Duncan Transformer is a superfund site located at Se/4 Sec 18 T15n R7w, Duncan, OK 73533. The Environmental Protection Agency (EPA) identifies sites such as Duncan Transformer 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. Duncan Transformer is currently registered as an Archived superfund site by the EPA and does not require any clean up action or further investigation at this time.