National Aeronautics and Space Administration
National Aeronautics and Space Administration's Categorical Exclusions (opens in new tab)Categorical Exclusion
(3) Research, Development, and Science Activities including:
Exclusion Text
(ii) Use of small quantities of radioactive materials used for instrument detectors, calibration, and other purposes. Materials may be associated with the proposed use on spacecraft, aircraft (including unmanned aircraft systems), sounding rockets, balloons, laboratories, watercraft, or other outdoor activities.
Disclaimer
This CE Explorer tool is not an authoritative source and creates no rights or obligations. When using the CE Explorer Tool, Federal agencies and stakeholders should review the relevant agency's NEPA procedures for information about how to apply the CE, including any limitations or potential extraordinary circumstances, and to ensure that a CE is current and applicable to a given proposed action. For ease of use, a link to each agency's NEPA procedures and CEs is provided along with the text of the CE. To adopt and use another agency's categorical exclusion, an agency must follow the steps described in section 109 of NEPA, 42 U.S.C. 4336c.
