25. Definitions Volume Two Threatened as mapped on the Threatened Environments Maps 1 to 9. Environments – Indigenous Vegetation Sites tikanga Māori has the same meaning as in Section 2 of the Act. Topsoil means the soil forming the A horizon of a soil profile, being the dark soil layer between the top layer of humus and the subsoil. Total gross floor area means the sum of the gross area of floor of a building or buildings measured from the exterior walls or from the centre lines of walls separating two buildings; provided that, in the case of a shop, any land on which goods are offered or displayed for sale by retail must be included in the area calculati on. Transfer of water refers to the transfer of a water permit, in whole or part, to any other permit owner or occupier within the catchment. It does not refer to the physical movement of water. Tree Protection Zone means a specified area above and below ground and at a given distance from the trunk, set aside for the protection of a tree’s roots and crown to provide for the viability and stability of a tree to be retained where it is potentially subject to damage by development. The radius of the Tree Protection Zone (TPZ) is calculated for each tree by multiplying its diameter at breast height (DBH) x 12 where the DBH is the trunk diameter measured at 1.4m above ground. (TPZ = DBH x 12). Utility has the same meaning as network utility operator in Section 166 of the Act. Vegetation includes trees, shrubs, plants and grasses. Vegetation clearance means the cutting, destruction or the removal of all forms of vegetation including indigenous and exotic plant vegetation by cutting, burning, cultivation, crushing, spraying or chemical treatment. Vehicle oriented means commercial activities that rely by nature of their commercial activities activity, on high vehicle volumes being sited on or driving through their own premises and includes service stations, truck stops, supermarkets, shopping centre complexes, and drive-in or drive through retail outlets. Vertebrate toxic agent means a trade name product used to kill, control or limit the viability of vertebrate pests (such as rabbits, possums). Vertebrate toxic agents include products that have a negative effect on reproduction but do not include attractant or repellent substances that are not toxic. Vessel has the same meaning as “ship” in Section 2 of the Maritime Transport Act 1994. Veterinary clinic means premises used by a veterinary surgeon but excludes the boarding of animals other than for their hospitalisation. 25 – 26