After surveying employees, an additional six employees reported minor symptoms. None of the employees felt that their symptoms required medical attention or precautionary medical observation. Again, SEH-A immediately discontinued all Epitaxial facility operations and reassembled the investigation team that included members of operations, facilities, maintenance, engineering, and safety and environmental specialists. Additionally, the Vancouver Fire Department joined the second investigation team. Currently, this team has thoroughly inspected all internal and external support equipment and found no equipment problems.
Environmental Controls continue to operate normally.
The odor was reported in the cleanroom area of the Epitaxial facility, which utilizes highly filtered and purified air. In this environment, odors are noticeable at very low levels. Investigation of possible external and internal sources continues, with consideration being given to the potential effects of last weekend's colder weather conditions.