# ARIZONA PUBLIC SERVICE
> **Judicial** · FY1990 · — · Combined With Another Case(s)
## Case
- **Activity ID:** `52226`
- **Case Number:** 09-1990-0039
- **Type:** Judicial
- **Lead:** EPA
- **Outcome:** Combined With Another Case(s)
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** N
## Defendants
- ARIZONA PUBLIC SERVICE (complaint)
## Summary

ARIZONA PUBLIC SERVICE OWNS AND OPERATES THE CHOLLA        GENERATING STATION NEAR JOSEPH CITY IN NAVAJO COUNTY, AZ.    IN 1983, APS MODIFIED ONE OF TIS FOUR COAL-FIRED BOILERS     (UNIT 2) MAKING THE UNIT SUBJECT TO NSPS, SUBPART DA         AND THE PSD PERMITTING REQUIREMENTS.  APS HAS FAILED TO      SUBMIT REPORTS AND INSTALL EMISSION MONITORS AS REQUIRED     BY SUBPART DA AND HAS FAILED TO OBTAIN A PSD PERMIT PRIOR    TO MODIFYING THE FACILITY.  IN ADDITION, APS VIOLATED        THE ARIZONA STATE IMPLEMENTATION PLAN (SIP) BY OPERATING     UNIT 3IN. EXCESS OF THE SO2 EMISSION LIMITS.

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