Western Wood Preservers Institute Represents preservative treated - - PowerPoint PPT Presentation

Western Wood Preservers Institute

• Represents preservative treated wood producers,

chemical manufacturers and others serving the industry throughout western North America

• Mission

Increase awareness of the proper use of preserved wood products by providing information to:

• Homeowners
• Builders
• Architects, Specifiers
• Bldg. Material Dealers
• Code Officials
• Ports and Marinas

Overview

• Advantages and challenges with materials
• Regulatory update
• How WWPI can help
• Toolkit for Using Preserved Wood

Continuity of Wood

• Stave Church,

Borgund, Norway

• Completed in 1180
• Modern engineering to

protect the wood and lengthen the life of the structure

Wood’s Many Advantages

• Proven
• Economical
• Long-lasting
• Strong, durable, resilient
• Availability in

emergencies

• Domestically ̶
• ften locally ̶ produced
• Natural appearance
• Rugged handling
• On-site modification
• Renewable
• Less energy intensive
• Carbon storage
• Minimal on-site waste

Remember: All materials have enemies

• Concrete
• Steel
• Wood
• Auger cast piles

Wood Durability Challenges

• Carpenter ants
• Wood boring beetles
• Marine borers
• Termites
• Decay, fungi, rot
• Fire

Concrete Issues

• Spalling
• Soil displacement
• Changing pH
• Disposal
• Expensive
• Environmental

effects

• Non-renewable

Steel Issues

• Corrosion
• Installation

alignment

• Bending
• Failure
• Expensive
• Environmental effects
• Non-renewable resource

Why Use Preserved Wood?

• Sustainable
• Durable
• Long lasting
• Economical

Treated wood products are sustainable

Inputs

• Seed
• Soil
• Water
• Sun
• CO2

Outputs

• Oxygen
• Habitat
• Stored Carbon
• Mature Forest
• Wood Products

30-80 years of forest management

By the time your preserved wood has served its life, New products will be grown and ready to replace it

Resisting Nature

Coastal home in Galveston, Texas

• Built on CCA pilings
• Survived

Hurricane Ike, storm surge

Longevity of Wood Pilings, Posts

• Extensive record of long service

life in demanding conditions

• East and West coasts
• Post tests dating back to 1920s
• Oregon State University
• Mississippi State University
• US Forest Products Lab

Life Cycle Assessment Conclusions

• Preserved wood

products have significantly lower impacts than alternatives

• Wood uses less

energy, water and fossil fuels with lower environmental impacts

Composite of 7 environmental indicators, normalized

Preserved Wood in Aquatic Environments: Regulatory Updates

Federal Legislation

• Clean Water Act (CWA)
• Clean Air Act (CAA)
• Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
• Resource Conservation and Recovery Act (RCRA)
• Endangered Species Act (ESA)

Regulations and Enforcement

• Environmental Protection Agency (EPA)
• US Army Corps of Engineers
• NOAA Fisheries/NMFS
• Myriad State Agencies

Statutory/Regulatory Framework

Washington

• Considered on a case-by-

case basis

• DNR: Waterborne

preservatives (ACZA, ACQ) using WWPI BMPs

• Proposed: Corps RGP-6

Inland Marine Waters

• ACZA-treated pilings

with BMP certificate

Oregon

• No permanent restrictions on

preserved wood

• Considered on a case-by-case basis
• Corps of Engineers Nationwide

Regional Permit Conditions (2012)

• Excluded from General Permit
• Must obtain Individual Permit
• Preserved wood not covered in

programmatic BiOp SLOPES

• ESA Section 7 Consultation

required on “may affect” projects

Special Local Operating Procedures for Endangered Species (SLOPES)

SLOPES for over water structures:

• Programmatic Biological Opinion
• Applies only to Corps Portland District
• SLOPES III (2004) included preserved wood
• SLOPES IV (2012) omitted preserved wood
• SLOPES V in development
• Working to get treated wood included in the BiOp

to streamline permit process

Idaho

• No permanent restrictions on

preserved wood

• Evaluated on case-by-case basis
• Must meet state water quality

standards for copper, pentachlorophenol, other

Environmental Protection

• BMPs
• Aquatic Assessment Model
• Wraps
• Polyurea coatings

Best Management Practices

• Designed for preserved wood in aquatic

applications

• Minimize preservative migration from preserved

wood

• Specifying BMPs
• Select use and preservative according to

American Wood Protection Association standards

• Require material to be produced in compliance

with BMPs

• Require third party inspection assurance

Best Management Practices (continued)

• May include air or kiln drying to pre-condition wood
• Wood is vacuumed after the cylinder is drained of

preservative—length of vacuum depends on species and preservative

• Extended vacuum or double vacuum may be used
• Post treatment processing includes kiln drying, air

seasoning, steaming, or expansion bath.

• Document BMP treating techniques
• Final visual inspection to ensure there are no excessive

residues or surface deposits are present

Aquatic Assessment Model

• Developed by Oregon

State University

• Site specific evaluation
• f environmental

impact

• Easy to use –

“Plug ‘n Chug Model”

PreservedWood.org/portals/0/documents/ ScreeningLevelAssessment.pdf

Immersed treated piling Water depth (cm) Box length = length

• f the structure

(cm) Current Vector Vss or Vmodel Contaminant inputs include rainwater runoff from overhead treated wood and direct inputs from immersed treated wood

Aquatic Assessment Model

The evaluation worksheet designed to lead user to one of five ESA determinations:

1.

“no effect” determination

2.

“no effect” determination with specific special conditions

3.

“may affect, not likely to adversely affect” determination which may allow informal consultation;

4.

“may affect, not likely to adversely affect” with specific special conditions determination can be made which may allow informal consultation;

5.

“likely to adversely affect” determination which will require formal consultation.

New Web Platform for Model

Western Wood Preservers Institute www.preservedwood.org 360-693-9958

• Easy access and simple user interface
• Ability to save sessions and auto-generate results report

Project Inputs: Select Preservative

Western Wood Preservers Institute www.preservedwood.org 360-693-9958

• Dynamic results show estimated downstream water and

sediment concentrations for relevant contaminants

Project Inputs: Number of Pilings

Western Wood Preservers Institute www.preservedwood.org 360-693-9958

• Number of pilings in a row, and piling bents
• Hover-over help and more detailed definitions available

Review, Save, and Print Results

Western Wood Preservers Institute www.preservedwood.org 360-693-9958

• The model shows a “no effect” determination
• You can use treated wood on your project!

Normalized benchmarks No effect (on sediment or water quality)

WWPI Advocacy & Tools

WWPI is an Advocate

• Challenges to Ports
• Time/staff intensive to deal with regulatory

issues

• Cost of regulatory compliance
• Rising project costs
• Environmental sustainability

Treated Wood App

• Free download

available for iOS and Android smartphones, tablets

• Search “Western Wood

Preservers” in online stores

Lets Partner Up!

• No permanent restrictions on

preserved wood

• Preserved wood is the all

around best material

• Assess aquatic impacts easily
• WWPI is here to be a resource

Review

Contact WWPI for Assistance

Website: preservedwood.org Sharla Moffett sharla@preservedwood.org 360-693-9958