Notwithstanding other requirements of law, as soon as any person responsible for any premises, facility or operation, or responsible for emergency response for a facility or operation has information of any known or suspected release of materials which are resulting or may result in illegal discharges or pollutants discharging into stormwater, the municipal separate storm sewer system, or other watercourses, said person shall take all necessary steps to ensure the discovery, containment, and cleanup of such release. In the event of such a release of hazardous materials said person shall immediately notify emergency response agencies of the occurrence via emergency dispatch services. In the event of a release of non-hazardous materials, said person shall notify the city or its appointed agent in person or by phone no later than twenty-four hours. Notifications in person or by phone shall be confirmed by written notice addressed and mailed to the city at City of Columbus, City Engineer's Office, 123 Washington Street, Columbus, IN 47201, within five calendar days of the phone or in person notice. If the discharge of prohibited materials emanates from a commercial or industrial establishment, the owner or operator of such establishment shall also retain an on-site written record of the discharge and the actions taken to prevent its recurrence. Such records shall be retained for at least three years. (Ord. 08-26, 2008; Ord. 06-11, 2006)