Each City unit shall develop criteria to govern those costs and expenses incurred by the unit as a result of assistance at hazardous material incidents which shall be reimbursable. Each City unit shall submit an itemized account of all reimbursable costs and expenses incurred as a result of the unit's assistance at a hazardous material incident to the owner or other person as the responsible party proximately causing a hazardous material incident. The owner or other person proximately causing a hazardous material incident shall be jointly and severally liable for reimbursement of all City costs and expenses incurred as a result of assistance or emergency response to a hazardous material incident. Upon the failure or refusal of any person to reimburse the City as provided herein, each City department shall refer the matter to the Office of the City Attorney for collection or other appropriate disposition. (Ord. 80-430; Ord. 87-27; Ord. 01-42)