Clean Air Interstate Rule
E167629
The Clean Air Interstate Rule was a U.S. Environmental Protection Agency regulation aimed at reducing interstate air pollution from power plants, particularly sulfur dioxide and nitrogen oxides that contribute to fine particulate matter and ozone.
All labels observed (5)
How this entity was disambiguated
This entity first appeared as the object of triple T1460785 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Clean Air Interstate Rule Context triple: [Acid Rain Program, relatedTo, Clean Air Interstate Rule]
-
A.
Acid Rain Program
The Acid Rain Program is a U.S. federal regulatory initiative that uses a cap-and-trade system to reduce sulfur dioxide and nitrogen oxide emissions from power plants in order to combat acid rain and improve air quality.
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B.
Clean Air Act
The Clean Air Act is a landmark U.S. federal law that regulates air emissions from stationary and mobile sources to protect public health and the environment from air pollution.
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C.
National Ambient Air Quality Standards
The National Ambient Air Quality Standards are U.S. federal air pollution limits that set maximum allowable concentrations of key pollutants in outdoor air to protect public health and the environment.
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D.
Prevention of Significant Deterioration program
The Prevention of Significant Deterioration program is a U.S. air quality permitting system that limits emissions from new or modified major pollution sources in areas that already meet national air quality standards.
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E.
Air Quality Agreement between Canada and the United States
The Air Quality Agreement between Canada and the United States is a bilateral treaty aimed at reducing transboundary air pollution and protecting environmental and human health in both countries.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Clean Air Interstate Rule Target entity description: The Clean Air Interstate Rule was a U.S. Environmental Protection Agency regulation aimed at reducing interstate air pollution from power plants, particularly sulfur dioxide and nitrogen oxides that contribute to fine particulate matter and ozone.
-
A.
Acid Rain Program
The Acid Rain Program is a U.S. federal regulatory initiative that uses a cap-and-trade system to reduce sulfur dioxide and nitrogen oxide emissions from power plants in order to combat acid rain and improve air quality.
-
B.
Clean Air Act
The Clean Air Act is a landmark U.S. federal law that regulates air emissions from stationary and mobile sources to protect public health and the environment from air pollution.
-
C.
National Ambient Air Quality Standards
The National Ambient Air Quality Standards are U.S. federal air pollution limits that set maximum allowable concentrations of key pollutants in outdoor air to protect public health and the environment.
-
D.
Prevention of Significant Deterioration program
The Prevention of Significant Deterioration program is a U.S. air quality permitting system that limits emissions from new or modified major pollution sources in areas that already meet national air quality standards.
-
E.
Air Quality Agreement between Canada and the United States
The Air Quality Agreement between Canada and the United States is a bilateral treaty aimed at reducing transboundary air pollution and protecting environmental and human health in both countries.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
United States federal regulation
ⓘ
air pollution control rule ⓘ |
| administeredBy |
EPA Office of Air and Radiation
ⓘ
linked to:
Office of Air and Radiation
|
| announcedBy | United States Environmental Protection Agency ⓘ |
| announcedUnderAdministration |
George W. Bush administration
ⓘ
linked to:
Bush administration
|
| appliesTo |
electric generating units
ⓘ
fossil fuel–fired power plants ⓘ |
| complianceApproach |
market-based compliance flexibility
ⓘ
phased emission reductions ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| court | United States Court of Appeals for the District of Columbia Circuit ⓘ |
| courtReview | North Carolina v. EPA ⓘ |
| environmentalEffectAddressed |
fine particulate matter formation
ⓘ
ground-level ozone formation ⓘ |
| finalRuleYear | 2005 ⓘ |
| focus | interstate transport of SO2 and NOx from power plants ⓘ |
| geographicScope |
Eastern United States
ⓘ
downwind states affected by interstate air pollution ⓘ |
| healthRationale |
reduce premature mortality from fine particulate matter exposure
ⓘ
reduce respiratory and cardiovascular impacts from ozone and particulate matter ⓘ |
| legalAuthority |
Section 110 of the Clean Air Act
ⓘ
Section 126 of the Clean Air Act ⓘ Section 301 of the Clean Air Act ⓘ |
| legalBasis | Clean Air Act ⓘ |
| mechanism |
emissions caps on nitrogen oxides
ⓘ
emissions caps on sulfur dioxide ⓘ interstate trading of emission allowances ⓘ |
| objective |
help states attain and maintain National Ambient Air Quality Standards for fine particulate matter
ⓘ
help states attain and maintain National Ambient Air Quality Standards for ozone ⓘ reduce interstate transport of air pollution ⓘ |
| policyInstrument | cap-and-trade program ⓘ |
| policyType | multi-state air quality regulation ⓘ |
| pollutionTransportConcept |
good neighbor provision of the Clean Air Act
ⓘ
linked to:
Part D of Title I of the Clean Air Act
|
| publicationInFederalRegister | May 12, 2005 ⓘ |
| regulator | United States Environmental Protection Agency ⓘ |
| relatedTo |
Acid Rain Program
ⓘ
NOx SIP Call ⓘ |
| replacedBy |
Cross-State Air Pollution Rule
ⓘ
linked to:
Clean Air Interstate Rule
Transport Rule ⓘ |
| replacedByAbbreviation | CSAPR ⓘ |
| sectorCovered | power generation sector ⓘ |
| shortName | CAIR ⓘ |
| status |
partially vacated by court
ⓘ
superseded ⓘ |
| targetPollutant |
nitrogen oxides
ⓘ
sulfur dioxide ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Clean Air Interstate Rule Description of subject: The Clean Air Interstate Rule was a U.S. Environmental Protection Agency regulation aimed at reducing interstate air pollution from power plants, particularly sulfur dioxide and nitrogen oxides that contribute to fine particulate matter and ozone.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Clean Air Interstate Rule
linked to: Clean Air Interstate Rule
linked to: Clean Air Interstate Rule
North Carolina v. EPA
→
holding
→
The D.C. Circuit vacated the Clean Air Interstate Rule in part and remanded it to the EPA
ⓘ
linked to: Clean Air Interstate Rule
linked to: Clean Air Interstate Rule