The Integrated Atmospheric Deposition Network (IADN) was established in 1990 as a binational monitoring network between the U.S. Environmental Protection Agency (EPA) and Environment and Climate Change Canada (ECCC), in response to scientific evidence that demonstrated that input from the atmosphere is a significant source of many persistent toxic chemicals to the Great Lakes. Since 1990, IADN has monitored persistent toxic chemicals in vapor, particulates, and precipitation at both urban and rural sites across the Great Lakes basin. Master stations are in rural areas on four of the Great Lakes (Eagle Harbor, MI; Sleeping Bear Dunes, MI; Sturgeon Point, NY; ECCC Station: Point Petre, ON) to characterize the background basin-wide trends of persistent toxic chemical loadings to the lakes. Satellite stations are also located in two urban areas (Chicago, IL and Cleveland, OH) to better understand the contribution of large urban areas to persistent toxic chemical loadings to the Great Lakes. All stations are operated by EPA, except for Point Petre which is operated by ECCC. Funding for IADN is provided by the Great Lakes Restoration Initiative (GLRI or Initiative). The GLRI builds on the prior efforts of federal, state, and local agencies; Indian Tribes; businesses; public interest groups; interested citizens; and others to develop a collaborative and comprehensive approach to restoring the Great Lakes. Information about the Initiative can be found at GLRI.us. The statutory authority of the GLRI to award cooperative agreements is contained in the Clean Water Act, Section 118(c)(7), as amended by Public Law 114-322. The EPA has authority to award grants and cooperative agreements for planning, research, monitoring, outreach, and implementation projects in furtherance of the GLRI and the Great Lakes Water Quality Agreement (GLWQA).This Request for Applications (RFA) solicits applications from eligible entities for a cooperative agreement to be awarded pursuant to the statutory authority referenced above and the GLRI Action Plan III.