Should contact the responsible Agency or. USDA's TARGET Center at (202) 720-2600 (voice and TTY) or contact USDA through the Federal Relay.The new Master Agreement clarifies employee rights, maintains the balance between union representatives' agency work and representational activities. Should contact the responsible Agency or USDA's TARGET. Center at (202) 720-2600 (voice and TTY) or contact USDA through the. The most common types of Master Agreements are Challenge Cost Share,. Participating, and Stewardship Agreements. The Corps Network holds national agreements with the National Park Service, US Forest Service and US Fish and Wildlife Service. U.S. Forest Service (USFS). Not include service out to the annexation area.