This bill mandates that the Secretary of Defense request specific modifications to stormwater discharge permits for all Department of Defense (DoD) facilities within one year of enactment. These modifications, to be sought from the relevant State or EPA Administrator, aim to enhance environmental protection by addressing perfluoroalkyl and polyfluoroalkyl substances (PFAS) in stormwater runoff. The requested permit revisions or stormwater management plan updates must include two key requirements: quarterly monitoring of PFAS discharges implementation of appropriate best management practices or control technologies to reduce such discharges. Furthermore, the legislation stipulates that at least 1 percent of the funds authorized for PFAS remediation efforts annually must be specifically obligated or expended for testing these substances in stormwater runoff at DoD facilities, ensuring ongoing assessment and accountability for environmental impact.