Pima County, Ariz. (Nov. 7, 2011) – The Pima County Department of Environmental Quality will hold a public hearing in Green Valley Tuesday, Nov. 15, 2011, on the request by ASARCO for a revision to its ASARCO Mission Complex air quality permit.
The open pit copper mine operates along I-19, in Sahuarita.
The hearing will be at the Joyner Green Valley Branch Library, 601 N. La Canada Drive, Green Valley, Ariz. from 5 p.m. to 6 p.m.
This is an opportunity for the public to speak about a proposed revision to the current ASARCO air quality permit, or to drop off written comments about the permit revision request.
ASARCO has applied for a revision to the air quality permit. The company seeks to increase the Ball Mill capacity at the South Mill, as well as to upgrade and/or add pollution-control equipment. As a result of the capacity increase, ASARCO has proposed an emission limitation of 12,500,000 tons per year on the South Mill Crusher, which is below the currently allowed capacity.
In addition to limiting emissions, the draft air-quality permit revision would require ASARCO to test the new pollution-control equipment in order to demonstrate compliance with the emission limitation.
The draft revised ASARCO permit also has additional monitoring and recordkeeping provisions that would require ASARCO to demonstrate compliance with the emission limitation.
Copies of the permit application, the draft revised air-quality permit and relevant background material may be reviewed during normal business hours at the PDEQ office. These materials may also be viewed online at www.deq.pima.gov. For more information, please contact Beth Gorman at DEQ at (520) 243-7446.