APPENDIX I – APPLICANT PROJECT MITIGATION

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APPENDIX I APPLICANT PROJECT MITIGATION RIPSEY WASH TAILINGS STORAGE FACILITY ENVIRONMENTAL PROTECTION MEASURES AND MONITORING (CORPS FILE NO. SPL-2011-1005-MWL) Prepared for: US Army Corps of Engineers Prepared by: WestLand Resources, Inc. On Behalf of: ASARCO LLC Date: June 19, 2015 TABLE OF CONTENTS AND BACKGROUND ........................................ ........................................ ....... 2 QUALITY ........................................ ........................................ ........................................ .......... 3 WATER PROTECTION MEASURES ........................................ ................................... 3 Stormwater Diversions ........................................ ........................................ ............................. 4 Upgradient Dam and Spillway.

• Arizona Pollutant Discharge Elimination System Mining Multi-sector General Permit (AZPDES Mining MSGP) (ADEQ) • Title V permit amendment (Pinal County) • Mined Land Reclamation permit (Arizona State Mine Inspector) The purpose of this memorandum is to provide a list of the proposed environmental protection and

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