Marshall Landfill
NPL SiteBoulder County, CO
According to the EPA Superfund Enterprise Management System, Marshall Landfill in Boulder County, CO is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 0.00. The public extract catalogs 16 contaminant records for this site. EPA marks construction of the cleanup remedy as complete. 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 Colorado environmental agency.
What is the cleanup status of this Superfund site?
Contaminants
| Contaminant | Media |
|---|---|
| 1,1-DICHLOROETHENE | Groundwater |
| 1,1-DICHLOROETHENE | Surface Water |
| BENZENE | Groundwater |
| BENZENE | Surface Water |
| CADMIUM | Groundwater |
| CADMIUM | Surface Water |
| CHROMIUM | Groundwater |
| CHROMIUM | Surface Water |
| IRON | Groundwater |
| IRON | Surface Water |
| LEAD | Groundwater |
| LEAD | Surface Water |
| MERCURY | Groundwater |
| MERCURY | Surface Water |
| PHENOL | Groundwater |
| PHENOL | Surface Water |
Location
Other Superfund Sites in Colorado
| Site Name | Status | HRS Score |
|---|---|---|
| Air Force Plant PJKS | NPL Site | 42.93 |
| Bonita Peak Mining District | NPL Site | 50.00 |
| Broderick Wood Products | NPL Site | 35.13 |
| California Gulch | NPL Site | 55.84 |
| Captain Jack Mill | NPL Site | 50.56 |
| Central City, Clear Creek | NPL Site | 51.39 |
| Chemical Sales Co. | NPL Site | 37.93 |
| Colorado Smelter | NPL Site | 50.00 |
| Denver Radium Site | NPL Site | 44.11 |
| Eagle Mine | NPL Site | 47.19 |
How does this site's HRS score compare in Colorado?
Of the 24 Colorado Superfund sites with a scored Hazard Ranking System (HRS) evaluation, Marshall Landfill ranks #24 by score (0.00).
Either side of it: Lincoln Park (31.31), Smuggler Mountain (31.31)
Frequently Asked Questions
What is the Marshall Landfill Superfund site? ▼
What does NPL listing mean for Marshall Landfill? ▼
What is the HRS score for Marshall Landfill? ▼
What contaminants are at the Marshall Landfill site? ▼
What is the cleanup status of Marshall 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.