Docket No. 4588 - Narragansett Bay Commission (NBC) - Filing to Change Terms and Conditions (filed 11/13/15) Status of Docket: Closed. NBC's Tariff Filing to change the method NBC calculates customer abatements. Under abatement terms, a property owner may apply for an adjustment to the water consumption used in the calculation charge if they believe that more than fifteen percent (15%) of the source water does not discharge into the sewer system. Division of Public Utilities and Carriers' Memorandum (12/8/15) PUC Order No. 22306 approving Narragansett Bay Commission’s tariff advice filing to modify its existing Terms and Conditions Service Fee Schedule. Written Order issued 1/19/16.