What is an Environmental Site Assessment?


D3G, formally known as Dominion Environmental Group, originated as an environmental due diligence firm founded by Rob Hazelton in 1994. Early on, Rob encountered a complex and convoluted environmental process that few wanted to understand. Our team built upon this opportunity, and over 29 years later, we have developed a deep understanding of industry standards, procedures, and regulatory requirements, making the process as efficient as possible for our clients. Our subject matter experts and highly-trained staff help you navigate the complex world of environmental assessments, guiding you through any unexpected issues that may arise. We take pride in producing high-quality reporting at competitive pricing, remaining ready and available while your deal moves to completion. 


aerial view of multifamily housing

What is an Environmental Site Assessment?

An Environmental Site Assessment (ESA) is a process that evaluates properties and their surrounding areas for current and historical land uses, operations, and hazards. This assessment aims to identify potential environmental liabilities associated with a property, such as hazardous materials or contamination, and to assess the potential impact of these liabilities on the environment and human health. 

An ESA typically involves thoroughly reviewing historical records and site plans, visually inspecting the property and surrounding areas, and testing the soil, groundwater, and surface water samples. The assessment may also include an evaluation of indoor air quality and the presence of mold, asbestos, or lead-based paint. 

Based on the findings provided by the ESA, recommendations are provided for any necessary remediation, mitigation, or monitoring measures to address any environmental concerns or liabilities. An ESA is typically required as part of due diligence activities associated with real estate transactions or financing, and for compliance with environmental regulations.

Who can Conduct an Environmental Site Assessment? 

An ESA must be performed by an Environmental Professional (EP) or conducted under the supervision or responsible entity of the EP. An Environmental Professional possesses the education, training, and experience necessary to exercise professional judgment to develop opinions and conclusions regarding conditions to meet the objectives and performance factors designated by HUD

What are the Components of an Environmental Site Assessment?

The four components of an ESA are described below: 

  • Records Review of historical sources of information and federal, state, Tribal, and local government records. 
  • Site Reconnaissance of the subject property and a visual survey of the adjacent properties to evaluate the potential for Recognized Environmental Conditions (RECs).
  • Interviews with past and present owners, operators, and occupants, as well as local government. 
  • A Report includes findings, opinions, conclusions of the Environmental Professional, supporting documents, and identification of any data gaps. 


Why Choose D3G?

D3G offers Phase I ESA, Phase II ESA, asbestos, lead-based paint, and radon testing, in addition to following National Environmental Policy Act (NEPA) Compliance. Our full-spectrum of services allows us to work with you from concept to closing, allowing for clear communication and concise planning. We tackle the most challenging projects across the country and have successfully guided many property owners and lenders through the process of evaluating and mitigating risk. Our staff has experience in producing reports for nearly 50 states to ensure that your property is within compliance. 

Want to read more about our environmental services? Check out our website for more details about all the services D3G offers!