Appendix C - Hazardous Facility Screening Procedure Appendix C Hazardous Facility Screening Procedure Introduction The Hazardous Facility Screening Procedure (HFSP) is to be applied to all proposed facilities and activities using or storing hazardous substances. The purpose of the HFSP is to determine the level of risk posed by the presence of hazardous substances. The level of risk will establish the status of the activity relative to rules in the Plan. Hazardous facilities can range from home occupations to large chemical processing factories. Common examples of hazardous substances are acids, solvents, paints, fuels, and pesticides. The HFSP is derived from Land Use Planning for Hazardous Facilities, 1995. Exemptions, Where the HFSP may be waived Hazardous Facilities which have well developed industry standards and codes of practice based on well established levels of risk may be exempted from the HFSP. Activities deemed to comply with this exemption are: • The retail sale of petrol, up to a storage of 100,000 litres of petrol in underground storage tanks and up to 50,000 litres of diesel, provided that the "Code of Practice for the Design, Installation and Operation of Underground Petroleum Systems", published by The Department of Labour - OSH, is adhered to. • Retail LPG outlets, with storage of up to 6 tonnes (single vessel storage) of LPG, provided that the "Australian Standard (AS 1596 - 1989) for LP Gas Storage and Handling - Siting of LP Gas Automotive Retail Outlets" is adhered to. Overview and Terminology The HFSP establishes a Base Threshold for each hazardous substance. The Base Threshold is dependent on the intrinsic properties of the substance but can be modified by an Adjustment Factor. The Adjustment Factor relates to the physical state of the substance, type of storage and activity, site layout, and the environmental sensitivity of the site and location. The multiplication of the Base Threshold with the Adjustment Factor generates an Adjusted Threshold for any effect. Next, the calculation of the Effects Ratio represents the quantity of substance relative to the Adjusted Threshold. The Effects Ratio forms the basis for determining the Plan status of a particular facility or activity. The HFSP is illustrated in Figure C1: HFSP Conceptual Overview App C - 1