From the Executive Summary: "In response to the Covid-19 [coronavirus disease 2019] pandemic, federal, state, and municipal policymakers adopted a number of temporary policies that suspended, delayed, or relaxed various environmental safeguards. The Institute for Policy Integrity created a public database to track these policies. This report analyzes the nature and the scope of these actions, along with their public health and environmental impacts, where ascertainable. It also recommends criteria that agencies can use to determine when to end any ongoing policy concessions, so that public safeguards can be restored as quickly as possible. Finally, this report provides guidance on how agencies can work to promote transparency about these actions, counteract detrimental effects, and preemptively create guidelines to improve responses in a future emergency."