Phase 2 Environmental Site Assessment 4

Phase 2 Environmental Site Assessment Report

A Phase 2 Environmental Site Assessment is a subsurface investigation comprised of field testing soil, soil-gas and/or groundwater for a comprehensive assessment of contamination risk. Phase 2 Reports generally include site maps of existing or significant historical land features, as well as information from geophysical surveys.

The Phase 2 Objective

The primary objective of a Phase 2 Environmental Site Assessment is to determine whether contamination exists in the soil gas, soil and/or groundwater underlying a property, as a result of the recognized environmental concerns listed in a Phase 1 Site Assessment Report.

Phase 2 Environmental Site Assessments Include Drilling for Soil Samples

Phase 2 Environmental Drilling

The Phase 2 Environmental Site Assessment Seekers

A property will generally undergo the testing of a Phase 2 Environmental Site Assessment based on the conclusions and recommendations of a recent Phase 1 Site Assessment Report.  However often times at high risk properties, parties directly request a Phase 2 Subsurface Investigation along with a Phase 1 ESA, for a comprehensive understanding of contamination risk.

The Phase 2 Investigation Requirements

Geo Forward Phase 2 Environmental Reports are solely based on the specific job site information.  Geo Forward prepares a customized scope of work for each proposal.  All recommended scopes of work are prepared by a State licensed geologist or engineer, and are designed to be in accordance with the ASTM E1903-11 Standard Guide for Environmental Site Assessments.

A Phase 2 Environmental Site Assessment can Additionally Include the Analysis of Soil-Gas and Groundwater

Phase 2 Environmental Investigation Drilling

The Phase 2 Environmental Site Assessment Process

The general scopes of work vary from site to site, and depend on local geology, chemicals of concern, job site history, and areas of concern.  The scopes of work designed by Geo Forward are intended to meet all the legal requirements and standards.

Depending on the job site, a Phase 2 Environmental Site Assessment Report includes testing of one (or a combination of) of the following: Soil Gas (Shallow and/or Deep); Soil; and/or Groundwater. Most (but not all) Phase II projects will also require a limited geophysical survey, to identify the precise location of underground features, such as tanks, utility lines, pipelines, etc.

If agreed by all involved parties, Clients can also request to customize scopes for a Phase 2 Subsurface Investigation.

Geo Forward, Inc.

Forward-Thinking Geologists, Engineers & Contractors!

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4 thoughts on “Phase 2 Environmental Site Assessment

  • Amy Medina

    Great! Finally some clarity about how a phase 2 environmental site assessment is actually the same as a phase 2 subsurface investigation! I guess every property is different and needs different kinds of testing and drilling. Thanks for the information!

    • Azad A. Kaligi, PG Post author

      Hi Raj,

      An environmental subsurface investigation requires testing soil and soil gas samples from variable depths. Modern day drilling rigs are the best tools we can use to collect undisturbed soil samples in such a short amount of time (and for a lower overall cost).

      Alternatively, one could use a hand-auger to advance borings (hand-drilling). This method isn’t practical because: it is slow; labor intensive; produces environmental waste; and depths are limited. Additionally, some kinds of soils cannot be drilled using a hand-auger. Lastly,hand-augering is not advised for environmental testing, because it is known to disturb to chemical quality of the soil. This results to improper soil and soil gas lab results.

      The ASTM and EPA advised methods of subsurface soil sampling for environmental phase 2 investigations include drilling. Furthermore, it is usually determined to be the most practical and cost-efficient way to do the job.


      Azad A. Kaligi, PG