NOTE: This guide specification covers the requirements for a Non-Zinc Epoxy Barrier Coating, Flexible/Fluoropolyurethane coating systems, VOC Compliant <50 grams per liter .42 lbs per gal max. VOC. These products were developed under NAVFAC SBIR (Small Business Innovative Research & Development grants) in 2005 & 2006 under Contract Numbers N68711-05-P-0039, N68711-05-P-0043 Phase I and N62473-06-C-3051, N62473-06-C-3038 Phase II. Their use is for exteriors of new steel structures, such as fuel tanks, water tanks, aboveground piping and hangar walls. This system is also for operations involving the removal and replacement of existing coating systems for exterior steel.