Horizontal Drilling Advancements and Installation using Vertebrae - - PowerPoint PPT Presentation
Horizontal Drilling Advancements and Installation using Vertebrae Wells for Site Assessment University Consortium for Field-Focused Groundwater Research, University of Guelph and G 360 , Guelph, ON June 4-6, 2019 Eric D. Arenberg, P.G., EN
Horizo izonta ntal l Nest Nested ed Wel ell l Sys ystem ems s
Overhead obstructions or subsurface utility issues (powerlines, water, sewer, gas and fiber optics etc.). Client concerns over business disruption at active sites, neighbor issues or site security (military and industrial). Physical limitations related to the built environment or natural terrain
TM Model
HDD Boring Well Screen Grout Grout Well Screen Wells Individually Plumbed to Surface
TM Subsurface Model
identified 400% more contamination.
supports how the wells are effectively isolated.
being tested to ensure longevity.
Total Halogenated Volatile Organic Compounds HVOCs in ppb Groundwater Sample Location
Total Halogenated Volatile Organic Compounds HVOCs in ppb - NS = not sampled CSM indicated shallow mass was 7 times more
Segment (23)
roadway and parking lot
treatment
indicates relative intensity of dosage
a recalcitrant area toward the rear
treatment
simple reproportioning of the treatment scheme to match the plume dynamics.
the treatment in real time.
AS Segments (29) SVE Segments (19)
AS Segments (29) SVE Segments (19)
AS Segments (29) SVE Segments (19)
⚫ High Resolution Site Characterization (HRSC) produces vertical profiles with
varying degrees of “granularity.” Vertebrae TM Well Systems add a dimension to the process. With horizontal assessment we are able, in essence, to create the field of what we are calling High Resolution Contaminant Distribution (HRCD).
⚫ Reduce cost, on a case by case basis, relative to using vertical well systems. ⚫ Compliance criteria in parts per trillion, for polyfluoronated alkylsubstances
(PFAS), has created serious sampling concerns. We are working towards certifying VertebraeTM Well Systems that are certified free of PFAS for relevant projects or simply to protect environments where PFAS might otherwise be introduced via conventional operations.
⚫ Vertebrae TMWell Systems can be factored into permeable reactive barrier
(PRB) designs, both to explore the best transect for placement and to provide a safety factor for more treatment should the PRB underperform.
⚫ There are other applications for VertebraeTMWell Systems, worthy of exploration,
including but not limited to:
– Landfills – Sediment-Groundwater Interface – Vapor Intrusion, as an extraction process, with emphasis on access issues. – Sensor-enabled leak detection of hydrocarbons or brine under storage tanks.