Technical Assistance and Advisory Services

Technical Assistance and Advisory Services

Expert Review of Vendors Contamination Assessment Reports

SLP Environmental was appointed as the buyers technical advisor by an international specialty chemicals company with respect to the potential purchase of a five hectare industrial property in Samut Prakarn, Thailand. The assignment was part of the clients pre-acquisition due diligence process and SLP Environmental’s primary role was to provide independent technical review and professional advisory services.

SLP reviewed the vendors Phase 1 and 2 Environmental Site Assessment (ESA) reports with the primary objectives of:

  • Assessing whether the Phase 1 and 2 ESA studies conformed with practice presented in ASTM E15-27-13 and E1903-11 respectively;
  • Assessing whether any potential Recognised Environmental Conditions (RECs) were missed in the vendor commissioned studies;
  • Assessing whether all the potential Likely Release Areas for contaminants had been adequately identified and adequately investigated;
  • Assessing whether all the potential Contaminants of Concern (CoCs) had been identified;
  • Assessing whether the subsurface conditions at the property had been adequately characterised; and
  • Preparing an Action Plan to address any identified shortcomings and reduce the associated uncertainties with respect to the contamination status of the property.


SLP’s technical review revealed significant shortcomings in the vendors soil and groundwater contamination assessments for the property, most notably that the former landuses and activities at the subject property had not been sufficiently characterised leading to significant gaps in the studies.

Foremost amongst these was the failure to analyse for numerous contaminants of concern in the recovered soil and groundwater samples that could have reasonably been expected to have been present based on the former landuses at the property.

SLP Environmental assessed that the scope and depth of the vendors contamination assessment studies was insufficient to adequately characterize risk conditions at the property and that further supplementary site characterization works were required.