What is the difference between ASTM 1527-05 and Standards and Practices for All Appropriate Inquiries (40 CFR Part 312)?
Either assessment method may be utilized as part of the process to qualify as an innocent landowner, contiguous property owner or bona fide prospective purchaser under CERCLA.

What is the shelf life of a Phase I?
The AAI assigns a one year shelf life from the date of property purchase with some components needing to be reevaluated within 180 days from the property acquisition.

Will the ASTM 1528 Standard Practice for Limited Environmental Due Diligence: Transaction Screen Process, qualify as an innocent landowner, contiguous property owner or bona fide prospective purchaser under CERCLA?
No, an environmental screening inspection is not adequate enough to qualify the user as an innocent landowner, contiguous property owner or bona fide prospective purchaser. It is however, still a means to investigate for potential environmental concerns.

What is not included in a Phase I assessment?
A few non-scope items that are not included in a phase I site assessment are identification of asbestos-containing materials, lead based paint and radon testing or wetlands delineation.

What is the user responsible for?
The user of the environmental site assessment is typically responsible for investigating the subject site for any environmental liens or activity and use limitations. The Environmental Professional does not assess reasons for a significantly lower purchase price as compared to fair market value.

Is sampling required as part of a Phase I Environmental Site Assessment?
Phase I Environmental Site Assessments do not include any testing or sampling of materials. The Environmental Professional may use testing to fill data gaps as necessary.