Cover photo for Integrated Atmospheric Deposition Network

Integrated Atmospheric Deposition Network (IADN)

Great Lakes Restoration Initiative

Closed May 6, 2024

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


  • Non-federal government entities (state agencies, agencies or instrumentalities of local governments, Interstate agencies, federally recognized Tribes and Tribal organizations)

  • Nonprofits, including private agencies, institutions, and organizations

  • Colleges and universities

Application Instructions

Visit to apply

This RFA solicits applications from eligible entities for a cooperative agreement to be awarded pursuant to the Great Lakes Restoration Initiative Action Plan III (pdf) (12.5 MB, October 2019). EPA is requesting applications for a project to perform sample collection and analyses in support of the Integrated Atmospheric Deposition Network.

Applications must specify a start date of August 1, 2024, and must specify an end date for the cooperative agreement no later than November 30, 2030, that allows for the completion of analysis and final data reporting for samples collected from November 1, 2024, through December 31, 2029. This incrementally-funded award will be subject to the availability of funding, future appropriations, satisfactory performance of work, and other applicable considerations.


Important Dates:

  • March 7 - RFA posted

  • May 6 - Application deadline (10:59 PM CDT)

  • June - EPA notifies finalist (estimated)

  • July - EPA makes official award (estimated)


Release Date

March 7, 2024


May 6, 2024

Financial Instrument


Total Program Funding


Updated April 12, 2024

Image Credit: EPA

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