GES completed the annual inspection of over 100 miles of natural gas pipeline in Pennsylvania and West Virginia for a large U.S. natural gas producer. The inspections were part of the Pipeline & Hazardous Materials Safety Administration’s (PHMSA) federally regulated program for pipelines and pipeline operations. GES employed the use of small unmanned aircraft systems (sUAS) equipped with an Optical Gas Imaging (OGI) camera, which detects and visualized hydrocarbon gases. Our FAA-licensed pilots were trained in accordance our client’s PHMSA-required Operator Qualification (OQ) program.

GES initiated rapid response activities immediately following release confirmation to assess the source, extent, and nature of subsurface unleaded gasoline impacts both onsite and offsite on downgradient residential properties; and mitigate further source migration and vapor intrusion impacts.

Challenge

The client, the Pennsylvania Department of Environmental Protection (PADEP), required an extensive site-wide soil investigation to develop a plan for site remediation to reuse this former landfill and scrap yard property as a public park. Constituents of concern included polychlorinated biphenyls (PCBs); metals, such as arsenic and lead; and petroleum compounds 

Challenge

The identification of a trichloroethylene (TCE) plume impacting groundwater in a village within the “Amish Country” of Pennsylvania pressed the need for immediate investigation and action. Residents in this local tourist and commercial hub relied on groundwater as their sole source of potable water. 

Client Challenge

The identification of a trichloroethylene (TCE) plume impacting groundwater in a village within the “Amish Country” of Pennsylvania pressed the need for immediate investigation and action. Residents in this local tourist and commercial hub relied on groundwater as their sole source of potable water.

Client Challenge

A long-time client and major petroleum marketer is pursuing a real estate transaction that would result in the sale of more than 1,200 active retail service station properties across the United States. As a requirement of the sales agreement, the client needed to conduct a Phase I environmental site assessment (ESA) for each site within an 11-week period. The properties ranged in size and geography, including service stations along major toll roads and interstates, rural roads, and busy, urban locations.

Client Challenge

A secure naval nuclear propulsion research and development complex faced compliance and operational concerns related to an aging spring and seep water treatment system. Regulatory drivers required the treatment of low-level chlorinated volatile organic compounds (CVOCs)-contaminated influent to less than one part per billion, with wide seasonal variations in water flow rates.