The Amenity Effect Programme
Newmont Waihi Gold (NWG) operates the Favona and Martha mines close to a number of residential properties in the Waihi community. The mining licence and resource consents place very stringent limits on noise, vibration and dust.
Consent limits are designed to be protective of amenity (quality of life) for most of the Waihi community for most of the time. However, NWG recognises that people living in some areas may, from time to time, experience reduced amenity due to levels of noise, vibration and possibly dust generated by mining activities, despite the mining operations being conducted within consent compliance limits.
Although NWG has no legal obligation to do so, the new Amenity Effect Programme (AEP) aims to compensate those households for loss of amenity.
How are the areas defined?
NWG analysed all noise and vibration monitoring during 2007 and community feedback over a longer period. The analyses identified zones where households are most likely to experience 'more than infrequent' effects of noise and vibration from the current operations.
Within these zones there are 129 properties.
What criteria were used?
With monitoring equipment used according to consent conditions -
For noise:
Properties downwind in predominant wind directions (south-west and north-east) with wind speed of between 2.5 and 5 metres per second that results in mine-derived noise levels exceeding 50dBA.
For blast vibration:
Average of two or more blasts per month with ground vibration equal or greater than 1.5 millimetres per second in magnitude (Peak particle velocity).
For dust:
No specific provision is made for dust effects as the daily quantities generated are too small to measure and there is no usable method of measuring mine-derived dust in isolation of dust from other sources.
As dust and noise effects are both exacerbated by wind, it is assumed that a dust effect could occur wherever there is a noise effect. The noise payments therefore include dust effects.
How will people join the programme?
NWG representatives will be in contact with the residents of eligible properties over the coming weeks to discuss the programme and enrol those interested in joining. Participation is voluntary and residents will be able opt in at any time. An eligible resident may initially decide not to join the programme but may still join later on. Also, anyone who joins may opt out at any time.
Residents who believe they should be eligible but have not been invited to join the AEP can ask to be included. NWG will undertake monitoring over a period to assess eligibility and will extend the programme to any additional properties that meet the qualifying criteria.
How is payment calculated?
Payments are based on NWG's monitoring results and a schedule of rates based on magnitudes of vibration and noise. Rates have been set so the average annual vibration and noise payments per resident are approximately equal.
The average annual payment for all qualifying residents, excluding the initial enrolment payment, is around $1,000. Individual payments will range from less than $100 to more than $4,500.
The initial round of qualifying residents will receive payments backdated to 1 January 2007. This date approximately coincides with the start of the south wall stability cutback in the Martha pit, production in the Favona underground mine and an initial trial period on the AEP with six properties.