Old Southington Landfill
Deleted NPL SiteSouthington, CT
According to the EPA Superfund Enterprise Management System, Old Southington Landfill in Southington, CT is listed with NPL status Deleted NPL Site. Its Hazard Ranking System (HRS) score is 54.35. The public extract catalogs 100 contaminant records for this site. EPA marks construction of the cleanup remedy as complete. The site has been deleted from the NPL in the EPA record. 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 Connecticut environmental agency.
What is the cleanup status of this Superfund site?
Contaminants
| Contaminant | Media |
|---|---|
| 1,1,1-TRICHLOROETHANE | Air |
| 1,1,1-TRICHLOROETHANE | Groundwater |
| 1,1-DICHLOROETHENE | Groundwater |
| 1,2-DICHLOROETHANE | Groundwater |
| 1,2-DICHLOROETHENE (CIS AND TRANS MIXTURE) | Groundwater |
| 1,2-DICHLOROETHENE (CIS AND TRANS MIXTURE) | Surface Water |
| 1,2-DIHYDROACENAPHTHYLENE | Sediment |
| 1,2-DIHYDROACENAPHTHYLENE | Soil |
| 1,3-DICHLOROBENZENE | Surface Water |
| 9H-FLUORENE | Sediment |
| 9H-FLUORENE | Soil |
| ACENAPHTHYLENE | Sediment |
| ACENAPHTHYLENE | Soil |
| ANTHRACENE | Sediment |
| ANTHRACENE | Soil |
| ANTIMONY | Groundwater |
| AROCLOR 1248 | Groundwater |
| AROCLOR 1254 | Groundwater |
| AROCLOR 1254 | Soil |
| AROCLOR 1260 | Groundwater |
| AROCLOR 1260 | Sediment |
| AROCLOR 1260 | Soil |
| ARSENIC | Groundwater |
| ARSENIC | Sediment |
| ARSENIC | Soil |
| BARIUM | Groundwater |
| BARIUM | Surface Water |
| BENZENE | Air |
| BENZENE | Groundwater |
| BENZO(B)FLUORANTHENE | Sediment |
| BENZO(B)FLUORANTHENE | Soil |
| BENZO(GHI)PERYLENE | Sediment |
| BENZO(GHI)PERYLENE | Soil |
| BENZO(K)FLUORANTHENE | Sediment |
| BENZO(K)FLUORANTHENE | Soil |
| BENZO[A]ANTHRACENE | Sediment |
| BENZO[A]ANTHRACENE | Soil |
| BENZO[A]PYRENE | Sediment |
| BENZO[A]PYRENE | Soil |
| BERYLLIUM | Groundwater |
| BERYLLIUM | Sediment |
| BERYLLIUM | Soil |
| BIS(2-ETHYLHEXYL)PHTHALATE | Groundwater |
| BUTYL BENZYL PHTHALATE | Groundwater |
| CADMIUM | Groundwater |
| CADMIUM | Soil |
| CARBON DISULFIDE | Groundwater |
| CARBON DISULFIDE | Surface Water |
| CARBON TETRACHLORIDE | Groundwater |
| CHLOROETHENE (VINYL CHLORIDE) | Air |
| CHLOROETHENE (VINYL CHLORIDE) | Groundwater |
| CHLOROFORM | Groundwater |
| CHROMIUM(VI) | Groundwater |
| CHROMIUM(VI) | Surface Water |
| CHRYSENE | Sediment |
| CHRYSENE | Soil |
| CIS-1,2-DICHLOROETHENE | Air |
| CIS-1,2-DICHLOROETHENE | Groundwater |
| DIBENZO(A,H)ANTHRACENE | Sediment |
| DIBENZO(A,H)ANTHRACENE | Soil |
| DIBUTYL PHTHALATE | Surface Water |
| DICHLOROMETHANE (METHYLENE CHLORIDE) | Air |
| DICHLOROMETHANE (METHYLENE CHLORIDE) | Groundwater |
| ETHYLBENZENE | Air |
| ETHYLBENZENE | Groundwater |
| FLUORANTHENE | Sediment |
| FLUORANTHENE | Soil |
| GAMMA-CHLORDANE | Groundwater |
| INDENO(1,2,3-CD)PYRENE | Sediment |
| INDENO(1,2,3-CD)PYRENE | Soil |
| LEAD | Groundwater |
| LEAD | Soil |
| MANGANESE | Groundwater |
| MANGANESE | Sediment |
| MANGANESE | Soil |
| MANGANESE | Surface Water |
| MERCURY | Groundwater |
| NAPHTHALENE | Sediment |
| NAPHTHALENE | Soil |
| NICKEL | Groundwater |
| PHENANTHRENE | Sediment |
| PHENANTHRENE | Soil |
| PYRENE | Sediment |
| PYRENE | Soil |
| SILVER | Groundwater |
| STYRENE | Air |
| TETRACHLOROETHENE | Air |
| TETRACHLOROETHENE | Groundwater |
| THALLIUM | Groundwater |
| TOLUENE | Air |
| TOLUENE | Groundwater |
| TRANS-1,2-DICHLOROETHENE | Air |
| TRICHLOROETHENE | Air |
| TRICHLOROETHENE | Groundwater |
| TRICHLOROETHENE | Surface Water |
| VANADIUM | Groundwater |
| XYLENE (MIXED ISOMERS) | Air |
| XYLENE (MIXED ISOMERS) | Groundwater |
| ZINC | Groundwater |
| ZINC | Surface Water |
Location
Other Superfund Sites in Connecticut
| Site Name | Status | HRS Score |
|---|---|---|
| Barkhamsted-New Hartford Landfill | NPL Site | 38.05 |
| Beacon Heights Landfill | NPL Site | 46.77 |
| Cheshire Ground Water Contamination | Deleted NPL Site | 35.57 |
| Durham Meadows | NPL Site | 33.94 |
| Gallup's Quarry | NPL Site | 46.29 |
| Kellogg-Deering Well Field | NPL Site | 39.92 |
| Laurel Park, Inc. | NPL Site | 0.00 |
| Linemaster Switch Corp. | NPL Site | 33.71 |
| New London Submarine Base | NPL Site | 36.53 |
| Nutmeg Valley Road | Deleted NPL Site | 42.69 |
How does this site's HRS score compare in Connecticut?
Of the 17 Connecticut Superfund sites with a scored Hazard Ranking System (HRS) evaluation, Old Southington Landfill ranks #1 by score (54.35).
Either side of it: Scovill Industrial Landfill (50.00), Precision Plating Corp. (49.10)
Frequently Asked Questions
What is the Old Southington Landfill Superfund site? ▼
What does NPL listing mean for Old Southington Landfill? ▼
What is the HRS score for Old Southington Landfill? ▼
What contaminants are at the Old Southington Landfill site? ▼
What is the cleanup status of Old Southington Landfill? ▼
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.