Injunctive Relief/Compliance Actions: Under the settlement, Costco must implement a refrigerant compliance management system designed to prevent future violations of ozone protection requirements, and reduce its corporate-wide average leak rate from 24.1% to 19.1% or below in 2017, at 274 warehouses nationwide. The settlement also requires Costco to retrofit or replace commercial refrigeration equipment at 30 warehouses to use non-ozone depleting substances with a global warming potential of no more than 1,825. In addition, Costco must install secondary loop systems, using much less refrigerant than traditional direct expansion systems, and install centrally monitored leak detection systems, at all new warehouses.