Amendment 0004_1988_78 penetration graphs.jpg

This document is a penetration testing graph displaying time-based measurement data for the U.S. Army Corps of Engineers, New York District. The chart tracks penetration depth measured in feet [ft] on the vertical axis against penetration time measured in hours [in/ft] on the horizontal axis, covering a range from 0 to 30 feet across a 4-row grid structure.

The document references seismic survey embarking area coordinates and notes Y=21,607 and X=22,022,512. It indicates the location as related to Barge 2 and includes references to core description data. The chart appears to be a technical geotechnical or environmental assessment document, possibly related to soil boring or subsurface investigation activities. The document header identifies it as being prepared for the U.S. Army Corps of Engineers, with core number BE-75, core depth 47 feet, and a date notation of approximately 21-07-23 or similar. The graph uses solid and dashed lines to differentiate data series, with Run 1 and Run 2 intervals clearly marked on the chart.