Amendment 0004_1988_71 composite gsd.jpg

This is a grain size distribution curve chart from a soil analysis report for the Sea Bright Borrow Area. The document presents composite core data from Boring No./Range BR-71 at elevation 0-28.5 feet, with analysis date noted as November 75, 1998 (NAD reference). The chart displays particle size distribution using both phi scale and standard sieve measurements, showing the percentage of material coarser and finer by weight across the grain size spectrum.

The soil composition analysis reveals a predominantly sandy material with a notable coarse-to-medium sand fraction, transitioning to fine sand and silt components at the smaller grain sizes. The distribution curve indicates approximately 16 percent coarse material (retained above phi -2.0), with the bulk of the sample concentrated in the medium to fine sand range (phi -1.0 to 2.0). The curve shows a smooth progression through the sand sizes, with minimal fine silt content. The phi distribution grain size curve scale ranges from -5.0 to 4.0, with corresponding sieve sizes from 30 mesh to 0.05, providing technical specification of the borrow material's geotechnical properties for what appears to be a coastal engineering or construction project.