Engineered Horizontal Remediation Wells were successfully designed and installed by Directional Technologies, Inc. to achieve hydraulic control of a capped Resource Conservation and Recovery Act (RCRA) hazardous waste landfill. Introduction A closed RCRA landfill containing residues from the manufacture of organic…
Recently Directional Technologies, Inc. installed a Horizontal Sub-Slab Depressurization Well System at the site of a former dry cleaning facility. Read the following horizontal well case study to learn how it was accomplished. Horizontal Wells Protect Indoor Air By Seth…
Michael J. Sequino (Directional Technologies, Inc.), William G. Soukup, P.G. (Cornerstone) and William J. Lee (de maximis) Link to PPT: Battelle 2016 – Using Horizontal Extraction Wells to Contain Chlorinated Compounds Near Landfills The Challenge Vertical wells at the landfill required…
Glenn Nicholas Iosue, P.E. and Michael J. Sequino, E.E., Directional Technologies, Inc. Link to PDF: Battelle 2016 2 – Horizontal Electrical Resistance Heating The Challenge Electrical Resistance Heating (ERH) was the selected remedial approach to address a DNAPL plume of tetrachloroethylene…
Glenn Nicholas Iosue, P.E. and Michael J. Sequino, E.E., Directional Technologies, Inc. Link to PDF: Battelle 2016 1 – Active Vapor Mitigation wth Horizontal Wells Introduction Vapor Intrusion (VI) is a potential concern at any building; existing or planned, located…
How do you install a remediation system at a facility that never shuts down? By using a directional drill for the installation of 21 horizontal biosparge wells. That’s just what one consulting firm did at a bulk fuel terminal in…
After 30 years of not reaching cleanup standards using vertical wells, horizontal wells with biosparge technology were chosen by a frustrated client. Where vertical wells were limited, horizontal wells were chosen because they are better able to target the source…
The scene was a typical urban residential area comprised of a line of row houses along a busy city street. Under the street and below the building was a world of underground systems including sewer, water and gas lines. Within…
Gloucester, MA, a city split in half by the Annisquam River, has had a notorious history of water main breaks, leaving parts of the city without H20 for an extended period of time. Desperate to solve this long-time problem,…
Garry Van Heest, Directional Technologies Inc., North Plains Industrial Drive, Wallingford, CT, USA, Michael Sequino, Directional Technologies Inc., North Plains Industrial Drive, Wallingford, CT, USA Presented at the 29th Annual International Conference on Soils, Sediments, Water, and Energy, October 21-24, 2013, University…