Tariffs. A utility shall have its tariff on file with the Commission in accordance with the regulations governing the filing of tariffs. A utility shall post its tariff and pending tariff changes on its website. After Commission acceptance of a tariff change, a utility shall update the tariff posted on its website not later than 3 business days after the date of acceptance. Annual and Quarterly Reports. Each utility shall file with the Commission appropriate quarterly and annual reports showing information concerning the utility's operation, financial position, and other miscellaneous information as required by these regulations. Fatal Accident Notice. In the event of a fatal accident, prompt notice shall be given to the Commission by telephone. A written report shall follow within 10 days of the accident. Quarterly Accident Report. Each utility shall file with the Commission a disabling injury accident report, on forms provided by the Commission, within 30 days after the end of any quarter.