Port Hills rockfall reports released

01:27, Sep 28 2012
boulder std
DESTRUCTION: Boulders the size of cars fell at nearly 100 kilometres during the February 2011 quake. A Rapaki house in the Port Hills was smashed by a car-sized boulder which fell from the peak above.

Seven technical reports on Christchurch's rockfall-threatened Port Hills have been released.

The GNS Science reports were commissioned by the Christchurch City Council after the Canterbury earthquakes and addressed life-safety risks from rockfall, boulder roll and cliff collapse.

Council strategy and planning general manager Mike Theelen said the findings were used by the Canterbury Earthquake Recovery Authority (Cera) to assist with zoning decisions used by the council for ''infrastructure, planning and regulatory matters''.

Maps had been included to help people understand the reports, and three summary brochures explaining the technical terms were prepared.

"The information in these reports is technical and complex. However, it was important to release the information for our community to have the opportunity to view the full technical reports and recommendations which were used by central government to make zoning decisions,'' Theelen said.

''The reports will also be used by the council to carry out its regulatory functions, such as considering resource and building consent applications, and in the review of its district plans.''

A public seminar will be held on October 13.

The reports and summaries can be viewed here, or at the civic building in Hereford St and service centres from Monday.

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