Environmental Review Toolkit
https://www.environment.fhwa.dot.gov/NEPA/QAimpact.aspxThe CEQ regulations (40 CFR §§ 1500 -1508) define the impacts and effects that must be addressed and considered by Federal agencies in satisfying the requirements of the NEPA process. This includes direct, indirect and cumulative impacts: Direct effectsare caused by the action and occur at the same time and place. (40 CFR § 1508.8)