Andersen Air Force Base
NPL SiteYigo, GU
According to the EPA Superfund Enterprise Management System, Andersen Air Force Base in Yigo, GU is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 50.00. The public extract catalogs 52 contaminant records for this site. NPL listing is a cleanup-authority designation, not a measured health-risk score.
Superfund National Priorities List inclusion (status and HRS score shown above) is the EPA's formal designation that a contaminated site qualifies for long-term federal cleanup authority under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). A federal-facility classification means the site is owned or operated by a federal agency, which routes cleanup responsibility differently than a privately owned site.
"Construction Complete" (status shown above) is an EPA milestone marking that the physical remedy work is finished, not that the site has exited EPA oversight; long-term monitoring can continue afterward. Deletion from the NPL is a separate, later step the EPA takes only once it determines every planned response action is finished.
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. HRS scores of 28.50 or above qualify a site for the NPL under the EPA screening model (toxicity, pathways, waste quantity, and affected population factors). For current site conditions and official community notices, see the EPA Regional Superfund profile and the Guam environmental agency.
What is the cleanup status of this Superfund site?
Contaminants
| Contaminant | Media |
|---|---|
| 2,4-DINITROTOLUENE | Soil |
| ALPHA-CHLORDANE | Soil |
| ALUMINUM | Soil |
| ANTIMONY | Soil |
| AROCLOR 1248 | Soil |
| AROCLOR 1254 | Soil |
| AROCLOR 1260 | Soil |
| ARSENIC | Soil |
| ASBESTOS | Buildings/Structures |
| ASBESTOS | Soil |
| ASBESTOS | Solid Waste |
| BARIUM | Soil |
| BENZO(B)FLUORANTHENE | Soil |
| BENZO(K)FLUORANTHENE | Soil |
| BENZO[A]ANTHRACENE | Soil |
| BENZO[A]PYRENE | Soil |
| BENZOIC ACID | Soil |
| BERYLLIUM | Soil |
| BIS(CHLOROMETHYL) ETHER | Soil |
| CADMIUM | Soil |
| CHLORINATED DIOXINS AND FURANS | Soil |
| CHROMIUM | Soil |
| CHRYSENE | Soil |
| COBALT | Soil |
| COPPER | Soil |
| DIBENZ[A,H]ACRIDINE | Soil |
| DIBENZO(A,H)ANTHRACENE | Soil |
| DICHLOROMETHANE (METHYLENE CHLORIDE) | Soil |
| DIELDRIN | Soil |
| DIOXINS (CHLORINATED DIBENZODIOXINS) | Soil |
| GAMMA-CHLORDANE | Soil |
| INDENO(1,2,3-CD)PYRENE | Soil |
| IRON | Soil |
| LEAD | Soil |
| MANGANESE | Soil |
| MERCURY | Soil |
| NICKEL | Soil |
| P,P'-DDD | Soil |
| P,P'-DDE | Soil |
| P,P'-DDT | Soil |
| PHENYLMETHANOL | Soil |
| POLYCHLORINATED BIPHENYLS (PCBs) | Fish Tissue |
| POLYCHLORINATED BIPHENYLS (PCBs) | Soil |
| SELENIUM | Soil |
| SILVER | Soil |
| TETRACHLORODIBENZO[b,e][1,4]DIOXIN (TCDD) (Mixed isomers) | Soil |
| TETRACHLOROETHENE | Groundwater |
| THALLIUM | Soil |
| TRICHLOROETHENE | Groundwater |
| UNEXPLODED ORDNANCE (UXO) | Debris |
| VANADIUM | Soil |
| ZINC | Soil |
Location
Other Superfund Sites in Guam
| Site Name | Status | HRS Score |
|---|---|---|
| Ordot Landfill | NPL Site | 0.00 |
How does this site's HRS score compare in Guam?
Of the 2 Guam Superfund sites with a scored Hazard Ranking System (HRS) evaluation, Andersen Air Force Base ranks #1 by score (50.00).
Either side of it: Ordot Landfill (0.00)
Frequently Asked Questions
What is the Andersen Air Force Base Superfund site? ▼
What does NPL listing mean for Andersen Air Force Base? ▼
What is the HRS score for Andersen Air Force Base? ▼
What contaminants are at the Andersen Air Force Base site? ▼
What is the cleanup status of Andersen Air Force Base? ▼
NPL listing is a cleanup-authority designation in the EPA record, not a quantitative health-risk score. See Superfund Sites Explained for how the National Priorities List, Hazard Ranking System, and cleanup phases work.
Read our methodology - how this data is sourced, computed, and verified.