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Superfund / NPL site · EPA Superfund SEMS through latest publishNPL FinalFEDERAL FACILITY

Louisiana Army Ammunition Plant

This site is currently on the EPA Superfund National Priorities List and remains under federal cleanup oversight. Most-cited contaminant of concern: 1,3,5,7-Tetranitro-1,3,5,7-Tetrazocane (Hmx).

Hwy 80 E/Po Box 30059, Doyline, Louisiana · ZIP 71130 · EPA ID LA0213820533

See Webster ContaminantsEquity contextHow we read Superfund data
CLEANUP TIMELINE

Listing-date and cleanup-phase enrichment from EPA's per-site SEMS profile is queued for a follow-up ingest pass. Until then, this section will populate from EPA's published timeline data.

Anomaly engine

Notable Signals

No notable signals at this Superfund site for the current ingest. Cleanup-phase and SEMS-action flags are deferred to a follow-up engineering pass.

Contaminants of concern · per EPA SEMS

What's In This Site

Each row pairs a contaminant with the medium it was found in (the exposure pathway). Hover any named contaminant for an agency-cited health-risk summary. Cited count = number of SEMS decision records (RODs and related) that name the pair.

ContaminantPathwayCited
1,3,5,7-Tetranitro-1,3,5,7-Tetrazocane (Hmx)Groundwater2
2-Amino-4,6-DinitrotolueneGroundwater2
4-Amino-2,6-DinitrotolueneGroundwater2
1,1-DichloroetheneHealth riskVinylidene chloride; IARC Group 3 (inadequate evidence in humans) but liver toxic in animal studies; common TCE/PCE biodegradation product. (IARC, EPA)Soil1
1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA)Groundwater1
1,2-DihydroacenaphthyleneSoil1
1,3,5,7-Tetranitro-1,3,5,7-Tetrazocane (Hmx)Soil1
1,3,5-TrinitrobenzeneSoil1
1,3-DinitrobenzeneGroundwater1
1,3-DinitrobenzeneSoil1
2,4,6-TrinitrotolueneGroundwater1
2,4,6-TrinitrotolueneSoil1
2,4-DimethylphenolGroundwater1
2,4-DinitrotolueneGroundwater1
2,4-DinitrotolueneSoil1
2,6-DinitrotolueneGroundwater1
2,6-DinitrotolueneSoil1
9H-FluoreneSoil1
AluminumHealth riskInhaled aluminum fumes can cause lung scarring (aluminosis); high cumulative exposure has been linked to neurological effects. (NIOSH)Soil1
AnthraceneSoil1
ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR)Groundwater1
ArsenicHealth riskIARC Group 1 carcinogen via inhalation and ingestion. EPA MCL 10 µg/L; chronic exposure causes skin, lung, bladder cancer and cardiovascular disease. (IARC, EPA, ATSDR)Soil1
BenzeneHealth riskIARC Group 1 carcinogen. Long-term inhalation causes leukemia and bone-marrow disorders. (IARC, EPA)Groundwater1
Benzo(B)FluorantheneSoil1
Benzo(Ghi)PeryleneSoil1
Benzo(K)FluorantheneSoil1
Benzo[A]AnthraceneHealth riskPAH; IARC Group 2B possible carcinogen; common combustion byproduct and creosote constituent. (IARC)Soil1
Benzo[A]PyreneHealth riskPAH; IARC Group 1 carcinogen; the prototypical PAH used to benchmark PAH-mixture cancer risk. EPA MCL 0.2 µg/L. (IARC, EPA)Soil1
Bis(2-Ethylhexyl)PhthalateSoil1
Chromium (Iii)Health riskHexavalent chromium (Cr-VI) is an IARC Group 1 carcinogen via inhalation, causing lung cancer; trivalent chromium is far less toxic. (IARC, EPA)Soil1

Showing the top 30 pairs by SEMS citation count. 17 additional (contaminant, pathway) pairs are recorded for this site.

Drinking-water linkage · SDWIS

Groundwater Systems Serving Communities Within 3 Miles

The 5 systems below draw on groundwater (or mixed sources) and serve communities whose centroid sits within 3 miles of this site. Distance is to the served-city centroid — SDWIS does not expose individual wellhead locations, so this is a proximity screen, not a wellhead-impact assessment.

Water systemServesDistancePopulation servedSourceStatus
Bellevue Water System PrivateDoyline1.5 mi1,347GROUNDWATERUNRESOLVED
Doyline Waterworks District 1 MunicipalDoyline1.5 mi969GROUNDWATERUNRESOLVED
Horse Shoe Road Water System PrivateDoyline1.5 mi270GROUNDWATERUNRESOLVED
Jenkins Community Water System PrivateDoyline1.5 mi1,026GROUNDWATER1 HEALTH-BASED · 5YR
Palmetto Water Works Inc PrivateDoyline1.5 mi285GROUNDWATERUNRESOLVED

Methodology: served-city centroid (TIGER 2020) is used as the PWS coordinate. Source-water classification from SDWIS primary_source_code; only groundwater and mixed-source systems are queried. Click any system above for its full SDWIS profile.

Equity context · ACS 2018-2022 block-group demographics

Who Lives Near This Site

Webster County, Louisiana (no Census block groups within 1 mile and no host city — falling back to containing county): a population of 36,761. Why we surface this →

POPULATION SHARE
27.6%

Low-income

POPULATION SHARE
38.2%

People of color

POPULATION SHARE
5.9%

Under age 5

POPULATION SHARE
20.2%

Over age 64

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror). NPL site proximity contributes to the national EJ pattern; indicator-level percentile and disparity scores are surfaced on the county page and the state page.

Source. EPA Superfund Enterprise Management System (SEMS) · retrieved 2026-05-07. SEMS is a federal public-domain dataset under 17 USC §105.

What this is not. We report EPA's published Superfund record — site listing, status, and contaminants of concern as named in EPA's decision documents. We do not perform site visits, independent air or water sampling, or current-state health-risk assessment. NPL listing reflects EPA's Hazard Ranking Score at a point in time; it does not by itself describe present-day exposure.