Kipapa Fuel Storage Annex is a superfund site located at Off Route 99 (kamehameha Hwy), Mililani, HI 96789. The Environmental Protection Agency (EPA) identifies sites such as Kipapa Fuel Storage Annex because they pose or had once posed a potential risk to human health and/or the environment due to contamination by one or more hazardous wastes. Kipapa Fuel Storage Annex is currently registered as an Active superfund site by the EPA. However, it is not on the NPL (National Priorities List), which means the EPA does not consider it one of the nation's most hazardous waste sites.