Key Issues Report of the Porirua City Council - Environmental ...

Heritage
4.65 Objective C8.1 and Policy C8.1.1 seek to protect significant heritage features
within the City. In the case of this proposal, St Jospehs Catholic Church and
Battle Hill Farm Forest Park have been identified in the District Plan as
previously discussed in paragraph 4.23 as being worthy of protection under
Policy C8.1.1. The effects of TGM on the heritage values of these two features
will need to be appropriately addressed.
Flooding and Earthquake Risk
4.66 Objective C12.1 and supporting Policies C12.1.2 – C12.1.5 address the
minimisation of risks from earthquakes to the wellbeing and safety of the
community. As identified in paragraph 4.16, the Ohariu fault line is located at
the northern end of NoR3. Also, areas south of Ranui, east of Maraeroa Marae,
Lanes Flat and the Ohariu Fault Line are identified as Seismic Hazard Areas in
the Porirua City District Plan.
4.67 Policy C12.1.2 seeks to avoid structural damage to buildings and utility
services. Policy C12.1.3 seeks to minimise the disruption to activities of
community significance from an earthquake event. Policy C12.1.4 seeks to
manage the risk of activities to ground liquefaction. Policy C12.1.5 seeks to
minimise the effects of ground damage from land instability as a result of
earthquakes. These provisions are considered to be applicable, both in terms of
the manner in which TGM is designed as well as providing for its ongoing
operation after an earthquake event.
4.68 Objective C12.2 and Policy C12.2.1 relate to the effects flood hazards pose to
the proposed development on the land as well as the potential effects the
development may have on the flood hazard to the surrounding environment.
Properties fronting Kenepuru Drive within the vicinity of the Kenepuru Link
Road (NoR5) and Lanes Flat are identified in Council's GIS as being subject to
Overland Flow Ponding. Also there are a number of overland flow-paths
identified throughout the route.
4.69 Policy C12.2.1 is applicable to the design measures associated with the various
features of TGP including the roads, fill areas and Lanes Flat Site Compound.
These design measures will be applicable in the sense of the risk posed by
flooding to these features as well as the effects that the construction of TGP
may pose to adjacent properties from increased flooding risk.
Contamination and Hazardous Substances
4.70 Objective C15.1 relates to preventing or mitigating the adverse effects
associated with hazardous substances.
4.71 Policy C15.1.1 seeks to control the location of facilities involving the storage of
hazardous substances. This provision is potentially applicable due to the Fuel
Storage, depending on its size, identified within the Lanes Flat Site
Compound 25 . Other hazardous substances may be stored as part of the
construction of TGP also.
25 Figure 8.1 within Folder 1 of 2 of Volume 1: assessment of environmental effects report.
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