Volume Two 13. Port Zone (b) if the engine is in a fixed location, the stack must comply with the requirements of Appendix 8 – Schedule 5. 13.3.25.5. Where more than one fuel type is used on the site, the combined heat output must not exceed the lowest MW or kW threshold of any of the fuel types used. 13.3.26. Discharge of contaminants to air from the spray application of paint or adhesive coating materials of surfaces not within a spray booth, other than a road. 13.3.26.1. There must not be more than 5 litres of coating material applied per hour and not more than 20 litres of coating material applied per month. 13.3.26.2. Where there is a sensitive receptor on another property within 100m of where the spray coating is to occur, there must not be more than 0.5 litre of coating material applied per hour and not more than 5 litres of coating material applied per month. 13.3.26.3. Spray coating must not occur on surfaces of fixed structures that can practicably be dismantled and transported to a spray booth. 13.3.26.4. The coating material must not contain di-isocyanates or organic plasticisers. 13.3.26.5. The discharge must occur at least 10m from any sensitive receptor beyond the boundary of the property where spray coating is undertaken. 13.3.26.6. There must be no dispersal or deposition of particles beyond the boundary of the property where the discharge originates. 13.3.27. Discharge of contaminants to air from the application of coating materials (including paints and powders) through spray application undertaken within an enclosed booth. 13.3.27.1. Coatings that contain di-isocyanates must not be used. 13.3.27.2. The maximum rate of coating material sprayed at one booth must not exceed 10 litres per hour. 13.3.27.3. The spray booth must be fitted with an air extraction system vertically discharging all contaminants and exhaust air to an emission stack. 13.3.27.4. The emission stack must be a height of at least 2m above the ridgeline of the roof of any building, land or other substantial structure within a radius, from the stack, of 35m. 13.3.27.5. The discharge must be directed vertically into the air and must not be impeded by any obstruction above the stack which decreases the vertical efflux velocity, below that which would occur in the absence of such obstruction. 13.3.27.6. The discharge must be through a filtration system that removes at least 95% of particulate matter from the discharge. 13.3.28. Discharge of contaminants to air from the burning of solid fuel in an enclosed pellet burner. 13.3.28.1. The burner must comply with the stack requirements of Appendix 8 – Schedule 2. 13.3.28.2. The burner must only burn fuels approved for use in the burner. 13 – 15