ECA Geophysics

ECA Geophysics has performed ground-penetrating radar (GPR), utility locating, seismic refraction profiling, Refraction Microtremor or ReMi (similar to MASW) IBC Site Class studies, electromagnetic / magnetic surveys and other geophysical surveying services in the States of Arizona, Alaska, Idaho, California, Colorado, Montana, North Dakota, Oregon, Utah, Washington and Wyoming. We can provide these services nationwide.

ECA Geophysics assists clients in the following technical areas:

Environmental Geophysics
Locating shallow metallic and nonmetallic pipes, buried waste, drums and tanks
Landfill boundary delineation

Geotechnical Geophysics
Determining the IBC / NEHRP Site Classification (Vs 30)
Mapping depth to bedrock
Determining Vs and Vp of subsurface soils, that allow you to derive Poisson’s Ratio and Young’s Modulus

Construction Geophysics
Utility and rebar locating
Locating buried infrastructure and voids
Mapping depth to bedrock

Groundwater Geophysics (Hydrogeophysics)
Locating groundwater or water-bearing zones
Mapping depth to bedrock

In 2014, USA TODAY voted the Colorado School of Mines the Number 1 engineering college in the USA. ECA Geophysics personnel have taught or have earned graduate geophysics degrees from this top-ranked school.

Feedback from satisfied clients

ECA Geophysics was hired to perform an electrical resistivity survey for a site in Colorado where we were overseeing a hydrogeological characterization study.  ECA Geophysics performed the field survey in a safe and efficient manner. The data collected allowed us to better interpret the depth of the aquifer across the site, which supported refinement of the conceptual model and assisted us with locating future monitoring locations.  We look forward to working with ECA Geophysics again on future projects.
 Leah Wolf Martin PE, PG – Hydrogeologist with AJAX Ltd.

Mr. Smith (ECA Geophysics) was hired by the Columbia Generating Station (nuclear facility) to provide ground (penetrating) radar (GPR) detection services for a 16-acre evaporation pond project for which I was the lead engineer. Mr. Smith worked with the project schedule that required him to use GPR to survey rolling terrain that was the 30-year old construction preparation site for the nuclear plant. Mr. Smith worked alone crisscrossing the site in over 100 °F heat for over a week locating all the buried debris and electrical wiring that served the old trailers. Mr. Smith was conscientious and timely, as well as flexible when areas of concern were further investigated. The resultant location of the hidden obstructions was very helpful as the multiple pond construction project was carried out. I would not hesitate to re-hire Mr. Smith, if GPR services were again required.
Steve J. Strecker, PE – Contract Engineer for the Columbia Generating Station

ECA Geophysics has done excellent work for Black & Veatch on our US Air Force range site. The geophysical data set collected in the field by ECA Geophysics was utilized to locate buried debris and anomalies and was considered very thorough and complete. The knowledge and experience ECA Geophysics provided helped guide the investigation and proved invaluable.
Jennifer Canfield, PG – Geologist with Black & Veatch Special Projects Corporation

AECOM conducted an RFI at Galena, Alaska.  Galena is located in a remote part of Alaska and due to its remote, harsh environment fieldwork must be completed efficiently as possible, including “one-time, get it right” equipment mobilization.   ECA Geophysics was selected to perform geophysical surveys during the Summer of 2009.  ECA Geophysics was up to the call and provided timely, cost effective  and efficient survey results at a most challenging jobsite.
Collen J. Brownlow, PE – Project Manager with AECOM Technical Services

ECA Geophysics is a registered subsidiary of Environmental Compliance Associates, LLC, with an office in Boise, Idaho. We design and perform GPR, electromagnetic induction, magnetic, electrical resistivity, seismic refraction, gravity and VLF surveys throughout the United States, including Arizona, Alaska, Idaho, California, Colorado, Montana, North Dakota, Oregon, Utah, Washington and Wyoming.

SOLUTIONS FOR GEOLOGISTS and ENGINEERS Geophysics improves your environmental or construction project with “fill-in” information between exploratory borings. Geophysics is highly effective in the following areas:

  • Drum / tank / debris detection for remedial excavation projects with 80% cost reductions
  • Delineating boundaries for landfill closure projects
  • Bedrock depth and rock rippability for construction projects
  • International Building Code (IBC) site classification (NEHRP seismic stability) for construction projects
  • Soil property (Vs/Vp) data for geotechnical (ie, foundation depth design) projects

We eliminate costly manual grids, by utilizing DGPS guided surveys based upon coordinate systems such as WGS 84 or UTM. Our georeferenced data seamlessly incorporate into your GIS and AutoCAD databases.