What is defined as a Letter of Warning for oil spills?

A Letter of Warning for oil spills is applicable under specific criteria regarding the quantity of oil released. The proper definition encompasses both instances where less than 25 gallons of oil are released for commercial purposes and less than 50 gallons for recreational purposes.

This means that if an oil spill falls within these thresholds, it will typically result in a Letter of Warning rather than a more severe enforcement action. Such warnings emphasize the importance of compliance and awareness of environmental regulations related to oil spills and serve as a precursor to more serious measures if violations continue. The presence of both thresholds in the correct answer highlights the regulatory approach to managing smaller spills differently based on their context, ensuring that commercial and recreational activities are monitored appropriately without imposing excessive penalties for minor incidents.