The U.S. Geological Survey (USGS) is conducting market research to identify qualified vendors capable of performing Particle Size Distribution (PSD) analysis on approximately 52 soil samples collected from various contaminated sites. The objective of this procurement is to analyze the proportion of sand, silt, and clay within the samples, particularly in areas affected by lead and other metals, with results required by July 15, 2025. This analysis is crucial for advancing scientific research on soil contamination and its implications for environmental health. Interested parties must submit their capabilities statements via email to Anthony Berry at aberry@usgs.gov by June 10, 2025, as this announcement does not guarantee a contract and is solely for planning purposes.