PUBLIC NOTICE | Preliminary Decision to Issue a Significant Amendment to an APP for ASARCO LLC–Mission Complex Mine Wastewater Treatment Plant

Public Notice No. 19-57

Published in: The Daily Territorial on Monday, May 11, 2020

Pursuant to Arizona Administrative Code, Title 18, Chapter 9, Article 1, the Director of the ADEQ intends to issue a significant amendment to an Aquifer Protection Permit (APP) to the following applicant:

Facility Name

ASARCO LLC–Mission Complex Mine Wastewater Treatment Plant

Permit Type

Individual Aquifer Protection Permit No. 512406, LTF No. 81713


ASARCO LLC–Mission Complex Mine


The facility is located in Sahuarita, Arizona, over groundwater of the Tucson Active Management Area, or Santa Cruz groundwater basin, in Sections 35 and 36 in Township 16S, Range 12E; and Sections 3, 4, 5, 6, 7, 8, 9, 10, and 15 in Township 17S, Range 13E  of the Gila and Salt River Baseline and Meridian.

Review Documents

Original Published Public Notice | View/Print >
Draft Permit | View >
Draft Executive Summary | View >

You may also review the above documentation in person at the ADEQ Record Center | Learn How >

Public Comment Period 

Dates: May 11, 2020 – June 9, 2020

Comments may be submitted as follows:

     By Email | Send Email > 
     By Mail (Must be postmarked or received by June 9, 2020):

       Monica Phillips
       Groundwater Protection
       1110 W. Washington Street, 5415B-3
       Phoenix, AZ  85007