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  • Corps of Engineers to host PolyMet public hearing

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will conduct a hybrid in-person and virtual public hearing for the PolyMet/NorthMet Mine project, May 3-5.

  • CSM visits Los Angeles District, shares his ‘people’ philosophy

    U.S. Army Corps of Engineers Command Sgt. Maj. Patrickson Toussaint engaged with employees of the Corps’ Los Angeles District during a visit March 28-31 to the West Coast. Toussaint, the organization's 14th command sergeant major, advises the office of the commander on everything that affects the workforce.

  • Dusty Carroll Wins Prestigious Award

    Keith “Dusty” Carroll has been awarded the Ron Keeling Programming Excellence Award for his work in the Huntington District. The Ron Keeling Award is given annually to one individual for his or her role in the Programs and Project Management Community of Practice in the Great Lakes and Ohio Rivers Division (LRD). Mr. Keith “Dusty” Carroll is recognized for his exemplary contributions to the Civil Works Program within the Great Lakes and Ohio River Division. Mr. Carroll embodies the Army values while faithfully executing his duties and investing in others as a servant leader.

  • Ryan Mayo Receives Commander's Award

    Ryan Mayo is being recognized for his exemplary contributions to the Civil Works Program within the Huntington District. Mr. Mayo embodies the essence of the Agency’s mission of delivering innovative engineering solutions to energize the economy and reduce disaster risk.

  • Coralville Lake now operating under updated Water Control Plan

    The U.S. Army Corps of Engineers, Rock Island District, is now managing Coralville Lake under operational parameters outlined in a recently approved updated Water Control Plan. This plan was the result of a feasibility study initiated to update the Iowa River Basin Master Reservoir Regulation Manual. The Water Control Plan consists of operational parameters defining how, and when, water is stored and released. It includes a schedule of releases, conservation pool levels to be maintained during non-flood or drought conditions, and downstream water level constraints.

  • A Literature Review of Beach Nourishment Impacts on Marine Turtles

    Abstract: This report was developed by the US Army Engineer Research and Development Center-Environmental Laboratory (ERDC-EL) to summarize the known impacts to nesting sea turtles along the Atlantic and Gulf Coasts resulting from beach nourishment. The US Army Corps of Engineers (USACE) is responsible for maintaining the nation’s infrastructure to include ports and harbors through dredging of Federal navigation channels as well as shoreline stabilization. Shoreline stabilization through beach nourishment activities can provide opportunities for reductions in storm surge, flood control, and provide opportunities for residential growth, recreational activities, and coastal habitat restoration (Guilfoyle et al. 2019). Beach nourishment is an effective method for protection and enhancement of coastal development projects but may have detrimental impacts on marine life (e.g., nesting sea turtles and shorebirds). The objective of this report is to examine all elements of the beach nourishment process including active beach construction, entrainment of marine turtles in hopper dredges, beach protection and hard structures, beach profile features, compaction and shear resistance, artificial lighting, marine turtle nest relocation, and nesting habitat factors. Recommendations for mitigating and minimizing these impacts are provided.

  • Inspection confirms complaint of buried waste at Elk Creek Dam

    Army technicians investigation confirms the presence of buried waste after a former contractor employee’s complaint with Oregon Department of Environmental Quality (ODEQ), at Elk Creek Dam. Elk Creek Dam is 26 miles north of Medford, Ore., and the U.S. Army Corps of Engineers, Portland District published its site inspection report on Mar. 30, 2022. In it, the Portland District concluded it would need to investigate the site further to determine the full extent of contamination. There are potential impacts to ground and surface water in the area.

  • Toward the Electrochemical Detection of 2,4-Dinitroanisole (DNAN) and Pentaerythritol Tetranitrate (PETN)

    Abstract: Analytical methods to rapidly detect explosive compounds with high precision are paramount for applications ranging from national security to environmental remediation. This report demonstrates two proof-of-concept electroanalytical methods for the quantification of 2,4-dinitroanisol (DNAN) and pentaerythritol tetranitrate (PETN). For the first time, DNAN reduction was analyzed and compared at a bare graphitic carbon electrode, a polyaniline-modified (PANI) electrode, and a molecularly imprinted polymer (MIP) electrode utilizing PANI to explore the effect of surface-area and preconcentration affinity on the analytical response. Since some explosive compounds such as PETN are not appreciably soluble in water (<10 μg/L), necessitating a different solvent system to permit direct detection via electrochemical reduction. A 1,2-dichloroethane system was explored as a possibility by generating a liquid-liquid extraction-based sensor exploiting the immiscibility of 1,2-dichloroethane and water. The reduction process was explored using a scan rate analysis to extract a diffusion coefficient of 6.67 x 10⁻⁶ cm/s, in agreement with literature values for similarly structured nitrate esters. Once further refined, these techniques may be extended to other explosives and combined with portable electrochemical hardware to bring real-time chemical information to soldiers and citizens alike.

  • Army Corps to receive more than $100 million in President's proposed fiscal 2023 budget for Civil Works projects in Chesapeake Bay region

    The President’s proposed budget for fiscal 2023 released March 28, 2022, includes more than $100

  • Design, Construction, and Testing of the PFAS Effluent Treatment System (PETS), a Mobile Ion Exchange–Based System for the Treatment of Per-, Poly-Fluorinated Alkyl Substances (PFAS) Contaminated Water

    Abstract: Poly-,Per-fluorinated alkyl substances (PFAS) are versatile chemicals that were incorporated in a wide range of products. One of their most important use was in aqueous film-forming foams for fighting liquid fuel fires. PFAS compounds have recently been identified as potential environmental contaminants. In the United States there are hundreds of potential military sites with PFAS contamination.The ERDC designed and constructed a mobile treatment system to address small sites (250,000 gallons or less) and as a platform to field test new adsorptive media. The PFAS Effluent Treatment System (PETS) has cartridge filters to remove sediments and a granular activated carbon (GAC) media filter to remove organic compounds that might compete with PFAS in the ion exchange process, although it may also remove PFAS too. The last process is an ion exchange resin specifically designed to remove PFAS to a target level of 70 ng/L or less (equivalent to the US Environmental Protection Agency (EPA) Drinking Water Health Advisory). The system was tested at Hurlburt Field, a US Air Force facility in Florida and at Naval Support Activity (NSA) Mid-South in Millington, TN.