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Significance and Use
4.1 Uses—This guide is intended for use on a voluntary basis primarily by parties who desire to satisfy continuing obligations at commercial real estate or at forestland or rural properties. As such, this guide provides information and suggested procedures that could be useful to persons who wish to establish one of the CERCLA LLPs or similar liability protections offered under state law. This guide may apply where response actions have already occurred, where response actions remain ongoing, or where response actions may be necessary in the future. As noted in , the use of this guide need not be necessarily limited to CERCLA LLPs.
4.2 Clarifications on Use:
4.2.1 Use is Property-Specific—Continuing obligations, and the process to identify and implement continuing obligations, is necessarily property-specific. Therefore, this guide includes information to consider when performing a property-specific, fact-based evaluation to determine appropriate continuing obligations.
4.2.2 Partially Addresses Eligibility for CERCLA LLPs—Users wishing to establish CERCLA LLPs should be aware that the continuing obligations covered by this guide comprise only part of CERCLA's statutory eligibility requirements for LLPs. For example, users seeking to qualify for LLPs must perform AAI before property acquisition. Users seeking the BFPP or CPO LLP must also demonstrate that they are not liable or potentially liable or affiliated with any person who is liable or potentially liable for releases of hazardous substances under CERCLA. 42 U.S.C. §9607(q)(1)(A)(ii); 42 U.S.C. §9601(40)(B)(viii). Further, users seeking the BFPP or ILO LLP must establish that disposal of hazardous substances occurred on the property prior to its acquisition. 42 U.S.C. §9601(40)(B)(i); 42 U.S.C. §9601(35)(A). Users seeking the CPO LLP must establish that they did not cause, contribute or consent to the release of hazardous substances. 42 U.S.C. §9607(q)(A)(i). Finally, users seeking to qualify for the ILO LLP must establish that a third party was the sole cause of the release of hazardous substances and that they held no employment, agency, or contractual relationship with the third party, among other requirements. In addition, users asserting the ILO defense must also establish that they had no knowledge (or reason to know) of any such releases. 42 U.S.C. §§9601(35)(A)(i), 9607(b)(3). The foregoing list is not meant to be exhaustive.
4.2.3 Certain Continuing Obligations Not Detailed in this Guide—As noted in , this guide focuses only on certain continuing obligations, namely those pertaining to land use restrictions, institutional controls, and taking reasonable steps with respect to releases of chemicals of concern.
4.2.4 Use Will Depend on Context—The context for continuing obligations may differ between BFPPs, ILOs and CPOs.
18.104.22.168 BFPPs acquire property after performing AAI, and, therefore may have knowledge of the presence or likely presence of chemicals of concern at the property, as well as the potential need for additional appropriate investigation, if any. This knowledge would guide the BFPP as to what measures it may employ in order to satisfy continuing obligations.
Note 4: The presence of chemicals of concern on the subject property may be the result of historical, area-wide land uses (for example, heavy metals in the soil due to the property being down-wind of smelters or foundries or area-wide ground water contamination) and such area-wide concerns could affect continuing obligations.
22.214.171.124 To establish eligibility for CERCLA LLPs as ILOs or CPOs, CERCLA requires, among other things, that, after performing AAI, there was neither knowledge nor a reason to know that any hazardous substances were disposed on, in, or at the property (ILO) or that the property was or could be contaminated by a release (CPO). 42 U.S.C. §9607(q)(1)(A)(viii)(II) (setting CPO standard); 42 U.S.C. §9601(35)(A)(i) (setting ILO standard). Even though ILOs and CPOs would have no knowledge of hazardous substances when they acquired property, compliance with continuing obligations would be triggered if the persons seeking the ILO or CPO protection thereafter learned of hazardous substances on the property due to releases of hazardous substances.
4.3 Who May Conduct—This guide does not suggest minimum qualifications for persons implementing or evaluating the need for continuing obligations. Continuing obligations may, in some cases, require professional judgment. Property owners should closely evaluate whether, under site-specific circumstances, the evaluation of continuing obligations suggested by this guide would benefit from the experience and judgment of an environmental professional with appropriate education and training relevant to the conditions at the property. Similarly (see ) continuing obligations issues are likely to warrant legal advice.
4.4 Consultation with Government Agencies—A user may also wish to consult (or may be required by state or local laws to consult) appropriate governmental agencies when implementing continuing obligations.
4.5 Residential Properties—This guide does not cover properties with four or less dwelling units. Rather, this guide covers commercial real estate. Dwelling purchasers and owners should be cautioned, however, that depending on the circumstances, dwellings could qualify as facilities under CERCLA § 101(9) and, therefore, CERCLA liability could exist if hazardous substances were released at dwellings. Thus, purchasers of dwellings that conducted all appropriate inquiries prior to acquiring the property may wish to seek liability protection associated with releases of hazardous substances in some circumstances, and if they do, the recommendations in this guide could be useful.
4.6.1 Striking A Balance Between Remediation Liability and Redevelopment Incentives—As more fully discussed in Legal Appendix , Congress sought to strike a balance between the broad liability and remedial goals imposed by CERCLA on responsible parties and the goal of promoting redevelopment of Brownfields sites by removing the disincentives to redevelopment that result from the strict CERCLA liability scheme. Under this balance as discussed in the Legal Appendix ( ), those performing continuing obligations for the purpose of meeting a CERCLA LLP would not ordinarily need to undertake the same response actions as parties responsible for the release. This guide reflects that balance and when suggesting various continuing obligation steps, does so based on the principle that those performing continuing obligations do so within the balanced paradigm desiring property reuse on one hand with adequate environmental and human health protection on the other.
4.6.2 Proportionality to Nature of Release and Exposure Potential—The nature and extent of the continuing obligations should be proportional to the nature, extent, and complexity of the release as well as the potential for exposure under the site-specific property conditions and land uses. Environmentally impaired properties range from extremely large and severely contaminated sites (for example, Superfund sites) to small lightly contaminated sites (for example, small service station leaks). The procedures suggested in this guide, and particularly those in Sections through , should be tailored to the site conditions. Thus, the magnitude and frequency of continuing obligation efforts will be more or less involved depending on the site specifics. Based on the procedures recommended in the guide, the continuing obligations plan (see Section ) designs tailored procedures to perform site-specific continuing obligations.
4.7 Applicability of Other Environmental Laws—Users are reminded that all persons, including those seeking eligibility for the LLPs, have an affirmative obligation to comply with local, state, federal (and tribal if appropriate) rules and statutes governing the management and disposal of hazardous materials and hazardous waste (many of which encompass chemicals of concern), the details of which are beyond the scope of this guide. In addition, some locally enforced national codes (for example, the Uniform Fire Code or International Fire Code) provide standards for the management of hazardous materials and include rules governing the prevention and mitigation of unauthorized releases of chemicals of concern.
1.1 Purpose—The purpose of this guide is to provide information and guidance related to the process of identifying and fulfilling continuing obligations at commercial real estate, and forestland and rural property that is contaminated by hazardous substances within the scope of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) (42 U.S.C. § 9601 et seq.), petroleum products, or other contaminants that require cleanup under federal or state law (collectively hereafter chemicals of concern). Because of the importance of federal law, this guide largely focuses on continuing obligations applicable to the innocent landowner (ILO), the contiguous property owner (CPO), and the bona fide prospective purchaser (BFPP) protections from CERCLA liability (hereinafter, collectively referred to as the “CERCLA Landowner Liability Protections,” or “CERCLA LLPs”) (see Legal to for an outline of CERCLA's liability and defense provisions). However, the continuing obligations arising from CERCLA LLPs are often very similar to the types of continuing obligations that state laws set as conditions for state liability protections. And, therefore, the purpose of this guide seeks to help users who wish to perform continuing obligations because of concerns over CERCLA liability and also extends to help users who wish to perform continuing obligations because of concerns over state law liability. Similarly, where sound risk management rather than a desire for liability protection is the goal, the procedures recommended in this guide can also prove useful
1.1.1 Intended Scope of Standard Guide—As a standard guide, this document provides a compendium of information and options but does not recommend a specific course of action. As a guide, the purpose of this standard is to simply increase the awareness of possible techniques or procedures related to continuing obligations and to offer guidance based on a consensus of viewpoints, but not to establish a standard practice to follow in all cases.
1.1.2 Continuing Obligations Under CERCLA—Subsequent to property acquisition, the Small Business Liability Relief and Brownfields Revitalization Act of 2002 (the “Brownfields Amendments”), which amended CERCLA, requires persons (a broad term meant to cover individuals, companies, government agencies, and other entities) seeking to maintain CERCLA LLPs to establish, by a preponderance of the evidence, fulfillment of certain continuing obligations. The continuing obligations set forth in the Brownfields Amendments include: (1) complying with any land use restrictions established or relied upon in connection with a response action at a property; (2) not impeding the effectiveness or integrity of any institutional controls employed at a property in connection with a response action; (3) taking reasonable steps with respect to releases of hazardous substances, including stopping continuing releases, preventing threatened future releases, and preventing or limiting human, environmental or natural resource exposure to prior releases of hazardous substances; (4) providing full cooperation, assistance and access to persons who are authorized to conduct response actions or natural resource restoration at a property; (5) complying with information requests and administrative subpoenas; (6) providing legally required notices with respect to releases of any hazardous substances at a property; and (7) the CERLCA LLPs for BFPPs and ILOs also require that all disposal of hazardous substances at the property occurred prior to property acquisition. The BUILD Act further amended CERCLA. Under the BUILD Act, certain tenants qualify for CERCLA’s bona fide prospective purchaser protections if the property owner qualifies as a bona fide prospective purchaser, and certain tenants can qualify as bona fide prospective purchasers only if, among other conditions, the tenants fulfill continuing obligations.
1.1.3 Continuing Obligations at Non-CERCLA Properties—In many cases, liability protections under state law require the performance of the same or similar types of continuing obligations. For example, many states have enacted laws that define bona fide prospective purchaser to read similarly to the CERCLA definition, including BFPP requirements to exercise appropriate care, to comply with land use restrictions or to not impede the effectiveness or integrity of institutional controls. Analogous to CERCLA, some of these state laws may provide state law liability protections for persons who meet the BFPP definition. In addition, as described in Guide , several state voluntary cleanup programs provide liability releases within “No Further Action” (NFA) or “Certificates of Completion” documents only if the conditions provided in those documents are complied with. These conditions vary but often include requirements to exercise appropriate care with respect to environmental impacts or to comply with activity and use limitations.AULs are employed at many properties remediated under state or nonCERCLA federal programs where CERCLA liability may not be of concern but, nonetheless, the AUL and reasonable step procedures recommended by this guide may provide useful procedures for assuring AUL compliance. For example, Michigan state law sets “due care” requirements for purchasers of contaminated properties, mandating that they perform various post-purchase duties including, among others, complying with and not impeding the effectiveness and integrity of AULs, and preventing exacerbation and mitigating unacceptable exposure of hazardous substances. Wisconsin also sets legal rules and administrative guidance covering certain continuing obligations for AULs. Additional states similarly impose continuing obligations related to AULs.
1.1.4 Certain Continuing Obligations Not Detailed in this Guide—The procedures recommended in this guide focus on continuing obligations pertaining to land use restrictions, institutional controls, and taking reasonable steps. As noted immediately above, CERCLA and similar state laws or administrative programs require other continuing obligations such as those related to legally required notices, allowing access, and cooperating with government regulators. These “other” continuing obligations are not further discussed in this guide. The lack of detailed treatment of these other continuing obligations, however, does not intend to suggest that they are less important or less relevant to maintaining CERCLA LLPs or similar state liability protections. The user seeking additional information will find background on these other continuing obligations in the Legal Appendix to this guide.
1.1.5 Inclusion of Petroleum Products—Petroleum products are included within the scope of this guide because they are often of concern at commercial real estate. Although petroleum products enjoy a limited exclusion from CERCLA liability, current custom and usage generally includes an evaluation of whether petroleum products may be present on commercial real estate during pre-acquisition environmental site assessments. Further, state laws and programs requiring continuing obligations often cover petroleum products. Thus, this guide likewise includes petroleum products within its scope. The actions discussed in this guide could be useful or prudent if applied at commercial real estate affected by a release of petroleum products.
1.1.6 Discussion of the Related Terms: Activity and Use Limitations, Institutional Controls, Engineering Controls, and Land Use Restrictions—The term Activity and Use Limitation (AUL) is taken from and meant to match the meaning of that term provided in Guide , to include both legal controls (that is, institutional controls) and physical controls (that is, engineering controls) within its scope. Agencies, organizations, and jurisdictions, however, may define or utilize these terms differently. For example, the term “land use controls” is used by the Department of Defense and the term land use restrictions is used but not defined in the Brownfields Amendments. CERCLA, as amended by the Brownfields Amendments, expressly prescribes continuing obligations only for institutional controls (ICs) and land use restrictions (LURs), each of which represents a subset of the term AUL. In addition to land use restrictions and institutional controls, additional types of AULs, particularly engineering controls, may exist at a property. While broadly a type of AUL, engineering controls could also be required by or be associated with ICs or LURs.
1.1.7 Properties Covered—In addition to property with AULs, the procedures suggested by this guide are primarily intended to cover property where chemicals of concern are known to have been (1) released on the property prior to acquisition by the current property owner (2) are present at the property after acquisition by the current property owner, due to the migration from neighboring property, or (3) are discovered after property transfer where the Phase I (or other methods of performing AAI), though properly performed, provided no reason to know of the presence of chemicals of concern. This guide focuses on these release situations because such situations tend to give rise to circumstances in which one or more of the CERCLA LLPs, state liability protections or similar risk management concerns drive the need for continuing obligations at a property.
1.1.8 Presumption of All Appropriate Inquiries and Desire to Qualify for LLPs—This guide is primarily intended for users who seek to qualify for any CERCLA LLPs or similar state-law LLPs. Therefore, this guide presumes that its users have performed or will perform a currently valid Phase I or otherwise satisfy “all appropriate inquiries” prior to acquisition of the property. This presumption affects the organization and structure of this guide because it assumes certain Phase I activities would have been successfully performed and, in turn, relied on and built upon during the stepwise process suggested in this guide. Users who may not need or desire protections under CERCLA or state LLP, but nonetheless seek guidance on performing continuing obligations can nonetheless benefit from this guide and, in particular, the procedures described in Step 3 and Step 4 of this guide’s stepwise process.
1.1.9 Timing—Subject to the other scope considerations described in this section, the procedures in this guide are intended to be applicable when a user knows or has reason to know, after the user’s purchase of the property, that chemicals of concern either (1) have been released at the property or (2) may be released in the future. Therefore, for users who purchase property where Recognized Environmental Conditions (RECs) have been identified, this guide is meant to apply upon property purchase. Users who have gained knowledge or reason to know of property releases of chemicals of concern prior to the publication of this guide (for example, where a user purchased contaminated property years before this guide was published) may still use this guide. Such users may need to reconsider and update the findings and conclusions in any existing Phase I (or alternative all appropriate inquiries efforts) in order to fully utilize this guide. See (addressing presumption of currently valid Phase I/AAI).
1.1.10 Determination of No Continuing Obligations Related to Activity and Use Limitations and Reasonable Steps—Section of this guide recommends a procedure for considering whether continuing obligations covered by this guide are required or applicable to the property. Refer to for a summary of continuing obligations that are not addressed in detail by this guide. As addressed in more detail in Section , a determination that no continuing obligations are required can be made where neither RECs, institutional controls, nor land use restrictions exist, and users otherwise have no knowledge to indicate the presence of chemicals of concern at the property. Even where a Phase I (or all appropriate inquiries) found RECs, further evaluation (see Section ) can justify a conclusion that no chemicals of concern were released and, in turn, this conclusion can justify a determination of no continuing obligations. See , however, discussing the case where future circumstances could arise that would cause users to reevaluate determinations that no continuing obligations are required.
1.1.11 Requirements Other Than Continuing Obligations—CERCLA and similar state laws provide various liability defenses. This guide does not provide guidance on requirements other than continuing obligations that may be necessary to retain eligibility for CERCLA LLPs or other CERCLA or state law defenses. See Legal Appendix and for discussion of CERCLA LLPs and other CERCLA defenses.
1.1.12 Other Federal, State, and Local Environmental Laws—Users are cautioned that federal, state, and local laws may impose environmental assessment, remedial action, or other obligations related to hazardous substances or petroleum products that are beyond the scope of this guide.
1.1.13 Guide Does Not Provide Legal Advice—As noted above, this guide primarily intends to provide information and guidance to users who wish to perform continuing obligations for the purpose of maintaining CERCLA LLPs or similar liability protections under state law. To serve this purpose, this guide focuses on technical, scientific, and procedural issues involved with identifying and performing appropriate continuing obligations under site-specific circumstances. In order to explain the context for the various continuing obligations recommended in this guide, however, the guide sometimes makes reference to the law, such as statutory provisions of CERCLA. These discussions are meant for informational purposes only and are not intended and should not be construed as legal opinions or conclusions of law; nor should any statement in this guide be relied upon as legal advice concerning CERCLA or any legal matter. The CERCLA LLPs involve complicated legal matters with potentially severe consequences. This guide is not intended to and does not replace legal advice, and should not be relied on for any legal question. No implication is intended that a person must use this guide in order to establish or maintain LLPs. Conversely, no implication is intended to assure a person using this guide of success against CERCLA liability when using this guide. The user is encouraged to seek legal advice when seeking to establish and maintain CERCLA liability defenses. In a number of sections throughout the guide, the guide notes instances where legal issues are particularly relevant and often reinforces the guide’s overall recommendation to seek the advice of legal counsel concerning LLPs. Where particular sections do not suggest the need for legal advice, no implication is intended that legal advice is not recommended or warranted.
1.1.14 Documentation—CERCLA requires that a user seeking to retain eligibility for CERCLA LLPs must demonstrate compliance with continuing obligations by a preponderance of evidence. While the legal standards may vary, state LLPs may also require LLP seekers to provide evidence as to continuing obligations. Under CERCLA there is no apparent requirement for written documentation to demonstrate compliance with continuing obligations, but written documentation could be useful and, perhaps even essential, in cases where a user desires to demonstrate the performance of continuing obligations. The guide provides guidance in Section on the preparation of continuing obligation plans and suggests procedures for documenting continuing obligation efforts. Users are encouraged to consult with legal counsel on steps to be taken to document compliance with continuing obligations.
1.2 Objectives—This guide establishes the following objectives: (1) provide information and guidance related to procedures to identify and comply with continuing obligations on commercial real estate or on forest or rural land; and (2) formulate and clarify suggested industry methods and procedures for identifying and satisfying continuing obligations that are practical, efficient and reasonable.
1.3 Organization of this Guide—This guide has nine sections and eight appendices. provides a representation of this guide as a flowchart, and represents decision points for the user as the guidance is applied:
FIG. 1 Flowchart of Guide to Continuing Obligations
Note 1: Continuing obligations may be triggered based in the future as discussed in . Other obligations may exist as discussed in .
Sectionis the Scope.
Sectionlists Referenced Documents.
Section, Terminology, contains definitions of terms used in this guide, definitions of terms unique to this guide and acronyms.
Sectiondiscusses the Significance and Use of this guide.
Section Phase I to help determine whether continuing obligations apply to the property.discusses Step 1, a screening process relying on the
Section AULs that may affect the property in advance of planning for continuing obligations.discusses Step 2, a process for evaluating the environmental conditions and
Section continuing obligations to be performed under site-specific circumstances.discusses Step 3, providing guidance for a process to select
Section continuing obligations.discusses Step 4, providing guidance for a process to select and schedule monitoring requirements for
Section 1) statements of no continuing obligations on a property , (2) a continuing obligations plan, and (3) reporting the periodic monitoring of continuing obligation.offers guidance on documentation for (
The Appendices provide additional information:
Brownfields Amendments, while also providing important discussion on continuing obligations.(the Legal Appendix) describes liability and defenses to liability under CERCLA, as amended by the
continuing obligations.provides a recommended table of contents and report format for a statement of no
continuing obligations.provides a representative form for a statement of no
continuing obligations plan.provides a recommended table of contents and report format for a
continuing obligations monitoring and evaluation report.provides a recommended table of contents and report format for a
continuing obligations field investigation, for a simple site.provides a representative form for
continuing obligations field investigation, for a more complex site.provides a representative form for
develops five scenarios to assist in the application of this guide.
1.4 This guide offers guidance on performing one or more specific tasks and should be supplemented by education, experience and professional judgment. Not all aspects of this guide may be applicable in all circumstances. This guide does not necessarily represent the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a property’s unique aspects. The word “standard” in the title means only that the document has been approved through the ASTM consensus process.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E1527 Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process
E1903 Practice for Environmental Site Assessments: Phase II Environmental Site Assessment Process
E2081 Guide for Risk-Based Corrective Action
E2091 Guide for Use of Activity and Use Limitations, Including Institutional and Engineering Controls
E2205 Guide for Risk-Based Corrective Action for Protection of Ecological Resources
E2247 Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process for Forestland or Rural Property
ICS Number Code 13.020.40 (Pollution, pollution control and conservation)
UNSPSC Code 80121606(Real estate law)
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ASTM E2790-20, Standard Guide for Identifying and Complying With Continuing Obligations, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top