THIS IS PART OF EPA'S ONGOING WOOD PRODUCTS INITIATIVE WHICH BEGAN IN 1990. THE REGION ALLEGES THAT WILLAMETTE VIOLATED THE PREVENTION OF SIGNIFICANT DETERIORATION PROVISIONS OF THE CLEAN AIR ACT AND THE CORRESPONDING STATE IMPLEMENTATION PLANS AT SIX FACILTIES IN REIGON 10. WILLAMETTE FAILED TO FULLY AND ACCURATELY IDENTIFY ALL POLUTANTS EMITTED FROM ITS FACILTIES, FAILED TO APPLY FOR PROPER PRECONSTRUCTION PERMITS PRIOR TO MODIFICATION OF MAJOR AIR POLLUTION SOURCES, AND FAILED TO INSTALL APPROPAITE POLLUTION CONTROL EQUIPMENT.