ASTM International publishes the accepted standard for performance of Phase I environmental assessments to evaluate a property’s environmental condition and assess potential liability for any contamination.   U.S. EPA’s “All Appropriate Inquiries” Rule (AAI) recognizes the current ASTM Phase I standard,  ASTM 1527-13, is consistent with the requirements of AAI and can be used to satisfy

An environmental audit is a self-evaluation of current compliance with applicable environmental regulations.  The audit is typically performed by an outside environmental consultant. However, more sophisticated businesses can utilize advanced electronic compliance tools or their own EHS personnel.

An audit can be wide in scope (i.e. compliance with all applicable regulations) or it can review

Phase I Environmental Assessments (Phase I ESA) are the first step in the environmental due diligence process.  A Phase I ESA is a review of available information regarding a property to determine the possibility contamination may be present.  The assessment includes a review of environmental databases, file reviews, interviews with regulators/property owners and a site

ASTM 1527-05 was the first ASTM standard recognized by U.S. EPA as meeting the requirements of the "All Important Inquiries Rule." (AAI)   AAI sets forth the standards and practices necessary for fulfilling the requirements to obtain liability protection (i.e. bona fide purchaser defense) under CERCLA section 101(35)(B).  Most Phase I proposals reference 1527-05.