Regional Council staff also monitor Northland's two operational landfills every three to six months, and all closed landfills annually. Surface water, groundwater and sediment samples are collected from sites adjacent to operational landfills. These samples are analysed for contaminants, such as heavy metals. All landfills monitored in 2009-2010 complied with their consent limits and there was no significant contamination to nearby land or waterways.
A new landfill under development at Puwera, Portland is due to open in November 2010 so Northland's refuse will no longer be transported to Redvale, Albany.
Photo: Ahipara Landfill, which is monitored by Regional Council staff.