# ST. MARY'S CEMENT INC.
> **Judicial** · FY2006 · — · Final Order With Penalty
## Case
- **Activity ID:** `600009140`
- **Case Number:** 05-2006-5039
- **Type:** Judicial
- **Lead:** EPA
- **Outcome:** Final Order With Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- ST. MARYS CEMENT INC. (complaint) (settlement)
## Summary

The St. Mary's Cement facility in Dixon, Illinois operates four cement kilns: Kilns 1 though 3 are pre-heater kilns and Kiln 4 is called a long-dry kiln.  The Consent Decree (CD) addresses Prevention of Significant Deterioration (PSD) nitrogen oxide (NOx) violations related to the facility's use of petroleum coke as a fuel. The CD requires the installation of Selective Non-Catalytic Reduction (SNCR) control technologies to reduce 4,600,000 pounds of NOx emissions, which will cost a total of $1,900,000, at the facility.  The facility will have the option of permanently shutting down Kiln 4, or replacing the unit with a new kiln which uses SNCR that reduces NOx emissions to a lower rate.  The CD also requires that each kiln operates with a NOx continuous emission monitor, which continuously measures NOx emissions from each stack.

---
*Source: [EPA ECHO](https://echo.epa.gov/) · AI Analytics · CC0 1.0*