April 2020

ASSESSING EXPOSURE AND EFFECTS OF CONTAMINATED GROUNDWATER UPWELLING

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 …

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CHARACTERIZING TEMPORAL AND SPATIAL PATTERNS OF CONTAMINATED GROUNDWATER

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 …

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REMEDIAL INVESTIGATIONS AT HANFORD SITE

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, …

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UNDERWATER TANK STORAGE INSPECTIONS

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 …

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NATIONAL ENVIRONMENTAL POLICY ACT PLANNING FOR TROUT LAKE INSECT AND DISEASE RESTORATION PROJECT

U.S. Forest Service, Environmental Policy Act Planning for Trout Lake Insect and Disease Restoration Project, Washington Resource Conservation and Development Council (WRC&D) EAS worked closely with Forest Service planners to evaluate restoration needs and approaches to correct the long-term impacts of fire suppression within ecosystems that require frequent low- to moderate-intensity fires. The Trout Lake …

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DETERMINING THE EFFECTIVENESS OF BIRD FLIGHT DIVERTERS ON TRANSMISSION LINES

Determining the Effectiveness of Bird Flight Diverters with Grand County Public Utility District    Power producers are now retrofitting existing power lines and installing new equipment to conserve bird species. EAS is working with the Grant County Public Utility District as part of a long-term project to determine the effectiveness of bird flight diverters in …

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IDENTIFYING NOXIOUS WEEDS TO ERADICATE AND CONTROL SPECIES

Identifying Invasive, Noxious Weeds for Bonneville Power Administration in Washington   The EAS team performed a pre-construction noxious weed survey for an electric power transmission line rebuild project between Grand Coulee and Creston, Washington, as part of a federal Environmental Assessment. The proposed project would replace all wood-pole structures, improve existing access roads, and develop …

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SAMPLING AND ANALYSIS OF RIPARIAN AND NEAR-SHORE AQUATIC ZONES OF INTER-AREAS

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 …

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