8. Rural Living Zone Volume Two 8.2.3.2. For the purposes of Standard 8.2.3.1, "external building envelope" means an envelope defined by the outermost physical parts of a building, normally the cladding and roof. 8.2.3.3. Standards 8.2.3.1 and 8.2.3.2 also apply to an alteration of an existing dwelling, visitor accommodation or other habitable building located within 300m of the closest frost fan selected for the purpose of Standard 8.2.3.1, where a new bedroom forms part of the alteration. For the avoidance of doubt only the new bedroom has to be treated in accordance with Standards 8.2.3.1 and 8.2.3.2. 8.2.3.4. For the purposes of Standards 8.2.3.1, 8.2.3.2 and 8.2.3.3, "frost fan" includes a lawfully established frost fan, and includes a proposed frost fan for which a resource consent has been granted and "site" has the meaning of "single land holding". 8.2.4. Use of external lighting. 8.2.4.1. Light spill onto an adjoining residential site must not exceed 2.5 Lux spill (horizontal and vertical). 8.2.5. Odour. 8.2.5.1. The odour must not be objectionable or offensive, as detected at or beyond the legal boundary of the area of land on which the permitted activity is occurring. 8.2.6. Smoke. 8.2.6.1. The smoke must not be objectionable or offensive, as detected at or beyond the legal boundary of the area of land on which the permitted activity is occurring. 8.2.7. Dust. 8.2.7.1. The best practicable method must be adopted to avoid dust beyond the legal boundary of the area of land on which the activity is occurring. 8.2.8. Dust from any process vent or stack. 8.2.8.1. The dust must not contain hazardous substances. 8.2.8.2. The particulate discharge rate from any air pollution control equipment and dust collection system must not exceed 250mg/m at any time, corrected to 0°C, 1 3 atmosphere pressure, dry gas basis. 8.2.8.3. Dust particles must not exceed 0.05mm size in any direction. 8.3. Standards that apply to specific permitted activities 8.3.1. Home occupation. 8.3.1.1. The home occupation must be undertaken by a person(s) residing on the site and employ/contract no more than 1 additional person. 8.3.1.2. For home occupation activities that generate traffic, hours of operation must only occur during the following hours: 8.00 am to 6.00 pm Monday to Friday 9.00 am to 12.00 pm Saturday 8 – 4