Dallas Jones, AARST-NRPP Executive Director

 The current NRPP Radon Measurement Professional and Mitigation Professional certification exams will be retired on April 30th. Additionally, as of May 1st, the Radon Mitigation Professional designation will be officially referred to as “Radon Mitigation Specialist.” 

These new Radon Measurement Professional and Radon Mitigation Specialist exams will cover content that includes domains and subdomains for the Measurement Field Technician and Mitigation Installer designations that will be rolled out in August 2021.  

Exam References

The difference in the new exams is their focus on the relevant ANSI-AARST Standards. 

Candidates for the Measurement Professional Exam must be very familiar with both the ANSI/AARST MAH-2019 Protocol for Conducting Measurements of Radon and Radon Decay Products in Homes and MS-QA-2019 Radon Measurement Systems Quality Assurance.

Candidates for the Mitigation Specialist Exam must be familiar with both the ANSI/AARST SGM-SF-2017 Soil Gas Mitigation Standards for Existing Homes and MAH-2019 Protocol for Conducting Measurements of Radon and Radon Decay Products in Homes.

These ANSI-AARST Radon Standards can be purchased at https://standards.aarst.org or ANSI Webstore.

The new NRPP Study Guides and Flashcards will be available by April 15th at https://aarst.org/candidates/.

Exam Domains

The Measurement Professional Exam will include the domains for the Measurement Field Technician credential to come. Likewise, the Mitigation Specialist Exam will include the domains for Mitigation Installer. Below are the domains and subdomains for each of the four designations

MEASUREMENT FIELD TECHNICIAN:  

Domain 1: Communicate with the Client 17%
1.1     Communication basic radon risks 7
1.2     Explain required test protocols 8

 

Domain 2: Evaluate the Test Site 24%
2.1     Determine appropriate test protocol 8
2.2     Recognize factors that could impact test results 7
2.3     Inspect existing mitigation system 5

 

Domain 3: Perform the Test 28%
3.1     Determine proper device placement location(s) 13
3.2     Execute field quality control measures 11

 

Domain 4: Keep Records 14%
4.1     Record radon test data 6
4.2     Record site data necessary for test interpretation 6

 

Domain 5: Operate in an Ethical/Professional Manner 17%
5.1     Comply with protocols and standards 8
5.2     Observe ethical work practices 6

 

MEASUREMENT PROFESSIONAL: 

Domain 1: Communicate Basic Radon Science 18%
1.1     Communicate health risk 4
1.2     Communicate radon entry behavior 3
1.3     Recommend testing approach 5

Domain 2: Conduct and Validate Measurement Data 25%
2.1     Select appropriate test device(s) 5
2.2     Assess radon measurement data 7
2.3     Interpret site data 5

 

Domain 3: Report Findings and Make Recommendations 21%
3.1     Prepare a proper test report 5
3.2     Make follow-up recommendations 4
3.3     Report site factors affecting radon results 4

 

Domain 4: Manage QA/QC Program 19%
4.1    Develop QA plan and SOPs 6
4.2    Execute QA plans 6

  

Domain 5: Oversee and Train Measurement Techs 17%
5.1    Determine work exposure 3
5.2    Provide tech oversight 8

 

MITIGATION INSTALLER: 

Domain 1: Communicate with the Client

14%

1.1    Explain basic radon risk as per EPA documents 4
1.2    Describe radon entry behavior 4
1.3    Describe work scope and potential hazards 4

 

Domain 2: Identify Radon Entry Points

17%
2.1    Identify and record construction characteristics 5
2.2   Identify radon pathways 5
2.3   Identify driving forces 4

Domain 3: Maintain Jobsite Safety

15%

3.1     Identify jobsite hazards 6
3.2     Implement jobsite safety measures 7

 

Domain 4: Implement Mitigation Installation Strategy

30%

4.1     Install sub-membrane system 4
4.2    Apply ASD to existing water drainage systems 3
4.3    Install sub-slab system 4
4.4    Install radon fan and vent piping 4
4.5    Seal foundation openings to improve ASD 4
4.6    Apply ASD to multiple foundations and types 3
4.7    Install ASD in new home construction 3

 

Domain 5: Perform Post-Installation Tasks

16%

5.1     Characterize the system 7
5.2     Provide information to homeowner 7

  

Domain 6: Operate in an Ethical and Professional Manner

8%

6.1     Sustain ethical approach to clients 4
6.2     Sustain ethical approaches in business 3

 

MITIGATION SPECIALIST:

Domain 1: Communicate Basic Radon Science 10%
1.1    Communicate health risk (employee and client) 3
1.2    Communicate radon entry behavior 3

Domain 2: Evaluate Pre-Mitigation Measurement 9%
2.1     Evaluate pre-mitigation tests and perform diagnostics 6

Domain 3: Design Radon Mitigation System 24%
3.1    Design sub-slab depressurization system 3
3.2    Design sub-membrane depressurization system 2
3.3    Design crawlspace depressurization system 2
3.4    Design ASD connected to drainage system 3
3.5    Design fan and piping system 3
3.6    Design soil pressurization system 1
3.7    Design block wall depressurization systems 1
3.8   Design residential mitigation systems in new construction 1

 

Domain 4: Validate Post-Installation Data 10%
4.1    Ensure post-mitigation radon test is performed to verify effectiveness 2
4.2    Conduct PPE and airflow tests to verify performance 3
4.3    Construct OM&M plan 2

 

Domain 5: Troubleshooting System Problems / Implement Corrective Actions 17%
5.1    Identify airflow and PPE limitations 4
5.2   Review hourly radon data for failure caused by external conditions 3
5.3    Identify untreated foundation areas as contributing radon sources 4

 

Domain 6: Develop / Maintain Worker Health and Safety Plan 9%
6.1    Establish radon exposure plan 3
6.2    Develop and implement jobsite safety plan 3

 

Domain 7: Maintain Mitigation Quality AssurancePlan

10%
7.1    Maintain job installation records 4
7.2    Maintain employee records 3
7.3    Manage staff training 3

 

Domain 8: Operate in an Ethical/Professional Manner

8%
8.1    Sustain ethical approach to clients 4
8.2    Sustain ethical approaches in business 4