Chapter 18 - Hazardous Substances and Facilities substances themselves. This risk assessment will be based on the combined assessment of the hazard of a substance, its physical form and the manner in which it is used or stored. Zoning Zones will appropriately locate activities involving similar levels of risk associated with the use and storage of hazardous substances. Zone based rules define threshold levels for hazardous substance risk and require all hazardous facilities that are permitted activities to comply with performance standards. Rules The Hazardous Facility Screening Procedure will be used to assess the risk of an activity or facility and take into account risks associated with the transport of hazardous substances to determine whether the proposal will be permitted or require a consent. The Council will monitor existing facilities to ensure compliance with other relevant legislation. Existing facilities will be subjected to the Hazardous Facility Screening Procedure when they expand or alter their operations. Where it is considered that an existing facility is operating at a level of risk which has or may have a significant adverse effect on the environment, the Council will consider using its enforcement powers under the Act. Resource consents will impose conditions, as appropriate, to take into account relevant standards and Codes of Practice as part of the Hazardous Facility Screening Procedure. Site management plans may be required as a condition of consent. Such plans will put in place measures to reduce the likelihood of accidents occurring while spill contingency or other emergency plans allow the facilitation of efficient and well co-ordinated responses to any accidents. This Plan requires all hazardous facilities that either exceed the threshold effects ratio for the zone or fail to meet the permitted performance standards to be considered as Discretionary Activities. Monitoring The Council will maintain a list of all consented users of hazardous substances and facilities as part of the Hazardous Facility Screening Procedure and will monitor changes to their operations or facilities that may pose an increased risk to the environment or community health. The Council will monitor compliance with HASNO and carry out enforcement functions. The Council will monitor hazardous facilities to determine the cumulative effects of activities and ensure they do not create adverse environmental effects or reduce community health. Agency The Council will co-operate with the Land Transport Safety Co-operation Authority, NZ. Police, and Department of Labour to monitor the movement of hazardous substances and to ensure that transportation of hazardous substances is undertaken in a safe and efficient manner. The Council will act as a local coordinating body for agencies responsible for legislation, guidelines and codes of practice, to ensure that effective management of hazardous substances and facilities occurs. 18 - 3