Clevite Elastomers Imperial Clevite is a superfund site located at 503 Weatherhead Street, Angola, IN 46703. The Environmental Protection Agency (EPA) identifies sites such as Clevite Elastomers Imperial Clevite 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. Clevite Elastomers Imperial Clevite 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.