This report builds on previous cultural-resource work at the Army Material Testing Laboratory (AMTL) in order more accurately to define the areas within the Laboratory that may contain subsurface remains of historic or prehistoric resources. The three most relevant studies to this effort to date are the Public Archaeology Laboratory (PAL) report (Historic and Prehistoric Reconnaissance Survey, Army Materials Technology Laboratory, Watertown MA [Fitch 1989]), the Envirosphere overview (Archaeological Overviews and Management Man (sic) for the Army Materials and Mechanics Research Center [Klein, et al. 1984]) referred to throughout the PAL report, and the report of the Harvard Institute for Conservation Archaeology's Data Recovery project at the Amphitheater Site just outside the current site limits (The Amphitheater Site: A Late Archaic Settlement in Watertown Massachusetts [Barfield & Barber 1982]). AMTL is immediately adjacent to the Charles River in Watertown Massachusetts. Figure 1 illustrates its location, while Figure 2 is a more detailed map of the project area. Figure 3 illustrates the surface topography defining a slight downward slope toward the Charles River. This slope, over the years has been filled to level it for more efficient use. The analysis described in this report confirms much of PAL's earlier work while filling in the gaps identified by PAL and providing data relative to actual disturbance that was only speculated upon in the earlier work.