United States         Office of           EPA 520/1 -87-01 5
                Environmental Protection     Radiation Programs       July 1987
                Agency           Washington, D.C. 20460
                                            . ,      „___
                                          jfeyiaed Sepbaiter, 1987
                Radiation
«EPA          Radon/Radon Progeny
                 Measurement Proficiency
                 Program
                 Cumulative Proficiency Report
                 (This publication valid through September 1988}

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                                 ERRATA SHEET
                  Radon/Radon Progeny Measurement Proficiency
                     (RMP) Program Proficiency Reports for
                                    Round 4
For the Cumulative Proficiency Report (CPR), changes are as follows:

     •   Table 1,  page  7,  "National"  listing;  next  to  Affiliated Building
         Inspectors, Inc., add CC method.

     •   Table 1, page 8,    "National"  listing;  add Rosentiel Research Center
         with CC method.

     •   Table 1, page  9,  "Colorado"  listing;  add  M.V.E.,  Inc. with AT, CC
         methods.

     •   Table  2,  page   38;   under   listing   for   Radon  &  Environmental
         Professionals, change the first  listed  telephone number to  (913) 749-
         7420.

     •   Table 2, page 43;  under  listing  for  Rogers & Associates Engineering
         Corporation, change indicator for  11/86 Round, CC method to LI.
          V                                    '
     •   Table 2, page 43; add  listing  for Rosentiel Research Center; Brandeis
         University; 415 South Street; Waltham,  MA   02154; Dr. Daniel Perlman,
         (617) 736-2461; with LJl indicator  under CC method for 5/87 Round.

     •   Table  2,  page   43;  under  listing  for  Ross  Systems,  Inc., change
         telephone  number  to  (201) 362-5571.
For all State  Proficiency Reports  (PR's), changes are as  follows:

     •   Table 1; next to listing   for Affiliated Building  Inspectors,  Inc., add
         CC method.

     •   Table 1; under  listing for Radon Alert Detection Center,  change address
         to:   Post Office Box  323,  Flourtown, PA  1°031.

     •   Table 1; next to listing  for Radonics, Inc. add  AT method.

     •   Table  1;   add  listing   for:    +Rosentiel  Research  Center; Brandeis
         University; 415 South Street; Waltham,  MA  02154;  (617)  736-2461, with
         CC method.

     •   Table 1; under  listing for Ross Systems, Inc.,  change telephone  number
         to  (201) 362-5571.

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For Colorado Proficiency Report, changes are as follows:

         Table 1: add listing for:   M.V.E., Inc.; 1911 Leiaray Street; Colorado
         Springs", CO  80809; (303) 635-5736, with AT and CC methods.
For Kansas, Missouri, Nebraska, and Oklahoma Proficiency Reports (PR's), changes
are as follows:

     •   Table 1;  under  listing  for  Radon  and  Environmental Professionals,
         change first listed telephone number to:  (913) 749-7420.

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          CUMULATIVE PROFICIENCY REPORT

(This publication is valid through February 1988)




                EPA Test Round 4



                   Prepared by

           Research Triangle Institute
       Radon Technical Information Service
        Research Triangle Park, NC  27709
                Prepared for the

          Office of Radiation Programs
      U.S. Environmental Protection Agency
              Washington, DC  20460
          EPA Contract No.:  68-01-7350
                    July  1987

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                      TABLE OF CONTENTS



                                                  Page

t ntroduct i on —	    1

Selection of Measurement Method	    ?

Program Requirements....	    5

Explanation of Acronyms....	    5

Table 1:  Areas Serviced by Measurement
          Coinpan i es	    7
Table 2:  Performance Results of Companies	   24
                               141

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                INTRODUCTION
     Recent public concern over the health
effects from exposure to radon  has greatly
increased the demand for companies qualified to
measure radon and radon progeny In Indoor air.
In response to States' requests for assistance,
the U.S. Environmental Protection Agency's
Office of Radiation Programs has developed the
Radon/Radon Progeny Measurement Proficiency
(RMP) Program.  Under this program, any company
offering measurement services — directly, or
Indirectly through another company --  Is  Invit-
ed to demonstrate  its proficiency  in measuring
radon gas and radon progeny  levels.
     The program's  Immediate oblectlve Is to
assist  States and  the public  In selecting com-
panies  that have demonstrated  competence  in
measuring  Indoor radon  and  radon orogeny. This
 is achieved by  evaluating,  on  a semiannual
basis,  the  proficiency  of  companies'  detector
operations   and the quality of their  data man-
agement.   The companies that demonstrate their
proficiency are listed  In the  RMP  proficiency
 reports.   The program's long-term  objectives
 are  to promote standard measurement procedures
 among measurement companies and to establish
 quality assurance procedures for  all  measure-
 ment companies.
      ThP RMP Program Is nnt designed  for ac-
 crediting measurement companies.—HOT JOS? It
 certify, recommend, nr endnrse 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 progeny levels.
     The testing periods are referred to as
test "rounds".  Each round consists of two
tests <•- a performance test and a follow-up
test.  A company enrolls Its measurement
method(s) (e.g., activated charcoal adsorption)
for evaluation.  EPA tells the company to sub-
mit a specific number and type of detectors
(e.g., five charcoal canisters) for exposure to
known levels of radon and radon progeny.  After
exposure  in a federal radon chamber, EPA re-
turns the detectors to the company without
revealing the radon gas or .radon progeny lev-
els.  The company analyzes the detector(s) and
reports  its measurement results to EPA.  EPA
compares  the  measurement results with the known
 levels of exposure.   If a company falls any. of
the program requirements  in the performance
test,  It  must retest  in the follow-up test.
The same  detector submittal and exposure proce-
dures are followed  for  the  follow-up test.
Companies that fail  this  second  attempt may
participate  in the  next test  round.
      Only companies having met all  the  program
 requirements  for a  method In  either  the per-
 formance or  the follow-up test are listed in
 this Cumulative Proficiency Report.   The  com-
 panies that  meet all  the  program requirements
 in the initial performance test are listed with"
 an "LI" Indicator under the appropriate meth-
 od(s).   Companies that meet all  the require-
 ments In the follow-up test are listed with an
 "LA" indicator under the appropriate method(s).
 A company's method that fails after having been
 listed in a.previous round's report Is omitted
 entirely from this report and will not be rein-
 stated until  Its next successful  performance In
 a round.  When the method passes again, its
 performance  Indicators for the previous three

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 rounds  as  well  as  for  the present round will  be
 listed.  Upon  reinstatement,  the round during'
 which the  method had failed will be narked with
 an  "NL"  Indicator,  signifying its omission from
 that round's report.
     Table 1  lists  all  the proficient companies
 serving  each State.  Numerous companies distri-
 bute mall-In detectors  and make  measurements
 nationwide.  The companies offering nationwide
 service  are under the  "Nationwide"  heading, and
 precede  the Individual  State  headings.
     Table 2  lists  the  companies'^ performance
 Indicators for  each  round over a two-year  peri-
 od.  In  addition,  it Indicates  If they  are
 "prlaary"  or "secondary"  companies,  and shows
 whether  they have submitted acceptable  quality
 assurance  (QA)  plans.
     A prlaary  company  either owns  analysis
 capabilities or makes all  measurements  and
 analyses with  Its own  Instrumentation and  oper-
 ators.   This type of company  may or  may not
 offer aeasurement services directly  to  the
 public.  A secondary company's services may    •
 range froa detector distribution to  home In-
 spection and consultation.  This type of com-
 pany aust  use one of the  primary companies for
 its analyses.   In a case  where a company offers
 primary  services for one  method  but  not anoth-
 er, the  perfornance  indicators In Table 2  are
 underscored to  mark the method(s) for which It
 Is a prlaary company.   EPA has asked, but  has
 not required,  that participating companies
 subs It for review a copy  of their QA plans.   An
X under the column headed  "QA Plan"  in  Table  2
 Indicates  that  the company  has submitted a plan
 that compiles with the QA  criteria recommended
by this program.
        SELECTION  OF  MEASUREMENT METHOD
      Several  different  measurement  methods  may
 be  used to  determine the  radon  or radon  progeny
 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  seven 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  certainties.   However,
 it  does mean  that the listed methods  are capa-
 ble of  producing  adequate results for screening
 or  follow-up  purposes.
      Each method  has  Its own advantages  and
 disadvantages.  Users must decide which  method
 is  best suited to their situations.   The fol-
 lowing  sections detail  the characteristics  of
 the seven 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 (CR) and
 Continuous Working-Level Monitoring (CW)  -

     These measurement methods are similar in
                                      "; ,;rt ) fr/p^jvy
that they use an electronic detector to accumu-
late and store information related to the perl-
            '      :  '  .si.j  X'ift* v,i jnsftfisnaq  JsrtJ
odlc (usually hourly) average concentrations of
   -"  " • '     .  >••,-••  , :'  ~, -r  ... .», ;• • «,|
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guidelines  fn  the EPA protocol,  and then turned
on,  or  programmed for, the desired operating
time — a minimum of  six hours for screening
and  twenty-four hours for follow-up measure-
ments."  "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  CW).

      Disadvantages
      •  Relatively expensive, cost  nay range
         froi $100 to  $300, depending on the
         type of  services  provided.
      •  Requires a skilled Instrument  operator.
      •  this,  as does any  short-term measure-
         aent,  requires  careful  control of
      ,;.. closed-house  conditions twelve hours
          before and during the test.
      •   Because of the highly reactive nature
          of  radon progeny,  the continuous
       ,,^working-1eve I measurements are much
          more  susceptible to  sampling  error than
          radon gas measurements.

  Aloha-Track Detection (AT)
      The alpha-track method measures radon.  An
  AT  detector Is a small sheet of special plastic
  material enclosed in a filtered container.  The
  container  collects the radon progeny  on the
  filter paper while the radon gas enters the
  container.  As  the gas and some of the short-
  lived progeny decay, they emit alpha  particles
  ••<•• '..  •••/,•:  oj ':•   ..•!••    .   •   ' •••• ••     •  '  •• •
  that permanently mark the plastic  sheet.-,.
  •Jo gfioIj-siJnsonoo sgeisv? (v; •;..,•;,.
       The detectors are  Installed  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 follow-up
measurements.  At the end of the desired test-
ing period,^ they must be returned to the dis-
tributor- or analytical  laboratory for process-
ing and evaluation.                  ,      ,

     Advantages                         ,  .
     •  Relatively  low-cost  services; cost may
        range from  $20  to $60.
     •  No special  skills required for  making
       the measurement.
     •  Can  be distributed  by  maiI.
     •  Completely  passive,  needs  no  external
        power.                            ,
     •  Can  measure the long-term  average  con-
        centratlons over a  twelve-month period,
        which  is the optimal measurement of
         long-term concentrations.

     Disadvantages
     •  Relatively long measurement  period
        necessary;  three months Is the recom-
        mended minimum for  currently available
        detectors.

 Activated Charcoal  Adsorption (CO
      The  charcoal adsorption method measures
 radon gas.  The detectors for this method
 consist of variously configured containers
 filled with a measured amount of activated
 charcoal.  The container Is often perforated or
 screened to keep the charcoal from fall ing-out,
 and to filter out  radon progeny.  All  charcoal
 adsorbers are stored  In airtight containers
 when not being  used for sampling.
     ,Charcoal adsorbers can be received through
 the mail from a  distributor.  They are .
 installed,in the home  for  up  to seven  days
 according, to guidelines  in  the EPA protocols.

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At the end of  testing,  an  adsorber  Is  reseated
and returned to the  distributor  or  analytical
laboratory for processing  and  evaluation.

     Advantages
     •  Low cost  for services; costs may range
      •  froH $10  to  $25.
     •  Can be distributed by  mall.
     •  No special skills  needed for making  the
        ieasurement.
     •  Coapletely passive, needs no external
        power.
     •  With proper  analysis,  can yield precise
        results.

     Disadvantages
     •  Scne charcoal adsorbers  are more sensi-
        tive than others to temperature and
        hunidity.
     •  United 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.

Radon Prooenv  Integrating  Sampling Unlt-RPISU
 (RP)
     The RP method measures radon progeny.  RP
detectors have a flow-rate air pump that pulls
air continuously through a detector assembly.
Depending on the node I, the unit can be in-
stalled and operated by homeowners or  skilled
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.
     Advantages
     •  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 RPISU's; therefore, measurement
        errors are well established.
     Disadvantages
     •  Relatively expensive; cost may range
        from $40 to $150, depending on type of
        service provided.
     •  May be  limited to locations with AC
        power.
     •  Some units may 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 Radon (GR> and Grab Radon Progenv(GH)
     The grab sampling methods measure concen-
trations of radon gas or radon progeny concen-
trations.  The radon grab sample is collected
in as special flask holding 100 to 2,000 cubic
centimeters of air.  The radon progeny grab
sample is collected by drawing air through a
filter, upon which progeny, if present in the
air, are collected.  Both samples can be ac-
quired simultaneously with some detector sys-
tems.  All sampling should be done in accor-
                   s
dance with guidelines in the EPA protocols.
     For results of the grab radon test, opera-
tors must return to their offices to analyze
the exposed detectors, and must delay the anal-
ysis for at least four.hours after the testing.

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For most grab work Ing-1 eve I  tests (radon proge-
ny),  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 gas and radon progeny
        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  measurement periods may not
         be representative of  the long-term
         average concentrations.
      •   Requires a skilled operator.
      •   Requires, as does  any short-term meas-
         urement,   careful  control  of  closed-
         house conditions twelve hours before
         and during the test.
      •  Because of  the  highly-reactive nature
         of radon  progeny,   grab  radon progeny
         measurements are  much more susceptible
         to sampling error than radon gas
         measurements.

              PROGRAM REQUIREMENTS
      For  each  method,   participants   must  send
 with their  applications  a copy  of the  operating
  instructions they   provide     homeowners and/or
  those'.used  by an   instrument  operator.   These
  instrtftjt-i'oiis  must   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 Follow-up  Radon  and Radon Decay
product Measurements".   They  must be accepted
by, and on file  with,  EPA  by  the end of the
follow-up test.
     Once enrolled, a  company  must meet EPA's
minimum screening-measurement  requirements for
each method.  A  company must meet all detector
and analysis  result deadlines  as  listed on the
program schedule.  Applications, detectors, and
analyses  reporting   forms    received  after,   a
scheduled deadline  will  not  be  considered  in
the performance  evaluation  process.    A com-
pany's detector(s) must  be  tested  every  round
to maintain its  proficiency listing.

            EXPLANATION OF ACRONYMS
Methods                                 Unit?
AT -  Alpha-track Detection             (pCi/l)
CC -  Activated Charcoal  Adsorption     (pCI/l)
CR -  Continuous Radon Monitoring       (pCi/l)
CW -  Continuous Working-Level
      Monitoring                           (WL)
 GR -  Grab Radon Sampling               (pCl/l)
 GH -  Grab Working-Level  Sampling          (WL)
 RP -  Radon Progeny Integrated
      Sampllng/RPlSU                   -    (WL)

 Measurement Units
 pCi/l - Picocurles per  liter air, radon gas
         measurement units.
 WL    - Work ing-1 eve I, radon progeny
         measurement units.

 HAfIn it Ion of Performance  Indicators  .
 L1 -  Signifies  a company's ability to meet all
       program requirements  with the given meas-
       urement method  in  the performance  test.
 LA -  Signifies  a company's ability to pass all
       program requirements  with the given method
       only  after the  follow-up test.

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NL - Signifies a method's omission from the CPR
     because of unsuccessful participation.
     This Indicator is only used when a method
     has passed a round, then failed, resulting
     In Its performance record being omitted
     froa a previous report, and has now passed
     again.   "NL" Is used In the method's
     reinstated performance record.
Others

QA - Quality Assurance.
DT - Detector(s) damaged or lost through no
     fault of the participant.

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                                                            TABLE 1
                                             MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company          .          Measurement Methods
                                          Company
                                                                                                           Measurement Methods
NATIONAL

  ABE Radiation Measurements Lab
  ARIX Sciences, Inc.
  Accu-Test
  Accurate Air Testing
  Advanced Radiation Monitoring Serv.
  Affiliated Building Inspectors,  Inc
  Air Chek, Inc.
  Air Sciences, Inc/Overman Assoc.
  Air-N-Sol Corporation
  Alpha Control, Inc.
  Alpha Spectra
  Amersham Corporation
  Appalachian Envir. Testing Inc
  Applied Energy Company
  Applied Health Physics Inc.
  Applied Radon Test. & Reduct'n
  Barcon, Inc.
  Barringer Laboratories, Inc.
  Battelle
  Bowling Green Radon Laboratory
  CDS Technologies, Inc.
  CMT Inc.
  Camp Dresser & McKee Inc.
  Camroden Associates
  Canberra Industries Inc.
  Capital Materials Testing Inc.
  Centarus Corporation
+ Chemical Engineering Unit, RTI
  Clean Air Engineering, Inc.
  Con-Test, Inc.
  Core Laboratories Inc
  EKS RadTech
  ENV Services, Inc.
  EberIi ne Instrument Corp.
  Electro Mechanical Concepts
  EnRad, Inc./Rad. T. & Eng. Inc
  Envirohazards Management, Inc.
CC
GR.OW
AT.CC
CC
CC.
AT
CC
CC
GR,GW,CW
AT,CC
CC
AT.CC
AT
CC
AT,CC,CR,GR,GW,CW
CC
AT,CC
CC
AT,CC,CR
CC
AT,CC
CC
CC,CR,GR,GW,CW
AT,CC,CR,GR
CC
CC
CC
CR
CC
GW
GR
CC
GW
CR
CC
AT,CC
CC
  Environ. Detection Associates
  Environmental Chemistry
  Enviroserv
  Env i rotest
  Futura Medical Systems, Inc.
  GEOMET Technologies, Inc.
  Garden St. Home Inspection Svc
  General Health Physics Inc.
  Health Physics Associates, Inc.
  Health Physics Associates, Ltd.
  Health and Safety Associates
  Home Inspection Service, Inc.
  Home Sentry Inc.
  Home Testing Service
  Hudson Valley Radon Testing Corp.
  Infiltec
  Inspex of Boulder, Inc.
  JRW Industries, Inc.
  K & J Solar Service
  KSE,  Inc.
  Key Technology, Inc.
  Lapteff Associates
•f MIT/MIT Radon Project
t- Maine Public Health Laboratory
  NODAR, Inc.
  National Radon Control, Inc.
  Niton Corporation
  Northeast Radon Testing Svc., Inc.
  Northeastern PA Envir. CounciI
  Nuclear Sources ft Services Inc.
  Nucleon Lectern Associates, Inc.
  0. K. Rems Corp.
+ Oak Ridge Assoc. Universities
  Phoenix Labs
  Princeton Testing Laboratory
  Pylon Electronic Development
  Pyramid Environmental Systems, Inc.
  R.A.D. Service & Instruments Ltd.
  RAD Environmental Services
  RAF Engineering
CC
CC
CC
CC
CC
AT,CC
CC
CC
CC
CC
AT,CC
CC
CC
CC
CC
CC,GR
CC
CC
CC
CC
CC
CC
CC,GR
CC
GW
RP
CC,GR
CC
CC
CC
AT,CC,GR,CW  ,:  !
CC
CC
CC
AT,CC        ••;
GW,CW
CW     ......
RP             ;   ,
AT,CC,CR,GR,GW,CW
AT.CC
     *  For  addresses, phone numbers, and performance records see Table 2.
     +  Non-cotrmercia! laboratory for research purposes or State agencies' assistance only.

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                                                                         TABLE 1
                                                          MEASUREMENT COMPANIES BY SERVICE AREAS
                   * Company
                                    Measurement Methods
oc
  RISE
  Rad-Elec, Inc.
  Radiation Data
  Radiation Protection Services
  Radiation Safety Engineering
  Radiation Safety Services, Inc.
  Radiation Service Organization
  Radon Alert Detection Center
  Radon Ana lists, Inc.
  Radon Analysis Incorporated
  Radon Consultants, Inc., VA
  Radon Detection Services, Inc.,-GA
  Radon Detection Services, Inc., MD
  Radon Detection Services, Inc., NJ
  Radon Detection Services, Inc., PA
  Radon Detection Systems, CO
  Radon Detection and Control
  Radon Engineering Services Inc
  Radon Engr,  a Unit of PSI Engr, Inc
  Radon Environ.  Monitoring,  Inc
  Radon Measurement and Services
  Radon Measurements Inc.
  Radon Project,  The
  Radon Research  Group
  Radon Safety Services, Inc.
  Radon Surveys,  Div.  Cope Tech  Svcs
  Radon Testing Corp.  of America  RTCA
  Radon Testing Svc, Pittsburgh,  PA
  Radon  Testing Svcs,  Baltimore,  MD
  Radonics, Inc.
  Radonix
  Real Estate  Support Services
'  Recon  Systems,  Inc.
'  Rogers & Assoc. Engineering Corp.
  Ross Systems, Inc.
  Roy F. Weston,  Inc.
  Ryan Nuclear Laboratories
 Scientific Testing Associates
 SepTech
 Southern Radon Services,  Inc.
 CC
 AT,CC
 CC
 CC
 CC
 AT.GW
 CC
 AT,CC
 CC
 CC
 AT.CC
 AT,CC
 AT,CC,GR,GW,CW
 AT,CC
 AT,CC,GW,CW
 AT,CC,GW
 CC
 CC
 AT,CC
 AT
 AT,CC,GR,GW
 AT,CC
 CC
 AT
 CC,RP
 CC
 CC
 CC
 CC
 AT,CC
 CC
 CC
 AT.CC
 AT,CC,GR
 AT,CC
 GR,GW
 CC
CC
CC,GR
CC,CW
                                                                                          * Company
                                                                                                           Measurement Methods
   Standor Radon Detection             AT,CC
   TCS Industries, Inc.                CC
   TEQ Corporation                     AT,CC,CR,CW
   TMA/Eberline, Health Physics        CC,GR
   Teledyne Isotopes                   CC
   Terradex Corporation                AT
   Testing 1. 2. 3                     AT,CC
 + US Army Envir. Hygiene Agency       CC
 ••• US E.P.A., Las Vegas, NV            GR
   US Radon Testing Service            CC
   Univ of Texas School of Pub. Health CC
   Univ.  of Pittsburgh Radon Project   AT,CC
 •f University of Lowell                CC
   Virginia Radon Service, Inc.        CC
   W. S.  Fleming and Associates        AT,CC,CR,GR,CW
 * Wi Ikes College                      AT,CC,CR,GR,CW
   Wright Lab Services, Inc.           CC

 ALABAMA

   Advanced Materials Enterprises, Inc CC
   Cavin  Analytical  Consultants        CC,GR,GW
   Chem-Safe Inc.                       CC
   Energy Systems, Inc                 AT,CC,CR,GR
   Environmental Radon Measurements    AT
   Enviroserv-Radon Detect,  of  AL     ' CC
   Scientific Analysis,  Inc.            CC
   Sorensen Enterprises, Inc.           CC

ALASKA

   Cavin  Analytical Consultants        CC,GR,GW
   Chem-Safe Inc.                       CC
   Columbia Radiological Test Lab       AT
   Madrona Divirsified, Inc.            CC
   Radon Testing Svc, Englewood, CO     CC,GW
  West Coast Environmental Services    CC

ARIZONA
               * For addresses, phone numbers,  and performance records  see Table 2.
               + Non-commercial laboratory for  research  purposes or State agencies' assistance only.

-------
                                                             TABLE 1
                                              MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company,
Measurement Methods
* Company
                                                                                                           Measurement Methods
  AAAirscan Engineering Corp.         AT,CC
  Cavin Analytical  Consultants        CC,GR,GW
  Chem-Safe Inc.               .-  .    CC
  Environmental  Engineering ft Testing CC
  Hazen Research, Inc.                CC
  Integral Resources, Inc.         •   AT
  Madrona Divirsified, Inc.           CC
  Radon Measurement and Control       AT
  Radon Screening Service, Inc.       AT,CC
  Radon Testing Svc, Englewood, CO    CC,GW
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC
  West Coast Environmental Services   CC

ARKANSAS

  ACI Chemical Co.  In. d/b/a ACI Insu CC
  Cavin Analytical  Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC

CALIFORNIA

  AAAirscan Engineering Corp.         AT,CC
  ABMS, Inc.                          GW
+ CA State Dept. of Health Serv.      CC,GR
  Chem-Safe Inc.                      CC
  Environmental  Engineering ft Testing CC
  Faytek Incorporated                 AT,CC
  Hazen Research, Inc.                CC
  Integral Resources, Inc.            AT
  Madrona Divirsified, Inc.           CC
  Radon Testing Svc, Englewood, CO    CC,GW
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC
  West Coast Environmental Services   CC

COLORADO
                                     AAAirscan Engineering Corp.         AT,CC
                                     Alpha Radon Screening ft Home        CC
                                     Cavin Analytical Consultants        CC,GR,GW
                                     Chem-Safe Inc.                      CC
                                     Colorado Radon Engineering Inc      CC
                                     Environmental Engineering ft Testing CC
                                     Ero Resources Corporation           CC
                                     Faytek Incorporated                 AT,CC
                                     Geo-Chek, Inc.                      CC.CW
                                     Hazen Research, Inc.                CC
                                     Madrona Divirsified, Inc.           CC
                                     Natural Resource Technologies       CC
                                     Radon Consultants, CO               AT,CC
                                     Radon Env. Test Experts, Inc.-       CC
                                     Radon Measurement ft Control         CC
                                     Radon Measurement and Control       AT
                                     Radon Screening Service, Inc.       AT,CC
                                     Radon TNT                           CC,GW
                                     Radon Testing Svc, Englewood, CO    CC,GW
                                     Rocky Mountain Radon Testing        CC
                                     Scientific Analysis, Inc.           CC
                                     Sorensen Enterprises, Inc.          CC
                                     Timber line Radon Service            CW
                                     Univ. of Colorado-Colorado Springs  CC
                                     West Coast Environmental Services   CC

                                   CONNECTICUT

                                     A-l Sherlock Home Inspectors        CW
                                     AAAirscan Engineering Corp.         AT,CC
                                     AIDCO Maine Corp                    CC
                                     Biomedical Toxicology Assoc.        CC
                                     Boxford Radon Lab  (B.R.L.)         CC
                                     CDS Technologies, Inc.              CW
                                     Cavin Analytical Consultants        CC,GR,GW
                                     Commonwealth Eng. ft Technology    • CC
                                     Continental Environment Company     AT,CC
                                     Ecological Interactions, Inc.       AT,CC
                                     Environmental Control Technologies  CW
                                     Environmental Radioactivity Measure CR,GR
    * For addresses, phone numbers,  and performance records see Table  2.
    + Non-commercial laboratory for  research purposes or State agencies'  assistance only.

-------
                                                              TABLE 1
                                               MEASUREMENT COMPANIES BY SERVICE AREAS
        *  Company
Measurement Methods
                                                                               *  Company
                                                                       Measurement Methods
   Environmental Sys. Service Ltd
   Environmental Systems Service
   Enviroserv
   Faytek  Incorporated
   FederaI NucIi de Mon i tors
   Gesell  Institute, The
   MRC Home Inspections
   Microbac Labs, Erie Testing Lab Div
   Microbac Labs, Hanover, PA
   Microbac Labs, MA Testing Division
   Microbac Labs, New Castle, PA
   Microbac Labs, Pittsburgh, PA
   Microbac Labs, Schiller Div.
   Microbac Labs, Seaway Div
   New England Radon, LTD.
   Protect-A-Home
   Radiation Safety Associates, Inc.
   Radon Detection Services, Inc., NJ
   Radon Detection, Inc.
   Radon Engr, a Unit of PSI Engr, Inc
   Radon Inspection Service
   Radon Management Laboratories
   Radon Safety Services, Inc.
   Radon Technologies Inc.
   Radonics, Inc.
   Res-I-Tec
   Residential Radon Test Service
  Ross Systems, Inc.
  Scientific Analysis,  Inc.
  Shotwell Associates
  Sorensen Enterprises,  Inc.

DELAWARE

  AAAirscan Engineering Corp.
  ABE Radiation Measurements Lab
  AIDCO Maine Corp
  Alpha-Ban
  Biomedical  Toxicology  Assoc.
  CDS Technologies,  Inc.
 AT,CC
 GR,GW,CW
 CC
 AT,CC
 CC
 CW
   Cavin  Analytics!  Consultants        CC,GR,GW
   Commonwealth  Eng. t Technology       CC
   Ecological  Interactions,  Inc.        AT,CC
   Environmental Sys.  Service Ltd       CC
   Environmental Systems Service        CC
   Env i roserv                           CW
   Health Physics Associates, Inc.      GR,GW,CW
   Microbac Labs, Erie Testing  Lab Div  CC
   Microbac Labs, Hanover, PA           CC
   Microbac Labs, MA Testing Division   CC
   Microbac Labs, New  Castle, PA        CC
   Microbac Labs, Pittsburgh, PA        CC
   Microbac Labs, Schiller Div.         CC
   Microbac Labs, Seaway Div            CC
   R.J. Moore & Associates,  Inc.        AT,CC
   Radon  Testing Svcs,  Princeton, NJ    CC
   Radonics, Inc.                       GW,CW
   Safe Shelter Environmental           CW
   Scientific Analysis, Inc.            CC
   ShotwelI Associates                  GW,CW
   Sorensen Enterprises, Inc.           CC
   U.S. Toxic Substance Testing Bureau  CW

DISTRICT OF COLUMBIA

  AAAirscan Engineering Corp.          AT,CC
  ABE Radiation Measurements Lab      GR,GW,CW
  AIDCO Maine Corp                    CC
  Abionics,  Ltd.                      AT,CC
  Alpha Control, Inc.                  GW
  Alpha-Ban                           AT,CC
  Appalachian Envir. Testing Inc      CW
  Biomedical  Toxicology Assoc.         CC
  Cavin Analytical  Consultants         CC,GR,GW
  Commonwealth Eng.  ft Technology      CC
  Continental  Environment Company      AT,CC
  Environmental  Sys.  Service Ltd      CC
  Environmental  Systems Service       CC
  Enviroserv                           CW
  Federal NucIide Monitors            CC
    * For addresses, phone numbers,  and performance records see Table 2.
    + Non-commercial laboratory for  research purposes or State agencies'  assistance only.

-------
                                                •  - '•        TABLE 1  .
                                              MEASUREMENT COMPANIES BY SERVICE AREAS
       *•Company
                                    Measurement Methods
       * Company
                                                                                                           Measurement Methods
• : Fores i ght Eng i neer i ng, Inc., VA     CC
  Health Physics Associates, Inc.     GR,GW,CW
;  Home Sure Inspections, Inc.         GR
-• Microbac Labs, Erie Testing Lab Div CC
  Microbac Labs, Hanover, PA          CC
  Microbac Labs, MA Testing Division  CC
  Microbac Labs, New Castle, PA       CC
  Microbac Labs, Pittsburgh, PA       CC
  Microbac Labs, Schiller Div.        CC
.  Microbac Labs, Seaway Div           CC
,  R.J. Moore & Associates, Inc.       AT,CC
  RADON Home Inspection Service       GW
  Radon Engr, a Unit of PSI Engr, Inc CW
  Radon Management Company            CC
  Radonics, Inc.                      GW,CW
  Scientific Analysis, Inc.         ;  CC
  Sorensen Enterprises, Inc.    •.      CC
  Terradynamics Corporation           AT
  West Coast- Environmental Services   CC

FLORIDA
  Microbac Labs, Seaway Div           CC
  Radon Engr, a Unit of PSI Engr, Inc CW
  Radon Mitigators, Inc.    •          CC
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC
  West Coast Environmental Services   CC

GEORGIA

  AAAirscan Engineering Corp.   'i     AT,CC
  AIDCO Maine Corp  •    .              CC
  Advanced Materials Enterprises, Inc CC
  Carolina Radon .Consultants          CC
  Cavin Analytical Consultants        CC,GR,GW
  Commonwealth Eng. ft Technology      CC
  Environmental Radon Measurements    AT
  Environmental Sys. Service Ltd      CC
  Environmental Systems Service       CC
  Enviroserv-Radon Detect, of AL      CC
  Microbac Labs, Erie Testing Lab Div CC
  Microbac Labs, Hanover,  PA          CC
  Microbac Labs, MA Testing Division  CC
AAAirscan Engineering Corp.
AIDCO Maine Corp
Cavin Analytical Consultants
Commonwealth Eng. & Technology
Continental Environment Company
Ecological Interactions, Inc.
Environmental Radon Measurements
Environmental Sys. Service Ltd
Environmental Systems Service
Enviroserv-Radon Detect, of AL
Faytek Incorporated
Federa 1 Nuc 1 i de Moh i tors -
Microbac Labs, Erie Testing Lab Div
Microbac Labs, Hanover, PA
Microbac Labs, MA Testing Division
Microbac Labs, New Castle, PA
Microbac Labs, Pittsburgh, PA
Microbac Labs, Schiller Div.
AT,CC
CC
CC,GR,GW
CC
AT.CC
AT,CC
AT
CC
CC
CC
AT,CC ,
CC
CC
CC
CC
CC
CC
CC
Microbac Labs, New Castle, PA
Microbac Labs, Pittsburgh, PA
Microbac Labs, Schi 1 ler Div.
Microbac Labs, Seaway Div
Radon Measurement & Control
Scientific Analysis, Inc.
Sorensen Enterprises, Inc.

HAWAII

AAAirscan Engineering Corp.
Chem-Safe Inc.

IDAHO

Cavalier Corporation
Chem-Safe Inc.
Faytek Incorporated
CC
CC
CC
CC
CC
CC
CC



AT,CC
CC



CC
CC
AT.CC
      For addresses, phone numbers, and performance records see Table 2.
      Non-commercial laboratory for research purposes or State agencies' assistance only.

-------
                                                              TABLE 1
                                               MEASUREMENT COMPANIES BY SERVICE AREAS
        * Company
Measurement Methods
                                          * Company
                                                                                                            Measurement Methods
   Integral Resources, Inc.            AT
   Madrona Divirsified, Inc.           CC
 + Nuclear Radiation Center            CC
   Radon Screening Service, Inc.       AT,CC
   Radon Testing Svc, Englewood, CO    CC,GW
   Scientific Analysis, Inc.           CC
   Sorensen Enterprises, Inc.          CC

 ILLINOIS

   AIDCO Maine Corp                    CC
   Cavin Analytical Consultants        CC,GR,CW
   Chem-Safe Inc.                      CC
   Columbia Radiological Test Lab      AT
   CommonweaIth Eng.  ft Techno Iogy      CC
   Energy Marketing Midwest, Inc       CC
   Environmental Engineering ft Testing CC
   Environmental Risk Consultants,  Inc CC,GW
   Environmental-'Sys. Service Ltd      CC
   Environmental Systems Service       CC
   Enviroserv-Radon Detect, of  OH      CC
   Home Buyers Inspection Service      CC
   Hoosier Environmental               CC
 •* IL Dspt. of Nuclear Safety          AT,CC,GR,GW,CW
   Microbac Labs, Erie Testing  Lab  Oiv CC
   Microbac Labs, Hanover,  PA          CC
   Microbac Labs, MA Testing Division  CC
   Microbac Labs, New Castle, PA       CC
   Microbac Labs, Pittsburgh, PA       CC
   Microbac Labs, Schiller  Div.         CC
   Microbac Labs, Seaway Div           CC
   Radon Consultants, CO               AT,CC
   Radon Detection Specialists          CC
   Radon Engr,  a Unit of PSI Engr,  Inc CW
   Radon Surveys, Div.  Alpha Tech Corp GW
   Residential  Radon  Measurements      AT,CC
   Scientific  Analysis,  Inc.            CC
   Sorensen Enterprises,  Inc.           CC

"INDIANA
                                     Cavin Analytical Consultants        CC,GR,GW
                                     Chem-Safe Inc.                      CC
                                     Commonwealth Eng. ft Technology      CC
                                     Environmental Engineering A Testing CC
                                     Environmental Sys. Service Ltd      CC
                                     Environmental Systems Service       CC
                                     Enviroserv-Radon Detect, of OH      CC
                                     Home Buyers Inspection Service      CC
                                     Hoosier Environmental               CC
                                     Insul-Tech, Inc.                    CC
                                     Microbac Labs, Erie Testing Lab Div CC
                                     Microbac Labs, Hanover, PA          CC
                                     Microbac Labs, MA Testing Division  CC
                                     Microbac Labs, New Castle, PA       CC
                                     Microbac Labs, Pittsburgh, PA       CC
                                     Microbac Labs, Schiller Div.        CC
                                     Microbac Labs, Seaway Div           CC
                                     Rad-Test, Inc.                      CC
                                     Radon Detection Specialists         CC
                                     Radon Surveys, Div: Alpha Tech Corp GW
                                     Scientific Analysis, Inc.           CC
                                     Sorensen Enterprises, Inc.          CC

                                   IOWA

                                     AIDCO Maine Corp                    CC
                                     Cavin Analytical  Consultants        CC,GR,GW
                                     Chem-Safe Inc.                     '  CC
                                     Columbia Radiological  Test Lab      AT
                                     Commonwealth Eng.  ft Technology      CC
                                     Energy Marketing Midwest,  Inc        CC
                                     Environmental  Sys.  Service Ltd      CC
                                     Environmental  Systems Service        CC
                                     Frazier  Co.,  The                    CC
                                     Microbac Labs,  Hanover,  PA          CC
                                     Microbac Labs,  MA Testing Division   CC
                                     Microbac Labs,  New Castle,  PA        CC
                                    .Microbac Labs,  Pittsburgh,  PA        CC
                                     Microbac Labs,  Schiller  Div.         CC
    * For addresses, phone numbers, and performance records see Table 2.
    + Non-commercial laboratory for research purposes or State agencies' assistance only.

-------
                                                            TABLE 1
                                             MEASUREMENT COMPANIES BY SERVICE AREAS
         Company                   Measurement Methods
                                                                           * Company
                                                                                                           Measurement Methods
  Microbac Labs,  Seaway Div          CC
  Scientific Analysis,  Inc.          CC
  Sorensen Enterprises, Inc.          CC

KANSAS

  Alpha Radon Screening & Home       CC
  Cavin Analytical Consultants       CC,GR,GW
  Chem-Safe Inc.                      cc
  Colorado Radon Engineering Inc     CC
  Columbia Radiological Test Lab     AT
  Environmental Engineering ft Testing CC
+ KS Dept. of Health & Environ.       CC
  : Radon & Environ. Professionals     AT,CC
  Radon Testing Svc, Englewood,  CO   CC,GW
  Scientific Analysis, Inc.          CC
  Sorensen Enterprises, Inc.         CC

KENTUCKY
  AIDCO Maine Corp                    CC
  Advanced Materials Enterprises, Inc CC
Cavin Analytical  Consultants
Chem-Safe Inc.
Commonwealth Eng. ft Technology
Energy Systems, Inc
Environmental Radon Measurements
Environmental Sys. Service Ltd
Environmental Systems Service
Enviroserv-Radon Detect, of OH
Hoosier Environmental
Insul-Tech, Inc.
                                      CC,GR,GW
                                      CC
                                      CC
                                      AT,CC,CR,GR
                                      AT
                                      CC
                                      CC
                                      CC
                                      CC
                                      CC
Microbac Labs, Erie Testing Lab Div CC
Microbac Labs, Hanover, PA
Microbac Labs, MA Testing Division
Microbac Labs, New Castle, PA
Microbac Labs, Pittsburgh, PA
Microbac Labs, Schiller Div.
Microbac Labs, Seaway Div
Rad-Test, Inc.
                                      CC
                                      CC
                                      CC
                                      CC
                                      CC
                                      CC
                                      CC
  Radon Measurement ft Control          CC
  Scientific Analysis,  Inc.            CC
  Sorensen Enterprises,  Inc.           CC

LOUISIANA

  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                       CC
  Environmental Radon Measurements    AT
  Enviroserv-Radon Detect,  of  AL      CC
  Microbac Labs,  Erie Testing  Lab Div CC
  Scientific Analysis, Inc.            CC
  Sorensen Enterprises,  Inc.           CC

MAINE

  AAAirscan Engineering Corp.          AT,CC
  AIDCO Maine  Corp                     CC
.  Biomedical Toxicology Assoc.        CC
  Boxford Radon Lab   (B.R.L.)          CC
  Cavin Analytical Consultants        CC.GR.GW
  Commonwealth Eng.  & Technology      CC
  Environmental Control Technologies  CW
  Environmental Sys.  Service Ltd      CC
  Environmental Systems Service       CC
  Federal NucIide Monitors            CC
  Microbac  Labs,  Erie Testing Lab Div CC
  Microbac  Labs,  Hanover, PA          CC
  Microbac  Labs,  MA Testing Division  CC
  Microbac  Labs,  New Castle, PA       CC
  Microbac  Labs,  Pittsburgh, PA       CC
  Microbac  Labs,  SchiIler Div.        CC
  Microbac  Labs,  Seaway Div           CC
  New England  Radon, LTD.             CC
  Radon  Detection,  Inc.               CR
  Radon  Engr,  a Unit of PSI Engr, Inc CW
  Radon  Inspection Service            GR,GW
  Radon  Registry                      CC
  Radonics, Inc.                       GW,CW
  Residential  Radon Test Service      CC
     * For addresses,  phone numbers, and performance records see Table 2.
     + Non-commercial  laboratory for research purposes or State agencies' assistance  only.

-------
                                                             TABLE 1
                                              MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company
  Scientific Analysis, Inc.
  Sorensen Ehterpi ises, Inc.

MARYLAND
Measurement Methods

  CC
  CC
  AAAirscan Engineering Corp.          AT,CC
  ABE Radiation Measurements Lab      GR,GW,CW
  AIOCO Maine Corp                    CC
  Abionics, Ltd.                      AT,CC
  Alpha Control, Inc.                  QW
  Alpha-Ban                           AT,CC
  Appalachian Envir. Testing Inc      CW
  Biomedical  Toxicology Assoc.         CC
  CDS Technologies, Inc.               CW
  Cavin Analytical Consultants         CC,GR,GW
  Commonwealth Eng. ft Technology      CC
  Continental  Environment Company      AT,CC
  Ecological  Interactions, Inc.        AT,CC
  Environmental  Engineering ft Testing  CC
  Environmental  Radioactivity Measure  CR,GR
  Environmental  Sys. Service Ltd       CC
  Environmental  Systems Service        CC
  Env i roserv                          CW
  Federal Nuclide Monitors            CC
  Foresight Engineering, Inc.,  VA     CC
  Garco Research Company              CC
  Health Physics Associates,  Inc.     GR,OSW,CW
 Home Sure Inspections, Inc.         GR
 Microbac Labs, Erie Testing Lab Div CC
 Microbac.Labs, Hanover, PA          CC
 Microbac Labs, MA Testing Division  CC
 Microbac Labs, New Castle,  PA       CC
 Microbac Labs, Pittsburgh,  PA       CC
 Microbac Labs, Schiller Div.         CC
 Microbac Labs, Seaway  Div           CC
 R.J. Moore ft Associates,  Inc.        AT,CC
 RADON Home Inspection  Service       GW
 Radon Engr,  a Unit of  PSI Engr, Inc CW
 Radon Management Company             CC
 Radon Mitigators, Inc.               CC
                                                                              * Company
                                     Measurement Methods
  Radonics, Inc.                       GW CW
  Scientific Analysis, Inc.            CC*
  ShotwelI Associates                  CW
  Sorensen Enterprises, Inc.           CC
  Terradynamics Corporation            AT
  West Coast Environmental Services    CC

MASSACHUSETTS

  AAAirscan Engineering Corp.         AT,CC
  AIDCO Maine Corp                    CC
  Biomedical  Toxicology Assoc.        CC
  Boxford Radon Lab  (B.R.L.)         CC
  Cavin Analytical Consultants        CC,GR,GW
  Commonwealth Eng. A Technology      CC
  Environmental Control  Technologies  CW
  Environmental Sys. Service Ltd      CC
  Environmental Systems  Service       CC
  Enviroserv                           CW
  Federal  Nuclide  Monitors            CC
  Foresight Engineering, Inc.,  VA     CC
  Microbac Labs, Erie Testing Lab Div CC
  Microbac Labs, Hanover,  PA          CC
  Microbac Labs, MA Testing  Division   CC
  Microbac Labs, New Castle,  PA       CC
  Microbac Labs, Pittsburgh,  PA       CC
  Microbac Labs, Schiller  Div.         CC
  Microbac Labs, Seaway Div            CC
  New England Radon, LTD.              CC
  Radiation Safety Associates,  Inc.    CC
 Radon Detection, Inc.                CR
 Radon Engr,  a Unit of PSI Engr, Inc  CW
 Radon Inspection Service             AT,CR,GR,GW
 Radon Registry                       CC
 Radon Safety Services,  Inc.          CW
 Radon Technologies Inc.             AT,CC,GR
 Radon X Company,  Inc.,  The          GW
 Radonics, Inc.                      GW,CW
 Residential  Radon Test Service      CC
 Scientific Analysis, Inc.           CC
   *  For addresses,  phone numbers, and performance records see Table 2.
   +  Non-commercial  laboratory for research purposes or State agencies' assistance only.

-------
                                                            TABLE 1
                                             MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company

  Sorensen Enterprises,  Inc.

MICHIGAN
Measurement Methods

  CC
                                                                              * Company
                                                                                                           Measurement Methods
  AIDCO Maine Corp
  Air-Tight of Genesee
  Cavin Analytical Consultants
  Chem-Safe Inc.
  Commonwealth Eng. ft Technology
  Environmental Sys. Service Ltd
  Environmental Systems Service
  Enviroserv-Radon Detect, of OH
  Hoosier Environmental
  Insul-Tech, Inc.
  Microbac Labs, Hanover, PA
  Microbac Labs, MA Testing Division
  Microbac Labs, New Castle, PA
  Microbac Labs, Pittsburgh, PA
  Microbac Labs, Schiller Div.
  Microbac Labs, Seaway Div
  Radon Surveys, Div. Alpha Tech Corp
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.

 MINNESOTA

  AAAirscan Engineering Corp.
  Cavin Analytical  Consultants
  Chem-Safe Inc.
  Energy Marketing Midwest, Inc
  Enviroserv-Radon Detect, of OH
  Madrona Divirsified, Inc.
  Radon Measurement ft Control
  Scientific  Analysis, Inc.
  Shotwe11 Assoc i ates
  Sorensen Enterprises,  Inc.
  West Coast Environmental Services

 MISSISSIPPI
  CC
  CC
  CC,GR,GW
  CC
  CC
  CC
  CC
  CC
  CC
  ec
  CC
  CC
  CC
  CC
  CC
  CC
  GW
  CC
  CC
   AT,CC
   CC,GW
   CC
   CC
   CC
   CC
   CC
   CC
   GW
   CC
   CC
  Advanced Materials Enterprises, Inc CC
  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Environmental Radon Measurements    AT
  Enviroserv-Radon Detect, of AL      CC
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC

MISSOURI

  ACI Chemical Co. In. d/b/a ACI Insu CC
  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Columbia Radiological Test Lab      AT
  Environmental Engineering ft Testing CC
  Radon ft Environ. Professionals      AT,CC
  Radon Testing Svc, Englewood, CO    CC,GW
  Residential Radon Measurements      AT,CC
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC

MONTANA

  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Environmental Engineering ft Testing CC
  Faytek  Incorporated
  Integral  Resources,  Inc.
  Madrona Divirsified,  Inc.
  Radon Consultants, CO
  Radon Screening Service,  Inc.
  Radon Testing Svc, Englewood,  CO
  Scientific Analysis,  Inc.
  Sorensen  Enterprises, Inc.

 NEBRASKA

  AAAirscan Engineering Corp.
  Alpha Radon Screening ft Home
  Cavin Analytical  Consultants
AT,CC
AT
CC
AT,CC
AT,CC
CC,GW
CC
CC
                                                                          AT,CC
                                                                          CC
                                                                          CC,GR,GW
     * For addresses,  phone numbers,  and performance records see Table 2.
     + Non-conmercial  laboratory for  research purposes or State agencies' assistance only.

-------
                                                              TABLE 1
                                               MEASUREMENT COMPANIES BY SERVICE AREAS
        * Company
Measurement Method*
   Chem-Safe Inc.                      CC
   Colorado Radon Engineering Inc      CC
   Columbia Radiological Test Lab      AT
   Energy Marketing Midwest, Inc       CC
   Frazier Co., The                    CC
   Radon ft Environ. Professionals      AT,CC
   Radon Testing Svc,  Englewood, CO    CC,GW
   Scientific Analysis,  Inc.           CC
   Sorensen Enterprises, Inc.           CC

 NEVADA

   AAAirscan Engineering Corp.          AT,CC
   Cavin Analytical  Consultants         CC,GR,GW
   Chem-Safe Inc.                       CC
   Environmental Engineering ft Testing  CC
   Faytek Incorporated                  AT,CC
   Hazen Research,  Inc.                 CC
   Integral  Resources, Inc.             AT
   Madrona Divirsified,  Inc.            CC
   Radon Screening Service,  Inc.       AT,CC
   Radon Testing Svc, Englewood, CO    CC,GW
   Scientific Analysis,  Inc.           CC
   Sorensen Enterprises, Inc.          CC
   West  Coast Environmental Services   CC

NEW HAMPSHIRE

  AAAirscan Engineering Corp.          AT,CC
  AIDCO Maine Corp                    CC
  Boxford Radon Lab  (B.R.L.)          CC
  Cavin Analytical  Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Commonwealth Eng. ft Technology      CC
  Environmental Control  Technologies  CW
  Environmental Sys. Service Ltd      CC
  Environmental Systems  Service        CC
  Federal Nuclide Monitors            CC
  Microbac  Labs, Erie  Testing Lab Div  CC
  Microbac  Labs, Hanover,  PA         CC
                                                                               * Company
                                                                       Measurement Methods
                                     Microbac Labs,  MA Testing Division
                                     Microbac Labs,  New Castle, PA
                                     Microbac Labs,  Pittsburgh, PA
                                     Microbac Labs,  Schiller Div.
                                     Microbac Labs,  Seaway Div
                                     New England  Radon,  LTD.
                                     Radon Detection,  Inc.
                                     Radon Inspection  Service
                                     Radon Registry
                                     Radon X  Company,  Inc., The
                                     Radonics, Inc.
                                     Residential Radon Test Service
                                     Scientific Analysis, Inc.
                                     Sorensen Enterprises, Inc.

                                  NEW JERSEY

                                    A-l Sherlock Home Inspectors
                                    AAAirscan Engineering Corp.
                                    ABE Radiation Measurements Lab
                                    AIDCO Maine Corp
                                    Air-N-Sol Corporation
                                    A11  Eastern Home Inspection Co.
                                    BCT
                                    Biomedical  Toxicology Assoc.
                                    CDS  Technologies,  Inc.
                                    Cavin Analytical Consultants
                                    Chem-Safe Inc.
                                    Chief Construction Specialists
                                    Commonwealth  Eng.  ft  Technology
                                    Continental Environment Company
                                    Dittmar Inspection Co. Inc.
                                    ECO Testing Corporation
                                    Eastern Integrated Services
                                    Ecological Interactions, Inc.
                                    Environmental Engineering ft Testing
                                    Environmental Radioactivity Measure
                                    Environmental Sys. Service Ltd
                                   Environmental Systems Service
                                   Enviroserv
  CC
  CC
  CC
  CC
  CC
  CC
  CR
  GW
  CC
  GW
  GW,CW
  CC
  CC
  CC
 CW
 AT,CC
 GR,GW,CW
 CC
 AT
 CC
 CC
 CC
 CW
 CC,GR,GW
 CC
 CC
 CC
 AT,CC
 CC
 CC
 CC
 AT,CC
 CC
 CR,GR
CC
CC
CW
   * For addresses, phone numbers, and performance records see Table 2*
   + Non-conmercial laboratory for research purposes or State agencies' assistance only.

-------
                                                            TABLE  1
                                             MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company
                                    Measurement Methods
       * Company
                                                                                                           Measurement Methods
  Envr.  Testing  & Consulting Corp.     CC,CW
  Excel  Inspection Service Inc.        CC
 ,Faytek Incorporated                  AT,CC
 :Federal  NucIide Monitors            CC
  Foresight Engineering,  Inc., NJ     CC,CW
  Garco  Research Company               CC
  Health Physics Associates, Inc.     GR,GW,CW
  Home-Tech Engineering               CC
  JBK Inspection Service, Inc.         CC
  Lamson Home Inspections             CC
  MRC Home Inspections                CC
  Microbae Labs, Erie  Testing Lab Div CC
  Microbac Labs, Hanover, PA          CC
  Microbac Labs, MA Testing Division  CC
  Microbac Labs, New Castle, PA        CC
  Microbac Labs, Pittsburgh, PA        CC
  Microbac Labs, Schiller Div.         CC
  Microbac Labs, Seaway Div           CC
+ NJ DEP - Bureau of Env. Radiation   CC,OW,CW
•»• NJ Dept of Environmental Protection CC
  0. K.  Rems Corp.                    GW
  Princeton Home Inspection Svc.      CC
  R.J. Moore t Associates, Inc.        AT,CC
  Radiation Surveys Incorporated      CC,GR
  Radon detection Services, Inc., NJ  GW,CW
  Radon Diagnostics                   CC
  Radon Engr, a Unit of PSI Engr, Inc CW
  Radon Gasbusters                    CW
  Radon Inspection Service            AT,CC,CR,GR,GW
  Radon Management Laboratories       CC,GW,RP
  Radon Mitigators, Inc.              CC
  Radon Safety Services, Inc.         CW
  Radon Technologies Inc.             AT,CC,GR
  Radon Testing Svcs,  Princeton, NJ   CC
  Radonics, Inc.                      GW,CW
  Ram Exterminators                   CC
  Ross Systems, Inc.                  GW,CW
  Safe & Sound Home Inspect. Con      CC
  Safe Shelter Environmental          CW
  Scientific Analysis, Inc.           CC
  Shelterworks Inc.
  Shotwell Associates
  Silver Springs Home Inspection
  Sorensen Enterprises, Inc.
  Thorough Check, Inc.
CC
GW,CW
GW
CC
CC
  U.S. Toxic Substance Testing Bureau CW
  Union Cnty. Bid. Inspection Svc     CC
NEW MEXICO

  Alpha Radon Screening & Home
  Cavin Analytical Consultants
  Chem-Safe Inc.
  Hazen Research, Inc.
  Integral Resources, Inc.
  Madrona Divirsifled, Inc.
  Natural Resource Technologies
  Radon Measurement and Control
  Radon Screening Service, Inc.
  Radon Testing Svc, Englewood, CO
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.

NEW YORK

  A-l Sherlock Home Inspectors
  AMirscan Engineering Corp.
  ABE Radiation Measurements Lab
  AIDCO Maine Corp
  Air-N-Sol Corporation
  All Eastern Home Inspection Co.
  Biomedical Toxicology Assoc.
  Boxford Radon Lab   (B.R.L.)
  CDS Technologies, Inc.
  Cavin Analytical Consultants
  Chem-Safe Inc.
  Chief Construction Specialists
  Commonwealth Eng. ft Technology
  Continental Environment Company
  ECO Testing Corporation
CC
CC,GR,GW
CC
CC
AT
CC
CC
AT
AT,CC
CC,GW
CC
CC
CW
AT,CC
GR,GW,CW
CC
AT
CC
CC
CC
CW
CC,GR,GW
CC
CC
CC
AT,CC
CC
    * For addresses, phone numbers, and performance records see Table 2.
    + Non-commercial laboratory for research purposes or State agencies' assistance only.

-------
                                                                         TABLE 1
                                                          MEASUREMENT COMPANIES BY SERVICE AREAS
00
                     Company
Measurement Methods
   Ecological Interactions, Inc.
   Environmental Radioactivity Measure
   Environmental Sys. Service Ltd
   Environmental Systems Service
   Enviroserv
   Faytek Incorporated
   Federal NucIide Monitors
   Garco Research Company
   Health Physics Associates, Inc.
   Home-Tech Engineering
   MRC Home Inspections
   Microbac Labs, Erie Testing Lab Div
   Microbac Labs, Hanover,  PA
   Microbac Labs, MA Testing Division
   Microbac Labs, New Castle,  PA
   Microbac Labs, Pittsburgh,  PA
   Microbac Labs, Schiller  Div.
   Microbac Labs, Seaway Div
 + New York State Dept.  of  Health
   0.  K.  Rents Corp.
   Radiation Safety  Associates,  Inc.
   Radiation Surveys Incorporated
   Radon  Detection Services,  Inc.,  NJ
   Radon  Diagnostics
   Radon  Engr, a  Unit of PSI Engr,  Inc
   Radon  Inspection  Service
   Radon  Management  Laboratories
   Radon  Measurement ft Control
   Radon  Mitigators,  Inc.
   Radon  Safety Services, Inc.
   Radon  Technologies Inc.
   Radon  X  Company,  Inc., The
   Radonics,  Inc.
   Res-I-Tec
   Ronald Stein Construction Inc.
   Ross Systems, Inc.
   Scientific Analysis,  Inc.
   Shotwell Associates
„  Sorensen Enterprises, Inc.
  AT,CC
  CR,GR
  CC
  CC
  cw
  AT,CC
  CC
  CC
  GR,GW,CW
  CC
  CC
  CC
  CC
  CC
  CC
  CC
  CC
  CC
  CC
  GW
  CC
  CC,GR
  GW,CW
  CC
  CW
 AT,CC,CR,GR,GW
 CC,GW,RP
 CC
 CC
 CW
 AT,CC,GR
 GW
 GW,CW
 CC
 AT,CC
 GW,CW
 CC
 GW,CW
 CC
                                                                                          * Company
                                                                       Measurement Methods
 NORTH CAROLINA

   AAAirscan Engineering Corp.         AT
   AIDCO Maine Corp                    CC
   Appalachian Envir. Testing Inc      CW
   Carolina Radon Consultants          CC
   Cavin Analytical Consultants        CC,GR,GW
   Chem-Safe Inc.                      CC
   Commonwealth Eng. ft Technology      CC
   Enviradon,  Inc.                      ^7 CC
   Environmental  Radon Measurements    AT
   Environmental  Sys.  Service Ltd      CC
   Environmental  Systems Service        CC
   Microbac Labs, Erie Testing Lab  Div  CC
   Microbac Labs, Hanover, PA
   Microbac Labs, MA Testing  Division
   Microbac Labs, New  Castle,  PA
   Microbac Labs, Pittsburgh,  PA
   Microbac Labs, Schiller Div.
   Microbac Labs, Seaway Div
+  NC Dept.  of Human Resources
   Radiological Physics Services
   Radon Management Company
   Radonics, Inc.
  Roberts Environmental Services
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.
+ University of North Carolina
CC
CC
CC
CC
CC
CC
GR
CC
CC
GW,CW
AT,CC,CR,GR,GW,CW
CC
CC
CC
                                                                                  NORTH DAKOTA

                                                                                    Cavin Analytical Consultants        CC,GR,GW
                                                                                    Chem-Safe Inc.                      CC
                                                                                    Radon Consultants, CO               AT,CC
                                                                                    Radon Screening Service, Inc.       AT,CC
                                                                                    Radon Testing Svc, Englewood, CO    CC,GW
                                                                                    Scientific Analysis,  Inc.           CC
                                                                                    Sorensen Enterprises, Inc.           CC
                                                                                    West Coast Environmental Services   CC
               * For addresses,  phone numbers,  and  performance  records see Table 2.
               + Non-commercial  laboratory  for  research purposes or State agencies' assistance  only.

-------
                                                             TABLE 1
                                              MEASUREMENT COMPANIES BY SERVICE AREAS
       * Company                    Measurement Methods
OHIO
                                OH
  AIDCO Maine Corp
  Cavin Analytical Consultants
  Chem-Safe Inc.
  Commonwealth Eng. ft Technology
  Environmental Sys. Service Ltd
  Environmental Systems Service
  Enviroserv-Radon Detect, of OH
  Hoosier  Environmental
  Insul-Tech, Inc.
  Microbac Labs, Erie Testing Lab Div
  Microbac Labs, Hanover, PA
  Microbac Labs, MA Testing Division
  Microbac Labs, New Castle, PA
  Microbac Labs, Pittsburgh, PA
  Microbac Labs, Schiller Div.
  Microbac Labs, Seaway Div
  RADON SURVEY SYSTEMS, Inc.
  Radon Detection Systems Inc
  Radon Measurement ft Control
  Radonics,  Inc.
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.
  Triple Seal, Inc.

OKLAHOMA

  Cavin Analytical Consultants
  Chem-Safe  Inc.
  Columbia Radiological Test Lab
  Radon ft Environ. Professionals
  Radon Screening Service,  Inc.
  Radon Testing  Svc, Englewood,  CO
  Scientific Analysis,  Inc.
  Sorensen Enterprises,  Inc.

OREGON

  Chem-Safe Inc.
CC
CC,GR,GW
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
AT.CC
CC
CC
GW,CW
CC
CC
CC
                                      CC,GR,GW
                                      CC
                                      AT
                                      AT,CC
                                      AT.CC
                                      CC.GW
                                      CC
                                      CC
                                      CC
                                                                               Company
                                                                                                           Measurement Methods
  Environmental Engineering ft Testing CC
  Faytek Incorporated                 AT,CC
  Madron* Diversified, Inc.           CC
  Radon Testing Svc, Englewood, CO    CC.GW
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC
  West Coast Environmental Services   CC

PENNSYLVANIA

  A-1 Sherlock Home Inspectors        CW
  AAAirscan Engineering Corp.         AT,CC
  ABE Radiation Measurements Lab      GR,GW,CW
  AIDCO Maine Corp                    CC
  Air-N-Sol Corporation               AT
  All Eastern Home Inspection Co.     CC
  Alpha-Ban                           AT,CC
  Biomedical Toxicology Assoc.        CC
  CDS Technologies, Inc.              CW
  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Chief Construction Specialists      CC
  Commonwealth Eng. ft Technology      CC
  Continental Environment Company     AT,CC
  Ecological Interactions, Inc.      ' AT,CC
  Environmental Sys. Service Ltd      CC
  Environmental Systems Service       CC
  Enviroserv                          CW
  Enviroserv-Radon Detect, of OH      CC
  Faytek Incorporated                 AT,CC
  Foresight Engineering, Inc., NJ     CC
  Garco Research Company              CC
  Health Physics Associates, Inc.     GR,GW,CW
  Home-Tech Engineering               CC
  Insul-Tech, Inc.                    CC
  Microbac Labs, Erie Testing Lab  Div CC
  Microbac Labs, Hanover, PA          CC
  Microbac Labs, MA Testing Division CC
  Microbac Labs, New Castle, PA       CC
  Microbac Labs, Pittsburgh, PA       CC
    ..* For addresses, phone numbers, and performance records see Table 2.
     + Non-commercial  laboratory for research purposes or State agencies' assistance only.

-------
                                                                         TABLE 1
                                                          MEASUREMENT COMPANIES BY SERVICE AREAS
                     Company
                                     Measurement Methods
                                                                                          * Company
                                                                                                            Measurement Methods
ro
o
   Microbac Labs,  SchiI lor Div.         CC
   Microbac Labs,  Seaway Div           CC
   0.  K.  Rems Corp.                     GW
   Princeton Home  Inspection Svc.       CC
   R.J. Moore ft Associates,  Inc.        AT,CC
   Radioactivity Alert Detection Serv.  AT,CC
   Radon  Detection Services, Inc., NJ   GW,CW
   Radon  Diagnostics                    CC
   Radon  Inspection Service             AT,CC,CR,GR,GW
   Radon  Management Company             CC
   Radon  Management Laboratories        CC,GW,RP
   Radon  Mitigators, Inc.               CC
   Radon  Safety  Services, Inc.          CW
   Radon  Technologies Inc.              AT,.CC,GR
   Radon  Testing Svcs, Princeton, NJ    CC
   Radonics,  Inc.                       GW,CW
   Reynolds Radiological Services, Inc  CW
   Ross Systems, Inc.                  GW,CW
   Safe Shelter Environmental          CW
   Science Management Services, Ltd.    GW
   Scientific Analysis,  Inc.           CC
   ShotwelI Associates                 GW,CW
  Soronsen Enterprises,  Inc.          CC
  U.S. Toxic Substance  Testing Bureau CW

RHODE ISLAND

  AAAirscan Engineering Corp.          AT,CC
  AIDCO Maine Corp                    CC
  Biomedical Toxicology  Assoc.         CC
  Boxford Radon Lab   (B.R.L.)          CC
  Cavin Analytical Consultants         CC,GRJGW
  Commonwealth Eng. ft Technology       CC
  Environmental  Control  Technologies   CW
  Environmental  Sys. Service Ltd       CC
  Environmental  Systems  Service        CC
  Env i roserv                          CW
  Foresight Engineering, Inc., VA      CC
  Microbac  Labs, Erie Testing Lab Div  CC
  Microbac  Labs, Hanover, PA           CC
   Microbac  Labs,  MA Testing Division  CC
   Microbac  Labs,  New Castle,  PA       CC
   Microbac  Labs,  Pittsburgh,  PA       CC
   Microbac  Labs,  Schiller Div.         CC
   Microbac  Labs,  Seaway Div           CC
   New England Radon,  LTD.              CC
   Radiation Safety  Associates,  Inc.    CC
   Radon Engr, a Unit  of PSI Engr, Inc  CW
   Radon Inspection  Service             GR,GW
   Radonics, Inc.                       GW,CW
   Residential Radon Test Service       CC
   Scientific Analysis, Inc.            CC
   Sorensen Enterprises, Inc.           CC

 SOUTH CAROLINA

   AAAirscan Engineering Corp.   '      AT,CC
   Carolina Radon Consultants          CC
   Cavin Analytical Consultants        CC,GR,GW
   Commonwealth Eng.  ft Technology      CC
   Enviradon, Inc.                      KJ (£
   Environmental  Radon Measurements    AT
   Environmental  Sys. Service Ltd      CC
   Environmental  Systems Service       CC
   Enviroserv-Radon Detect, of AL      CC
   Microbac Labs, Erie Testing Lab  Div CC
   Microbac Labs, Hanover, PA          CC
   Microbac Labs, MA  Testing  Division   CC
   Microbac Labs, New Castle, PA       CC
   Microbac Labs, Pittsburgh, PA       CC
   Microbac Labs, Schiller Div.         CC
   Microbac Labs, Seaway Div            CC
+  S. C. Dept of Health ft Env Control   CC
   Scientific Analysis, Inc.            CC
   Sorensen Enterprises, Inc.          CC

SOUTH DAKOTA

  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      £C
               * For addresses,  phone numbers,  and performance  records  see Table 2.
               + Non-commercial  laboratory for  research  purposes or State  agencies'  assistance only.

-------
ro
                   Company
                                                                       TABLE 1
                                                        MEASUREMENT COMPANIES BY SERVICE AREAS

                                              Measurement Methods                       * Company
                                                                                                         Measurement Methods
             Energy Marketing Midwest, Inc
             Radon Consultants, CO
             Radon Screening Service, Inc.
             Radon Testing Svc, Englewood, CO
             Scientific Analysis, Inc.
             Sorensen Enterprises,  Inc.
             West Coast Environmental Services

           TENNESSEE
                                    CC
                                    AT,CC
                                    AT,CC
                                    CC,GW
                                    CC
                                    CC
                                    CC
 ACI Chemical  Co. In, d/b/a ACI Insu
 AIDCO Maine Corp
 Advanced Materials Enterprises, Inc
 CDS Technologies, Inc.
 Carolina Radon Consultants
 Cavin Analytical Consultants
 Chem-Safe Inc.
 Commonwealth Eng. & Technology
 Energy Systems, Inc
 Environmental Radon Measurements
 Environmental Sys. Service Ltd
 Environmental Systems Service
 Enviroserv-Radon Detect, of AL
 Microbac Labs,  Erie Testing Lab Div
 Microbac Labs,  Hanover, PA
 Microbac Labs,  MA Testing Division
 Microbac Labs,  New Castle, PA
 Microbac Labs,  Pittsburgh, PA
 Microbac Labs,  Schiller Div.
 Microbac Labs,  Seaway Div
 Radiation  Services  Inc.
 Radon Air  Pollution Testing Co, Inc
 Radon Detection Systems of TN
 Radon Measurement & Control
 Safe Air
 Scientific Analysis,  Inc.
 Sorensen  Enterprises, Inc.

TEXAS
CC
CC
CC
CW
CC
CC,GR,GW
CC
CC
AT,CC,CR,GR
AT
CC
CC
CC
CC
CC
CC
CC
CC
CC
CC
GR.
AT,CC
CC,GW
CC
CC
CC
 CC
                                   Cavin Analytical  Consultants        CC,GR,GW
                                   Chem-Safe  Inc.                       °C
                                   Continental  Environment Company     AT,CC
                                   Environmental  Engineering ft Testing CC
                                   Madrona Divirsified,  Inc.           CC
                                   Radon Measurement and Control       AT
                                   Radon Testing Svc, Englewood, CO    CC,GW
                                   Scientific Analysis,  Inc.
                                   Sorensen Enterprises, Inc.
                                   West Coast Environmental Services
                                                                                                            CC
                                                                                                            CC
                                                                                                            CC
                                                                                 UTAH
  Cavin Analytical  Consultants
  Chem-Safe  Inc.
  Environmental Engineering & Testing
  Faytek  Incorporated
  Hazen Research,  Inc.
  Integral Resources, Inc.
  Madrona Divirsified,  Inc.
  Radiation  Surveys Incorporated
  Radon Consultants, CO
  Radon Measurement and Control
  Radon Screening Service, Inc.
  Radon Testing Svc,.Englewood, CO
  Scientific Analysis, Inc.
  Sorensen  Enterprises, Inc.
  West Coast Environmental Services

VERMONT

  AAAirscan Engineering Corp.
  AIDCO Maine Corp
  Biomedical Toxicology Assoc.
  Boxford Radon Lab  (B.R.L.)
  Cavin Analytical Consultants
  Commonwealth Eng.  ft Technology
  Environmental Control Technologies
  Environmental Sys. Service Ltd
  Environmental Systems Service
CC,GR,GW
CC
CC
AT.CC
CC
AT
CC
CC,GR
AT.CC
AT
AT,CC
CC,GW
CC
CC
CC
                                                                                                                        AT,CC
                                                                                                                        CC
                                                                                                                        CC
                                                                                                                        CC
                                                                                                                        CC,GR,GW
                                                                                                                        CC
                                                                                                                        CW
                                                                                                                        CC
                                                                                                                        CC
                * For addresses, phone numbers,  and performance records see Table 2.
                + Non-conroercial laboratory for  research  purposes or State agenc.es' assistance only.

-------
                                                                         TABLE 1
                                                          MEASUREMENT COMPANIES BY SERVICE AREAS
ro
IV3
                     Company
                                                Measurement Methods
              Microbac Labs, Erie Testing Lab Div CC
              Microbac Labs, Hanover, PA          CC
              Microbsc Labs, MA Testing Division  CC
              Microbac Labs, New Castle, PA       CC
              Microbac Labs, Pittsburgh, PA       CC
              Microbac Labs, Schiller Div.        CC
              Microbac Labs, Seaway Div           CC
              New England Radon,  LTD.             CC
              Radon Detection,  Inc.                CR
              Radon Engr, a Unit  of  PSI Engr,  Inc CW
                                                                                          * Company
                                                                                                                       Measurement Methods
  Radon Inspection Service
  Radon Registry
  Radon Technologies Inc.
  Radon X Company, Inc., The
  Residential Radon Test Service
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.

VIRGINIA

  AAAirscan Engineering Corp.
  AIDCO Maine Corp
  Abionics,  Ltd.
  Alpha Control,  Inc.
  Appalachian Envir. Testing Inc
  Biomedical  Toxicology Assoc.
 rCavin Analytical Consultants
 ,Chem-Safe  Inc.
  Commonwealth Eng. & Technology
  Continental  Environment Company
  Environmental Engineering  & Testing
  Environmental Radon Measurements
  Environmental Sys. Service Ltd
  Environmental Systems Service
  Enviroserv
  Federal Nuclide Monitors
  Foresight Engineering, Inc.,  NJ
 foresight Engineering, Inc.,  VA
 Garco Research Company
 Home Sure Inspections, Inc.
                                                  GR GW
                                                  cc
                                                  AT CC GR
                                                  GW
                                                  CC
                                                  CC
                                                  CC
                                                 AT,CC
                                                 CC
                                                 AT,CC
                                                 GW
                                                 CW
                                                 CC
                                                 CC,GR,GW
                                                 CC
                                                 CC
                                                 AT,CC
                                                 CC
                                                 AT
                                                 CC
                                                 CC
                                                 CW
                                                 CC
                                                 CC,CW
                                                 CC
                                                 CC
                                                 GR
    Microbac Labs,  Erie Testing Lab Div CC
    Microbac Labs,  Hanover,  PA          CC
    Microbac Labs,  MA Testing  Division   CC
    Microbac Labs,  New  Castle,  PA        CC
    Microbac Labs,  Pittsburgh,  PA        CC
    Microbac Labs,  Schiller  Div.         CC
    Microbac Labs,  Seaway Div            CC
    R.J. Moore & Associates, Inc.        AT,CC
    RADON Home Inspection Service        GW
    Radiological Physics Services        CC
    Radon Engr, a Unit of PSI Engr, Inc  CW
    Radon Management Company             CC
   Radonics, Inc.                      QW CW
   Scientific Analysis, Inc.           CC*
   Sorensen Enterprises, Inc.           CC
   Terradynamics Corporation           AT

 WASHINGTON

   Cavalier Corporation                CC
   Chem-Safe Inc.                       CC
   Faytek Incorporated                  AT cc
   Insul-Tech, Inc.                     cc
   Madrona  Divirsified,  Inc.            CC
 +  Nuclear  Radiation Center             CC
   Radon Testing Svc, Englewood, CO     CC,GW
   Scientific Analysis,  Inc.            CC
  Sorensen Enterprises, Inc.           CC
  West Coast Environmental Services    CC

WEST VIRGINIA

  AAAirscan Engineering Corp.          AT CC
  AIDCO Maine Corp                    cc'
  Cavin Analytical  Consultants        CC,GR,GW
  Commonwealth Eng. &  Technology      CC
  Environmental  Sys. Service Ltd      CC
  Environmental  Systems Service       CC
  Env i roserv                          CW
  Foresight Engineering, Inc.,  VA      CC
              * For addresses, phone numbers, and performance records see Table 2
              * Non-commercial laboratory for research purposes or State agencies' assistance only.

-------
ro
OJ
                                                                       TABLE 1
                                                        MEASUREMENT COMPANIES BY SERVICE AREAS
                    Company
                                              Measurement Methods
                                                                              *  Company
                                                                                                                      Measurement Methods
  Microbac Labs,  Erie Testing Lab Div
  Microbac Labs,  Hanover,  PA
  Microbac Labs,  MA Testing Division
  Microbac Labs,  New Castle, PA
  Microbac Labs,  Pittsburgh, PA
  Microbac Labs,  Schiller  Div.
  Microbac Labs,  Seaway Div
  Radiological Physics Services
  Radon Engr, a Unit of PSI Engr,  Inc
  Radon Management Company
  Radon Measurement & Control
  Radon ics, Inc.
  Scientific Analysis, Inc.
  Sorensen Enterprises, Inc.

WISCONSIN
                                                CC
                                                CC
                                                CC
                                                CC
                                                CC
                                                CC
                                                CC
                                                CC
                                                cw
                                                CC
                                                CC
                                                GW,CW
                                                CC
                                                CC
                                   Scientific Analysis, Inc.           CC
                                   Sorensen Enterprises, Inc.          CC
                                   West Coast Environmental Services   CC

                                 PUERTO RICO

                                   Cavin Analytical Consultants        CC,GR,GW
                                   New England Radon, LTD.             CC
                                   Sorensen Enterprises, Inc.          CC

                                 VIRGIN ISLANDS

                                   AAAirscan Engineering Corp.         AT,CC
                                   Cavin Analytical Consultants        CC,GR,GW
                                   Sorensen Enterprises, Inc.          CC
CC
CC
CC
  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.
  Enviroserv-Radon Detect, of OH
  Home Buyers Inspection Service
  Radon Detection Specialists
  Radon Surveys, Div. Alpha Tech Corp GW
  Scientific Analysis, Inc.           CC
  Sorensen Enterprises, Inc.          CC

WYOMING

  Alpha Radon Screening & Home        CC
  Cavin Analytical Consultants        CC,GR,GW
  Chem-Safe Inc.                      CC
  Colorado Radon Engineering Inc      CC
  Environmental Engineering ft Testing CC
              Faytek  Incorporated
              Hazen Research,  Inc.
              Integral  Resources, Inc.
              Natural Resource Technologies
              Radon Consultants, CO
              Radon Screening  Service,  Inc.
              Radon Testing Svc, Englewood, CO
                                      AT,CC
                                      CC
                                      AT
                                      CC
                                      AT,CC
                                      AT,CC
                                      CC.GW
                  For addresses,  phone numbers, and  performance records see Table 2.
                  Non-commercial  laboratory  for research  purposes or State agencies' assistance only.

-------
                                                                    TABLE 2
                                                        PERFORMANCE RESULTS OF COMPANIES
* Company
A-l Sherlock Home Inspectors
6-O1 Fair lawn Avenue,
Fair lawn, NJ 07410
Steven J. Luxton
(201) 796-4942
AAAirscan Engineering Corp.
8 Eric Drive
Granby, CT 06035
Kevin O'Rourke
(203) 653-5639 (203) 653-4787
ABE Radiation Measurements Lab
Box 214
Lenhartsvi lie, PA 19534
r\)
-P1 Anthony LaMastra
(215) 756-4153
ABMS, Inc.
5506 San Pablo Ave
Oakland, CA 94608
Tim Hussler
(415) 547-7144
ACI Chemical Co. In. d/b/a ACI Insu
P. 0. Box 306
Walnut Ridge, AR 72476
Charles E. Snapp
(501) 886-6625
AIDCO Maine Corp
Grassy Pond House
Rindge, NH 03461
Robert K. Multer
(603) 899-5166

»«^> v, lYUQon nor* ing Level n»fj» «f &„,*„„ w < • • i
Round Measurement Measurement QA D±njf ^'f" f *£klnfl Uv?'
AT rr rp t>a rvi DO /-™ o? Wound Measurement Measurement QA
	 AT CC CR « GW RP CW Plan * Company AT CC CR GR GW RP CW Plan
5/87 il ARIX Sciences, Inc. 5/87 Ll Ll
1200 E. High St. — —
Pottstown, PA 19464
WilliamF. McKelvey
(215) 327-1140
»/»? LJ L1 Abionics, Ltd. n/88 Ll Ll
5/87 Ll Ll 12509 Kings Lake Dr. 5/87 Ll Ll
Reston, VA 22091 - 	 	 ..
Dr. William R. Hancuff
(703) 620-3787
6/87 Ll Ll Ll Li X Accu-Test 5/37 Ll Ll
Suite 115-343, 1350 Beverly Rd
McLean, VA 22101
Bruce Johnson
(703) 448-8088
5'87 1=1 Accurate Air Testing 11/88 Ll
1209 Piney Woods Drive 5/87 Ll
Friendswood, TX 77546
Charles T. Gallagher
(713) 482-5097
5/87 L1 Advanced Materials Enterprises, Inc 5/87 Ll
P. 0. Box 121174
Nashville, TN 37212
Ron Queries
(615) 377-0624
E/87 L1 * Advanced Radiation Monitoring Serv. 5/87 Ll
2219 Prosperity
Portage, MI 49081
Philip B. Noack
(616) 323-9483
— •»•.• — •••••••• — JM«a—^»,— — •••• — ••••••^^^^•«^^^^__ 	 	 - — 1-1,1 »•••! u_l_
    * See TABLE 1 for the States each company serves
Note:
                                                                  capabl- of
      See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                               TABLE 2
                                                                   PERFORMANCE RESULTS OF COMPANIES
      * Company
                                     Date of      .Radon
                                      Round     Measurement
                                              AT  £C  CR  CR
                        Working Level
                         Measurement  QA
                         GW  ,tf>  CW  Plan
                                        * Company
                                                         Date of    •    Radon
                                                          Round      Measurement
                                                                  AT  CC   CR   GR
                                                                                               Working  Level
                                                                                                 Measurement  QA
                                                                                                 GW  RP   CW Plan
 Affiliated Building Inspectors, Inc   5/87   LI  LI
 7223 Delfield Street .
 Chevy Chase, MD 20815

      Larry Wasson
       (301) 986-8866
 Air Chek, Inc.
 Box 2000
 Arden, NC  28704

      B. V. Alvarez
      (704) 684-O893

 Air Sciences, Inc/Overman Assoc.
 P.O. Box 376
 Bonne Terre, MO  63628

   en Ralph T. Overman, Ph.D.
      (314) 358-4011

 Air-N-Sol Corporation
 P.O. Box 437
 •Frenchtown, NJ  08826

      Dale L. Johnson
      (201) 996-2028

 Air-Tight of Genesee
 2429 N. Dort Hwy
t Flint, MI 48506

      David Neb lock
      (313) 235-5010
 All Eastern Home Inspection Co.       6/87
 309 Bloomfield Ave
 Caldwell, NJ  07006

      Peter Kras / Wi11iam Rodgers
   ,  (201) 228-5548
 4/86
 7/86
11/86
 5/87
 A/86
 7/86
11/86
 5/87
 4/86   LI
 7/86   LA
11/86   LI
 6/87   LI
 5/87
LI
LI
LI
LI
LI
U.
LI
LI
        LI
        LI
        LI
LI
LA
LI
LI
LI
            LI
AIpha ControI,  Inc.
6407 Good Luck  Road
Riverdale, MD 20737

      Scott Parry
      (301) 474-0071

Alpha Radon Screening & Home
Inspection Inc.
1216 Chinook Way
Boulder, CO  8O303
      Bill Jewell
      (303) 494-9533

Alpha Spectra
P. 0. Box 6772
Denver, CO 80206

      Frank Wilkinson III, M. S.
      (303) 377-2118

AIpha-Ban
5330 Long Corner Road
White Hall, MD  21161

      Kirk Nevin
      (301) 692-2700

Amersham Corporation
2636 South Clearbrook Drive
Arlington Heights, IL   60005

      Mark A. Doruff
      (316) 693-6300

Appalachian Envir. Testing Inc
105 South Union St. Suite 326
Danville, VA 24641

      Christopher R. Halladay
      (804) 792-1300
                                                                                   11/86
                                                                                    5/87
                                                                                                                          5/87
                                                                                   LI
                                                                               LI  LI
                                                                                    LI
                                                                                    LI
                                                                                               Li
                                                           5/87       LI
                                                  11/86       LI
                                                   6/87   LI  LI
                                                           7/86       LI
                                                          11/86       LI
                                                           6/87   LI  LA
                                                                        7/86   LI
                                                                       11/86   "LI
                                                                        5/87   LI
                                                                                            DT
                                                                                            LI
                                                                                            LI
                 * See TABLE 1 for the States each company serves.
             Note: Underscored performance indicators denote a primary company  capable of performing measurement analyses in house or making measurements
                   using operators and instruments belonging to the company.
                   See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
      * Company
Date of       Radon
 Round     Measurement
         AT  CC  CR  GR
    Working Level
     Measurement  Q.A
     GW  RP  CW  Plan
                                                       Company
                                     Date of       Radon
                                      Round     Measurement
                                              AT  CC  CR  GR
                        Working Level
                         Measurement  QA
                         GW  RP  CW  Plan
Applied  Energy Company
3316 Augusta Avenue
Omaha, NE 68144

     Jon Traudt
      (402) 334-5881

Applied  Health Physics Inc.
2986 Industrial Boulevard
Box 197
Bethel Park, PA  15102
     Nathaniel L. Burden, Jr.
     (412) 563-2242

Applied  Radon Test. & Reduct'n
52205 Warehime Rd.
Cumberland, OH 43732-9804

  Cft Frank J. Donia
     (614) 638-2078

Argonne  National Laboratory
9700 South Cass Avenue
Argonne,  IL  60439

     Henry Lucas
     (312) 972-4172

BCT
12 Magnolia Ave.
Danville, NJ  07834

     Kevin Scot tans
     (201) 627-2802

Barcon, Inc.
599 Waldron Road
LaVergne, TN 37086

     Randal I G.  Smith
     (615) 793-7993
  5/87       LI
 11/86       LI  LI  LI   LI
  5/87   LI  LI  LI  LI   LA
  5/87       LI
             LI
  5/87
LI
 11/86       LI
  5/87       LA
 5/87   LI  LI
Barringer  Laboratories,  Inc.
15000 West Sixth  Avenue,Suite 300
Golden, CO 80401

      David Lasher
      (303) 277-1687

Battelle
505 King Avenue
Columbus,  OH 43201

      V. Pasupathi
      (614) 879-5163

Biomedical Toxicology Assoc.
P. 0. Box 3568
Frederick, MD  21701

      Winifred G. Palmer, Ph.D.
      (301) 662-0783

Bowling Green Radon Laboratory
P. 0. Box 83
Bowling Green, KY  42101

      David W. Williams
      (502) 842-6200
                                                                                     7/88
                                                                                    11/88
                                                                                     5/87
11/86
 5/87
                                                                7/86
                                                               11/86
                                                                5/87
                                                                            LI
                                                                            LI
                                                                            LI
    LI
LI  LI  LI
                                                                                                LI
                                                                                                LI
                                                                                                LI
                                                                5/87       LI
                          Boxford Radon Lab
                          52 WiIdmeadow Rd
                          Boxford, MA 01921
                   (B.R.L.)
 5/87       LI
                                John Fisher
                                (617) 887-9641

                          CA State Dept.  of Health Serv.
                          Sanitation and  Radiation Lab
                          2151  Berkeley Way, Room 465
                          Berkeley, CA 94704
                                George S. Uyesugi
                                (415) 540-2201 (415)  540-2515
                                      6/87
                                                                                               LI
                                                                                                       LI
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a  primary  company capable of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS  OF COMPANIES
     * Company
                                    Date of       Radon
                                     Round     Measurement
                                             AT  CC  CR  GR'
                        Working Level
                         Measurement  QA
                         GW  RP  CW  Plan
CDS Technologies, Inc.
5050 Ti Ighman Street
A 1 1 en town, PA 18104

     Richard D. Martin
     (215) 398-7125

CMT Inc.
2813 Rio Vista
Emporia, KS  66801

     Michael M. Nichols
     (316) 342-2760

Camp Dresser ft McKee Inc.
Raritan Plaza 1, Raritan Ctr.
Edison, NJ 08818

  £!- Jay W. Davis
     (201) 225-7000

Camroden Associates
RD #4 Box 62
Rome, NY 13440

     Terry Brennan
     (315) 865-4269

Canberra Industries Inc.
One State Street
Meriden, CT  06450

     Bruce M. Gi I lespie
     (203) 238-2351

Capital Materials Testing Inc.
P. 0. Box 81
Latham, NY 12110
 5/87   LI  LI
                                                                      LI
11/86
 5/87
 5/87
LI
LI
LI  LI  LI   LI
                                 LI   X
 5/87   LI  LI  LI  LI
 6/87       LI
 5/87       LI
             . Attridge
     (518) 783-3150
                                        * Company
                                                                      Date of       Radon
                                                                       Round     Measurement
                                                                               AT  CC  CR  GR
                                                             Working Level
                                                               Measurement  QA
                                                               GW  RP  CW  Plan
Carolina Radon Consultants            5/87       LI
Box 2000
Etowah, NC 28729

      Ned Doyle
      (704) 891-9559

Cavalier Corporation                  5/87       LI
11516 E. Sprague
Spokane, WA  99206

      Warren Riddie
      (509) 926-6217
Cavin Analytical Consultants
P. 0. Box 454
Snellville, GA 30278

      Donald K. Cavin
      (800) 533-1224
                                  Centarus Corporation                  5/87
                                  P.  0.  Box 513
                                  Glasgow, KY 42141

                                        G. Wayne Calvert
                                        (502) 651-2396

                                  Chem-Safe Inc.                        5/87
                                  1345 Research ft Technology Pk.
                                  Pullman, WA  99163

                                        Cliff Cooper
                                        (509) 335-O922

                                  Chemical Engineering Unit, RTI        5/87
                                  Research Triangle Institute
                                  P.  0.  Box 12194
                                  Research Triangle Park, NC 27709
                                        Linda Michaels / Andy Viner
                                        (919) 541-6261 (919) 541-6747
5/87       LI      LI   LI
                                                                                               LI
                                                                                               LI
                                                                                                   LI
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary company  capable  of  performing  measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                               TA8LE 2
                                                                   PERFORMANCE RESULTS OF COMPANIES
      * Company
                    Date of       Radon
                     Round     Measurement
                             AT  CC  CR  GR
                         Working Level
                          Measurement  QA
                          GW  RP  CW  Plan
 Chief Construction Specialists
 and Inspectors,  Inc.
 Box 284
 Towaco, NJ 07082
      Richard D.  Conk I in
      (201) 299-9087

 Clean Air  Engineering, Inc.
 207 North  Woodwork Lane
 Palatine,  IL 60067

      Ann Marie Ramsden
      (312) 991-3300

 Colorado Radon Engineering Inc
 5104 Greenview Ct.
 Ft.  Collins, CO  80525

  TO  Bill Alexander
      (303) 223-9755

 Columbia Radiological Test Lab
 4054 Victoria Court
 Columbia, MO 65201

     William E. Becker / M Milewski
      (314) 443-3538

 Commonwealth Eng. £ Technology
 3113 North Front Street
 Harrisburg, PA 17110

     Judy F.  Musselman
      (717) 232-2288
                     11/88
                      5/87
                      6/87
             LI
             LI
             LI
                      5/87
            LI
                     6/87   LI
                     6/87
            LI
Con-Test, Inc.
126 Shaker Road
East Longmeadow,
MA  01028
 7/86
11/86
 5/87
LI
LI
LI
     David A. MacLean
     (413) 525-1198
                                                                                          * Company
                                                          Date of       Radon
                                                           Round     Measurement
                                                                   AT  CC  CR  GR
                                                              Working Level
                                                               Measurement   QA
                                                               GW  RP  CW Plan
 Continental Environment Company
 34 Maple Street
 Summit, NJ 07901

       Alvin M. Natkin
       (201) 277-2265

 Core Laboratories Inc
 420 West First St
 Casper, Wy 82601

       David L. Demorest
       (303) 235-6741

 Dittmar Inspection Co.  Inc.
 20 Redding Place
 Towaco,  NJ  07082

       Willy C. fcittmar
       (201)  263-4745

 ECO Testing Corporation
 RD.  1  Box  266  B
 Annandale,  NJ  08801

       Peter W. Georges
       (201)  735-2^70

 EKS  RadTech
 1000 Herald  Square
 Aston, PA   19014

       John T.  Hoback
       (215)  368-9425  (215) 358-9426

 ENV Services,  Inc.
 216 Goddard  Blvd., Suite 117
King of Prussia, PA  19406

      Scott Berger
       (800) 346-0094 (215) 337-8222
                                                            4/86       LI
                                                            7/86       LI
                                                           11/86   LI  LI
                                                            6/87   LI  LI
                                                                                                         5/87
                                                                                                        LI
                                                                                                         5/87
                                                                                                LI
                                                                                                         6/87
                                                                                                LI
                                                                                                        5/87
                                                                                               LI
                                                                                                        5/87
LI
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary company capable of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                          _  TABLE 2;
                                                                  PERFORMANCE RESULTS OF COMPANIES
     * Company
                                    Date of       Radon
                                     Round     Measurement
                                             AT  CC  CR  GR
                        Working Level
                         Measurement  QA
                         GW  RP  CW  Plan
                                        * Company
                                                      Date of       Radon      Working Level
                                                       Round     Measurement    Measurement  QA
                                                               AT  CC  CR  GR   GW  RP  CW  Plan
Eastern Integrated Services
P. 0. Box 784
Princeton Jet., NJ  08550

     Bi11  Thompson / Rick Pettit
     (609) 799-8574

Eberline Instrument Corp.
P. 0. Box 2108
Santa Fe,  MM 87504-2108

     Eric L. Geiger
     (505) 471-3232

Ecological Interactions, Inc.
96 East Main Street
Rockaway,  NJ 07866

  £;  F. Michael Fitzpatrick
     (201) 625-7700

Electro Mechanical Concepts
130 Mountaineer Lane
West Miff I in, PA  15122

     Matt Kovac
     (412) 276-2272

EnRad,  Inc./Rad. T. & Eng. Inc
18705 B. North Frederick Road
Gaithersburg, MD  20879

     Charles Osterberg, Ph.D.
     (301) 948-8040

Energy Marketing Midwest, Inc
E-S7 Rd, Box 93
Kelley, IA 50134

     Kenneth D. Wiggers
     (515) 769-2400
 5/87
                                                 LI
 4/88
 7/86
11/86
 5/87
11/86   LI  LI
 5/87   LI  LI
    Li
LI  LI   X
ML  LI
il  LI
LI  LI
 4/86
 7/86
11/86
 5/87
LI
LI
LI
LI
 7/86       LI
11/86       U
 5/87   LI  LI
 5/87
LI
Energy Systems,  Inc
134 Carr  avenue
Cookeville,  TN  38501

      Dwight G Moore, Jr
       (615)  628-7247

Enviradon, Inc.
914 Rollingwood  Drive
Mt. Holly, NC 28120

      William Brad McRee
       (704)  827-1293

Envirohazards Management,  Inc.
P. 0. Box 1064
So. Orange,  NJ 07079

      Diane  Trainor
       (201)  761-7226

Environ.  Detection Associates
P. 0. Box 1008
Pisgah Forest, NC   28768-1006

      Wolfgang Selle or  Harry Hi 11
       (704)  877-4300

Environmental  Chemistry
1233 Ogden Street,  Suite 604
Denver, Colorado  80218

      John B.  Taylor
      (303)  831-0437

Environmental  Control Technologies
400 Amherst  Street
Nashua, NH   03063

      Harold W.  Eriksen
      (603)  881-7133
                                                                        5/87   LI   LI   LI   LI
                                                                        7/88
                                                                       11/86
                                                                        5/87
                                                                        5/87
LI
LI  LI
LI  LI
                                                                                               LI
                                                       6/87
    LI
                                                                        5/87
                                                                                               LI
                                                       5/87
                                                                                                                    LI
                * See TABLE 1 for  the States each company serves.
            Note: Underscored performance  indicators denote a primary company capable of performing measurement analyses  in  house or making measurements
                  using operators  and instruments belonging to the company.
                  See Definitions  of Performance Indicators on pages 6 and 6.

-------
                                                                  TABLE 2
                                                      PERFORMANCE RESULTS OF COMPANIES
                        Date of       Radon
                         Round     Measurement
                                 AT   CC  CR  GR
       Company


Environmental Engineering ft Testing  11/86       LI
9185 East Kenyon Ave., Suit* 19O      5/87       LA
Denver, CO  80237

     G. P. Logan
  .   (303) 722-2112

Environmental Radioactivity Measure   7/86           LI  LI
P. 0. Box 226                        11/86           LI  LI
Piermont, NY  10968                   5/87           LI  LI

     Katherine El I ins
     (914) 353-3513, (914) 3S3-O208

Environmental Radon Measurements      5/87   LI
49 N. Orange Ave.
Orlando, PL 32801

  o Catherine Hershey
     (305) 648-1969

Environmental Risk Consultants, Inc   5/87       LI
800 Cluster
Evanston, IL 60202

     David Slutzky
     (312) 864-1265

Environmental Sys. Service Ltd        5/87       LI
P. 0. Box'220
College Park, MD  2O740

     G. D. Fleming
     (301) 779-0606

Environmental Systems Service         5/87       LI
P. 0. Box 512
Culpeper, VA 22701

     Cheryl  B. Ludy
     (703) 825-6660
Working Level
 Measurement  QA
 GW  RP  CW  Plan
                                                  LI
                                                                             * Company
Date of       Radon
 Round     Measurement
         AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
                                                                       Env i roserv
                                                                       15 Buckley Hill Road
                                                                       Morristown, NJ 07960

                                                                             Donald M. Ulbrich
                                                                             (2010 285-1065

                                                                       Enviroserv-Radon Detect, of AL
                                                                       325-D Poplar Place
                                                                       Birmingham, AL 35209

                                                                             Douglas T. Ulbrich •
                                                                             (205) 871-6715

                                                                       Enviroserv-Radon Detect, of OH
                                                                       781 Mount Vernon Ave.
                                                                       Marion,  OH  43302

                                                                             D. Todd Ulbrich
                                                                             (614) 382-2354
                                                            7/86       LI
                                                           11/86       LI
                                                            5/87       LI
                                                           11/86       LI
                                                            5/87       LI
                     Envirotest
                     P.O. Box 223
                     North Ridgeville, OH
                                                                                             44039-0223
                                                                             Vincent A.  Gargaro
                                                                             (216)  327-9432

                                                                       Envr.  Testing ft Consulting Corp.
                                                                       1316 Gross Street
                                                                       Manville,  NJ  08835

                                                                             Thomas R.  ReiIly
                                                                             (201)  722-5293

                                                                       Ero Resources Corporation
                                                                       2801 Youngfield,  Suite #121
                                                                       Golden,  CO 804O1

                                                                             Mark DeHaven
                                                                             (303)  231-9022
                                                           11/86
                                                            5/87
                                                                                                            11/86
                                                                                                             5/87
                                                           4/86
                                                           7/88
                                                          11/86
                                                           5/87
                                                           5/87
                                  U
                                  LI
                                  LA
             LI
             LI
             LI
             LI
             LI
             LI
             LI
             LI
            LI
         LI
         LI
         LI
         LI
    * See TABLE 1 for the States each company serves.
Note: Underscored performance indicators denote a primary  company capable of performing measurement analyses in house or making measurements
      using operators and instruments belonging to the company.
      See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
       Company
                                    Date of       Radon      Working Level
                                     Round     Measurement    Measurement  QA
                                             AT  CC  CR  GR   GW  RP  CW  Plan
Excel Inspection Service Inc.
438 Windmill Way
Somerville, NJ 08876

     Daniel R. Loreti
     (201) B26-7277

Faytek Incorporated .
P. 0. Box 2229      ......  .
Coeur D'Alene, ID 83814

     Jan Elizabeth Fay
     (208) 667-3263

Federal Nuclide Monitors
2023 Park Road, N.W.
Washington, DC  20010
 5/87
                                                 LI
 5/87   LI  LI
          A. Danckwerth
     (202) 265-0429

Foresight Engineering, Inc.,  NJ
Box 621
Madison, NJ 07940

     Theresa Kaufmann
     (201) 377-0602

Foresight Engineering, Inc.,  VA
P. 0. Box 7333
Arlington, VA 22207-0333

     Steven Duarte
     (703) 525-4790

Frazier Co., The
15105 Industrial Rd.
Omaha, NE  68144

     Dean Frazier
     (402) 330-3400
11/86
 5/87
 4/86
 7/86
11/86
 5/87
 E/87
LI
LA
LI
LI
LI
LI
LI
LI
 5/87
LI
                                                      Company
                                                                                  Date of        Radon
                                                                                   Round      Measurement
                                                                                           AT  CC  CR  GR
                                                                                                Working Level
                                                                                                 Measurement  QA
                                                                                                 GW  RP  CW  Plan
                                  Futura Medical Systems, Inc.           5/87        LI
                                  387 Regency Ridge
                                  Centerville, OH 45459

                                        E. Theodore Agard, Ph. D.
                                        (513) 436-2215
                                  GEOMET Technologies, Inc.
                                  20251 Century Boulevard
                                  Germantown, MD  2O874

                                        Dr. Niren L. Nagda
                                        (301) 428-9898
                                                   4/86        LI
                                                   7/86        LI
                                                  11/86   LI   LI
                                                   5/87   LI   LA
Garco Research Company                5/87        LI
144A Sutton Road
Lebanon, NJ  08833

      Gary J. GiIbert
      (201) 832-7895

Garden St. Home Inspection Svc        5/87        LI
475 Valley Rd.
West Orange, NJ O7052

      Thomas Pasquariello
      (201) 678-3333

General Health Physics  Inc.           5/87        U
7217 Lockport PI           .
Lorton, VA  22079

      John B. Davis
      (703) 650-7526

Geo-Chek, Inc.                        5/87        LI
2270 Stony Hill Road
Boulder, CO 80303

      Phi I Harrington
      (303) 494-0576
                                                                                                                     LI
                * See TABLE 1 for the States each company serves.                            .  .   .
            Note: Underscored performance indicators denote a primary company  capable of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
     * Company
                               Date of       Radon
                                Round     Measurement
                                        AT  CC  CR  GR
            Working Level
             Measurement  QA
             GW RP  CW Plan
                                * Company
                                                          Date of       Radon
                                                           Round     Measurement
                                                                   AT  CC  CR  GR
                                                              Working Level
                                                               Measurement  QA
                                                               GW  RP  CW  Plan
Gesell Institute, The
Env. ft Occupational Health Div
310 Prospect St.
New Haven, CT 06E11
     Robert McLellan, MD/MPH
     (203) 789-1911

Hazen Research, Inc.
4601 Indiana St.
Golden, CO 80203
                                 5/87   LI  LI
                                 5/87       LI
     John C. Jarvis
     (303) 279-4601 Ex.
                   218
Health Physics Associates, Inc.
RDI Box 796
Lenhartsvi He, PA  19534
 CO
 ro
Anthony La Mastra
(215) 756-4153
Health Physics Associates, Ltd.
3304 Commercial Avenue
Northbrook, Illinois  60062

     William B. Rivkin
     (312) 564-3330

Health and Safety Associates
35 Grove Street
Medford, MA  02155

     Neil A. Gaeta
     (617) 488-7081

Home Buyers Inspection Service
320 Elmwood Drive
Naperville, IL  60540

     John R. Ball P.E.
     (312) 357-0903
                                 7/86
                                11/86
                                 5/87
                                 4/88
                                 7/86
                                11/86
                                 5/87
LI
LI
LI
LI
LI
LI
LA
LI
LI
LI
LI
LI
LI
                     LI
                                 5/87   LI  LI
                                 6/87
LI
 Home Inspection Service,  Inc.          5/87       LI
 1916 Southland  Av«.
 Highland Park,  IL 60035

       Jerry  Comer
       (312)  432-8861  (312)  831-4545

 Home Sentry  Inc.                       5/87       LI
 P. 0.  Box 565
 Midland Park, NJ O7432

       Christopher Pedersen
       (201)  662-2497

 Home Sure Inspections,  Inc.            5/87               LI
 444  N. Frederick  Ave. STE L348
 Gaithersburg, MD   20877

       James  Scheible
       (301)  428-7672

 Home Testing Service                   5/87       LI
 7O Wabasso St.
 Waltham, MA  02154

      Steven D. Wightman
       (617)  862-3440

 Home-Tech Engineering                  5/87       LI
 P. 0. Box 43129
 51 Upper Monte lair Plaza
Upper Monte lair, NJ  07O43
      David  A. Osage
       (201)  744-6674

Hoosier Environmental                  5/87       LI
11116 Wood Court
Car-met, IN  46032

      Richard Jordan
       (317) 846-0227
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary company capable of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                             TABLE 2
                                                                 PERFORMANCE RESULTS OF COMPANIES
     * Company
                                    Date of       Radon     Working Level
                                     Round     Measurement    Measurement. QA
                                             AT  CC  CR  GR   GW  RP   CW Plan
                                                                      * Company
                                                                                                    Date of       Radon      Working Level
                                                                                                      Round     Measurement  :  Measurement  QA
                                                                                                              AT  CC  CR  GR   GW  RP  CW  Plan
Hudson Valley Radon Testing Corp.
P.O. Box 790
Poughkeepsie, NY  126O1

     Paul Costello, Robert Hare
     (914) 431-6424 (914) 485-6561

IL Dept. of Nuclear Safety
1035 Outer Park Drive
Springfield, IL 627O4

     Mslanie Anne Hame!
     (217) 785-9956
                   11/86
                    6/87
            LI
            LI
                    7/86       LI
                   11/86   LI  LI
                    5/87   LI  LI
                    LI
                    LI
     LI
     LI
LI
Infiltec
P.O. Box 1533
Falls Church, VA
22041

     David W. Saum
      (703) 820-7696
 Inspex of Boulder, Inc.
 2955 Valmont Street, Suite 300
 Boulder, CO 80301

     Kevin M. O'Hornett
      (303) 442-8995

 Insul-Tech, Inc.
 5559 Wester vi I le Road
 Westeville, OH  43081

     Danny R. West
      (614) 891-9555

 Integral Resources,  Inc.
 1916  East El  Parque
 Tempe, AZ  85282

      Jamas W. Krueger
      (602) 967-8O29
 7/86
11/86
 6/87
                    5/87
                               LI
                               LI
                               LI
                                                 LI
LI
LI
                   11/86
                    5/87
                    5/87   LI
            LI
            LI
JBK Inspection Service, Inc.
(The Bid. Inspector of America
225B CottrelI Road
Matawan, NJ  07747
      Barry Benevento
      (201) 525-9140

JRW Industries, Inc.
2312 North Second Street
Harrisburg, PA  17110

      James Wi11iams
      (717) 236-1418

K t J Solar Service
1142 FiIImore St.
Denver, CO  80206

      James VaI astro
      (303) 393-8372

KS Dept. of Health ft Environ.
Radiation Laboratory
Forbes  Bldg. 740
Topeka, KS 66620
      Dr. Dominic To
      (913) 862-936O ext  408

KSE, Inc.
P. 0. Box 368
Amherst, MA  01004

      Dr. Charles W. Quinlan
      (413) 549-5506

Key Technology, Inc.
P.O. Box 662
Jonestown, PA   17038

      Claude Wiblin
       (717) 274-8310
                                                                                                                         6/87
                                                                                                                                    LI
                                                                                                       6/87
                                                                                               LI
                                                                                                                         5/87
                                                                                                                                    LI
                                                                                                                         6/87       LI
                                                                                                                                                               X
                                                               11/86
                                                                6/87
                                                                                    4/86
                                                                                    7/86
                                                                                   11/86
                                                                                    6/87
                                                               LI
                                                               LI
                                                                            LI
                                                                            LI
                                                                           .Ul
                                                                            LI
                 * See TABLE 1 for the States each company serves.                                                         .               .
             Note: Underscored performance indicators denote a primary company capable of performing measurement analyses  in  house or making measurements
                   using operators and instruments belonging to the company.
                   See Definitions of  Performance Indicators on pages 5 and 6.

-------
                                                                                TABLE 2
                                                                    PERFO«aiANCE RESULTS OF COMPANIES
      * Company
Date of       Radon      Working Lovel
 Round     Measurement    Measurement  QA
         AT  CC  CR  GR   GW  RP  CW  Plan
                                                                                           * Company
                                                               Date of       Radon      Working Love I
                                                                Round     Measurement    Measurement  QA
                                                                        AT  CC  CR  GR   GW  RP  CW  Plan
 Lamson Homo Inspections
 9 Lougheed Avenue
 West CaIdwell, NJ 07006

      Wi11iam M. Lamson
   •   (201)  228-1862

 Lapteff Associates
 P.O.  Box  4160
 Woodbridge,  VA  22194

      Dr. Alexander Lapteff
      (703) 491-6700

 M.V.E., Inc.
 1911  Lelaray  Street
 Colorado Springs,  CO  8O9O9

  £  Mr. Kent Rockwell
      (303) 635-B736

 MIT/MIT Radon Project
 Building 26,  Rra #  421
 Cambridge, MA  O2139

     Professor Lea Grodziris
      (817) 253-4151

 MRC Home Inspections
 P. 0. Box 157
 Wyckoff, NJ 07481

     Henry H.  Doron
      (201)  891-7057

Madrona Divirsified,  Inc.
 1938 Fairview'Ave.  East
Seattle, WA 98102

     Dr; Samuel E.  Kelly
     (206)  324-O92O
  6/87       LI
 11/88       LI
  S/87       Ll
  5/87   Ll   Ll
 6/87       Ll
Ll
 5/87       Ll
 5/87       Ll
                                               Maine Public Health Laboratory        6/87       Ll
                                               Statehouse Station #12
                                               Augusta, ME  04333

                                                     Cheryl L. Baker
                                                     (207) 289-2727
                                                                            Ll
                                                                            LA
 Microbac Labs, Erie Testing Lab Div  11/86
 2411 W. 26th St.                      6/87
 Erie, PA  16506

       Jeffrey Ports
       (814)  833-4790
 Microbac Labs,  Hanover,  PA        •    6/87       Ll
 701  3rd. Street
 Hanover, PA 17331

       Ronald M.  Barber
       Not Installed Yet

 Microbac Labs,  MA Testing  Division     6/87       Ll
 202  Bussey  Street
 Dedham,  MA  02021 •

       Andrew W. Niemann
       (617)  326-7117

 Microbac Labs, New'Castle, PA          5/87        Ll
 R. D.  #3, Pulaski Road
 New Castle,  PA 16105

       Mary V. Wo Iford
       (412) 664-4212

Microbac Labs, Pittsburgh, PA         5/87       Ll
4580 McKnight Road
Pittsburgh, PA  15237

      William A. Larid
       (412)  931-5851
                f Soe TABLE 1 for the States each company serves'!'    '   ••"'"  "''                 "                                  ..--..,
            Note: Underscored performance indicators Denote a primary' company'capablo of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.                                                 "         max ing measurements
                  See Definitions of Performance Indicators on pages 5  and 6.

-------
                                                                             TABLE 2
                                                                 PERFORMANCE RESULTS OF COMPANIES
     * Company
                                   Date of  "-   ' Radon      Working Level
                                    Round •'   -Measurement    Measurement  QA
                                            AT  CC  CR  GR   CHI  RP  CW  Plan
                                    Date of
                                     Round
      * Company
             Radon
          Measurement
        AT  CC  CR  GR
- Work i ng LeveI
  Measurement  QA
  GW  RP  CW  Plan
Microbac Labs,  Schiller Div.          5/67       LI
449 Rochester Road
Pittsburgh, PA 16237-1733

     David J. Danis,  Lab  Director
     (412) 369-4830
Microbac Labs, Seaway Div             6/87
542-644 Conkey Street
Hammond, IN  46324
                                                LI
National Radon Control,  Inc.
P.O. Sox 6342
North Branch, NJ  08876

      David T. deNeufville
      (201) 231-O844

Natural Resource Technologies
32131 Steven Way
Conifer, CO 8O433
 4/86
 7/86
11/86
 6/87
                                                                                                                         6/87
      LI
      LI
      LI
      LA
                                                                                                                                    LI
Karen A. Erny
(219) 932-1770
NC Dept. of Human Resources
Radiation Protection Section
701 Barbour Drive
Raleigh, NC 27603-2008
on Harry J. Newman
(919) 733-4283
NJ DEP - Bureau of Env. Radiation
CN 411
Trenton, NJ 08625

Al Ian J. Dean
(609) 630-4001
NJ Dept of Environmental Protection
Environmental Laboratory
380 Scotch Road
Trenton, NJ 08628
Ms. Patricia Gardner
(609) 630-4116
NODAR, Inc.
Route 6 Box 333R
Athens, AL 35611
Wi 1 1 iam Young
(205) 729-1900


11/86
6/87


4/86
7/86
11/88
6/87


4/86
7/86
11/86
6/87


11/86
6/87 .





LI
LI


LI LI
LI- LI
LI LI
LI LI LI


LI
LI
LI
U


LI
LA



George H. Sylvester
(303) 860-9336
New England Radon, LTD. 11/86 LI X
373 Main St. 6/87 LA
Salem, NH O3079
Daniel Espinal
(6O3) 893-4260, (800) 637-2366
New York State Dept. of Health 6/87 LI
Radiological Sciences Lab
Empire State Plaza, Room D-366-B
Albany, NY 12201
Robert J. Mahoney
(618) 474-2134, (618) 474-6649
Niton Corporation 5/87 LI LI
P. 0. Box 9163
Lexington, MA 02173

James Wi 1 1 iams
(617) 229-4929
Northeast Radon Testing Svc., Inc. 5/87 LI
P. 0. Box 94
Stormville, NY 12582
Karen A. Bard
(914) 221-0236
                » See TABLE 1 for the States each company serves.                                                                        _
            Note: Underscored performance indicators denote a primary company capable of performing measurement analyses  in house  or  making measurements
                  using operators and instruments belonging to the company.                                                   •
                  See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
      *  Company
                Data of       Radon
                 Round     Measurement
                         AT  CC  CR  GR
            Working Level
             Measurement  QA
             GW  RP  CW  Plan
Northeastern PA Envir. Council
P. 0.  Box 3113
Scranton, PA 18505

     Edward Dructor
      (717) 961-1150

Nuclear Radiation Center
Washington State University
Pullman, WA 99164-1300
                  6/87
LI
                  5/87
LI
     Roy FiI by
     (509) 335-8917
(509)  335-8641
Nuclear Sources & Services Inc.
P. 0. Box 34042
Houston, TX  77234

  en Charles T. Gallagher
     (713) 641-0391
                 11/86       LI
                  5/87       LA
                                                                                         » Company
Phoenix Labs
L. Rorbes Road
Rout* 1, Box 247
Colebrook, NH  03576
      GiIbert McCarthy
      (603) 237-5773

Princeton Home Inspection Svc.
360 Nassau Street
Princeton, NJ  08540

      Clive Usiskin
      (609) 921-3775

Princeton Testing Laboratory
Princeton Service Center
3490 US Route 1
Princeton, NJ  08540
      Mr.  Anthony Damato
      (609)  462-2037
                                     Date of       Radon
                                      Round     Measurement
                                              AT  CC  CR  GR
                Working Level
                 Measurement  QA
                 GW RP  CW Plan
                                                                                                     6/87
                                                                                   LI
                                                                                                     6/87
                                                                                   LI
                                                                       11/86
                                                                        5/87
    LI
LI  LA
Nucleon Lectern Associates, Inc.
2919 Olney-Sandy Spring Road
Suite D
Olney, MD 20832
Michael S. Terpi lak
(301) 774-3301 "
0. K. Rems Corp.
174 Flock Rd.
Mercerville, NJ 08619
Jeffrey C. Olcott
(609) 588-9627
Oak R-idge Assoc. Universities
Professional Training Progress
P. 0. Box 117
Oak Ridge, TN 37831-0117
E Ibert Carl ton
(616) 576-5517
4/88
7/86
11/86
5/87


7/86
11/88
6/87


5/87

LI
LI
LI
LI LI LI LI


LI LI
LI LI
LI LI
•

LI

Protect-A-Home 6/87 LI
P. 0. Box 584
Newtown, CT 06470

B. Michael MeeKan
(203) 426-3000
Pylon Electronic Development 5/87 LI LI X
147 Colonnade Rd. — —
Nepean, Ont., Canada K2E7L9
Dave Hanneson
(613) 226-7920 j
Pyramid Environmental Systems, Inc. 7/86 LI
P. 0. Box 548 11/86 LT
Sparta, NJ 07871 6/87 LI
Jeffrey R. DeChacon
(201) 729-9375
               * Sea TABLE 1 for the States each company serves.
           Note: Underscored performance, indicators denote a primary company capable of performing raasurement analyses in house or making measurements
                 using operators and instruments belonging to the company.
                 See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                         TABLE 2
                                                             PERFORMANCE RESULTS OF COMPANIES
* Company
                               Date of  "    Radon
                                Round  '   Measurement
                                       AT  CC  CR  GR
Working Level
 Measurement  QA
 •' ,  RP  CW  Plan
      * Company
                                    Date, of        Radon
                                     Round      Measurement
                                              AT  CC   CR   GR
                                                                                                                                                Working Level
                                                                                                                                                 Measurement  QA
                                                                                                                                                 GW  RP  CW  Plan
R.A.D. Service ft Instruments Ltd.
50 Silver Star Blvd., Unit 208
Scarborough, Ontario M1V2W4
Canada
     Dr. H. L. Pai
     (416) 298-9200

R.J. Moore ft Associates, Inc.
1010 West Street
Annapolis, MD  21401

     Roderic E. Ordway
     (301) 269-5S50

RAD Environmental Services
2306 Rodeo Drive
Durham, NC 27704
  CO
     Dr. Marc Y. Menetrez
     (919) 688-9226

RADON Home Inspection Service
P.O. Box 65
Damascus, MD  20872

     Richard K. Jock
     (301) 253-0029

RADON SURVEY SYSTEMS, Inc.
Div. of Terradon Exploration Tech.
P. 0. Box 22288
Cleveland, OH  44122
     Dr. Darioush T. Ghahremani
     (216) 464-7997

RAF Engineering
Hillside Road
Rockaway, NJ 07866

     Ralph Favale
     (201) 983-9041
                                 7/86                        LI
                                11/86                        LI
                                 5/87                        LI
                                11/86   LI  LI
                                 5/87   LI  LI
                                 5/87   LI  LI  LI  LI   LI     JL1   X
                                11/86
                                 6/87
                                 6/87   LI  LI
 LI
 LI
                                 5/87   LI  LI
RISE                                  6/87        LI
280 Broadway
Providence, RI 02903

      John Masiello
      (401) 272-1040

Rad-Elec, Inc.                   .     6/87   LI   LI
124 North Barry Street
Olean, NY  14760

      John C. Dempsey
      (716) S4S-S012

Rod-Test, Inc.                        5/87        LI
P. 0. Box 22576
Louisville, KY  40222

      Jeffrey L. Tallent
      (502) 368-6996

Radiation Data                        5/87        LI
Div. Princeton Geophysical Svc
1200 State Road
Princeton, NJ 08640
      Thomas Van Leeuwen
      (609) 921-7061

Radiation Protection Services        11/86        LI
P. 0. Box 2395                        5/87        LI
Darien, CT  06820-1295

      Michael L. Caprio Jr.
      (203) 324-7967

Radiation Safety Associates, Inc.     6/87        LI
P. 0. Box 107
Hebron, CT  06248

      Paul Steinmeyer
      (203) 228-O487
           * See TABLE 1 for the States each company serves.
       Note: Underscored performance indicators denote a primary company capable of  performing measurement analyses in house or making measurements
             using operators and instruments belonging to the company.
             See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                                TABLE 2
                                                                    PERFORMANCE RESULTS OF COMPANIES
       * Company
  Radiation Safety  Engineering
  6105 South Ash, Suite 1
  Tempe,  AZ 85283

       Robert Metzger
       (602)  897-9469
 Radiation Safety Services, Inc.
 1564 Ashland Avenue
 Evanston, IL  60201-4070

      Radon Coordinator
      (312) 866-7744

.Radiation Service Organization
 P.O. Box 1526
 Laurel, MD  20707-7444

   LO Kai-Dee Chu
Date of
Round
1 11/86
6/87
Radon
Measurement
AT CC CR GR
LI
LI
Working Level
Measurement QA
GW RP CW Plan
X

* Company
Radiological Physics Services
Health East, Inc.
Date of
Round
5/87

Radon
Measurement
AT CC CR GR
Ll

Working Level
Measurement QA
GW RP CW Plan


 7/86
11/86
 5/87   Ll
             Ll
             Ll
             LA
   oo
      (301) 953-2482
 Radiation Services Inc.
 3412 Doriswood Ct.
 Antioch, TN  37O13

      Michael C. Bradshaw
      (615) 361-6492

 Radiation Surveys Incorporated
•63 Kingwood Ave.
 rVenchtown, NJ  08825

      Carolyn Davis
      (201) 996-3855

 Radioactivity Alert Detection Serv.
 1313 Roberts Ave.
 Feasterville, PA 19047

      Garry Stklovsky
      (215) 357-0574
 4/86
 7/86
11/86
 6/87
 5/87
Ll
Ll
Ll
Ll
        Ll
 7/86
11/86
 5/87       Ll
 6/87   Ll  Ll
        Ll
        Ll
        Ll
             Ll
         Ll   Ll
 P. 0. Box 13387
 Roanoke, VA  24033
       Joseph . Surace
       (703) 981-7379

 Radon A Environ. Professionals       11/86
 1902A Kentucky St.                    6/87
 Lawrence, KS  66044

       Linda Guinn
       (913) 749-7920 (316)  265-2005

 Radon Air Pollution Testing Co,  Inc   6/87   Ll  Ll
 1499 Lakeview Drive
 Mt.  Juliet, TN 27122

       Carlotta Bogart
       (615)  768-9392

 Radon Alert Detection Center
 P. 0.  Box 323
 Flourtown,  PA  19031

       Ulrich W.  Hiesinger,  Ph.D.
       (800)  345-6348 (215)  247-9197

 Radon  Ana lists,  Inc.
 P. 0.  Box 509
 Livingston Manor, NY 12758

       Vincent J. A. Santoro
       (914)  439-5111  (914) 292-2277

Radon Analysis Incorporated           7/86       Ll
RR#1 Box  561M Fox Run Road           11/86       Ll
StewartsviIle, NJ  08886              5/87   Ll  Ll

      David Chippendale
       (201) 479-6086
                                                                                    7/86       Ll
                                                                                   11/86       Ll
                                                                                    5/87   Ll  Ll
 7/86
11/86
 5/87
Ll
Ll
Ll
                 *  See TABLE 1  for  the States each  company serves. '     -•'
            Note:  Underscored  performance  indicators denote a  primary  company  capable of  performing measurement analyses  in  house or making measurements
                   using  operators  and  instruments  belonging to the.'company.
                   See Definitions  of Performance Indicators on pages 5 and 8.

-------
                                                                  •  ••  .  TABLE 2
                                                            -PERFORMANCE RESULTS OF COMPANIES
* Company
                              Date of    •   Radon
                               Round     Measurement
                                       AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
Company
Date of       Radon
 Round     Measurement
         AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
Radon Consultants, CO
P. 0. Box 789
Golden, CO 8402
Dennis N. Poffenroth
(303) 279-1358
Radon Consultants, Inc., VA
4012 N. 35th Street
Arlington, VA 22207
Dr. Jacquelyn G. Black
(703) 522-6669 (301) 736-7040
Radon Detection Services, Inc., GA
1729 Coventry Place
Decatur, GA 30030
cj Barrett Walker
^ (404) 377-2366
Radon Detection Services, Inc., MD
P. 0. Box 1195
Laurel, MD 20707
Tom Hoy
(301) 725-2901
Radon Detection Services, Inc., NJ
P.O. Box 419
Ringoes, NJ 08551
James G. Davidson
(201) 788-3080
Radon Detection Services, Inc., PA
P. 0. Box 3309
A lien town, PA 18106
Bruce E. Barker
(215) 481-9655
6/87 Ll Ll

11/86 Ll Ll
6/87 Ll Ll

11/86 Ll Ll X
5/87 Ll LA

11/86 Ll Ll Ll Ll Ll X
5/87 Ll LA Ll Ll Ll

4/86 Ll Ll Ll Ll X
7/86 Ll Ll Ll Ll
11/86 Ll Ll Ll Ll
6/87 LA LA Ll i-1
11/86 Ll Ll Ll Ll X
6/87 Ll Ll LJ. Ll
Radon Detection Specialists 11/86 Ll X
7966 South Madison Street 6/87 Ll
Burr Ridge, IL 60521 '
Karl Weber
(312) 325-4443
Radon Detection Systems Inc., OH 5/87 Ll
P. 0. Box 473
Aurora, OH 44202
Sandra Sawyer
(216) S62-4647
Radon Detection Systems of TN 5/87 Ll Ll LJ.
3102 Bel (wood Ave. Suite B
Nashville, TN 37203
Walter Perkins / Odom Clark
(615) 269-4616
Radon Detection Systems, CO 7/86 Ll Ll
2300 Central Avenue Suite B-l 11/86 Ll Ll Ll
Boulder, CO 8O301 5/87 Ll Ll LJ.
Tim Smith
(303) 444-6253
Radon Detection and Control 5/87 Ll
P. 0. Box 222
Georgetown, PA 15043
John B. Mai Ion Jr.
(412) 573-0202
Radon Detection, Inc. 5/87 LJ.
131 Amherst Street
P. 0. Box 900
Amherst, NH 03031-0900
Luc i an Borduz
(803) 882-7340
           * See TABLE 1  for the States each company serves.
       Note: Underscored  performance  indicators denote a primary company capable of performing measurement analyses  in  house  or  making measurements
             using  operators and instruments belonging to the company.
             See Definitions of Performance Indicators on pages 5 and 6.

-------
                                                                               TABLE 2
                                                                   PERFORMANCE RESULTS OF COMPANIES
      * Company
                                    Date of       Radon
                                     Round     Measurement
                                             AT  CC  CR  GR
                                                              Working Level
                                                               Measurement  QA
                                                               GW  RP  CW Plan
 Radon Diagnostics                     5/87       LI
 Box 761
 Andover,  NJ 07821

      Charles R. Wayne,  Jr.
      (201)  729-1261
Radon Engineering Services Inc        5/87
3129 Overton Rd.
Birmingham, AL  35223

     Dr. F. Mi Iton Jessup, P.E.
     (205) 967-2665
                                                  LI
 4/86
 7/86
11/86
 5/87
                                      5/87
Radon Engr, a Unit of PSI Engr, Inc
One Lethbridge Plaza
Mahwah, NJ  07430
  .p> Harvey Greenberg, P.E.
  0 (201) 529-8300
Radon Env. Test Experts, Inc.
5271 Holmes PI.
Boulder, CO  80303

     David Oppenheimer
     (303) 442-2344
Radon Environ. Monitoring, Inc        5/87   Ll
Box 5305
Evanston, IL 6O2O4

     Robert Pol lock
     (312) 328-6628

Radon Gasbusters                     11/86
513 Lyons Avenue                      5/87
Irvington, NJ  07111

     Michael Keilison
     (201) 375-3710
Ll  Ll
Ll  Ll
Ll  Ll
Ll  Ll
                                                                      LI
                                                                      LI
                                                                      Li
                                                                      LI
                                                 LI
                                                                      LI
                                                                      LI
                                                                                         * Company
                                     Date of       Radon      Working Level
                                      Round     Measurement    Measurement  QA
                                              AT  CC  CR  GR   GW  RP  CW  Plan
 Radon Inspection Service
 789 East Glen Avenue
 Ridgawood,  NJ 07450

       Robert D.  Shumeyko
       <201)  670-8821

 Radon Management Company
 4332 Gingham Court
 Alexandria,  VA  22310

       Gordon M.  Davidson
       (202)  547-1005 (703)  960-4407

 Radon Management Laboratories
 2 Riverdale  Road
 Pompton Lakes, NJ 07442

       James  Matonti,  Joseph Fastiggi
       (201)  835-8721

 Radon Measurement ft Control
 7935  Ki(bourne Rd.
 Sunbury, OH  43074

       John R. Hunt
       (614)  866-1197

Radon  Measurement and Control
of New Mexico
1527 Granite St. NW
Albuquerque, NM 87104
      Dr. William M. Turner
       (505) 843-7305

Radon Measurement and Services
13131 West Cedar Drive
Lakewood, CO  80228

      R.  Stanley Thompson
       (303)  980-6088
                                                                                                                         4/86       LI           U
                                                                                                                         7/86   LI  Ll      LI   ,L1
                                                                                                                        11/88   Ll  Ll      Ll   Ll
                                                                                                                         6/87   Ll  Ll  Ll  Ll   Ll
                                                                                                                        11/86
                                                                                                                         5/87
                                                                                                                         5/87
                                                                                                                                     Ll
                                                                                                                                     Ll
                                                                                                                                    Ll
                                                                                                                                                 Ll  Ll
                                                                                                                        11/86
                                                                                                                         5/87
                                                                                                                         5/87   Ll
                                                                                                                                    U
                                                                                                                                    LA
                                                                                                                        4/86   Ll
                                                                                                                        7/86   Ll
                                                                                                                        11/86   Ll  Ll
                                                                                                                        5/87   Ll  LA
                                                                                                                                            Ll   Ll
              .  * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary  company capable of  performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of Performance Indicators on pages 6 and 6.

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                                                                             TABLE 2
                                                                  PERFORMANCE RESULTS  OF COMPANIES
     * Company
                                    Date of   ,  .  Radon
                                     Round     Measurement
                                             AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
                                     Date of
                                      Round
      * Company
     Radon
  Measurement
AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
Radon Measurements Inc.               5/87   LI  LI
2916 West T. C. Jester
Houston, TX 77018

     John H. Cohen
     (713) 683-8227

Radon Mitigators, Inc.                5/87       LI
16 Hillside Drive
Clinton, NJ  08809

     Lawrence K. Kaplan
     (201) 730-6596

Radon Project, The                    S/87       LI
P. 0. Box 90069
Pittsburgh, PA  15224

  £.,  Bernard L. Cohen
  •-  (412) 687-3393

Radon Registry                        5/87       LI
819 Second St. B-178
Manchester, NH 03102

     Tom Roller
     (603) 645-6780

Radon Research Group                  7/86   LI
P.O.  Box 1143                        11/86   LI
Germantown, MD  20874                 5/87   LI

     Michael J. Myers
     800/445-8436, MD 800/644-8436

Radon Safety Services, Inc.            7/86
Box 441                              11/86
New Providence, NJ  07974             5/87       LI

     Guy J. Agrati
     (201) 826-8267 (201) 665-1188
     LI   LI
     LI   LI
     LI   LI
                      Radon Screening Service, Inc.         6/87   LI  LI
                      P.  0. Box 37007
                      Denver,  CO 80237

                            Thomas Staley
                            (303) 741-3207

                      Radon Surveys,  Div. Alpha Tech Corp  11/86
                      2205 13th Street                      6/87
                      Winthrop Harbor, IL  60096

                            Steven P. Ray
                            (312) 872-3663

                      Radon Surveys,  Div. Cope Tech Svcs    6/87       LI
                      3506 87th PI.
                      Kenosha, WI  63142

                            James L.  Cope
                            (414) 694-3730

                      Radon TNT                            11/86
                      1015 Beta Loop                         6/87       LI
                      Colorado Springs,  CO 80906

                            Richard Cole
                            (303) 520-6693
                                                               LI
                                                               LI
                                                               LI
                                                               LI
                                                            5/87   LI  LI      LI
Radon Technologies Inc.
39 Woodrow Court
Troy, NY 12180

      Robert J. Mahoney
      (518) 447-5834
Radon Testing Corp. of America RTCA   7/86       LI
12 W. Main Street                     11/88       LI
Elmsford, NY  10523                    5/87       LI

      Nancy A. Bredhoff
      800/457-2366, 800/537-7822 -NY
                * See TABLE 1 for the States  each company serves.
            Note: Underscored performance indicators denote a primary company capable of performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.
                  See Definitions of  Performance Indicators on pages 5 and 6.

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                                                                              TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
     * Company
                                    Date of       Radon
                                     Round     Measurement
                                             AT  CC  CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
                   * Company
                                    Date of       Radon      Working Level
                                     Round     Measurement    Measurement  QA
                                             AT  CC  CR  GR   GW RP  CW Plan
Radon Testing Svc, Englewood, CO      6/87       LI
P. 0. Box 1130
Englewood, CO 80110

  •   David L. Eg Iaston, Jr.
  -   (303) 762-8598

Radon Testing Svc, Pittsburgh, PA    11/86       LI
P. 0. Box 19425                       5/87       LI
Pittsburgh, PA  15213

     Mark Johnson
     (412) 687-1533

Radon Testing Svcs, Baltimore, MO     5/87       LI
P. 0. Box 7999
Baltimore, MD 21221-0999

  ^  Laurence V. Kolego
  ^  (3O1) 321-8008

Radon Testing Svcs, Princeton, NJ     5/87       LI
P. 0. Box 3311
Princeton, NJ  08543

     Rodney T. Mi Iler
     (609) 737-8818

Radon X Company, Inc., The            5/87
217 Roxbury Street
Keene, NH  03431

     David P. Tkatch
     (603) 352-5319

Radonics, Inc.                       11/86   LI  LI
(Div. of Gemini Research)             5/87   LI  LI
5101-D Back lick Road
Annandale, VA  22003
     Brian P. Fimian
     703/941-O07O  800/8-RADON-O
 LI
 LI
 LI
 LA
LI   X
LA
Radon ix                               5/87       LI
34 Dogwood Lan«
Middletown, PA  17057

      Edward V. Kellogg
      (717) 944-5520

Rain Exterminators                     5/87       LI
97 Frank St.
Somerset, NJ 06873

      James R. Savage
      (201) 937-6900

Real Estate Support Services         11/86       LI
7901 Flying Cloud Drive, #132         5/87       LI
Eden Prairie, MN  55344

      Julie Steen
      (612) 941-7558

Recon Systems, Inc.                   7/86   LI
P.O. Box 460                         11/86   LI  LI
Three Bridges, NJ  O8887              5/87   LI  LI

      Peter L. Rosen
      (2O1) 782-6900

Res-I-Tec                             6/87       LI
94 LimkiIn  Road
Redding, CT 06896

      Ron Passaro
      (203) 938-9811

Residential Radon Measurements        6/87   LI  LI
P. 0. Box 3051
Fairview Heights, IL 62208

      Todd A. Jokerst
      (618) 397-0099
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary  company capable of performing measurement analyses  in  house or making measurements
                  using operators and instruments belonging to the company.    :
                  See Definitions of Performance Indicators on pages 5 and 6.

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                                                                 •  •'•   •       TABLE 2
                                                                  PERFORMANCE RESULTS OF COMPANIES
     * Company
                                    Date of       Radon
                                   .  Round..-.. -Measurement
                                             AT  CC  CR  GR
    Working Level
     Measurement  QA
     GW  RP  CW  Plan
                   * Company
                                                 Date of        Radon
                                                  Round     Measurement
                                                          AT  CC   CR  GR
Working Level
 Measurement  QA
 GW  RP  CW  Plan
Residential Radon Test Service 6/87
126 Old Oaken
Scituate, MA

Bucket Raod
O2068

LI Ross Systems, Inc.
174 Route 94
Blairstown, NJ 07825

4/86
7/86
11/86
B/87
LI
LI
LI
LI
LI
LI
LI
LI
LI
LI
LI
LI



LI
     Jim Wood
     (617) 645-9160

Reynolds Radiological Services, Inc   7/86
RD 1 Box 271-5                       11/86
Bainbridge, PA  17502                 5/87

     H. W. Reynolds
     (717) 653-9366 (717) 367-7829

Roberts Environmental Services       11/88               LI
4110 Old Wake Forest Road             5/87   LI  LI  U.  LI
Suite 109
Raleigh, NC  27609
  .p, Glenn David Osmond
  00 (919) 790-9378

Rocky Mountain Radon Testing          5/87       LI
6820 S. Brook Forest Dr.
Evergreen, CO  8O439

     Duane A. Riggenbach
     (303) 674-7029
     LI
             LI
             LI
             LI
LI
LI
Rogers ft Assoc. Engineering Corp.     7/86       LI
515 East 4500 South, Suite G-200     11/86   LI  NL
Salt Lake City, UT  84107             6/87   LI  LI

     Dr. Kirk X. Nielson
     (801) 263-1600

Ronald Stein Construction Inc.       .5/87   LI  LI
21 Davis Ave.
Poughkeepsie, NY 12603

    - Ronald Stein
     (914) 473-0064
LI
LI
      Richard Ross
      (201)-364-6571

Roy F. Weston, Inc.                   11/86
One Weston Way (Bldg. 4-2)             5/87
West Chester, PA  19380

      Jean-Claude F. Dehmel
      (216) 692^3030 ext 2746

Ryan Nuclear Laboratories              5/87     •  LI
7030 D Hunt ley Rd                             -'
Columbus, OH  43229

      Wayne Ballantyne
      (614) 848-4414

S. C. Dept of Health A  Env Control     5/87       LI
Bureau of Radiological  Health
J. Marion Sims Bldg.
Columbia, SC  29201
      Nolan Bivens
      (803) 734-4700

Safe ft Sound Home Inspect. Con         5/87       LI
P. 0. Box 195
Cedar Knolls, NJ 07927

      Steven W. Freedman
      (201) 515-0013

Safe Air                               5/87       LI
P. 0. Box 120064
Nashville,  TN  37115

      Carolyn Tompkins  .
      (615) 865-6325
                                                                       LI
                                                                       LI
 LI
 LI
                * See TABLE 1 for the States each company serves.
            Note: Underscored performance indicators denote a primary  company capable of  performing measurement analyses in house or making measurements
                  using operators and instruments belonging to the company.         . •
                  See Definitions of  Performance Indicators on pages 5 and 6.

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