We regulate the air, water, and hazardous waste activities at the WestRock pulp and paper mill in Tacoma.
Wood chip screening project
Comment period: June 15 - July 18, 2018
We invite you to comment on the Tacoma WestRock pulp and paper mill's proposed wood chip screening project Notice of Construction (NOC) Order and State Environmental Policy Act (SEPA) Determination of Nonsignificance (DNS).
This project would improve the mill's wood chip conveyor system. The new system will have belt conveyors with a dust collection cyclone specifically designed to control particulate matter (dust) emissions (air pollution). The new equipment will replace existing, less efficient equipment.
We expect the updated system will increase wood chip processing by about 90 bone dry tons each day. This would cause an increase in pulp and paper production. Air pollutants expected to increase include:
- Total suspended particulates by 0.33 tons/year.
- Particulate matter less that 10 microns in size by 0.3 tons/year, and less that 2.5 microns by 0.23 tons/year.
- Volatile organic compounds by 3.9 tons/year.
- A group of chemicals called "toxic air pollutants" by 15.59 tons/year.
The pollutant increases will not exceed air quality standards.
Because this equipment releases air pollution, the Washington Department of Ecology must issue a Notice of Construction (NOC) Order before construction can take place. The order puts limits on the amount of air pollution the wood chip conveyor system can release.
Read the comment period notice for more information on how to comment and when a public event will take place.