S144 — Achievements in Stratospheric Ozone Protection Progress Report

U.S. Environmental Protection Agency (2007)

Open original source — www.epa.gov

official policy retrospective environmental_policy_record

Curated public use: Use for U.S. domestic chronology and early substitution context; retain implementing-agency and causal-attribution limits.

Limitation: Source cards are evidence anchors, not proof that a linked claim is settled.

Source note: Documents domestic controls and early market and technology changes; the implementing agency is not an independent causal evaluator.