## Notice of Public Hearing and Comment Period

Gila River Indian Community (GRIC) Tribal Implementation Plan (TIP) For Air Quality Management

GILA RIVER INDIAN COMMUNITY, DEPARTMENT OFENVIRONMENTAL QUALITY
The Gila River Indian Community Department of Environmental Quality (DEQ) is conductinga PUBLIC HEARING on June 22,2005 and acceptingPublic Comments (May 13,2005

### thruJuly 1,2005): Purpose ofHearing To obtain public comment on the proposed GilaRiver Indran Community, Tribal Implementation Plan (TIP) for Air Quality Management. Hearing Date June 22,2005 Hearing Time 4:00 pm - 8.00 pm Hearing Location Gila River Indian Community District 4 Service Center Sesame Rd & Stotonic Rd. Sacaton,AZ 85247
SUMMARY: The Gila River Indian Community (GRIC)has developed a comprehensive Tribal Implementation Plan (TIP) to manage air quality at GRIC. The TIP containsnumerous ordinances which are designed to limit air pollution from a variety of industrial, area and general sources within the Community. The GRIC TIP ordinances also establisha permittingprogram for industries classified as Title V (major) and Non-Title V air pollution sources under the federal Clean Air Act.
The TribalImplementation Plan (TIP) contains several ordinances including permit requirements and fees, administrative appeals procedures, enforcement (civil and criminal), non-metallic mineral mining (aggregate mining, asphaltplants and concrete plants), secondary aluminum processing operations, solvent metal cleaning, Volatile Organic Compound (VOC) usage, storageand handling, aerospace manufacturing and rework processes, open burning and visible emissionsordnances. The TIP also adopts the November 1,2004 version ofthe federal New SourcePerformance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAPs). In some cases, the Community is adopting standards that are more stringentthan the federal standards. The GRIC TIP contains a detailed permit program for both Title V sources and Non-title V sources and sets the process for making changes at industrial facilities. The Community is not proposing to implement the major source New Source Review(NSR) nor the major source Prevention of SignificantDeterioration(PSD) provisions of the CAA. The Environmental ProtectionAgency (EPA) will continue to implementthese sections ofthe CAA at GRIC. The TIP also adopts the National Ambient Air Quality Standards(NAAQS) as GRIC Standards.
PUBLIC HEARING: This notice invites all members ofthe public to a hearing on the proposed GRIC Tribal Implementation Plan for Air Quality Management. As required under the Clean Air Act, the Gila River Indian Community is providing an opportunity for interested parties to submit comments on the Implementation Plan through a formal public hearing or to the GRIC Department ofEnvironmental Quality during the public comment period (below).
PUBLIC COMMENTPERIOD:

### In addition to the public hearing, the DEQ is accepting comments during a public comment period (May 13,2005thru July 1,2005). All written and verbal comments submitted to the DEQ during the public comment period will become part ofthe public record.
The DEQ will summarize, in writing, all public comments, recommended responses to those comments and any changes to the proposed ordinancesbased on the comments. Comments may be submitted at eitherthe public hearing, directly to the DEQ in writing or via e-mail at the address below. The DEQ will submit the comments and recommended responses to GRIC Committees and Council along with the proposed form of ordinancesbefore requesting Council to enact the TIP.
Once the TIP is enacted by the Community Council, the TIP ordinances, comments and responses and support documentation will be submitted to the U.S. Environmental Protection Agency (EPA) Region 

### IXfor approval. After approval by EPA the GRIC TIP will become federally enforceable.
Written Commentsmay be submitted during the public comment period ofMay 13 through July 1,2005to:
Gila River Indian Community Department ofEnvironmental Quality P.O. Box 97 Sacaton, AZ 85247
For more information, please contact the GRIC DEQ at (520) 562-2234 or airagilanet.net.