The Moose Creek Ranger District on the Nez Perce-Clearwater National Forests has a requirement for Douglas fir rough sawn, copper naphthenate treated running planks for the Selway Bridge with the following specifications:
- SOLID SAWN MEMBERS: Furnish Solid Sawn Running Planks of Coastal Region Douglas Fir-Larch, Rough Sawn, No. 2 or better Grade, as specified in the WWPA or WCLIB grading rules.
- TIMBER TREATMENT: After fabrication, incise and pressure treat all timber members in conformance with AWPA U1, Use Category as described below using pentachlorophenol, Type A Solvent (PCP-A), or copper naphthenate.
- Deck Panels, Curbs, Running Plank: Use Category UC3B (above ground, exposed).
- Follow WWPI's "Best Management Practices for the Use of Treated Wood in Aquatic Environments."
Please see attached Request for Quotes for more information.