Site 36AL480, a stratified multi-component site along the Ohio River floodplain in Allegheny County, Pennsylvania, was impacted by the District’s construction of Braddock Dam segments in Leetsdale Industrial Park. Data recovery excavations for mitigation were untaken concurrent with construction from 1999-2003. The site included a 19th century brickworks overlying Native American occupations dating back about 6,800 years, discretely preserved in floodplain deposits. Geomorphology and regional environmental reconstruction played a significant role in the excavations and site interpretation. No other site of this type has been excavated under controlled conditions along the upper Ohio River in Pennsylvania.
Columbus, Ohio-based CRM firms ASC Group, Inc. and Hardlines Design Company conducted Phase II archaeological investigations for this project.