Consent near Nevis Bluff blast zone opposed

Blasting on the Nevis Bluff is among grounds for opposition to a consent application for a building platform in the Gibbston Valley.

The New Zealand Transport Agency is one of two parties opposing an application by Jeff Kerwin for a 1000sq m residential platform, earthworks and landscaping at 2455 Gibbston Highway.

The agency's submission, prepared by senior planning adviser Tony MacColl, said the platform was within 500m of the ''blast exclusion zone'' for ongoing operations to displace unstable rock.

Future occupants of any dwelling on the platform would be adversely affected by the blasting and other disturbances, Mr MacColl said.

''Surface blasting has in the past caused shock waves that have resulted in broken windows in buildings on nearby properties, as well as fly rock, which can impact a considerable distance from the blast position, noise, dust and vibration effects.''

Fly rock's chances of landing within 500m of a blast site were ''moderate'', while the effects of vibration were ''severe''.

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