# IRON MOUNTAIN MINES, INC.
> **Judicial** · FY1990 · — · Final Order With Specified Cost Recovery
## Case
- **Activity ID:** `52205`
- **Case Number:** 09-1990-0018
- **Type:** Judicial
- **Lead:** EPA
- **Outcome:** Final Order With Specified Cost Recovery
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** $821.94M
- **Multimedia (multi-env):** N
## Defendants
- ARMAN, T.W. (complaint) (settlement)
- AVENTIS CROP SCIENCES, INC. (settlement)
- IRON MOUNTAIN MINES, INC. (complaint) (settlement)
- RHONE-POULENC BASIC CHEMICALS CO. (complaint)
- STAUFFER MANAGEMENT COMPANY, INC. (settlement)
## Summary

IN THIS ACTION UNDER SECTION 107 OF THE COMPREHENSIVE      ENVIRONMENTAL RESPONSE, COMPENSATION AND LIABILITY ACT       ( CERCLA ), 42 U.S.C. 9607 AND 28 U.S.C. 2201, THE           ENVIRONMENTAL PROTECTION AGENCY ( EPA ) IS SEEKING A         JUDGMENT FOR PAST AND FUTURE RESPONSE COSTS AT THE IRON      MOUNTAIN MINE NATIONAL PRIORITIES LIST SITE ( IMM  OR  THE   SITE ) AGAINST THE CURRENT OWNERS AND THE SUCCESSOR TO THE   FORMER OWNERS AND OPERATORS OF THE MINE.  EPA EXPECTS THE    DEFENDANTS WILL BE ABLE TO SATISFY THE JUDGMENT IN FULL.       IRON MOUNTAIN MINE IS A LARGE SUPERFUND SITE NEAR REDDING, CALIFORNIA.  IRON MOUNTAIN MINE WAS PLACED ON THE NATIONAL   PRIORITIES LIST BECAUSE OF THE METAL-LADEN ACID MINE         DRAINAGE WHICH FLOWS FROM ABANDONED MINE WORKINGS INTO THE   SACRAMENTO RIVER, A MAJOR FISHERY AND SOURCE OF DRINKING     WATER FOR REDDING.  THE NATIONAL OCEANIC AND ATMOSPHERIC     ADMINISTRATION ( NOAA ) HAS IDENTIFIED THE AFFECTED AREA AS  THE MOST IMPORTANT SALMON HABITAT IN THE STATE.                FROM THE LATE NINETEENTH CENTURY UNTIL 1963, MOUNTAIN      COPPER COMPANY, LTD., A BRITISH CORPORATION, MINED THE       MOUNTAIN FOR IRON AND OTHER METAL-BEARING ORES.  THE ACID    MINE DRAINAGE RESULTING FROM MOUNTAIN COPPER'S MINING        ACTIVITIES FLOWS INTO THE SACRAMENTO RIVER JUST UPSTREAM     OF THE KESWICK DAM, BUILT BY THE UNITED STATES BUREAU OF     RECLAMATION ( USBR ).  THE CONSTRUCTION OF KESWICK AND       SHASTA DAMS HAS ALTERED THE FLOW REGIM

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