C. Exceptions to a Radon Report :

1. A Radon Professional may conclude that testing or mitigation is not necessary based on exemptions laid out in the relevant state or ANSI-AARST radon standard. Any such justifications as to why testing or mitigation is not necessary must be provided in the Environmental Report in the form of a signed letter from the radon professional that references the appropriate standard. Housing staff will determine whether to grant the exception.

2. A radon report is not required for applications that are categorically excluded not subject to the laws and authorities at 50.4 (CENST) as per 24 CFR 50.19(b)(21) (see Section 9.1.3.C.1 and Section 9.1.3.C.2).

However, applicants are encouraged to test for radon even at the CENST level of review. Any such testing must follow the testing protocols and resident notification protocols below and must then be incorporated within a radon report as described within this section. If the results of such testing indicate levels of radon at or above the threshold for unacceptability, mitigation as described in this section is required, following Section 9.6.3.2.F.