'CAFO issued 9/24/2002, assessing a penalty of $750. Respondent shall make payment within thirty days. Respondent failed to use a properly trained and certified technician while performing service for consideration involving the refrigerant of an MVAC system. Respondent did not provide all of the service invoices requested in the ? 114 information request letter. Respondent failed to respond completely to all of the 114 questions.'