Wood preservation means the preservation of wood using heat or pressure treatment, or both.
A facility used for wood preservation must report any of the 17 individual PAHs incidentally manufactured and released on site or transferred off site from a wood-preservation process using creosote, regardless of the number of hours worked by employees. Refer to Chapter 4 of the Supplementary Guide for more information regarding this activity. If selected, field A11.2.e Wood Preservation, will be automatically selected.