Major category
Major category - A processing or monitoring category requiring more than 50 hours of agency time to process an application for a special use authorization (processing category 6 and, in certain situations, processing category 5) or more than 50 hours of agency time to monitor compliance with the terms and conditions of an authorization (monitoring category 6 and, in certain situations, monitoring category 5). Major categories usually require documentation of environmental and associated impacts in an environmental assessment and may require an environmental impact statement.