Audit 329329

Title: Basis of Presentation Accounting Policies: Expenditures reported on the Schedule are reported on the accrual basis of accounting. Such expenditures are recognized following the cost principles contained in the Uniform Guidance, wherein certain types of expenditures are not allowable or are limited as to reimbursement. The Institute has elected not to use the 10-percent de minimis indirect cost rate allowed under the Uniform Guidance. De Minimis Rate Used: N Rate Explanation: The Institute has elected not to use the 10-percent de minimis indirect cost rate allowed under the Uniform Guidance. The accompanying Schedule of Expenditures of Federal Awards (the “Schedule”) includes the federal award activity of Health Effects Institute (the “Institute”) under programs of the federal government for the year ended June 30, 2024. The information in the Schedule is presented in accordance with the requirements of Title 2 U.S. Code of Federal Regulations Part 200, Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards (the “Uniform Guidance”). Because the Schedule presents only a selected portion of the operations of the Institute, it is not intended to and does not present the financial position, changes in net assets or cash flows of the Institute.