25.4.4 Rules - General Standards

​​​​When a Certificate of Compliance is sought a report by a suitably qualified and experienced practitioner may need to be provided to Council certifying compliance with the standards below, where appropriate.

25.4.4.1 Site Design

a)​ ​ Any part of a hazardous facility which is involved in the manufacture, mixing, packaging, storage, loading, unloadi​ng, transfer, use or handling of hazardous substances shall be designed, constructed and operated in a manner which avoids:​
i.​ Any off-site adverse effects on people, ecosystems, physical structures and other parts of the environment, unless permitted by a resource consent.​
ii.​ The contamination of air, land and water (including groundwater, potable water supplies and surface waters) in the event of a spill or other type of release of hazardous substances.​

25.4.4.2 Site Layout

a) The hazardou​s facility shall be designed to ensure that separation between on-site facilities and the property boundary is sufficient for the protection of neighbouring facilities, land uses and sensitive environments (excluding sites covered by Rule 25.4.5.2)​.​ 

25.4.4.3 Site Drainage

a) Site drainag​e systems shall be designed, constructed and operated in a manner that avoids the entry or discharge of hazardous substances into the stormwater and wastewater networks unless permitted by a network utility operator.
​b)​All stormwater grates on the site shall be clearly labelled for stormwater only.

Note

1. Compliance can be achieved using precautionary methods, which may include clearly identified stormwater grates and access holes, roofing, sloped pavements, interceptor drains, containment and diversion valves, oil-water separators, sumps and similar systems.

25.4.4.4 Wash-Down Areas

​a) ​ ​ Any part of the hazardous facility site where vehicles, equipment or containers that are, or may have become, contaminated with hazardous substances are washed shall be designed, constructed and managed to avoid any co​ntaminated wash water from:​
i.​ Entering or discharging into the stormwater drainage or the wastewater networks unless permitted by a network utility operator.​
ii​. Contaminating land, ground water, any water body or potable water supply.

Note
1. Suitable means of compliance include roofing, sloped pavements, interceptor drains, containment and diversion valves, oil-water separators, sumps and similar systems.
2. Council bylaws also apply to the discharge of contaminated wash water from the site.

25.4.4.5 Spill Containment Systems

​a) ​ ​ ​ Any parts of the hazardous facility site where a spill may occur shall be serviced by a suitable spill containment system that shall be:​
i.​ Constructed from impervious materials resistant to the hazardous substance(s) used, stored, manufactured, mixed, packaged, loaded, unloaded or otherwise handled on the site; and for above-ground storage of liquid hazardous substances:​
A.​ Able to contain the maximum volume of the largest tank on site plus an allowance for stormwater or fire water.​​
B.​ For drums or other smaller containers, able to contain half of the maximum volume of substances stored, plus an allowance for stormwater or fire water.​
ii.​ Able to avoid any spill or other unintentional release of hazardous substances, and any stormwater and fire water that has become contaminated from:​
A.​ Entering the stormwater or wastewater drainage system, unless permitted by a network utility operator.​
B.​ Contaminating land, ground water, any water body or potable water supply.​

Note
1. Suitable means of compliance include graded floors and surfaces, bunding, roofing, sumps, fire-water catchments, overfill protection and alarms, and similar systems.

25.4.4.6 Waste Management

a) Any hazardous facility generating waste containing hazardous substances shall dispose of these wastes to authori​sed facilities holding the necessary consents and be serviced by an acceptable waste disposal contractor.​

Note

1. Hamilton City Council’s Trade Waste Bylaw also applies to the management of waste from such sites.

25.4.4.7 Storage

a) ​ ​ Hazardous substances shall be stored in a manner that avoids:
i.​ The unintentional release​ of the hazardous substance.
ii.​ The accumulation of any liquid or solid spills or fugitive vapours and gases in enclosed off-site areas that could result in potentially adverse effects on people, ecosystems or built structures.

25.4.4.8 Storage Tanks – Petroleum Products

a) ​ ​ ​ Tanks for the storage of petroleum products must be designed, constructed and managed to avoid leaks and spills and resulting adverse effects on people, ecosystems and property. Storage tanks shall be:
i.​ Constructed from impervious materials resistant to the hazardous substances to be stored.
ii.​ Equippe​​d with secondary containment facilities.
iii.​ Serviced by a leak detection or monitoring system which is capable of detecting a failure or breach in the structural integrity in the primary containment vessel.​
Page reviewed: 12 Sep 2016 3:51pm