Base rates can include which of the following costs?

Base rates typically refer to the foundational costs that are essential for the basic operation and maintenance of an airport. These costs usually include various operational expenses that a facility incurs on a regular basis.

The inclusion of the cost of environmental assessments as a base rate is particularly relevant because these assessments are a critical component of regulatory compliance and ongoing operational sustainability for airports. They help ensure that the facility meets environmental standards and guidelines, which can affect not only operational procedures but also overall financial planning and resource allocation.

In contrast, advertising expenses are typically variable costs aimed at promoting the airport, airport manager salaries, while important, relate more to personnel costs rather than foundational operational costs, and catering costs are associated with passenger services and thus fall more into the category of operational expenditures rather than base rates.