* * * PUBLIC NOTICE * * * 

NOTICE OF INTENT TO RENEW A CLEAN AIR ACT 

TITLE V FEDERAL OPERATING PERMIT 

The Region 9 office of the United States Environmental Protection Agency (EPA) requests 

public comment on a draft Operating Permit renewal for ASARCO Mission Complex, a facility 

that mines and processes copper sulfide ore, located on the reservation of the Tohono O’odham 

Nation. 

This facility is required to renew its Clean Air Act Title V Operating Permit in accordance with 

40 CFR Part 71. The permit contains all the Clean Air Act requirements that apply to the source 

and requires that the source conduct monitoring sufficient to enable US EPA and the public to 

determine whether the source is complying with the applicable air quality requirements. This 

proceeding is subject to the administrative requirements of 40 CFR 71.11. 

Members of the public may review a copy of the draft permit prepared by US EPA, the statement 

of basis for the draft permit, the application, and all supporting materials submitted by contacting 

Roger Kohn at (415) 972-3973 or kohn.roger@epa.gov, or by writing to: 

 Roger Kohn (AIR-3) 

 EPA, Region 9 

 75 Hawthorne Street 

 San Francisco, CA 94105 

All documents will be available for review at the US EPA Region 9 office Monday through 

Friday from 9:00 A.M. until 4:00 P.M.(excluding federal holidays). 

Pursuant to 40 CFR 71.11(f), EPA shall hold a Public Hearing if the Regional Administrator 

finds, on the basis of requests, a significant amount of public interest in a draft permit. Requests 

for a Public Hearing must contain the reasons for requesting a hearing. If a Public Hearing is 

granted, a public notice stating the date, time and place of the hearing will be made at least 30 

days prior to the hearing and the comment period will be extended through the hearing date. 

All comments upon or objections to the draft permit and requests for a Public Hearing must be 

sent or delivered in writing to Roger Kohn at the address shown by October 27, 2011. An 

extension of the 30-day comment period may be granted if the request for an extension 

adequately explains why more time is required to prepare comments. All comments received 

prior to the end of the public comment period and all comments made during a public hearing 

will be considered in arriving at a final decision on the permit. The final permit is a public 

record that can be obtained upon request. A statement of reasons for changes made to the draft 

permit and responses to comments received will be sent to all persons who commented on the 

draft permit. 
If you believe any condition of the draft permit is inappropriate or that our initial decision 

to deny an application, terminate a permit, or prepare a draft permit is inappropriate, you 

must raise all reasonably ascertainable issues and submit all reasonably ascertainable 

arguments supporting your position by the end of the comment period. 

If you would like to be added to the mailing list for updates on a particular facility or for 

updates on EPA’s Title V Operating Permit program, please contact EPA at the address 

listed above. Please bring the foregoing notice to the attention of all persons who you 

know would be interested in this matter.