Rule 4 Agricultural effluent and other on-farm processes
The discharge of contaminants into air in connection with:
(1) the management of agricultural effluent, including, but not limited to, anaerobic and aerobic pond processes and over land flow and spray irrigation processes; and/or
(2) [buildings used to house animals or feedlots which are part of factory farms; and/or
(3) ]other on-farm processes, such as the manufacture of silage, not otherwise covered by other rules;
is a Permitted Activity, provided it complies with the conditions below [... ].
The person responsible for the activity shall ensure that:
(i) there is no dust, odour, gas or vapour from the process, which is noxious, dangerous, offensive or objectionable at or beyond the boundary of the property.
Clause 2 of Rule 4 was inserted by Plan change 1 to the Regional Air Quality Management Plan 2003
Exclusion (a) of Rule 4 was deleted by Plan change 1 to the Regional Air Quality Management Plan 2003
Explanation: Rule 4 permits the discharge of contaminants to air resulting from farming, as long as it does not emanate from factory farms, and is otherwise in compliance with the stated conditions. Rule 4 permits the discharge of contaminants to air associated with the discharge or processing of farm wastes, such as the treatment and spreading of dairy shed effluent. It also permits discharges to air from other on-farm activities, as long as they are not covered by other rules in this Plan.
As an example, discharges to air resulting from, but not limited to extensive deer, sheep, cattle or pig farming are permitted activities as long as they comply with the stated condition. Proper management and regard to distances from neighbouring properties should ensure that discharges to air from on-farm processes do not result in any offensive or objectionable dust, odour, gas or vapour at or beyond the boundary of the property. Discharges to air from factory farms (intensive farming) are explicitly excluded from Rule 4 and require a discretionary activity resource consent, under Rule 23. Conditions on such consents would require good practice techniques for controlling odour and dust discharges. Adherence to the Pork Industry Board Code of Practice (1993) could be such a condition. Factory farms are defined in the Interpretation.