Pre-Acquisition Due Diligence in Downtown San Antonio

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Services Performed

ESE performed pre-­acquisition due diligence for two contiguous city blocks in downtown San Antonio, Texas with development history dating back to the late 1800’s. The Due diligence scopes of work consisted of Phase I Environmental Site Assessments (ESAs) to identify recognized environmental conditions on each property. Phase II ESAs were conducted on each property to assess soil and groundwater characteristics and determine if chemicals of concern were present at concentrations above regulatory limits.


ESE’s objective for the project was to identify any areas of the property with the potential for chemical of concern (COC) impacts to soil or groundwater and to determine if any identified COCs were above regulatory limits or present at levels that would hinder or complicate construction activities for a high rise office building.

Scope of Work

ESE’s scope of work included the following:

  • Complete ASTM Spec Phase I ESA for each property/City block.
  • Complete Phase II ESA for each property to confirm or deny the presence of COCs
  • Completed Asbestos Containing Material (ACM) survey of structures likely to be demolished
  • Communicate results to client and advise as to level of potential impacts to construction processes due to environmental site conditions

Key Benefits to Client

  • Completed environmental assessment work within due diligence period
  • Provided client with necessary information to factor into purchase evaluation
  • Identification of likely requirements during construction activities to deal with environmental issues