Cosmo Specialty Fibers

We regulate the air, water, and hazardous waste activities at the Cosmo Specialty Fibers pulp mill in Cosmopolis.


Air quality permit reissuance

The comment period on the draft Air Operating Permit for the Cosmo Specialty Fibers paper mill ended Feb. 14, 2020. We're reviewing and responding to comments received while making a final decision on this action.

Read the public comment notice for more information.

Facility information

This is a sulfite pulp mill.

  • With around 200 employees, the mill uses virgin hemlock to make about 550 tons of dissolving pulp (acetate, viscose, and ether grades) each day.
  • It treats its wastewater and sends it to Grays Harbor and the Chehalis River.

Permit information

Cosmo Specialty Fibers contacts

Company website
Facility phone: 360-500-4600
Location: 1701 1st St., Cosmopolis, Wash.