Phase I Environmental Site Assessments
TGC performs Phase I Environmental Site Assessments (ESA) for both individual parcel sites and multi-mile corridors in urban and rural areas. TGC is in the unique position of providing ESAs at the inception of a project; we often go on to obtain federal or state funding, complete the Categorical Exclusion or similar environmental clearance, and manage the project until and after completion. This provides a clear perspective on a project from the very early stages, and a wholistic big-picture view when performing the ESA that is often lacking.
The general objective of an ESA is to provide protection from liability when acquiring real estate and support an Innocent Landowner Defense if contamination is present. An ESA reviews available data regarding a subject property/corridor and provides an opinion regarding the presence or absence of potential environmental impacts from current or past uses of the site. A Phase I ESA is conducted based on the American Society for Testing and Materials (ASTM) Standards E1527-13 and E2247-16 (rural) and 40 CFR Part 312 Standards andPractices for All Appropriate Inquiries (AAI). For projects in the City of Houston, additional specifications from the Department of Public Works and Engineering Infrastructure Design Manual“Phase I Environmental Site Assessment (ESA I) Requirements” must be followed. READ MORE