Volume Two 11. Business 3 Zone 11.3.6. Discharge of contaminants to air from the burning of solid fuel in a small scale solid fuel burning appliance, except a pellet burner. 11.3.6.1. The appliance must comply with the emission, operational and other requirements of Appendix 8 – Schedule 1. 11.3.6.2. The appliance must comply with the stack requirements of Appendix 8 – Schedule 2. 11.3.6.3. The appliance must only burn fuels approved for use in the device. 11.3.6.4. The appliance must be operated so that all reasonable steps are taken to minimise the amount of smoke discharged. 11.3.7. Discharge of contaminants to air from the burning of solid fuel in an enclosed pellet burner. 11.3.7.1. The burner must comply with the stack requirements of Appendix 8 – Schedule 2. 11.3.7.2. The burner must only burn fuels approved for use in the burner. 11.3.8. Discharge of heat and water vapour from cooling towers. 11.3.8.1. No more than 5MW of heat per hour must be discharged. 11.4. Discretionary Activities Application must be made for a Discretionary Activity for the following: [R, D] 11.4.1. Any activity provided for as a Permitted Activity that does not meet the applicable standards. [D] 11.4.2. Any use of land not provided for as a Permitted Activity or limited as a Prohibited Activity. [R] 11.4.3. Any discharge of contaminants into or onto land, or to air, not provided for as a Permitted Activity or limited as a Prohibited Activity. 11.5. Prohibited Activities The following are Prohibited Activities for which no application can be made: [R] 11.5.1. The storage, reprocessing or disposal of hazardous waste into or onto land (other than into a lawfully established hazardous waste landfill). [R] 11.5.2. Discharge of contaminants into air arising from the burning of any of the following materials: (a) wood having a moisture content of more than 25% dry weight; 11 – 5