Drones in Construction

Hill Environmental Group, Inc. is an environmental construction services firm that primarily operates in the North East United States. Since 2015, they've slowly been incorporating drones into their day-to-day operations, managing excavations, hazardous waste disposal, monitoring site safety conditions and keeping their project stakeholders engaged and aware of their project.

Supporting Surveyors With UAVs

Surveyors have long used both airborne photogrammetry and terrestrial LiDAR solutions to help model large or hard to access sites, but this can be prohibitively expensive for some projects. With the advent of drone-based photogrammetry, surveyors are incorporating drones into their projects to perform them faster and more frequently, at higher margins.

Unmanned Aerial Systems for Environmental Due Diligence

EPA defines “All appropriate inquiries” as a process of evaluating a property’s environmental conditions and assessing potential liability for any contamination. All appropriate inquiries must be conducted to obtain certain protections from liability under the federal Superfund Law (CERCLA). The specific reporting requirements for all appropriate inquiries are provided in 40 CFR §312.21 §312.31 of the final rule. The results of the inquiry are typically documented in a Phase 1 Property Environmental Site Assessment. Recommendations for the conduct of a Phase 1 ESA are published in ASTM E1527-13, Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process and contain requirements for a records review, including historical aerial photography, a site inspection, and surrounding area survey. The Phase 1 ESA “shelf life” is generally good for 180 days. Thereafter, it should be updated including a new visual inspection.

Thermal Waterway Inspections

Remote sensing has long been used for riverine and riparian inspections. Using thermal sensors to identify areas of ground water upwelling, surface water runoff, point-source pollution, seeps and other features can provide novel insights when characterizing a waterway.

Digital Site Modeling

Being able to visualize a project remotely or in the office can save time and money and help keep project stakeholders in the loop. Being able to take accurate measurements from the data can help engineers and other professionals make educated decisions without putting anyone in the field. In this article we share a 3D model and show off a few measurements.