Madisonville Creosote Works

Location

Contaminants of concern

• BENZO(B)FLUORANTHENE
• BENZO[A]PYRENE
• DIBENZO(A,H)ANTHRACENE

Contaminated media

• Soil

Cleanup timeline

1. Initial Assessment Completed — 01/01/1987
2. Proposed to the National Priorities List — 06/17/1996
3. Finalized on the National Priorities List — 12/23/1996
4. Remedial Investigation Started — 09/26/1997
5. Final Remedy Selected — 08/25/1998
6. Final Remedial Action Started — 09/29/1998
7. Construction Completed — 06/16/2000
8. Deleted from National Priorities List — Not Yet Achieved
9. Most Recent Five-Year Review — 05/28/2024
10. Achieved Sitewide Ready for Anticipated Reuse — 09/20/2007

EPA references

• EPA facility record →
• EPA Superfund profile →

Other Superfund sites in St Tammany County

• Bayou Bonfouca — Slidell

EPA-regulated facilities nearby

• Magnolia Water Utility Operating Co., Llc- Guste Island Stf — Madisonville · 1.1 mi · $52.0k penalties
• Les Bois Stp — Madisonville · 1.6 mi · $1.0k penalties
• Diversified Foods & Seasonings Llc — Madisonville · 2.6 mi · $50.1k penalties
• Greenbrier Pond Wastewater Treatment Plant — Covington · 3.6 mi · $5.0k penalties
• Tchefuncta Club Estates, Inc.- Tce Aerated Lagoon — Covington · 3.7 mi · $1.0k penalties
• Magnolia Water Utility Operating Co., Llc- The Villas Of Bedico Creek — Ponchatoula · 3.9 mi · $40.0k penalties
• Arrowwood Regional Wastewater Treatment Facility — Covington · 4.2 mi · $10.5k penalties
• Jsb Hwy 21 Lots, Llc - Azalea Gardens Temp Concrete Plant — Covington · 4.8 mi · $7.2k penalties
• Oak Villa Mh Community Llc — Covington · 5.5 mi · $21.0k penalties
• Silver Hill Subdivision — Ponchatoula · 5.9 mi · $2.1k penalties

Understanding this Superfund site

Madisonville Creosote Works is a federal Superfund site in Louisiana. The Superfund program, created by Congress in 1980, addresses sites where hazardous substances have been released or threaten release into the environment. EPA scores potential sites using the Hazard Ranking System; those that score high enough are placed on the National Priorities List.

Current status: Ready for anticipated reuse. EPA considers this site ready for anticipated reuse, meaning cleanup has progressed enough for certain land uses. This does not necessarily mean all contamination has been removed — institutional controls like deed restrictions may limit how the land can be used.

Contaminants of concern include benzo(b)fluoranthene, benzo[a]pyrene, dibenzo(a,h)anthracene. Contamination has been detected in soil.

If you live near this site and have health concerns, your state health department can provide site-specific guidance. EPA maintains a community involvement program for most NPL sites, and site documents — including the Record of Decision, five-year reviews, and public health assessments — are typically available through EPA's Superfund site profile.