About: The Office of Air Resources recently issued a public notice for public comment and public hearing for the proposed draft Air Pollution Control Regulation No. 50 “Clean Diesel Fund” (260-RICR-120-00-50). The regulation was developed pursuant to Rhode Island General Laws that established the Rhode Island Clean Diesel Fund. The fund was created to enable the state Department of Environmental Management (DEM) to receive annually appropriated money and provide reimbursement grants to companies for the purpose of reducing emissions from heavy-duty diesel vehicles and improving supply-chain efficiency. DEM will solicit projects that undertake eligible clean-diesel measures and award grants from the fund to reimburse applicants for undertaking these measures. DEM encourages the submission of written comments. The e-mail address for comments is email@example.com.