Recology North Plains CASE STUDY

ASP Composting

Operator: Allwood Recyclers
Location: Troutdale, OR
Feedstock: Green Waste
Capacity: 40,000 T/year
Year Installed: 2019
Project Components:

Client’s Requirements

Recology was looking to expand their organics processing capacity in Oregon. They needed a cost effective solution that would process large amounts of waste on a small footprint with minimal odor impact. The design also had to be modular so that it could be applied at both the Aumsville and North Plains facilities. They put the project out to bid, looking for qualified firms that had extensive industry experience.

Our Solution

GMT won the bid in 2012 and designed a 24 zone negative aeration pipe on grade system. The system operated without issue for a decade, when Recology decided they wanted to put the piping below grade to lower operational costs and improve throughput. GMT was again hired for the expansion work, designing a 20 zone reversing ASP system that integrated into the existing asphalt pad. The below grade system was installed in 2022 and has been operating without issue ever since.