McFarland Cascade treats utility poles with the following, carefully-selected preservatives:
A widely-used wood preservative that is normally dissolved in a petroleum carrier. It’s the most commonly used preservative system utilized by North American utilities.
Chromated Copper Arsenate (CCA)
A water-borne treatment that offers a wide range of advantages for treated lumber, timber and poles. It’s clean, odorless and paintable. For poles, its use is limited to southern yellow pine, pinus sylvestris, and western red cedar.
An oil-based wood preservative blended from the distillation of coal tar and comprised of more than 200 major constituents. Used only in industrial applications, such as railroad ties, piling (both salt water and fresh water), and for poles.
Copper Azole (CA-B)
A water-borne copper based wood preservative with an organic co-biocide (Tebuconazol). Similar in color, to CCA-C, it is odorless, clean and paintable or stainable. Copper Azole is approved by the American Wood Preservers Association for use on Western Red Cedar and Southern Yellow Pine utility poles.