Waste Management New Zealand wants to extend its plant in Hornby and discharge contaminants into the air.
ECan chief executive Bill Bayfield said the consent application was considered by staff, and assessed as only likely to impact affected parties about 500m from the site, and therefore was put out for limited consultation with 38 nearby residents.
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Bayfield said a passionate group of Prebbleton locals, who live near the plant, made a deputation to the regional council on Thursday calling for a review of its decision to put the application out for limited consultation.
The council agreed to those requests and Bayfield said he would report back on both of those issues at the next full council meeting on March 12.
He said the consultation period for the application closes on March 9, and will go ahead as planned.
Bayfield said he understands that those opposing the application feel their position will be boosted by more numbers making submissions, but he said what those submissions say was important.
"The quality of the argument is what will make the difference when we go to hearing on this matter," said Bayfield,
"Not so much the number of submissions.
"I'm sure the people of Prebbleton find that hard, but it is actually going to be the weight of argument that is put in evidence before independent hearing commissioners some time in due course."