April 2020

Using Caged Clams to Assess the Exposure and Effects of Contaminated Groundwater Upwelling at Hanford Site near the Columbia River Researchers have detected concentrations of uranium, a contaminant of concern, in much of the shallow groundwater beneath the 300 Area of the Hanford Site near the Columbia River. Benthic organisms such as Asiatic clams are […]

NRDA Field Study Plan: Characterizing Temporal and Spatial Patterns of Contaminated Groundwater Upwelling into the Columbia River EAS provided the U.S. Department of Energy’s Richland Operations Office (DOE-RL), on behalf of the Hanford Natural Resource Trustee Council, a highly experienced and technically proficient team to support the development of a scientifically sound field study plan

Remedial Investigation of Hanford Site Releases to the Columbia River EAS collected more than 1,100 new samples between 2008 and 2010 to measure concentrations of contaminants in aquatic media in support of DOE’s Remedial Investigation of Hanford Site Releases to the Columbia River. We sampled, evaluated, and reported on surface water and pore water, sediment,

Installation of Hyporheic Sampling Points (HSPs) in the 100-BC Area EAS was awarded the CHPRC contract to build and install 22 hyporheic sampling points in the Columbia River near the 100-BC-5 Area of the Hanford Site. The purpose of the project was to better define the level of hexavalent chromium in the river substrate, describe

EAS assembled and led team to perform high-risk internal steel water storage tank inspections associated with nuclear facilities.  Our staff planned the project approach required approval of a Hazard Review Board. We utilized certified commercial divers safely and successfully performed underwater inspections, cleaning, and minor repair work in four elevated water tanks—from 300-thousand gallons to

EAS, working with Pacific Northwest National Laboratory, conducted snorkel surveys in the Hanford Reach to locate, identify, and measure freshwater mussel species inhabiting near-shore habitats. The study was intended to provide a more comprehensive characterization of freshwater mussel species composition and distribution in the Hanford Reach, estimate mussel densities, and determine the age structure of