# ARIZONA PUBLIC SERVICE COMPANY
> **Judicial** · FY1987 · — · Final Order With Penalty
## Case
- **Activity ID:** `52119`
- **Case Number:** 09-1987-0023
- **Type:** Judicial
- **Lead:** EPA
- **Outcome:** Final Order With Penalty
- **Penalty assessed:** $1.31M
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** N
## Defendants
- ARIZONA PUBLIC SERVICE COMPANY (complaint) (settlement)
## Summary

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