For the Washington State Antifouling Boat Paint Alternatives Assessment (AA), Northwest Green Chemistry is following the Washington State AA Guide, which is based on the Interstate Chemicals Clearinghouse (IC2) Guide. There are four recommended modules, all of which are being included in this AA: Hazard, Performance, Cost & Availability, and Comparative Exposure. In addition to these four modules, NGC is including Stakeholder Concerns as the fifth module.
Hazard: What are the inherent hazards of the alternative products or technologies? How does this compare to the product or technology that is being phased out?
Performance: How well do the alternative products function? Do they perform as well as the current product being considered for replacement?
Cost and Availability: How expensive are the new products or technologies? Are they available? Are they available in sufficient quantities, or could they be scaled to supply sufficient quantities?
Comparative Exposure: Are there any differences in how humans or the environment are exposed to hazardous chemicals? For example, when considering paints, the application method results in exposure differences.
Stakeholder Concerns: What additional concerns do key stakeholders have? For this project, NGC has identified three areas of concern: Boatyard Chemicals of Concern, Puget Sound Chemicals of Concern, and Volatile Organic Chemicals (VOCs). Boatyards are concerned with the presence of copper, zinc, and sometimes lead due to the permitting process. Specific chemicals of concern to Puget Sound have previously been identified (Hart Crowser 2007). VOCs are a common concern with any topic around paints, and antifouling paints are not an exception.