ERG worked with our partners at Bluestone to develop a GIS-based predictive archaeological sensitivity model for the areas where construction was proposed for NASA's Scientific Balloon Program Supplemental Programmatic Environmental Assessment (PEA). The team used the model to evaluate the potential environmental effects of adding a new scientific balloon launch site in Burns, Oregon, and additional improvements at the existing Fort Sumner, New Mexico and Palestine, Texas launch sites. Pertinent existing documentation and studies with respect to cultural and archaeological resources at each of the three sites were compiled and evaluated. A predictive archaeological sensitivity model was developed in lieu of conducting a field survey for the proposed improvements. The model classifies areas as having low, medium, and high probability of containing significant archaeological resources.

ERG provided drone videography as part of the Hays County, Texas Road Bond Program under HNTB Corporation. Hays County and HNTB used these videos to showcase three of these projects for the public. From 2023 to 2025, ERG filmed the traffic patterns before and after construction, showcasing the enhanced traffic flow and improved safety conditions. Using cutting-edge technologies like DroneLink and Adobe Premiere Pro, we created engaging videos that Hays County published on the County website and were shared through official social media accounts.

US Army Futures Command Institutional Controls Management Task - ERG supported the United States Army’s Cleanup Program at various Base Realignment and Closure (BRAC) and non-BRAC Excess Installations across the country by creating innovative geospatial dashboards to support Institutional Controls (ICs) management. The BRAC program involves transferring former Army property to other federal agencies and communities, often with restrictions known as ICs to minimize human exposure to contamination and protect the integrity of the remedy. To help manage these ICs, ERG developed a web-based, spatial application using ArcGIS Online. This application integrated geospatial data and program documents, providing query and reporting capabilities, and included a document library with relevant cleanup documentation. Technologies used included ArcGIS Pro, Spatial Analyst, 3D Analyst, Experience Builder for ArcGIS, Python, and more.

ERG conducted GIS-based environmental constraints analysis and mapping for 34 solar farm and energy storage facility candidate sites across Maine, Massachusetts, New Jersey, New York, Pennsylvania, and Virginia. Our GIS specialists consulted hundreds of geographic constraints datasets from the states’ public archives, digitally overlaying these constraints against proposed site locations. We evaluated potential impacts based on client-provided criteria and fed the results into a prioritization matrix. Deliverables included over 300 maps, such as USGS topographic overviews, ownership/tax overlays, floodplains, wetlands, streams, USDA soils, local land use, natural and cultural resources, scenic or aesthetic resources, and vegetation/forested areas to be cleared. This framework helped rank the projects according to environmental constraints and shovel-readiness.

ERG conducted geophysical surveys at the historical Evergreen Cemetery to support the City of Austin's efforts to expand burial capacity in two cemetery sections. Using digital dual-band Ground-Penetrating Radar (GPR), our team performed intensive geophysical remote sensing along 50-centimeter linear transects to identify potential unmarked burials and other subsurface features. The data collected from these surveys provided valuable insights that informed the City of Austin's decisions regarding the expansion of burial plots in a respectful and informed manner. By leveraging advanced geophysical techniques, we ensured that the survey was non-invasive and minimized the risk of disturbing existing graves.

ERG collaborated with the St. Louis District of the U.S. Army Corps Engineers (USACE)'s Mandatory Center of Expertise for Curation and Management of Archaeological Collections (MCX-CMAC) to digitize and inventory construction plans and documents related to the Albeni Falls Hydroelectric Dam, built in the late 1950s and early 1960s. With repairs and upgrades underway at the time of ERG’s involvement, the scanning effort was particularly timely. Our team scanned and digitized 61 boxes of archival materials, including large format design drawings, photographs, slides, negatives, scrapbooks, and other historical documents. We conducted technical reviews of each of the 40,000+ digital scan files to ensure accuracy and compliance with USACE's standards. The digitization project significantly enhanced the accessibility and preservation of these historical records, ensuring their longevity and usability for future research and reference. Additionally, metadata was embedded in each file.

ERG’s efforts were well-received, prompting the St. Louis District’s representative to report: "The digitization of the Albeni Falls Dam archives has been a transformative project, preserving our historical records and making them accessible for ongoing research and reference. ERG’s meticulous approach and technical expertise have been invaluable in achieving this goal."