Umatilla Chemical Agent Disposal Facility
E285928
The Umatilla Chemical Agent Disposal Facility was a U.S. Army installation in Oregon responsible for safely destroying stockpiled chemical weapons as part of the national chemical demilitarization effort.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Umatilla Chemical Depot | 4 |
| Umatilla Chemical Agent Disposal Facility canonical | 1 |
| Umatilla Chemical Depot (former) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2574403 — 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: Umatilla Chemical Agent Disposal Facility Context triple: [U.S. Chemical Demilitarization Program, primarySites, Umatilla Chemical Agent Disposal Facility]
-
A.
Tooele Chemical Agent Disposal Facility
The Tooele Chemical Agent Disposal Facility was a major U.S. Army installation in Utah responsible for safely destroying a large portion of the nation’s stockpile of chemical weapons.
-
B.
Johnston Atoll Chemical Agent Disposal System
The Johnston Atoll Chemical Agent Disposal System was a U.S. military facility in the Pacific used to safely destroy and dispose of stockpiled chemical weapons.
-
C.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
D.
Pantex Plant
Pantex Plant is a U.S. nuclear weapons facility in Texas responsible for the assembly, disassembly, and maintenance of the nation’s nuclear warheads.
-
E.
Newport Chemical Depot
Newport Chemical Depot was a former U.S. Army installation in Indiana that stored and later destroyed part of the nation’s chemical weapons stockpile.
- 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: Umatilla Chemical Agent Disposal Facility Target entity description: The Umatilla Chemical Agent Disposal Facility was a U.S. Army installation in Oregon responsible for safely destroying stockpiled chemical weapons as part of the national chemical demilitarization effort.
-
A.
Tooele Chemical Agent Disposal Facility
The Tooele Chemical Agent Disposal Facility was a major U.S. Army installation in Utah responsible for safely destroying a large portion of the nation’s stockpile of chemical weapons.
-
B.
Johnston Atoll Chemical Agent Disposal System
The Johnston Atoll Chemical Agent Disposal System was a U.S. military facility in the Pacific used to safely destroy and dispose of stockpiled chemical weapons.
-
C.
Pueblo Chemical Depot
Pueblo Chemical Depot is a U.S. Army installation in Colorado historically used for the storage and destruction of chemical weapons.
-
D.
Pantex Plant
Pantex Plant is a U.S. nuclear weapons facility in Texas responsible for the assembly, disassembly, and maintenance of the nation’s nuclear warheads.
-
E.
Newport Chemical Depot
Newport Chemical Depot was a former U.S. Army installation in Indiana that stored and later destroyed part of the nation’s chemical weapons stockpile.
- F. None of above. chosen
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
United States Army installation
ⓘ
chemical weapons destruction facility ⓘ |
| affiliation |
U.S. Army Chemical Corps (through CMA)
ⓘ
linked to:
U.S. Army Chemical Materials Activity
|
| chemicalAgentDestroyed |
GB (sarin)
ⓘ
HD (sulfur mustard) ⓘ VX ⓘ
linked to:
VX gas
|
| compliesWith | Chemical Weapons Convention ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| destructionGoal | irreversible destruction of chemical warfare agents ⓘ |
| environmentalRegulation |
subject to Oregon Department of Environmental Quality permits
ⓘ
linked to:
Oregon Department of Environmental Quality
subject to U.S. Environmental Protection Agency oversight ⓘ |
| locatedAt |
Umatilla Chemical Depot
ⓘ
linked to:
Umatilla Chemical Agent Disposal Facility
|
| locatedIn |
Oregon
ⓘ
Umatilla County, Oregon ⓘ |
| locatedNear |
Hermiston, Oregon
ⓘ
Umatilla, Oregon ⓘ |
| operator | United States Army ⓘ |
| ownedBy | United States Department of the Army ⓘ |
| partOf |
U.S. Army Chemical Materials Agency
ⓘ
linked to:
U.S. Army Chemical Materials Activity
U.S. chemical weapons demilitarization program ⓘ
linked to:
U.S. Chemical Demilitarization Program
U.S. stockpile elimination sites ⓘ |
| purpose |
destruction of stockpiled chemical weapons
ⓘ
safe disposal of chemical warfare agents ⓘ |
| safetyFocus | protection of workers and surrounding communities ⓘ |
| safetySystem |
extensive monitoring for chemical agent releases
ⓘ
redundant pollution abatement systems ⓘ |
| status | closed ⓘ |
| stockpileType |
bulk chemical agent containers
ⓘ
unitary chemical munitions ⓘ |
| usedDestructionMethod |
high-temperature incineration
ⓘ
neutralization and biotreatment (for some waste streams) ⓘ |
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: Umatilla Chemical Agent Disposal Facility Description of subject: The Umatilla Chemical Agent Disposal Facility was a U.S. Army installation in Oregon responsible for safely destroying stockpiled chemical weapons as part of the national chemical demilitarization effort.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Umatilla Chemical Agent Disposal Facility
linked to: Umatilla Chemical Agent Disposal Facility
linked to: Umatilla Chemical Agent Disposal Facility
linked to: Umatilla Chemical Agent Disposal Facility
linked to: Umatilla Chemical Agent Disposal Facility