Passing Compost Facility Operators Exam is required to become certified as a Compost Facility Operator. Individuals who want to take the exam must register with Phil Davidson, Registration Supervisor, at (410) 841-2721 or philip.davidson@maryland.gov. 

The State of Maryland regulates the commercial composting process to ensure that the finished product will benefit plants and customers as intended. Those products are registered with the department’s State Chemist as soil conditioners or composts. Individuals who are composting materials to be sold or distributed must demonstrate their competency by passing an exam and becoming certified.