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### Summary of Updates and Revisions to ASTM E1527 Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process

How E1527

- 13 Differs from E1527

- 05
On November 1, 2005, EPA issued a Final Rule (40 CFR 312) establishing standards and practices for conducting all appropriate inquiries (AAI) as required under sections 101(35)(B)(ii) and (iii) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), as amended. Section 312.11 of the Final Rule s tated that ASTM International Standard E1527

- 05, “Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process” may be used to comply with the AAI requirements

. ASTM International recently revised its 2005 version of the Phase I environmental assessment standard and will be issuing a new, or revised standard , specifically ASTM E1527

- 13 , “Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process.” The ASTM E 1527

- 13 standard is similar to the ASTM E1527

- 05 standard in format, process, and areas of coverage. In fact, many of the sections in ASTM E 1527

- 13 are taken verbatim from the ASTM E1527

- 05 text. The newly revised standard, although essentially congruent to the ASTM E1527

- 05 Phase I Environmental Assessment Standard, provides some clarifications and additional guidance for the environmental assessment of commercial properties and determining whether or not there are recognized environmental conditions at a property or conditions indicative of releases or threatened releases of hazardous substances at a property

. This document presents a summary of the changes ASTM International ma de to the previous E1527

- 05 standard. It is EPA’s finding that the new standard E1527

- 13 remain s compliant with the AAI regulatory requirements

. ASTM International ’s revisions to E1527

- 05 “Environmental Site Assessments: Phase I Environmental Site Asses sment Process” include the following changes
, resulting in the revised standard
, E1527

- 13 :
1. ASTM u pdated the definition of “Recognized Environmental Condition ( REC )

. ”2 The new definition of REC is: “the presence or likely presence of any hazardous substances or petroleum products in, on, or at a property due to release to the environment; under conditions indicative of a release to the environment or under conditions that pose a material threat of future release. De minimis conditions are not recognized environmental conditions.”

The revised definition align s with the A ll A ppropriate I nquir ies Rule provision that site assessments be conducted with a goal of identifying “conditions indicative of

re leases and threatened releases of hazardous substances on, at, in , or to the subject property.” The revised ASTM definition of REC retain s some of the additional guidance from prior versions of the E1527 s tandard.

2. ASTM u pdated its definition of “Histor ic al Recognized Environmental Condition (HREC) .”

The definition was re vised to clarify that the scope and application of an HREC is limited to include only past releases that have been addressed to unrestricted residential use

. In addition, the new term “Controlled Recognized Environmental Condition” is defined to include past releases that have been addressed but allow contamination to remain in place

. 3. ASTM added a definition of “Controlled Recognized Environmental Condition ( CREC ) to the standard .”

This term was added to further clarify that “historical recognized environmental conditions (HRECs) describe conditions where past releases were addressed at a property to the level of allowing for unrestricted residential use. A “con trolled environmental condition” describes the condition where previous releases at properties that underwent risk

- based closures were addressed
, but contaminants are allowed to remain in place under certain restrictions or conditions

. 4. ASTM added a c larifi cation t o the definition of “de minimis condition

. ” The revision makes it clear that environmental profession al s should not use this
term to describe a CREC . This revision provides the prospective property owner with added assurances that the Phase I will provide necessary and available information on past corrective actions conducted on the property and available information on contamination left in place. The previous definition of de minimis3 allowed environmental professionals to dismiss, or not report this information because the definition of “de minimis” merely stated that such conditions are not the “subject of an enforcement action.”

5. ASTM revised the definition of “migrate/migration” to specifically include vapor migrations. This revision clarifies that releases of contaminants that migrate via vapor in the subsurface or in soils are recognized environmental concerns . Prospective property owners will have the added assurance that releases that migrate onto a subject property via a vapor pathway will be identified as recognized environmental conditions.

6. ASTM revised the standard’s d efinition of “release” to clarify that the definition has the same mean ing as the definition of release in CERCLA . This clarification removes confusion that may have be en caused by different definitions of “release” in the standard and in the CERCLA statute.

7. ASTM revised the standard’s definition of “environment” to clarify that the definition has the same meaning as the definition of environment in CERCLA. This clarification removes confusion that may have be en caused by different definitions of “e nvironment ” in the standard and in the CERCLA statute.

8. ASTM r evised the scope of the “User Responsibilities” section (section 6) to clarify which aspect s of the site assessment investigation may be the responsibility of the user, or prospective property owner, or the user’s chosen representative, and not necessar il y the responsibility of the environmental professional.

This revision aligns with the language at 40 CFR 312.22 (Additional inquiries).

9. ASTM added additional guidance at section 8.2.2, Regulatory Agency File and Records Review, of the standard to provi de a standardized framework for verifying agency information related to information obtained from key database s.4 This additional guidance, and added framework for file and record reviews, clarifies that an environmental professional should make efforts to review and document the validity of information found from searches of agency databases. The result is expected to be an increase in validity of reports and an increase in the le vel of confidence that users, or prospective property owners, can place on site assessment results

. 10. ASTM revised the language in section 12.8 (Conclusions) to allow some flexibility with regard to the wording of the conclusion statement provided by an envi ronmental professional as part of the assessment reports conclusion statement. The revised language allows either for the use of the suggested statements provided in Section 12.8.1

– 12.8.3, or language similar to those statements. This revision will redu ce confusion and increase the level of confidence that a user, or prospective property owner, can place in the report and that it is compliant with both the ASTM standard and the AAI rule.

11. ASTM u pdated the information provided in the standard’s non

- binding appendices

. Appendices are non

- binding and are provided for only for background information

. These revisions have no effect upon the requirements of the standard and no effect upon compliance with the AAI rule. Information provided in the appendices is provided only for background information for the environmental professional and users (prospective property owners). A disclosure statement in the front of the appendices clarifies that EPA was not a party to the development of the appendices and that use rs of the standard should exercise caution when referring to the information in the appendices, in particular the legal appendix (Appendix X 1 ) due to the fact that ongoing litigation and future court decisions could reduce the reliability of the informatio n provided.

ASTM ’ s revisions to Appendix X4 simply provides a suggested outline for a final report of findings, opinions, and conclusions. EPA does not require that AAI reports follow any specific outline. Users of the standard may find the suggested rep ort format useful, but the format provided is not required for compliance with AAI or compliance with the ASTM standard.5