700 430 ffffff false ffffff Arial 13 000000 2 multiplechoice false Contract false That is incorrect. Certified Letter false That is incorrect. BOA true Yes, that is correct. None of the above false That is incorrect. Sorry. That is incorrect. The correct answer is C. A Basic Ordering Agreement (BOA) is a written instrument of understanding between EPA and an ERLN/WLA Member laboratory. For federal incidents, ERLN/WLA laboratories have established BOAs with EPA and may be paid by EPA for their services.