Ogden Defense Depot Dla is a superfund site located at 500 West 1200 South, Ogden, UT 84407. The Environmental Protection Agency (EPA) identifies sites such as Ogden Defense Depot Dla 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. Ogden Defense Depot Dla is currently registered as an Active NPL superfund site by the EPA. Because it is on the NPL (National Priorities List), Ogden Defense Depot Dla is considered one of the worst hazardous waste sites identified by the EPA.