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Comprehensive Environmental Response, Compensation, and Liability Act of 1980
Great Seal of the United States
Long title An act to provide for liability, compensation, cleanup, and emergency response for hazardous substances released into the environment and the cleanup of inactive hazardous waste disposal sites.
Acronyms (colloquial) CERCLA
Nicknames Superfund
Enacted by the 96th United States Congress
Public law P.L. 96-510
Statutes at Large 94 Stat. 2767
Titles amended 42 (Public Health)
U.S.C. sections created 42 U.S.C. § 9601 et seq.
Legislative history
Major amendments
Superfund Amendments and Reauthorization Act of 1986;
Emergency Planning and Community Right-to-Know Act of 1986

Superfund or Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) is a United States federal law designed to clean up sites contaminated with hazardous substances as well as broadly defined "pollutants or contaminants".[1] Superfund also gives authority to federal natural resource agencies, states and Native American tribes to recover natural resource damages caused by releases of hazardous substances, and it created the Agency for Toxic Substances and Disease Registry (ATSDR). CERCLA's broad authority to clean up releases or threatened releases of hazardous substances that may endanger public health or welfare or the (natural) environment was given primarily to the Environmental Protection Agency (EPA) and to states (though most states now have and most often use their own versions of CERCLA). EPA may identify parties responsible for hazardous substances releases to the environment and compel those parties to clean up the sites, or it may clean up itself using the Superfund (a trust fund) and cost recovered from responsible parties by referring such matters to the U.S. Department of Justice. The key difference between the authority to address hazardous substances and pollutants or contaminants is that the cleanup of pollutants or contaminants which are not hazardous substances cannot be compelled by unilateral administrative order.


  • History 1
  • Provisions 2
  • Procedures 3
  • Implementation 4
  • Hazard Ranking System 5
  • Accessing Superfund data 6
  • See also 7
  • References 8
  • Further reading 9
  • External links 10


Workers in hazmat suits check the status of a cleanup site

CERCLA was enacted by Congress in 1980 in response to the threat of hazardous waste sites, typified by the Love Canal disaster in New York, and the Valley of the Drums in Kentucky.[2]

The EPA published the first Hazard Ranking System (HRS) in 1981, and the first National Priorities List (NPL) in 1982.[3] The implementation during early years has been criticized as being ineffective due to the Reagan administration's laissez-faire policies. During his two terms, 16 of the 799 Superfund sites were cleaned up, and $40 million of $700 million in recoverable funds from responsible parties were collected.[4]

The Superfund Amendments and Reauthorization Act of 1986 (SARA), made several important changes and additions to CERCLA, most significantly including Section 121 which added important minimum cleanup requirements, and 122 which required that most agreements with responsible parties to perform remedial action be entered in federal court as a consent decree subject to public comment to address Congressional findings of "sweetheart deals" with industry by the Reagan-era EPA.[5]

In 1994, the Clinton administration proposed a new Superfund reform bill, which was seen as an improvement to existing legislation by some environmentalists and industry lobbyists. However, the effort was unable to gain bipartisan support, and was followed by numerous unsuccessful efforts by the newly elected Republican Congress to significantly weaken the law. This led the Clinton Administration to adopt some industry favored reforms as policy while effectively blocking most major changes.[6] Until the mid-1990s, most of the funding came from a tax on the petroleum and chemical industries, reflecting the polluter pays principle.


CERCLA authorizes two kinds of response actions:

  1. Removal actions. These are typically short-term response actions, where actions may be taken to address releases or threatened releases requiring prompt response. Removal actions are classified as: (1) emergency; (2) time-critical; and (3) non-time critical. Removal responses are generally used to address localized risks such as abandoned drums containing hazardous substances, and contaminated surface soils posing acute risks to human health or the environment.[7]
  2. Remedial actions. These are usually long-term response actions. Remedial actions seek to permanently and significantly reduce the risks associated with releases or threats of releases of hazardous substances, and are generally larger more expensive actions which may include such measures as preventing the migration of pollutants with containment, or preferably removing and/or treating or neutralizing toxic substances. These actions can be conducted with federal funding only at sites listed on the EPA National Priorities List (NPL) in the United States and the territories. Remedial action by responsible parties under consent decrees or unilateral administrative orders with EPA oversight may be performed at both NPL and non-NPL sites, commonly called Superfund Alternative Sites in published EPA guidance and policy documents.[8]

A potentially responsible party (PRP) is a possible polluter who may eventually be held liable under CERCLA for the contamination or misuse of a particular property or resource. Four classes of PRPs may be liable for contamination at a Superfund site:

  1. the current owner or operator of the site;[9]
  2. the owner or operator of a site at the time that disposal of a hazardous substance, pollutant or contaminant occurred;[10]
  3. a person who arranged for the disposal of a hazardous substance, pollutant or contaminant at a site;[11] and
  4. a person who transported a hazardous substance, pollutant or contaminant to a site, who also has selected that site for the disposal of the hazardous substances, pollutants or contaminants.[12]

The CERCLA also required the revision of the National Oil and Hazardous Substances Pollution Contingency Plan 9605(a)(NCP).[13] The NCP provides guidelines and procedures for responses to releases and threatened releases of hazardous substances, pollutants, or contaminants. The NCP also established the NPL. The NPL, which appears as Appendix B to the NCP, primarily serves as an information and management tool for the EPA. The NPL is updated periodically by federal rulemaking.

The identification of a site for the NPL is intended primarily to guide EPA in:

  • determining which sites warrant further investigation to assess the nature and extent of the risks to the human health and environment;
  • identifying what CERCLA-financed remedial actions may be appropriate;
  • notifying the public of sites which EPA believes warrant further investigation; and
  • notifying PRPs that EPA may initiate CERCLA-financed remedial action.

Inclusion of a site on the NPL does not itself require PRPs to initiate action to clean up the site, nor does it assign liability to any person. The NPL serves primarily informational purposes, notifying the government and the public of those sites or releases that appear to warrant remedial actions.

Despite the name, the Superfund trust fund lacks sufficient funds to clean up even a small number of the sites on the NPL. As a result, EPA will typically negotiate consent orders with PRPs to study sites and develop cleanup alternatives, subject to EPA oversight and approval of all such activities. EPA then issues a Proposed Plans for remedial action for a site on which it takes public comment, after which it makes a cleanup decision in a Record of Decision (ROD). RODs are typically implemented under consent decrees by PRPs or under unilateral orders if consent cannot be reached.[14] If a party fails to comply with such an order, it may be fined up to $37,500 for each day that non-compliance continues. A party that spends money to clean up a site may sue other PRPs in a contribution action under the CERCLA.[15] CERCLA liability has generally been judicially established as joint and several among PRPs to the government for cleanup costs (i.e., each PRP is hypothetically responsible for all costs subject to contribution), but CERCLA liability is allocable among PRPs in contribution based on comparative fault. An "orphan share" is the share of costs at a Superfund site that is attributable to a PRP that is either unidentifiable or insolvent.[16] EPA as a matter of long-standing policy tries to treat all PRPs equitably (fairly). Budgetary cuts and constraints can make more equitable treatment of PRPs more difficult.


Map of Superfund sites. Red indicates currently on final National Priority List, yellow is proposed, green is deleted (usually meaning having been cleaned up). This map is as of October 2013.

Upon notification of a potentially hazardous waste site, the EPA conducts a Preliminary Assessment/Site Inspection (PA/SI) which involves records reviews, interviews, visual inspections, and limited field sampling.[17] Information from the PA/SI is used by the EPA to develop a Hazard Ranking System (HRS) score to determine the CERCLA status of the site.[18] Sites that score high enough to be listed typically proceed to a Remedial Investigation/Feasibility Study (RI/FS). The RI includes an extensive sampling program and risk assessment in order to define the nature and extent of the site contamination and risks. The FS is used to develop and evaluate various remediation alternatives. The preferred alternative is presented in a Proposed Plan for public review and comment, followed by a selected alternative in a ROD. The site then enters into a Remedial Design phase and then the Remedial Action phase. Many sites include Long-Term Monitoring. 5-year reviews once the Remedial Action has been completed are required whenever hazardous substances are left onsite above levels safe for unrestricted use.

  • The CERCLA information system (CERCLIS) is a database maintained by the EPA and the states that lists sites where releases may have occurred, need to be addressed, or have been addressed. CERCLIS consists of three inventories: the CERCLIS Removal Inventory, the CERCLIS Remedial Inventory, and the CERCLIS Enforcement Inventory.[16]
  • The Superfund Innovative Technology Evaluation (SITE) program supports development of technologies for assessing and treating waste at Superfund sites. The EPA evaluates the technology and provides an assessment of its potential for future use in Superfund remediation actions. The SITE program consists of four related components: the Demonstration Program, the Emerging Technologies Program, the Monitoring and Measurement Technologies Program, and Technology Transfer activities.[16]
  • A reportable quantity (RQ) is the minimum quantity of a hazardous substance which, if released, is required to be reported.[16][19]
  • A source control action represents the construction or installation and start-up of those actions necessary to prevent the continued release of hazardous substances (primarily from a source on top of or within the ground, or in buildings or other structures) into the environment (40 C.F.R. 300.5).[16]
  • A section 104(e) letter is a request by the government for information about a site. It may include general notice to a potentially responsible party that CERCLA-related action may be undertaken at a site for which the recipient may be responsible.<42 U.S.C. 9604(e)>. This section also authorizes EPA to enter facilities and obtain information relating to PRPs, hazardous substances releases, and liability, and to order access for CERCLA activities.[20] The 104(e) letter information-gathering resembles written interrogatories in civil litigation.[20]
  • A section 106 order is a unilateral administrative order issued by EPA to PRP(s) to perform remedial actions at a Superfund site when EPA determines there may be an imminent and substantial endangerment to the public health or welfare or the environment because of an actual or threatened release of a hazardous substance from a facility, subject to treble damages and daily fines if the order is not obeyed.[16]
  • A remedial response is a long-term action that stops or substantially reduces a release of a hazardous substance that could affect public health or the environment. The term remediation, or cleanup, is sometimes used interchangeably with the terms remedial action, removal action, response action, remedy, or corrective action.[16]
    • A nonbinding allocation of responsibility (NBAR) is a device, established in the Superfund Amendments and Reauthorization Act, that allows the EPA to make a nonbinding estimate of the proportional share that each of the various responsible parties at a Superfund site should pay toward the costs of cleanup.[16][21]
  • Relevant and appropriate requirements are those United States federal or state cleanup requirements that, while not "applicable," address problems sufficiently similar to those encountered at the CERCLA site that their use is appropriate. Requirements may be relevant and appropriate if they would be "applicable" except for jurisdictional restrictions associated with the requirement (40 C.F.R. 300.5).[16]


Polluted Martin's Creek on the Kin-Buc Landfill Superfund site in Edison, New Jersey

As of 29 November 2010, there are 1,280 sites listed on the National Priority List; an additional 347 have been delisted, and 62 new sites have been proposed.[22]

Approximately 70 percent of Superfund cleanup activities historically have been paid for by parties responsible (PRPs) for the cleanup of contamination. The only time cleanup costs are not borne by the responsible party is when that party either cannot be found or is unable to pay for the cleanup. For those sites, the Superfund law originally paid for toxic waste cleanups through a tax on petroleum and chemical industries. The chemical and petroleum fees were intended to provide incentives to use less toxic substances. Over five years, $1.6 billion was collected, and the tax went to a trust fund for cleaning up abandoned or uncontrolled hazardous waste sites. The last full fiscal year (FY) in which the Department of the Treasury collected the tax was 1995. At the end of FY 1996 the invested trust fund balance was $6.0 billion. This fund was exhausted by the end of FY 2003; since that time funding for superfund sites for which the potentially responsible party (PRP) could not be found has been appropriated by Congress out of general revenues.[23]

Hazard Ranking System

The Hazard Ranking System (HRS) is a scoring system used to evaluate potential relative risks to public health and the environment from releases or threatened releases of hazardous wastes at uncontrolled waste sites. Under the Superfund program, EPA and state agencies use the HRS to calculate a site score (ranging from 0 to 100) based on the actual or potential release of hazardous substances from a site through air, surface water or groundwater. A score of 28.5 places the site on the National Priorities List, making the site eligible for long-term remedial action (i.e., cleanup) under the Superfund program.[24]

Accessing Superfund data

The data in the Superfund Program are available to the public.

  • EPA Superfund Information Systems: Report and Product Descriptions[25]
  • EPA Superfund Information Systems: Superfund Product Order Form[26]
  • TOXMAP is a Geographic Information System (GIS) from the Division of Specialized Information Services[27] of the United States National Library of Medicine (NLM) that uses maps of the United States to help users visually explore data from the EPA Toxics Release Inventory (TRI) and Superfund programs. TOXMAP is a resource funded by the US Federal Government. TOXMAP's chemical and environmental health information is taken from NLM's Toxicology Data Network (TOXNET),[28] PubMed, and other authoritative sources.
  • Locus Technologies provides a free Geographic Information System (GIS) to locate Superfund and other contaminated sites in the United States [29] that uses Google Maps to help users visually explore data from the TRI, RCRA, and Superfund programs.

See also


  1. ^ P.L. 96-510, 42 U.S.C. & (33).html § 9601(14) & (33), December 11, 1980.
  2. ^ "Superfund: 20th Anniversary Report:A Series of Firsts". USEPA. Retrieved 18 July 2010. 
  3. ^ "Superfund Timeline". USEPA. Retrieved 18 July 2010. 
  4. ^ "Opinion – Not So Super Superfund". New York Times. 7 Feb 1994. Retrieved 18 July 2010. 
  5. ^ "SARA Overview". USEPA. Retrieved 18 July 2010. 
  6. ^ John H. Cushman Jr. (6 Oct 1994). "Congress forgoese its bid to hasten cleanup of dumps". New York Times. Retrieved 18 July 2010. 
  7. ^ Code of Federal Regulations, 40 C.F.R. 300.415.
  8. ^ 40 C.F.R. 300.430.
  9. ^ CERCLA section 107(a)(1)
  10. ^ CERCLA 107(a)(2)
  11. ^ CERCLA 107(a)(3)
  12. ^ CERCLA 107(a)(4); 42 U.S.C. § 9607.
  13. ^ 40 C.F.R. 300.
  14. ^ CERCLA 104, 106, 12242 U.S.C.  9606, 9622.html § 9604, 9606, 9622.
  15. ^ { CERCLA 42 U.S.C. 9613(f).
  16. ^ a b c d e f g h i  This article incorporates public domain material from the Congressional Research Service document "Superfund Fact Book: Superfund Glossary, Updated March 3, 1997" by Mark Reisch & David Michael Bearden, Environment and Natural Resources Policy Division.
  17. ^ "Preliminary Assessment/Site Inspection". EPA. Retrieved 27 January 2014. 
  18. ^ "Introduction to the Hazard Ranking System". EPA. Retrieved 27 January 2014. 
  19. ^
  20. ^ a b Carole Stern Switzer, Lynn A. Bulan (2002-01-01). CERCLA: Comprehensive Environmental Response, Compensation, and Liability Act (Superfund).  
  21. ^ Allocating Responsibility for Groundwater Remediation Costs
  22. ^ "National Priority List Site Totals by Status and Milestone". EPA. Retrieved 18 December 2010. 
  23. ^ "Superfund Program: Updated Appropriation and Expenditure Data" (PDF). U.S. Government Accountability Office. Retrieved 27 January 2014. 
  24. ^  This article incorporates public domain material from the Congressional Research Service document "Superfund Fact Book: Superfund Glossary, Updated March 3, 1997" by Mark Reisch & David Michael Bearden, Environment and Natural Resources Policy Division.
  25. ^ "Report and Product Descriptions".  
  26. ^ "Superfund Product Order Form". United States Environmental Protection Agency. Retrieved 11 August 2010. 
  27. ^ "SIS Specialized Information System".  
  28. ^ "Toxnet". United States National Library of Medicine. Retrieved 11 August 2010. 
  29. ^ "Locate Environmental Hotspots Now".  

Further reading

  • EPA. "CERCLA/Superfund Orientation Manual." Document No. EPA/542/R-92/005. October 1992.
  • U.S. Environmental Protection Agency (EPA), Washington, DC (2010-05-10). "Introduction to the Hazard Ranking System."

External links

  • Superfund – EPA
  • Agency for Toxic Substances and Disease Registry
  • National Priorities List of Hazardous Substances
  • Superfund sites by state – EPA
  • "High Court Limits Liability in Superfund Cases." – New York Times, 2009-05-05
  • "Without Superfund Tax, Stimulus Money Helps Pay for Cleanups." – New York Times, 2009-04-26
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