Your client calls saying an underground storage tank (UST) used to store gasoline has failed, releasing thousands of gallons under his busy machine shop. “Not a problem – I’ll mobilize a small drill rig and we’ll install a network of…
Your client calls saying an underground storage tank (UST) used to store gasoline has failed, releasing thousands of gallons under his busy machine shop. “Not a problem – I’ll mobilize a small drill rig and we’ll install a network of…
Brownfields redevelopment hasn’t gotten any easier under the new Vapor Intrusion regulations. Source that could previously be left in place must now be removed, and once source remediation is complete, subslab mitigation must operate for many years, until stringent indoor…
Project Description: Remediate a plume of trichloroethylene (TCE) under multiple military buildings by two types of horizontal remediation wells: air sparging (AS) and soil vapor extraction (SVE). There are two target zones: the shallow zone is approximately 70′ below grounds…
The Issue The New Jersey Department of Environmental Protection (NJDEP) mandated groundwater and soil sampling under an active pharmaceutical company manufacturing building in order to address vapor intrusion inside the building. Installation of vertical borings and vertical wells through the…
Where Is Vapor Intrusion a Concern? Vapor Intrusion is a potential concern at any building – existing or planned, located near soil or groundwater contaminated with volatile organic compounds. Examples include current and former manufacturing and chemical processing plants, warehouses,…
A 1000-gallon trichloroethylene (TCE) spill created an 800-foot long, narrow plume in saprolite and weathered bedrock that embodies the classic heterogeneity challenges to insitu remediation. Gravity drove the dense, non-aqueous liquid (DNAPL) 120 feet downward at varying rates, producing a vertical…
It is an unfortunate consequence of the clustering of commercial businesses such as gas stations, automotive service shops, and dry cleaners at busy city intersections that groundwater contaminant plumes often migrate across such intersections, just below the water table. An…
Directional Technologies, Inc. was contracted to design and install a horizontal well soil vapor mitigation system. The horizontal well had to be installed under the slab in the fill material. The decision to place the well in the fill material was…
Horizontal Wells Horizontal Remediation Wells use horizontal drilling technology to remediate contaminants in soils and groundwater. It is usually a cheaper, more efficient, less intrusive and more sustainable (less energy, lower carbon footprint) alternative to excavation and landfilling. Horizontal wells…
Directional Technologies assists Samsung Corporation with innovative horizontal remediation well installation for the Yongsan District “Dream Hub” Project in Seoul, South Korea Site Background Dream Hub is a massive $40 billion redevelopment project in the heart of Seoul, South Korea…