Casmalia Resources

NPL Site
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Casmalia, CA

According to the EPA Superfund Enterprise Management System, Casmalia Resources in Casmalia, CA is listed with NPL status NPL Site. Its Hazard Ranking System (HRS) score is 30.00. The public extract catalogs 114 contaminant records for this site. NPL listing is a cleanup-authority designation, not a measured health-risk score.

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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 California environmental agency.

What is the cleanup status of this Superfund site?

NPL Status
NPL Site
Federal Facility
No
Construction Complete
No
HRS Score
30.00
Deleted from NPL
No

Contaminants

Contaminant Media
(Z)-1,3-DICHLORO-1-PROPENE Groundwater
1,1,1-TRICHLOROETHANE Groundwater
1,1,2,2-TETRACHLOROETHANE Groundwater
1,1,2-TRICHLORO-1,2,2-TRIFLUOROETHANE Groundwater
1,1,2-TRICHLOROETHANE Groundwater
1,1-DICHLOROETHANE Groundwater
1,1-DICHLOROETHENE Groundwater
1,2,3,4,6,7,8,9-OCTACHLORODIBENZO[b,e][1,4]DIOXIN (OCDD) Groundwater
1,2,3,4,6,7,8,9-OCTACHLORODIBENZOFURAN Groundwater
1,2,3,4,6,7,8-HEPTACHLORODIBENZO[b,e][1,4]DIOXIN (HpCDD) Groundwater
1,2,3,4,6,7,8-Heptachlorodibenzofuran Groundwater
1,2,3,4,7,8,9-Heptachlorodibenzofuran Groundwater
1,2,3,4,7,8-HEXACHLORODIBENZO[b,e][1,4]DIOXIN (HxCDD) Groundwater
1,2,3,4,7,8-HEXACHLORODIBENZOFURAN (HxCDF) Groundwater
1,2,3,6,7,8-HEXACHLORODIBENZO[b,e][1,4]DIOXIN (HxCDD) Groundwater
1,2,3,6,7,8-HEXACHLORODIBENZOFURAN (HxCDF) Groundwater
1,2,3,7,8,9-HEXACHLORODIBENZO-p-DIOXIN (HxCDD) Groundwater
1,2,3,7,8,9-HEXACHLORODIBENZOFURAN (HxCDF) Groundwater
1,2,3,7,8-PENTACHLORODIBENZO[b,e][1,4]DIOXIN (PeCDD) Groundwater
1,2,3,7,8-PENTACHLORODIBENZOFURAN Groundwater
1,2-DICHLOROETHANE Groundwater
1,2-DICHLOROPROPANE Groundwater
1,2-DIMETHYLBENZENE (O-XYLENE) Groundwater
1,3-BUTADIENE Soil Gas
1,4-DIOXANE Groundwater
2,3,4,6,7,8-Hexachlorodibenzofuran Groundwater
2,3,4,7,8-PENTACHLORODIBENZOFURAN (PeCDF) Groundwater
2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN (TCDD) Groundwater
2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN (TCDD) TOXICITY EQUIVALENTS (TEq) Soil
2-METHOXY-2-METHYLPROPANE (MTBE) Groundwater
9H-FLUORENE Groundwater
ACENAPHTHYLENE Groundwater
ALUMINUM Groundwater
ANTIMONY Groundwater
ARSENIC Groundwater
ARSENIC Liquid Waste
ARSENIC Sediment
BARIUM Groundwater
BARIUM Sediment
BENZENE Groundwater
BENZO(B)FLUORANTHENE Groundwater
BENZO(GHI)PERYLENE Groundwater
BENZO(K)FLUORANTHENE Groundwater
BENZO[A]ANTHRACENE Groundwater
BENZO[A]PYRENE Groundwater
BERYLLIUM Groundwater
BIS(2-ETHYLHEXYL)PHTHALATE Groundwater
BIS(2-ETHYLHEXYL)PHTHALATE Soil
BROMODICHLOROMETHANE Groundwater
BROMOFORM Groundwater
CADMIUM Groundwater
CADMIUM Sediment
CADMIUM Soil
CARBON TETRACHLORIDE Groundwater
CHLORINATED DIOXINS AND FURANS Sediment
CHLORINATED DIOXINS AND FURANS Soil
CHLOROBENZENE Groundwater
CHLOROETHENE (VINYL CHLORIDE) Groundwater
CHLOROFORM Groundwater
CHROMIUM Groundwater
CHROMIUM Sediment
CHROMIUM Soil
CHRYSENE Groundwater
CIS-1,2-DICHLOROETHENE Groundwater
COPPER Groundwater
COPPER Soil
DIBENZO(A,H)ANTHRACENE Groundwater
DICHLOROMETHANE (METHYLENE CHLORIDE) Groundwater
ENDRIN Groundwater
ENDRIN Soil
ETHYLBENZENE Groundwater
FLUORANTHENE Groundwater
HEPTACHLOR Groundwater
HEPTACHLOR EPOXIDE Groundwater
HEXACHLOROBENZENE Groundwater
HEXACHLOROBENZENE Soil
LEAD Groundwater
LEAD Soil
MANGANESE Groundwater
MANGANESE Sediment
MECOPROP Sediment
MECOPROP Soil
MERCURY Sediment
MIREX Soil
MOLYBDENUM Sediment
MOLYBDENUM Soil
NAPHTHALENE Groundwater
NICKEL Groundwater
P,P'-DDE Soil
P,P'-DDT Soil
PENTACHLOROPHENOL Groundwater
POLYCHLORINATED BIPHENYLS (PCBs) Groundwater
POLYCHLORINATED BIPHENYLS (PCBs) Sediment
PYRENE Groundwater
SELENIUM Groundwater
SELENIUM Sediment
SELENIUM Soil
STYRENE Groundwater
TETRACHLOROETHENE Groundwater
TETRACHLOROETHENE Soil
TETRACHLOROETHENE Soil Gas
THALLIUM Groundwater
TOLUENE Groundwater
TRANS-1,2-DICHLOROETHENE Groundwater
TRICHLOROETHENE Groundwater
TRICHLOROETHENE Soil
TRICHLOROETHENE Soil Gas
TRICHLOROFLUOROMETHANE Groundwater
VANADIUM Sediment
VANADIUM Soil
XYLENE (MIXED ISOMERS) Groundwater
ZINC Groundwater
ZINC Sediment
ZINC Soil

Location

City
Casmalia
Coordinates
34.8631, -120.5443

Other Superfund Sites in California

Site Name Status HRS Score
Advanced Micro Devices, Inc. NPL Site 37.93
Advanced Micro Devices, Inc. (Building 915) NPL Site 31.94
Aerojet General Corp. NPL Site 54.63
Afterthought Mine NPL Site 50.00
Alameda Naval Air Station NPL Site 50.00
Alark Hard Chrome NPL Site 50.50
AMCO Chemical NPL Site 50.00
Applied Materials NPL Site 31.94
Argonaut Mine NPL Site 58.31
Atlas Asbestos Mine NPL Site 45.55

How does this site's HRS score compare in California?

Of the 116 California Superfund sites with a scored Hazard Ranking System (HRS) evaluation, Casmalia Resources ranks #103 by score (30.00).

Either side of it: Omega Chemical Corporation (30.94), Celtor Chemical Works (30.31), Hewlett-Packard (620-640 Page Mill Road) (29.76), Intel Corp. (Mountain View Plant) (29.76)

Frequently Asked Questions

What is the Casmalia Resources Superfund site?
Casmalia Resources, in Casmalia, CA, sits toward the lower end of California's Hazard Ranking System scores (HRS 30.00, rank #103 of 116 scored sites) among the state's Superfund sites. A lower HRS rank within the state does not mean no cleanup obligation -- Superfund sites are contaminated locations identified by the EPA for long-term cleanup under CERCLA regardless of relative score.
What does NPL listing mean for Casmalia Resources?
According to the EPA, National Priorities List (NPL) listing designates a site for long-term federal Superfund cleanup authority. It is a programmatic status in the Superfund Enterprise Management System, not a quantitative health-risk score for nearby residents. Construction-complete status is not marked in the EPA record for this site. Site-specific conditions and community guidance are published by EPA Regional Superfund offices and the relevant state environmental agency.
What is the HRS score for Casmalia Resources?
Casmalia Resources's Hazard Ranking System (HRS) score is 30.00, placing it #103 of 116 California Superfund sites with a scored HRS evaluation -- among the lower-scored sites in the state. Sites with a score of 28.50 or greater qualify for the NPL; the model weighs contaminant toxicity, waste quantity, release likelihood, and affected population, and is not a community health diagnosis.
What contaminants are at the Casmalia Resources site?
The EPA public Superfund extract catalogs 114 contaminants at Casmalia Resources, documented through the remedial investigation process. Counts reflect listed records in that extract, not a complete inventory of every substance ever present.
What is the cleanup status of Casmalia Resources?
Casmalia Resources is currently NPL Site on the National Priorities List. The EPA Superfund cleanup process includes phases from preliminary assessment through post-construction completion.

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.

Related

Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro