Site Assessments Services

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In partnering with our clients to evaluate the presence or extent of contaminants on their properties, we combine an in-depth knowledge of the site history, geology and hydrogeology, economic and environmental goals, and state and federal regulatory requirements. A site assessment may take on many forms, depending on the complexities of the site. Etech’s staff has performed thousands of site assessments of varying complexities for our clients and within the regulatory framework that drives the majority of our clients work, our staff demonstrates daily expertise in the following regulations:

Other Unique Benefits Include:

  • Resource Conservation and Recovery Act (RCRA)
  • Comprehensive Environmental Response Compensation, and Liability Act (CERCLA)
  • Toxic Substances Control Act (TSCA)
  • Clean Water Act (CWA)
  • Clean Air Act (CAA)
  • Safe Drinking Water Act (SDWA)
  • Underground Injection Control (UIC) Programs
  • Spill Prevention Control & Countermeasures (SPCC)
  • Surface Mining Control & Reclamation Act (SMCRA).


The following are descriptions of a few of the types of site assessments our staff can perform.

Surface and Subsurface Soil Investigations
Etech continues to be a recognized leader in all types of soil investigations. Any good soils investigation starts with a basic understanding of site history and local geology. With this information, Etech can develop cost-effective approach to your soil investigation needs. To ensure the technical adequacy, accuracy, and cost effectiveness, Etech staff maintains an in-depth understanding of many different types of drilling techniques including:

  • Direct Push Technology
  • Hollow-Stem Auger
  • Solid-Stem Auger
  • Core
  • Air-Rotary
  • Mud-Rotary
  • Rotosonic

At Etech, an effective surface or subsurface investigation begins with an intimate understanding of the sites environmental chemistry and the selection of the correct type of analytical testing for site-specific conditions. Etech’s tenured environmental professionals can make the determinations necessary to produce a comprehensive and costs-effective analytical program. We utilize state-of-the-art field screening techniques and maintain a network of reliable and precise analytical laboratories to help ensure that our staff provides the very best service to our clients.

Our staff has successfully conducted hundreds of groundwater investigations. With our knowledge of drilling techniques, site history, and local hydro-geologic conditions, we can design a cost-effective solution to solve your groundwater liability issues. Etech’s specialized groundwater investigative skills include, but are not limited to:

  • Groundwater Modeling
  • Aquifer Testing
  • Soil Hydraulic Properties Screening
  • Dedicated Monitoring Equipment
  • Groundwater Chemistry
  • Monitoring Well Design & Installation
  • Micropurge Sampling Techniques
  • Characterization of Nonaqueous Phase Contaminants (LNAPL and DNAPL)
  • Expert Testimony
  • Risk-Based assessment
  • Field-Based Analysis of Soil and Water Chemistry


In many instances, Etech’s staff has been able to take on projects from other consultants and obtain timely regulatory closure, where our previous competitors fell short.

In cases where impacted surface waters are involved, Etech’s staff is trained in many of the industry-accepted practices of sampling both surface water and sediments. Starting with an understanding of site history, site and local drainage features, and knowledge of upstream influences, our staff can design a quality surface water-sampling program to meet your needs. The following are just a few of the specialty surface water assessment tools that we utilize:

  • Surface Water Modeling
  • Dedicated Monitoring Equipment
  • Stream Flow Measurement
  • Surface Water Chemistry
  • Field-Based Analysis of Water & Sediment Chemistry
  • Isokinetic & Non-Isokinetic Samplers
  • Sample Filtration Requirements and Techniques

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