Notwithstanding other requirements of law, as soon as any person
responsible for a 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 the MS4, 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 nonhazardous materials, said person shall notify
the municipality in person or by telephone or facsimile no later than
the next business day. Notifications in person or by telephone shall
be confirmed by written notice addressed and mailed to the municipality
within three business days of the telephone 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.