The Puget Sound Clean Air Agency is publishing a public notice for a proposed permit for Icon Materials for the installation of: three 200 ton asphaltic concrete silos and one 500 barrel mineral silo; replacement of an existing drum dryer with a new 300XL Gencor Rotary UltraDrum (375 TPH, Gencor Equinox -100, 100 MMBtu/hr gas-fired burner) equipped  with a Recycle Asphalt Package (up to 50% Recycled Asphalt Pavement) and Ultrafoam GX2 warm mix package venting to an existing cyclone and existing Gencor CFS-151 (74,000 cfm baghouse) rated at 70,000 cfm @ 160F. Icon Materials is already permitted to operate two existing vertical 25,000-gallon (11'x35') Gencor Hot Asphalt Oil Tanks (300F), one existing 150-ton and one existing 120-ton Gencor Asphalt Storage Silos vented to the Rotary Drum.

The emissions associated with this project could total up to: 9.2 tons per year of particulate matter; 41 tons per year of carbon monoxide; 6.8 tons per year of nitrogen oxides; 1.7 tons per year of sulfur dioxide; including 2.8 tons per year of Hazardous Air Pollutants, 63.5 ton/yr of Toxic Air Pollutants, and 16,833 tons of greenhouse gases.