This is a Sources Sought Notice for market research only, not a solicitation or request for proposals. The government seeks contractors to provide non-personal services for National Historic Preservation Act archaeological and architectural surveys, including Phase I and II site detection and evaluations. The follow-on contract will be a Base plus four-year requirements contract performed at Fort Campbell, KY. The current requirement expires on 28 September, with the new award expected before that date. No budget amount is specified.