City looks to turn more solids into biogas at Columbia plant

By Jennifer Anderson, Portland Tribune. 

More of Portland’s wastewater soon may be converted to compressed natural-gas vehicle fuel, which would reduce the use of diesel fuel and cut greenhouse gas emissions. 

This comes as the Portland City Council approved a contract for final design of a $10.9 million facility at the Columbia Boulevard Wastewater Treatment Plant in North Portland. 

The Bureau of Environmental Services is exploring available grants and financial incentives to reduce project costs.