# ROCK SPRINGS COKING PLANT
> **Judicial** · FY1999 · — · Litigated With Penalty
## Case
- **Activity ID:** `51159`
- **Case Number:** 08-1999-0035
- **Type:** Judicial
- **Lead:** EPA
- **Outcome:** Litigated With Penalty
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** N
## Defendants
- MONSANTO COMPANY (complaint) (settlement)
- P4 PRODUCTION (complaint) (settlement)
- SOLUTIA INC. (complaint) (settlement)
## Summary

THE PROPOSED DEFENDANTS IN THIS CASE ARE MONSANTO COMPANY,   SOLUTIA INC., AND P4 PRODUCTION.  MONSANTO WAS THE OWNER     AND OPERATOR FROM 1995 TO 1997, AND P4 AND SOLUTIA ARE THE   CURRENT OWNER AND OPERATOR, RESPECTIVELY, OF A COKING OR     COAL CALCINER PRODUCTION FACILITY LOCATED NEAR ROCK SPRINGS, WYOMING.  THE MAIN INCINERATOR STACK EMITS PARTICULATES      GENERATED BY THE COKE PRODUCTION PROCESS.  PERFORMANCE TESTS OF THE INCINERATOR MAIN STACK EMISSIONS FROM AUGUST 1995 TO  THE PRESENT SHOW VALUES GREATLY IN EXCESS OF THE ALLOWABLE   LIMIT. THE PROPOSED PENALTY IS $4,598,070.  INJUNCTIVE       RELIEF IS ALSO BEING SOUGHT.

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