23. Airport Zone Volume Two [R, D] 23.1.14. Geotechnical bore drilling for the purposes of investigation of sub-surface conditions. [D] 23.1.15. Grazing of livestock. [D] 23.1.16. Recreation facility or activity. [R] 23.1.17. Application of an agrichemical into or onto land. [R] 23.1.18. Application of fertiliser or lime into or onto land. [R] 23.1.19. Discharge of human effluent into or onto land through any onsite wastewater management system lawfully established prior to 9 June 2016. [R] 23.1.20. Discharge of contaminants to air arising from the burning of materials for any of the following purposes. (a) training people to put out fires; (b) creating special smoke and fire effects for the purposes of producing films; (c) fireworks display or other temporary event involving the use of fireworks. [R] 23.1.21. Discharge of contaminants to air that is not specifically provided for by any other rule, arising from: (a) discharge of heat to air; (b) discharge of energy to air, including release of energy from a source of electromagnetic radiation, including a radio transmitter, television or cell phone; or release of x-rays from a radioactive source; (c) discharge for the purposes of ventilation or vapour displacement. [R] 23.1.22. Discharge of contaminants to air from the combustion of fuel (i.e., external combustion). [R] 23.1.23. Discharge of contaminants to air from combustion within a stationary internal combustion engine (i.e., internal combustion). 23 – 2