Buried Channels, Water Exploration, Potential Contaminant Pathways
Buried Channels
The problem
Well records, outcrops, and exploratory drilling are currently used to identify buried channels
Existing water well reports can be lacking in rural areas where few water wells exist.
Other geophysical methods such as resistivity and high-resolution airborne EM may locate approximate locations but cannot accurately characterize the extent, depth and infill material of these valleys.
Echo Geotech’s Solution
Seismic data integrated with existing well records, outcrops, and/or exploratory drilling for cost effective characterization of buried channels and their infill materials
Non-intrusive rapid evaluation of subsurface
Increased vertical resolution (5 times) using shear waves versus current p-wave methods due to high velocity relative to shear waves in unconsolidated materials.
Echo Geotech Advantage
Detailed characterization of buried channels between boreholes for water resources exploration.
Direct the location of drill holes for hydro-geological studies.
Collect data in urban areas with no surface disturbance and image to depths as much as 200m.
Cost for Land streamer profiles over 1 or 2 linear km's is comparable to a single discrete drill hole and may reduce the number of drill tests required and optimize their placement.
The problem
Discrete boreholes used for Water Exploration often miss complex lateral soil changes
Echo Geotech’s Solution
Our system provides continuous profiles between existing boreholes and can optimize placement of new boreholes
One pass collects Pwave (sensitive to fluids) and SH wave (not sensitive to fluids)
Echo Geotech Advantage
Integration of Landstreamer profiles with existing or new boreholes, provide detailed characterization of buried channels for water resources
Integration of P and SH wave data allow direct fluid detection for water table identification
Either filling in geologic information between boreholes OR directing the location of drill holes is a huge benefit to hydro-geological studies.
Collect data in urban areas without intrusion into subsurface and to depths as much as 200m.
Cost for Land streamer profiles over 1 or 2 linear km's is comparable to a single discrete drill hole and may reduce the number of drill tests required and optimize their placement.
Water Exploration
Potential Contaminant Pathways
The problem
Tailings ponds containing toxic chemicals need to be frequently monitored to prevent release
Recent dam collapses indicate underlying soil weakness not previously identified
Common monitoring methods including drilling and CPT’s require intrusive investigation of these dams
Echo Geotech’s Solution
Continuous profiling along the dam face with SH landstreamer identifies weak zones within the dam and has the capability of investigation the soils beneath the earth dams to identify potential contaminant pathways and weak substrata
Echo Geotech Advantage
Establish weak portions of the dam requiring mitigative engineering
Investigate soils structure underneath the dam structures that may have been eroded over time or have high potential of giving way due to low shear strength.
Jointly conduct MASW testing and investigate 10-50m below the existing ground surface in a single pass.
Deliver geologic data, deeper data, high resolution continuous profiles with no surface disturbance or intrusive drilling along the earth dams
Lower cost with the added benefit of optimizing the placement of the more expensive CPT and drill tests if required.