US Environmental Protection Agency
LCA Environmental, Inc. provides consulting and support for regulatory compliance with federal EPA programs.
Most states, particularly Texas, are delegated states. This means that the state environmental agency, for instance the Texas Commission on Environmental Quality (TCEQ), administer federal EPA programs.
EPA approved the All Appropriate Inquiry standard in late 2005. This became the central aspect of the ASTM E1527-05 standard for Phase I Environmental Site Assessments.
Texas environmental regulations may be more stringent than federal standards, but may not be less stringent.