Except as specified in Section 4356, after each inspection, the commission shall furnish the operator, or a representative designated in writing by the operator, with a written copy of the inspection report within 30 days of the inspection, and the report shall indicate any violations of applicable federal or state pipeline safety laws or regulations. Upon receipt of a report indicating a safety violation, the operator shall file, within 30 days, a written response with the commission which acknowledges receipt of the report and specifies a

compliance plan for correcting the safety violations, including, if appropriate, a timetable for completing necessary repairs or improvements to the distribution system. The commission shall furnish copies of inspection reports indicating safety violations, and responses to these reports, to the United States Department of Transportation and to the department.