Phase 1 Environmental Assessment Resources

Phase I Environmental Site Assessment

Main Phase 1 Environmental page.

Updated items from ASTM Standard E-1527-13:

As of December 31, 2013, EPA finalized a rule that the ASTM Standard E-1527-13 is a standard by which parties may comply with the "All Appropriate Inquiries" Rule, 40 CFR Part 312. EPA indicated that it does intend to propose an amendment to 40 CFR Part 312 removing reference to the E1527-05 standard. EPA does recommend that the new standard be used.

The standard does not have any substantial changes to the previous standard. Items such as vapor intrusion and regulatory file reviews are something that our company has conducted previously as part of a “common sense” approach to identifying potential significant environmental liabilities based on proper scientific analysis of available information that helps determine the potential for releases into the soil and/or groundwater at a property. The standard includes the following clarifications and revisions.

Phase I Environmental Site Assessment ASTM Standard E-1527-13 for Phase I Environmental Site Assessments Environmental Phase I


Phase I Environmental Site Assessment wetlands

Additional Scope of Work Required by 40 CFR Part 312 for Phase 1 Environmental report.

Innocent Landowner's Defense

Entities that acquire property and had no knowledge of the contamination at the time of purchase may be eligible for the "innocent landowner" (ILO) defense to Superfund/CERCLA liability. For a more detailed discussion of this type of defense, we recommend reading the United States Environmental Protection Agency (USEPA) discussion here:

Innocent Landowners.

Phase I Environmental Site Assessment Advice

The ESA report is a specific study for the presence or potential presence of hazardous substance or petroleum product releases into the soil and/or groundwater, as well as, into structures, which can migrate through the floor to the subsurface. The Phase 1 ESA report does not include the study of building materials or building systems. To obtain a proper report, you should hire a geologist, engineer or scientist with knowledge of soil science, groundwater hydrology and regulatory conditions. The most common types of environmental liabilities that are found during real estate transactions are things like: leaking underground storage tanks, leaking hazard waste containers, spills and other subsurface contamination. These are the issues that need to be addressed in a more immediate manner, in order to occupy the property, redevelop or to get a loan or to buy/sell the property.

Standard for Phase 1 Environmental

Since the ASTM Standard is copyrighted, we cannot post a copy here. However, you can read a summary by clicking the following link and you can purchase a copy at the American Society of Testing & Materials, as well.

American Society for Testing & Materials Standard E-1527-13 Standard Practice for Environmental Site Assessments: Phase 1 Environmental Site Assessment Process

From Los Angeles to the Bay Area to San Diego to Oakland to San Francisco to Seattle to Denver to Dallas to Houston and to Nashville, Memphis, Knoxville and Chattanooga to Atlanta to Miami and Orlando, AAI conducts Phase I Environmental Site Assessments throughout the country regularly, also including: Austin, San Antonio, Spokane, Phoenix, Louisville, Birmingham, Huntsville, New Orleans, Charlotte, Raleigh, Indianapolis, New York, Columbia, Cleveland, Columbus and Cincinnati.



Phase One Environmental Environmental Phase One