Environmental Site Assessment (Environmental Due Diligence)

The Environmental Site Assessment (ESA) is a process of evaluating the environmental liability of a real estate asset. Environmental liabilities are one of the most common reasons for incurring unexpected expenses in connection with the purchase of a commercial property. These unforeseen liabilities can even result in business owners not being able to use a commercial property for its intended purpose, preventing them from getting back their investments. Environmental Due Diligence (EDD), a process of assessing the environmental conditions of a property in connection with a property merger or acquisition (MA) , is important for investors to be aware of the potential environmental liabilities.

GBP provides an One Stop Service for voluntary-based ESA/EDD or mandatory soil and groundwater monitoring required by Ministry of Industry, Thailand. GBP performs an EDD from the view of our client.

Our service includes;
• Planning of ESA / Proposal on EDD
• Site visit and interview with a person with good knowledge of the site
• Installation of groundwater monitoring wells
• Sampling of soil and groundwater
• Laboratory analysis of the soil and groundwater samples
• Preparation of a factual report
• Preparation of a report submitted to the Ministry of Industry

GBP adheres to the following ASTM standard for conducting Phase I and Phase II Environmental Site Assessments to the extent possible in the context of Thailand. • ASTM E1527-13  Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process • ASTM E1903-11 Standard Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process


• A site visit to observe current and past conditions and uses of the property and adjacent properties
• A review of historical records, such as historical aerial photographs and historical topographic maps
• Interviews with current and past property owners, operators, and occupants, or others related
• Drilling and environmental sample collection, including soil and groundwater samples
• Installation of groundwater monitoring wells
• Laboratory testing of soil and groundwater samples
• Identifying the extent of environmental contaminants found during the Phase II Environmental Site Assessment process.
• Determining the amount of soil and groundwater impacted by environmental contaminants
• Develop and implement a Remedial Action Plan to remove environmental contaminants from the property