The Environmental Protection Agency’s Great Lakes National Program Office intends to award a sole source purchase order to Sequoia Scientific, LLC for a hyper-bb hyper-spectral scatter and LISST-200X particle size analyzer, to be used onboard the research vessel Lake Guardian. Interested parties must provide evidence of their capability to fulfill the requirement by July 28, 2026. Responses must be submitted in writing to the Contract Officer. No budget amount is specified. The location for performance is onboard the research vessel Lake Guardian.