RMS Quality & Compliance Flashcards

Which ASTM standard is most relevant to radon mitigation system installation practices?

Answer: ASTM E2121

ASTM E2121 is the standard practice for installing radon mitigation systems in existing low-rise residential buildings.

When an RMS discovers an active sump pump pit during a pre-mitigation inspection, what is the primary compliance concern?

Answer: The pit can be a major radon entry pathway requiring sealing or special treatment

Sump pits communicate directly with the sub-slab environment and must be addressed to prevent them from bypassing the mitigation system.

Which labeling requirement must be met for a properly installed radon mitigation system according to EPA standards of practice?

Answer: All system components must be labeled with the installation date and contractor contact information

EPA standards require durable labeling on system components with installation date, contractor information, and a caution about system modification.

A state radon program audit reveals an RMS installed a system without obtaining the required building permit. What is the most likely consequence?

Answer: Potential license suspension and requirement to obtain retroactive permits

Operating without required permits can lead to license suspension, fines, and remediation requirements under state contractor law.

What is the purpose of a pressure field extension (PFE) test during a pre-mitigation diagnostic?

Answer: To determine how far negative pressure extends under the slab from a suction point

The PFE test uses a vacuum and manometer to map how far suction can communicate under the slab, guiding pipe placement decisions.

A real estate transaction requires a radon test to be conducted under closed-house conditions. What does 'closed-house conditions' mean?

Answer: Windows and doors kept closed except for normal entry/exit for at least 12 hours before and during testing

Closed-house conditions standardize the test environment by limiting air exchange that could dilute radon and skew results.

Under NRPP quality assurance requirements, how should an RMS handle a situation where a post-mitigation test device is returned tampered?

Answer: Invalidate the test and retest with a new device under monitored conditions

Tampered test devices produce unreliable results; the test must be invalidated and rerun to ensure measurement integrity.