorton, VA 22079
(7O3) BSO-7E2B
General Physics Corporation
6700 Alexander Bell Dr.
Columbia, M> 21O46
(301) 290-2300 (301) 290-2514
Georgia Radon Detection Co.
3400 Elm Creek Drive
Marietta. GA 30064-1132
(4O4) 429-0384
Global Radon Testing Service
PO Box 1328
Cocoa Beach, FL 32932
(4O7) 784-1348, (BOO) 33O-7227
Great Plains Nuclear Services, Inc.
45O2 Leavenworth Street
Omaha, NE 68106
(402) 653-3581
Measurement Methods
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Great Tracers
3 Schoenbeck Road
Prospect Heights, IL 60070-1435
(312) 256-0436
Health Hazards Detection
Rt. 3, Box 373
Albany, KY 42602
(608) 387-7021
Health Physics Associates, Inc.
RD1 Box 796
Lenhartsville, PA 19634
(215) 756-4153
Health Science Services Corporation
P. 0. Box 102
Marlboro, NJ O7746
(201) 636-2066
Health and Safety Associates
35 Grove Street
Medford, MA 02155
(617) 488-7O81
Helix Environmental, Inc.
416 Triangle Avenue
Dayton, OH 45419
(513) 298-2990
Heritage Radon Services, Inc.
6968 Birchwood Road
Harrisburg, PA 17112
(717) 699-6060
Measurement Methods
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State Radiation Representative's Office.
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT (MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Home Inspection Service, Inc.
1916 Southland Avenue
Highland Park, IL 60O3B
(312) 831-4645 (312) 432-8681
Home Radon Detection Co.
6824 Elmonte
Fairway, KS 662OS
(913) 262-1555
Home Radon Detection Inc.
33488 Lone Rock
Wildwood, IL 60030
(312) 223-6517
Home Radon Surveys
42O9 01 ley Lane
Fairfax, VA 22O32
(703) 323-7236
Home Sentry, Inc.
P. 0. Box 655
Midland Park, NJ O7432
(2O1) 652-2497
Home Testing Labs Incorporated
299 West Fort Lee Road
Bogota, NJ O76O3
(201) 343-1199,(800) 221-1734
Home Testing Service
1 Aaron Road
Lexington, MA O2173
(617) 862-3440 «.
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Home-Tech Engineering, Inc.
658 Ridgewood Ave
Glen Ridge, NJ O7O28
(201) 744-6674
Horizon Engr. a Envir. Services Inc
699 Waldron Road
LaVergne, IN 37O86
(615) 793-7993
House Analysis ft Associates
747 Hallowed Drive
Huntingdon Valley, PA 19006
(215) 947-1169 (215) 947-92O9
House Check, Inc. -MD
2O25 Maryland Ave.
Baltimore, MD 21218
(7O3) 660-7625, (301)727-5563
House-Check, Inc.
P. 0. Box 731
Valley Forge, PA 19482
(215) 933-4431
Household Laboratories, Inc.
P. 0. Box 2247
Glenview, IL 60O25
(312) 724-633O
Hudson Valley Radon Testing Corp.
P.O. Box 790
Poughkeepsie, NY 12601
(914) 431-6424 (914) 485-5561
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State Radiation Representative's Office.
# Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAM)
Company
Infiltec, Falls Church, VA
P.O. Box 1533
Falls Church, VA 22O41
(7O3) 82O-7696
Inspex of Boulder, Inc.
2955 Valmont Street, Suite 30O
Boulder, CO 8O3O1
(303) 442-8995
International Radon, Inc.
2417 Regency Road
Lexington, KY 4O5O3
(606)278-O1O4; (800)537-6068
J H & Associates, Inc.
2524 E. 71st
Tulsa, OK 74136
(918) 496-9254
JRW Industries, Inc.
2312 North Second Street
Harrisburg, PA 17110
(717) 236-1418
John Prikkel and Associates
P. 0. Box 14145
Dayton, OH 45414
(513) 222-7749 (513) 278-3176
K ft J Solar Service
1142 Fillmore St.
Denver, CO 8O2O6
(303) 393-8372 *
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KBC Technology
Box 17O
R. R. 2
Raymond, IL 6256O
(217) 229-4437
KSE, Inc.
P. 0. Box 368
Amherst, MA O1OO4
(413) 549-5606
Key Technology, Inc.
P.O. Box 562
Jonestown, PA 17O38
(717) 274-8310
Lapteff Associates
P.O. Box 4160
Woodbridge, VA 22194
(7O3) 491-670O
Lifeline Envi ronmen taI Test ing
2522 Stuart Avenue
Richmond, VA 23220
(8O4) 358-4192
MBI - Radon Technology
P. 0. Box 21-157
St. Paul, MM 55121
(612) 464-4634
ft MIT/MIT Radon Project
BuiIding 26, Rm ft 421
Cambridge, MA O2139
(617) 253-4151
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAM)
Company
ft Maine Public Health Laboratory
Statehouse Station §12
Augusta, ME O4333
(207) 289-2727
Maryland Radon Laboratory, Inc.
P.O. Box 2578
Columbia, MD 21O46
(301) 997-2366, 997-7426
McCrone Environmental Services, Ine
1412 Oakbrook Dr., Suite 100
Norcross, GA 30O93
(404) 368-9600
Medrad, Inc.
Kappa Manor II
271 Kappa Drive
Pittsburgh, PA 16238-2870
(412) 767-4600
Menke Consulting, Inc.
6O7O Routzong Road
Greenville, OH 46331
(513) 447-4226
Metropolitan Radon Meas. Serv.
1565 Cliff Road, Suite 3-101
Eagan, MX E5122
(612) 681-1829
Metropolitan Radon Service
4011 Newbys Bridge Road
Chesterfield, VA 23832
(804) 745-4702
Measurement Methods
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Microbac Environmental Laboratory
P.O. Box 49
Fayetteville, NC 283O3
(919) 864-1920
Microbac Labs, Erie Testing Lab Div
2411 W. 26th St.
Erie, PA 16506
(814) 833-4790
Microbac Labs, Hanover, PA
7O1 3rd. Street
Hanover, PA 17331
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Microbac Labs, Johnstown, PA
Strand Testing Div.
110 Kinzey St.
Johnstown, PA 159O4
(814) 266-9548
Microbac Labs, KY
Kentucky Testing Laboratory
1121 W. Broadway
Louisville, KY 4O2O3
(502) 683-5256 (SO2) 689-6O19
Microbac Labs, MA Testing Division
202 Bussey Street
Dedham, MA 02026
(617) 326-7117
Microbac Labs, New Castle, PA
R. D. f3, Pulaski Road
New Castle, PA 161O5
(412) 664-4212
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# Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Microbac Labs, Pittsburgh, PA
4580 McKnight Road
Pittsburgh, PA 15237
(412) 931-5851
Microbac Labs, Schiller Div.
449 Rochester Road
Pittsburgh, PA 15237-1733
(412) 369-4830
Microbac Labs, Seaway Div
542-544 Conkey Street
Hamnond, IN 46324
(219) 932-1770
Microbac Mid-Atlantic, Inc.
56O8 Jefferson Avenue
Newport News, VA 236O5
(804) 245-8613
Mid America Radon Testing Inc.
P.O. Box 25643
Overland Park, KS 66225
(913) 469-1997
Midwest Radon Analysis Incorporated
P. 0. Box 33O93
Cleveland, OH 44133
(216) 682-4848
Mix lee Environmental Research Corp.
355f Fairfield Woods Road
Fairfield, CT 06430
(2O3) 371-71O2
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NAHB National Research Center
400 Prince Georges Center Boulevard
Upper Marlboro, M> 2O772
(301) 249-4000
NATLSCO
Route 22 A Kemper Drive
Long Grove, IL 6OO49
(312) 540-2488
NDL Organization, Inc., The
P. 0. Box 791
Peekskill, NY 1O566
(914) 737-7200
NOOAR, Inc.
Rt. 5, Box 333R
Athens, AL 35611
(2O3) 729-1900
National Radon Laboratories
Div. of Analytical Services Corp.
P. 0. Box 1O681
Arlington. VA 22210-1681
(703) 525-6672
National Radon Laboratories, Inc.
1OOO Johnson Ferry Road
Suite B 145
Marietta, GA 30068
(404) 565-3886
National Radon Testing Center, Inc.
18 Marshall Street
Norwalk, CT 06854
(203) 853-4777 (2O3) 853-1219
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State Radiation Representative's Office.
f Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Nationwide Testing
RD. 1 Box 266 B
Annandale, NJ O88O1
(201) 735-277O
Natkin Service Company
2241 W. Altorfer
Peoria, IL 61615
(3O9) 691-9206 (BOO) 642-8391
Natural Resources Laboratory, Inc.
110O Simms Street
Golden, CO 8O4O1
(303) 233-8156
Nering, Inc.
P. 0. Box 2O9
Ridgefield, CT OB877
(203) 431-3597
New England Radon Services
95 Vauxhall Street
New London, CT O832O
(203) 442-6675
New England Radon, LTD.
373 Main St.
Salem, NH O3O79
(603) 893-426O, (800) 637-2368
Niton Corporation
P. 0. Box 9153
Lexington, MA 02173
(617) 229-4929
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Northeast Radon Testing Svc., Inc.
P. 0. Box 94
Stormville, NY 12582
(914) 221-O236
Northeastern PA Envir. Council
P. 0. Box 3113
Scranton, PA 185O5
(717) 981-11SO
Northern Environmental Lab., Inc.
RR 1, Box 181O
Dixmont, ME O4932-974O
(800)635-3411
Northern Neck Radon Service
Route 1, Box 259-E
Hague, VA 22469
(804) 472-4252
Norton Conservation Co. Inc.
PO Box 583
Hackettstown, NJ 07840
(201) 852-6048
Nuclear Sources A Services Inc.
P. 0. Box 34042
Houston, TX 77234
(713) 641-0391
Nuclear Technology, Inc.
2O H. So. State Street
Westerville, OH 43081
(614) 899-2435
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State Radiation Representative's Office.
§ Non-conmercia I laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAM)
Company
f Nucleus, Inc.
P. 0. Box 2661
Oak Ridge, TN 37831-2561
(616) 482-4041
0. K. Rems Corp.
174 Flock Rd.
Merceryilie, NJ O8619
(609) 688-9627
Orkin Environmental Services
P. 0. Box 647
Atlanta, GA 3O3O1
(404) 888-2801
# Packard Instrumant Co.
2200 Warrenville Road
Downers Grove, IL 6O616
(312) 969-6000 (80O) 323-1891
Palmer Technology
P.O. Box 1072
Glen Burnie, MD 21061
(3O1) 766-3176
Petroleum Analytical Lab. Inc.
Post Office Drawer AK
Eaton Park, FL 33840
(813) 665-CO2B
Phoenix Labs
PO Box 472
Hoi I is, NH O3O49
(603) 465-7868
Measurement Methods
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Potomac Air Testing
41O2 Rosemary St.
Chevy Chase, MD 2O816
(301) 657-4391
Princeton Testing Laboratory
Princeton Service Center
349O U.S. Route 1
Princeton, NJ O854O
(6O9) 452-9O5O
Pro Chek, Inc.
Box 2000
Arden, NC 28704
(800) 522-2435
Protect-A-Home
P. 0. Box 584
Newtown, CT 06470
(203) 426-3000
Pylon Electronic Development
147 Colonnade Rd.
Nepean, Ont., Canada K2E7L9
(613) 226-7920
Pyramid Environmental Systems, Inc.
P. 0. Box 648
Sparta, NJ 07871
(201) 729-9375, 679-3089
Quantum Information Ltd.
P.O. Box 467
Westtown, PA 19395
(215) 431-9577
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
R. F. Simon Co. Inc.
RO 2. Box 481
Barto, PA 19BO4
(216) 764-6455 (216) 764-97O6
R. K. Occupational ft Environmental
Analysis, Inc.
616 Warren St.
Alpha, NJ O8865
(216) 25O-6948
R.A.D. Service t Instruments Ltd.
5O Silver Star Blvd., Unit 208
Scarborough, Ontario MIV3L3
Canada
(416) 298-920O
RAD Environmental Services, Inc.
2306 Rodeo Dr.
Durham, NC 277O4
(919) 688-9226
RADON SURVEY SYSTEMS, Inc.
24200 Chagrin Blvd., Suite 254
Cleveland, OH 44122
(216) 464-7997, 484-20O2
RAF Engineering
Hillside Road
Rockaway, NJ O7866
(201) 983-9O41
ROD
Residential Envir. Med. Diagnostics
28 School Street, P. 0. Box 3285
Stony Creek, CT 064O5
(203) 481-8211 *
Measurement Methods
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28O Broadway
Providence, RI O2903
(4O1) 272-1O40
RPI Radon Measurement Services, PA
P.O. Box 347
Hershey, PA 17O33-O357
(717) 633-8100, 633-6192
Ra-Tek, Div. of Shamrock Lawn Care
P. 0. Box 496
800 East Main Street
Marshall, MM 56258
(5O7) 632-7313 (507) 632-6881
Rad-Elec, Inc.
PO Box 1126
6330 Spectrum Dr.
Frederick, MD 21701
(3O1) 694-0011
Radex, Inc.
1382 Prince Ave.
Suite A
Athens, GA 3O6O6
(404) 648-6960
Radiation Consultants, Inc.
P. 0. Box 34012
Houston, TX 77234
(713) 476-0072
Radiation Data - CT
Div. of Princeton Geophysical Serv.
37 Castleman Drive
Southington, CT 06489
(2O3) 621-0678
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State Radiation Representative's Office.
f Non-comnercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods'indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Radiation Data - NJ
Div. of Princeton Geophysical Sarv.
115 Wall Street
Princeton, NJ 08540
(609) 921-7061
Radiation Protection Services
P. 0. Box 2395
Darien, CT 06820-1295
(203) 324-7987, (2O1) 390-736O
Radiation Safety Associates, Inc.
P. 0. Box 107
Hebron, CT 06248
(203) 228-O487
Radiation Safety Engineering
6105 South Ash, Suite 1
Tempe, AZ 85283
(602) 897-9459
Radiation Safety Services, Inc.
1564 Ashland Avenue
Evanston, IL 6O2O1-407O
(312) 465-1999
Radiation Service Organization, Inc
P.O. Box 1526
Laurel, MO 2O7O7-O953
(301) 953-2482, 792-7444
Radiological Health Sciences, Inc.
P.O. Box 4790
Ft. Walton Beach, FL 32549
(904) 863-1191
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Radon ft Water Testing Service
1O8O6 Lafayette-P.C. Road
Plain City, OH 43064
(614) 873-8821
Radon / So!Is, Water Testing Lab
7O8O Price-Milliard Road
Plain City, OH 43O64
(614) 873-8821
Radon Alert Detection Center
P. 0. Box 323
Flourtown, PA 19031
(800) 345-6348 (215) 247-9197
Radon Analysis A Detection of N.E.
Ill Jefferson St.
Laeonia, NH O3246
(603) 528-5772
Radon Analysis Incorporated (NJ)
7 Chamberlain Road
Flemington, NJ 08822
(2O1) 788-O661
Radon Analytical Labs, Inc.
8935 North Meridian St.
Suite 110
Indianapolis, IN 4626O
(317) 843-0788
Radon Awareness ft Detection
14O8 S. Rock Hill Rd.
St. Louis, MO 63119
(314) 961-O40O
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
INJ
en
Radon Check (NC)
Box 7882
Greensboro, NC 27417
(919) 855-1312
Radon Check of Virginia
3816 Carolyn Ave.
Fairfax, VA 22O31
(703) 386-6406
Radon Check-Div of Horlion Sys
P. 0. Bon 721
Harvard, MA O1451
(617) 456-8811
Radon Consultants, Inc., VA
4012 N. 35th Street
Arlington, VA 222O7
(703) 522-6669 (3O1) 738-704O
Radon Consulting ft Testing Service
7449 Hiway 44, Box #9
Crystal River, FL 32629
(904) 563-2141 (9O4) 663-1771
Radon Control Professionals Inc.
11920 Fieldthorn Court
Reston, VA 22O94
(7O3) 471-9459
Radon Control Professionals, Inc.
11920 Fieldthorn Court
Reston, VA 22O94
(703) 471-9459
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Radon Detection ft Consulting
P. 0. Box I486
Lawrence, KS 66O44
(913) 843-7377
Radon Detection Services (GA)
403 W. Ponce de Leon Ave.
P.O. Box 1826
Decatur, GA 3O031
(4O4) 377-2366
Radon Detection Services, Inc., MD
1O40O Connecticut Ave.
Suite 604
Kensington, MD 20895
(3O1) 933-7900
Radon Detection Services, Inc., NJ
P.O. Box 419
Ringoes, NJ O8551
(201) 788-3080
Radon Detection Services, PA
P. 0. Box 3309
Allentown, PA 18106
(215) 481-95E5
Radon Detection Systems (NJ)
8 Quincy Court
Parcippany, NJ O7O54
(3O3) 444-6253
Radon Detection Systems, CO
2450 Central Avenue, Suite A-l
Boulder, CO 8O3O1
(3O3) 444-6262 (800) 627-2366
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State Radiation Representative's Office.
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
ro
en
Radon Detection and Control
P. 0. Box 419
South Heights, PA 15081
(412) 375-1700
Radon Detection of MS
PO Box 9699
Columbus, MS 397O5
(601) 328-4687
Radon Detectors
RD fll, Box 177, RT 224
Van Etten, NY 14889
(607) E89-6223
Radon Diagnostic Laboratories
231 Front Street
South Portland, ME O41O6
(207) 767-2818
Radon Diagnostics, Inc.
P.O. Box 761
Andover, NJ O7821
(201) 729-1251
Radon Engineering Services Inc
3129 Overton Rd.
Birmingham, AL 35223
(205) 967-266S
Radon Engr, a Unit of PSI Engr, Inc
One Lethbridge Plaza
Mahwah, NJ O743O
(201) E29-830O
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Radon Environ. Testing Svcs, Inc.
P. 0. Box 7O
Vandal!a, OH 45377
(513) 898-6141
Radon Environmental Monitoring, Inc
Box 6305
Evanston, IL 6O2O4
(312) 328-6628
Radon Environmental Svcs, Inc. - IN
8935 N. Meridian St.,Suite HO
Indianapolis, IN 46260
(317) 843-O804
Radon Environmental Svcs, Inc. - TN
8935 N. Meridian St.
Indianapolis, IN 46260
(317) 843-O804
Radon Evaluation Div., Evaldo Ltd.
64 Sunset Hill Dr.
Branford, CT O640S
(203) 488-4715
Radon Gasbusters
892 Green Lane
Union, NJ 07083
(201) 353-5577
Radon Inspection Service, Inc.
789 East Glen Avenue
Ridgewood, NJ O745O
(2O1) 67O-8B21
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by end instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
IXJ
j
Radon Instrumental Detection
Suite 8116, 8000 W. MObh
Overland Park, KS 6621O
(913) 451-9270
Radon Intervention
P.O. Box 827
Three Rivers, TX 78O71
(512) 788-4276, 1-800-232-1811
Radon Labs (Woburn)
P.O. Box 2243
Woburn, MA O1888-O443
(617) 664-0316
Radon Laba of Atlanta
6400 B-l Hwy 29
Li Iburn, GA 30247
(404) 279-0005
Radon Labs, Inc.
3 Deer Trail
Tabernacle, NJ O8O88
(800) 627-4B2O (609) 859-O944
Radon Labs. (Cambridge)
P.O. Box 2054, Harvard Square
Cambridge, MA 02138
(617) 876-O46O
Radon Ltd.
411 North Weinbach Ave.
Evansville, IN 47711
(812) 479-3110 (800) 634-2901
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Radon Measurement A Control of NM
1527 Granite St. NW
Albuquerque, NM 871O4
(SOS) 843-7643
Radon Measurement and Services
13131 West Cedar Drive
Lakewood, CO 80228
(303) 98O-5O86
Radon Measurements Inc.
2916 West T. C. Jester
Houston, TX 77O18
(713) 683-8227
Radon Mitigation Services
4O44 SW 13th Street |163
Gainesville, FL 32608
(904) 375-5656
Radon Mitigators, Inc.
16 Hillside Drive
Clinton, NJ O88O9
(2O1) 73O-6596
Radon Monitoring Services, Inc.(MA)
P. 0. Box 3730
Plymouth, MA 02361
(617) 746-8868
Radon Project, The
P. 0. Box 90069
Pittsburgh, PA 15224
(412) 687-3393
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State Radiation Representative's Office.
f Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAM)
Company
IVJ
CD
Radon QC
Palmar Professional Building
2857 Nazareth Road
Palmer, PA 18O43
(216) 659-1636
Radon Reduction Engineering A Lab
211 Mi 11 Street N.E.
Vienna. VA 2218O
(703) 281-7866 (703) 281-373O
Radon Remedies
85 S. Algonquin Ave.
Columbus, OH 432O4
(614) 272-7772
Radon Research Croup, Inc.
P.O. Box 1143
Germantown, MD 20874
(SCO) 446-8436, (3O1) 972-3309
Radon Resources
241 Rumson Road
Atlanta, CA 3O3OS
(4O4) 231-4732
Radon Safe (MI)
7696 Mieaton Drive
Canton, MI 48187
(313) 466-6469
Radon Safety Services, Inc.
1474 Route 23 N Suite 3
Wayne, NJ 07470
(201) 633-8337 (2O1) 633-B4O6
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Radon Safety Testing, Inc.
P. 0. Box 277
Gales Ferry, CT 06335-0277
(203) 886-8327
Radon Safety and Technology Corp.
4 Charles Street
Pleasant Valley, NY 12569
(914) 635-1138 (80O) 652-5257
Radon Screening Inc.
7 Brookcrest Ct.
Fredericksburg, VA 224O1
(703) 786-4320
Radon Screening Service, Inc.
P. 0. Box 37007
Denver, CO 8O237
(303) 741-32O7
Radon Services
121O Auburn Way N. Suite B-122
Auburn, WA 98OO2
(206) 939-3O23
Radon Services Analytical Lab.
Ill Benson Rd.
Nashville, IN 37214
(616) 883-4659
Radon Services of North America Inc
148 East 632 North
Valparaiso, IN 46383
(219) 462-6866
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State Radiation Representative's Office.
ft Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
ro
03
Radon Services, Inc.
2950 Banksville, Road
Pittsburgh, PA 16218
(412) E83-OSS3
Radon Specialist of America
12628 Grey Eagle Ct., Suite 12
P. 0. Box 81O
Germantown, MD 2O874
(3O1) 231-4O91
Radon Systems of Rhode Island
156 Earle Street
Woonsocket, RI O289S
(401) 766-7O72
Radon Technologies Inc. (VA)
122OO Sunrise Valley Drive
Reston, VA 22O91
(800) 237-5024
Radon Testing A Environmental Cntrl
7113 Chippenham Road
Louisville, KY 4O222
(502) 426-4314
Radon Testing Consultants, Inc.
PO Box 26313
Newark, NJ 07101
(201) 290-9217
Radon Testing Corp. of America
12 W. Main Street
Elmsford, NY 10523
800/457-2386, 800/637-7812 -NY
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Radon Testing Corporation
P.O. Box 329
College Park, MD 2074O
(301) 283-6006
Radon Testing Inc.
P.O. Box 7304
Fairfax Station, VA 22O39
(703) 691-1111
Radon Testing Lab of New Eng.
P. 0. Box 45O8
Boston, MA O2101
(617) 426-9224
Radon Testing Services (San Diego)
P. 0. Box 152227
San Diego, CA 92116-O87O
(619) 229-9002 (619) 287-6317
Radon Testing Services (UT)
4O96 Scenic Drive
Provo, UT 84604
(800) 777-232O
Radon Testing Services of MO
PO Box 362
Trenton. MO 64683
(816) 359-4442
Radon Testing Svc, Pittsburgh, PA
P. 0. Box 19425
Pittsburgh, PA 15213
(412) 687-1533
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Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Radon Testing Svcs, Baltimore, MD
P. 0. Box 7999
Baltimore, M> 21221-0999
(301) 321-8008
Radon Trae, Inc.
2225 Industrial Blvd.
P. 0. Box 4O15
Sarasota, FL 34234
(813) 355-7136
Radon X Company, Inc., The
217 Roxbury Street
Keene, KM O3431
(603) 352-6319, (802) 267-4876
Radon-One Lab Service, Inc.
47OO East Fifth Avenue
Columbus, OH 43219
(614) 239-7171
Radonies, Inc. - CT
99 Spruce St
Southport, CT O649O
(800)8-Radon-O; (2O3)264-O924
Radonix Ltd.
P. 0. Box R
Lake Grove, NY 11766
(516) 467-3780
Randolph ft Associates, Inc.
89O1 N. Industrial Road
Pooria, IL 61616
«
(309) 692-4160
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Real Estate Support Services, Inc.
7825 Washington Ave. So. Suite 900
Minneapolis, MN 65436
(612) 941-7568
Recon Systems, Inc.
P.O. Box 46O
Three Bridges, NJ O8887
(201) 782-6900
Residence Radon
28077 W 85th Terr.
Desoto, KS 66018
(913) 686-1094
Residential Radon Test Service Inc.
126 Old Oaken Bucket Raod
Scituate, MA O2068
(617) 545-9160
Retrotec USA, Inc.
6215 Morenci Trail
Indianapolis, IN 46268
(317) 297-1927
Rocky Mtn Medical Physics Inc.
7175 W. Jefferson Avenue
Suite 2150
Lakewood, CO 8O235
(303) 98O-7070
Rogers Assoc. Engineering Corp.
516 East 4500 South, Suite G-20O
Salt Lake City, UT 84107
(801) 263-1600
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State Radiation Representative's Office.
f Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
ResentioI Research Center
Brandeis University
415 South St.
Waitham, MA O2154
(617) 736-2461
Ross Systems, Inc.
21 Main St.
PO Box 67O
Blairstown, NJ O7826
(2O1) 362-5571
Roy F. Weston, Inc.
One Weston Way (Bldg. 4-2)
West Chester, PA 19380
(215) 692-3030 ext 2746
Rueck Associates
1O3 Sage Road
Silver Lake, KS 66539-9461
(913) 582-4050
Ryan Nuclear Laboratories
P.O. Box 88
West Jefferson, OH 43162
(614) 879-7735
Sam Stewart Testing
P. 0. Box 7304
Fairfax Station, VA 22039
(703) 250-9203
Scientific Analysis, Inc.
6012 East Shirley Lane
Montgomery, AL 36117
US:800-345-2575 AL:800-288-168
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Scientific Testing Associates, Ltd.
Star Route Box 124
Topping, VA 23169
(804) 758-5728
SepTech
W. 2O4 St. Thomas Moore Way
Spokane, WA 99208
(509) 467-6274
Solar Testing Laboratories Inc.
9540 Midwest Avenue
Garfield Heights, OH 44125
(216) 663-1800
Solid State Radon Detection
P. 0. Box 1O7
Clenwood, NJ O7418
(2O1) 764-8555
Sorensen Enterprises, Inc.
PO Box 1363
Maryville, TN 37802-1363
(615) 984-1376
Southern Mechanical
6O5O W. McDonough Dr.
Norcross, GA 30093
(4O4) 289-9637, 242-8999
Southern Radon Services, Inc.
1000 Johnson Ferry Rd.
Suite B-145
Marietta, GA 30068
(4O4) 666-3888
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State Radiation Representative's Office.
( Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
fj Southern Research Institute
P. 0. Box 6S3OS
Birmingham, AL 35255-6305
(205) 681-2445 (2O6) 681-2424
Southwest Abatement, Inc.
42OO Broadway S.E.
Albuquerque, KM 87102
(60S) 873-2967
Special Envir. Services, Inc.
P. 0. Box 20068
Atlanta, CA 3O326
(404) 355-B600
Stan A. Huber Consultants, Inc.
200 North Cedar Road
New Lenox, IL 6O451
(815) 485-6161
Standor Radon Detection
698 S. Edgewood Ave.
Jacksonville, FL 32205
(904) 388-O284
Star Laboratories, Inc.
P. 0. Box 1666
Plymouth, MA 02360
(617) 747-5227
Sun Nuclear Corporation
415-C Pineda Court
Melbourne, FL 32940
(407) 259-6862
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Swat Termite and Pest Control, Inc.
1797 Roswell Rd.
Marietta, CA 30062
(404) 665-7928
T. R. Edgerton, Inc. (TREI)
1O2 F Woodwinds Industrial Court
Cary, NC 27E11
(919) 469-9795
TCS Industries, Inc.
38O5 Paxton Street
Harrisburg, PA 17111
(717) B58-85O6
TEQ Corporation
P.O. Box 570
WiIkes-Barre, PA 187O3-O570
(717) 825-3939
TMA/Eberline, Health Physics
6635 Kircher Blvd. N.E.
Albuquerque, MM 87109
(505) 345-9931
TMA/Eberline, Laboratory
7021 Pan American Highway, NE
Albuquerque, NM 871O9
(506) 345-3461
TMB Co
3900 Parkside Drive
Baltimore, MD 21206
(3O1) 485-8734
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State Radiation Representative's Office.
IP Non-commercia I laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
Vising operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
TRC-ECI
80O Connecticut Blvd
East Hartford, CT 06108
(203) 289-8631
Target Radon Services, Inc.
Oakland Center
894O-A Route 1O8
Columbia, MO 21045
(301) 992-6622
Technorad
P. 0. Box 2144
Rockville, M> 208S2
(3O1) 881-8293
Tachtrac
P. 0. Box EOSO Suit* 303
Lewi svi lie, TX T5O67
(214) 221-1047
Teledyne Isotopes
60 Van Buren Avenue
Westwood, NJ 07676
(2O1) 664-707O
Temple University
CECSA 084-63
Attn: Radon Program
Philadelphia. PA 19122
Termini* International
P. 0. Box 17167
Memphis, TN 38187
(901) 766-1379 (9O1) 766-1359
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Terradex Corporation
3 Science Road
Clenwood, IL 60426
(312) 766-7000
Terradon Exploration Technologies
P.O. Box 22288
Cleveland, OH 44122
(216) 464-2CO2
Todd Giddings and Associates, Inc.
3O49 Enterprise Drive
State College, PA 16801
(814) 238-6927
Tom Scurry Associates
1976 Linden Drive
Boulder, CO 8O3O2
(303) 444-4802
Tri Court Safety and Security
P. 0. Box 1257
Sunset Beach, CA 90742
(714) 846-4346
True Test Co., WA
1436-C Brandt Rd.
Vancouver, WA 98661
(206) 696-O957
Tucson Home Inspections, Inc.
P. 0. Box 6O846
Tucson, AZ 86703-1845
(602) 881-5511
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State Radiation Representative's Office.
| Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
Ul
4*
Twin City Testing
662 Cronwell Ave.
St. Paul, MM 6S114
(612) 645-3601
U-Teeh Industries
42 Edgebero Road
East Brunswick, NJ 08816
(201) 249-6600
U. C. I./Envirotest
34100 Center Ridge Road
North Ridgeville, OH 44O39
(216) 327-9432
U.S. Toxic Substance Testing Bureau
1O24 Cottman Avenue
Philadelphia, PA 19111
(216) 745-7778, (SCO) 635-8378
U.S.T. Labs
1O24 Cottman Ave.
Philadelphia, PA 19111
(215) 745-7778, (SCO) 536-8378
ff US Army Envlr. Hygiene Agency
Attn: HSIIO-ML-RR
Aberdeen Proving Ground, MO
21010-5422
(301) 671-2619/2637
ft US Department of the Army
Belvoir RDAE Center
Attention: STRBE-VR (Guadagno)
Fort Belvoir, VA 22O6O-5606
(703) 664-5133
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ft US E.P.A., Las Vegas, NV
4220 S. Maryland Parkway
LaPlaza Bldg.C, Room 632
Las Vegas, NV 89119
(702) 798-2447
US Radon Testing Service
820 S. 24th Street
Arlington, VA 222O2
(703) 684-4528
United Services Alliance Inc.
4900 Lassburg Pike
Suite 21O
Alexandria, VA 22302
(703) 846-1324
Univ. of Colorado-Colorado Springs
Dept. of Physics
P. 0. Box 715O
Colorado Springs. CO 80933-7150
(3O3) 593-3214
Univ. of Pittsburgh Radon Project
Physics Deptartment
Pittsburgh, PA 1626O
(412) 624-9246
9 Univ. of TX School of Public Health
P. 0. Box 20186
Houston, TX 77225
(713) 792-4431
University Home Health Services Inc
67O Centre Street, Suite 9
Jamaica Plain, MA O2130
(617) 524-2149 (617) 522-2793
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# Non-comnercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
-------
TABLE 1
PROFICIENT MEASUREMENT COMPANIES SERVING RHODE ISLAND
Company
University of Lowell
1 University Avenue
Lowell, MA O18S4
(617) 453-1O45
University of New Mexico
Department of Geology
Albuquerque, NM 87131
(005) 277-2310 (505) 277-4204
Up-Country Homo Inspectors Ine
P. 0. Box 1568
Scarborough, ME O4O74
(207) 683-9876
Valley Home Inspections Inc.
P. 0. Don 1G77
Chandler, AZ 65244-1677
(602) 988-1375
Voritoch
47 Carey Avtt.
Butlor, NJ 074O5
(201) 492-8744
Virginia Radon Service, Inc.
Box 332 B Route 1
RoseIand, VA 22967
(604) 277-5491
W. S. Fleming and Associates
631O Fly Road
E. Syracuse, NY 13057
(315) 437-1869
Measurement Methods
CC
Company
AT
CC.CR.EP
CC
CC
CC
AT.CC.CR.CR
Water Test Corporation
33 South Commercial Street
Manchester, NH O3101
(6O3) 623-7400
Western Environmental, Inc.
432O-B Northpark Drive
Colorado Springs, CO 80907
(719) 628-6132
9 Wi Ikes College
Physics Dept.
Wilkes-Barre, PA 16766
(717) 824-4651 ext 4822
Wright Lab Services, Inc.
34 Dogwood Lane
Middletown, PA 17O57
(717) 944-5541
Measurement Methods
CC
CC
AT.CC.CR.CW.CR
CC
More detailed information on the measurement companies' services and past performances is available upon request from your
State Radiation Representative's Office.
0 Non-commercial laboratory for research purposes or State agencies' assistance only.
Note: Underscored methods indicate a primary company capable of performing measurement analyses in-house or making measurements
using operators employed by and instruments belonging to the company.
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APPENDIX
Radon instrumentation
Comparisons Between Radon Concentrations and Radon Decay Product Concentrations
Radon measurements are reported In two ways. One is to report the concentration
of the radon gas Itself. The unit Is plcocurles per leter (pCi/L). The other
Is to report In units that represent the energy released by the chain of
products produced Rhen radon gas rad loactIvely decays. This unit Is the working
level (HL). Devices most used by residents usually read In plcocurles per liter
while the unit most directly related to dose and health effects Is the working
level. The U.S. Environmental Protection Agency recommends corrective actions
be begun when radon decay product levels are 0.02 WL or more. This is
approximately equivalent to A pCI/L.
Alpha-Track Detector (AT)
An alpha-track detector consists of a snail piece of plastic enclosed in a
filter-covered container. These are passive devices requiring no electrical
power. Some alpha-track containers look like large pill boxes, others like
clear plastic drinking glasses. Alpha particles emitted by the radon decay
products In air strike the plastic and produce submlcroscoplc damage tracks. At
the end of the measurement period (often about one month), the detectors are
returned to a laboratory where the plastic Is placed In a caustic solution that
enlarges the damage tracks so they can be counted using a microscope or an
automated counting system. The number of tracks per unit area Is converted to
an average radon gas concentration In air for the measurement period.
Activated Charcoal Adsorption (CC)
Charcoal adsorption detectors are devices filled with activated charcoal onto
which radon In air will adhere. Some are circular cans 2-4 Inches in
diameter, about 1 Inch deep, and fitted with a screen to both keep In the
charcoal and let In room air. Other charcoal detectors look like large tobacco
pouches Into which room air can diffuse. Radon In air will be adsorbed onto the
charcoal over the sampling period of 2 - 7 days and will subsequently decay.
depositing decay products In the charcoal. When returned to the laboratory,
radon decay product emissions from the charcoal are measured with sensitive
gamma-ray detector, data Is corrected for moisture In the charcoal, and the
results reported as an average radon gas concentration In air for the
measurement period.
Continuous Radon Monitor (CR)
A Continuous Radon Monitor consists of three parts (1) a pump. (2) a filter that
removes dust and radon decay products and (3) a scintillation cell. Tne pump
draws room air through the filter and Into the scintillation cell. V.hen radon
in the cell rad loactIvely decays, its decay products strike the zinc sulphide
coated walls and produce tiny light flashes. The number of light flashes is
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measured electronically and is proportional to the radon in air concentration
A continuous radon monitor requires electrical power It can be used to look at
changes In radon concentrations over periods of minutes to hours to days
Grab Radon (GR)
Radon grab sanples are very quick determinations of the radon In air
concentration taken with scintillation cells. These cells have a clear surface
at one end and are coated with zinc sulphide on the remaining Inner surfaces.
To take a neasurenent. the cell Is evacuated, taken to the sampling location,
opened allowing room air to rush In, and then sealed to trap the radon inside
In a laboratory, tiny light flashes produced by radon decay products striking
the Inner zinc sulphide coated surface are electronically detected through the
clear window In one end of the cell. The number of light flashes Is
proportional to the radon In air concentration. Radon grab samples measure the
radon concentration at the Instant the sample was taken and nay not be
representative of average conditions to which people are exposed.
Grab Working Level (GH)
Grab working level measurements are quick determinations of radon decay product
concentration. Samples are taken by drawing a known volume of air through a
filter with a pump and collecting the radon decay products on the filter.
Sampling periods are short, usually five minutes. Filters are counted for alpha
particle emissions during mathematically determined periods after the sample is
collected. A single count method Is known as the Kusnetz Method and a three
count method Is known as the Tslvoglou Method. Radon decay product grab samples
measure the average radon decay product concentration In a short collection
period and may not be representative of average conditions to which people are
exposed.
RPISU - Radon Progeny Integrating Sampling Unit (RP)
The RPISU contains an air sampling pump that draws a continuous flow of air
through a detector assembly. The detector assembly Includes a filter and at
least two theroolum Inescent dosimeters (TLOs). One TLD measures the radiation
emitted from radon decay products collected on the filter and the other TLD is
used for a background gamma-ray correction. The pump and detector assembly are
operated for 2 - 7 days continuously. TLDs must be read with a special reader
In a laboratory. Results are reported as radon decay product concentrations.
Continuous Working Level Monitor (Cw)
A Continuous working level monitor draws room air through a filter at low flow
rates. As radon decay products collect on the filter an alpha particle detector
counts emissions from the filter. Data Is electronically processed and can give
successive radon decay product concentrations over desired Intervals from
tilnutes to hours.
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E-PERM - Electret Passive Environmental Radon Monitor (EP)
E-PERMs ire passive devices reauiring no power to function They are
Integrating detectors and can be used to determine the average radon
concentration In the room where the device Is located during the measurement
perlod.
E-PERMs are fabricated from steel canisters of two sizes: a SOOcc PERM for
short-tern measurements of 2 to 14 days duration, and a SOcc PERM for long-term
measurements of froo three to twelve months. These E-PERMs function as
lonlzatlon chambers. I.e.. they contain a permanently charged electret which
collects Ions formed In the chamber by radiations from radon and radon decay
products. When the device Is exposed to radon, these Ions are generated
continuously by the radon decay and move to the surface of the electret reduce
Its surface voltage. The amount of voltage reduction Is directly related to the
average radon concentration present during the exposure period.
The electret assembly, In both short and long-term E-PERMs, Is suspended from
the lid of the canister facing downward. The bottom of the canister contains a
filtered hole to permit radon entry. (The filter Is positioned on top during
the exposure.) The electret assembly Is covered with a protective cap during
storage and shipment. When this cap Is In place the E-PERM Is "off because no
Ions can reach the electret. The user oust remove this protective cap when
he/she wishes to start monitoring radon and replace It again when the exposure
period Is over.
When the E-PERMs are returned to the laboratory, the electret Is removed and the
surface voltage Is re-neasured. This final voltage value Is subtracted from the
Initial value taken before exposure and the difference Is divided by a
calibration factor to determine the average radon concentration value during the
short-term exposure.
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