Pacific Northwest Site Office CX Determinations

Determination Date Name of Action: Description Categorical Exclusion Number
5/29/2025 Generic CX for Aviation Activities B3.2
5/29/2025 Generic CX for Facility Safety and Environmental Improvements B2.5
5/29/2025 Generic CX for General Agency Actions A.1, A.8, A.9, A.11, A.12, A.14
5/14/2025 Project Specific Categorical Exclusion for Atmospheric Radiation Measurement Aircraft Operation B3.2
4/25/2025 Generic Categorical Exclusion for Installation, Maintenance, Testing, and Calibration of Equipment B1.31, B2.2, B2.4
4/2/2025 Generic Categorical Exclusion For Transfer Actions B1.13
7/30/2024 Project Specific Categorical Exclusion for the Evaluation Of Spent Nuclear Fuel B3.6
4/9/2024 Generic Categorical Exclusion for Research Activities in Aquatic Environments B3.16
4/9/2024 Generic Categorical Exclusion for Small-Scale Renewable Energy Research and Development and Pilot Projects in Aquatic Environments B5.25
4/9/2024 Generic Categorical Exclusion for Site Characterization and Terrestrial Research B3.1, B3.8