## Notice ofPublic Hearing and Comment Period

Gila River Indian Community (GRIC) Tribal ImplementationPlan 

### (TIP) For Air Quality Management

GILA RTVER INDIAN COMMUNITY, DEPARTMENT OF ENVIRONMENTAL QUALITY

The Gila River Indian Community Department ofEnvironmental Quality (DEQ) is condikting a PUBLIC HEARING on July 20,2006 and acceptingPublic Comments (July 1,2006, thru July 31,2006): Purpose of Hearing To obtainpublic comment on the proposed Gila River Indian Community, Tribal Implementation Plan (TIP) for Air Quality Management. Hearing Date July 20,2006 Hearing Time 6:00 pm 

### - 8:00 pm Hearing Location Gila River Indian Community Shelde Center 5692 N. Loop Rd. Chandler, AZ 85226
StIMMARY: The GilaRiver Indian Community (GRIC) has developed a comprehensive Tribal Implementation Plan (TIP) to manage air quality at GRIC. The TIP contains numerous 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 establish a permitting program for industriesclassified as Title V (major) and Non-Title V air pollution sources under the federal Clean Air Act. The Tribal Implementation Plan (TIP) contains several ordinances including permit requirements and fees, administrative appeals procedures, enforcement (civil and criminal),non-metallic mineral mining (aggregatemining, asphalt plants and concrete plants), secondary aluminum processing operations, solventmetal cleaning, Volatile organic Compound (VOC) usage, storage and handling, aerospace manufacturing and rework processes, open burning and visible emissions ordinances. The TIP also adopts the federal New Source Performance Standards (NSPS) and IqationalEmission Standards for Hazardous Air Pollutants (NESHAPs). In some cases, the Community is adopting standards that are more stringent than 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 Preventionof Significant Deterioration (PSD)provisions of the CAA. The Environmental Protection Agency (EPA) will continue to implement these sectionsofthe 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 Communityis 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 COMMENT PERIOD:In addition to the public hearing,the DEQ is accepting comments during a public comment period (July 1,2006

### thruJuly 3 1,2006). All written and verbal comments submittedto the DEQ duringthe public comment period will become part of the 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. Commentsmay be submitted at either the public hearing, directlyto 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 ordinances before requesting Council to enact the TIP.

Once the TIP is enacted by the Community Council,the TIP ordinances, comments and responses and support documentationwill be submitted to the U.S. Environmental Protection Agency (EPA) Region IX for approval. After approval by EPA the GRIC TIP will become federally enforceable.

Written Commentsmay be submitted during the public comment period ofJuly 1,2006 

### thruJuly 3 1,2006to:
Gila River Indian Community Department ofEnvironmental Quality P.O. Box 97 Sacaton,AZ 85247

For directionsto the SheldeBuilding or for more information, please contactthe GRIC DEQ at (520) 562-2234 or air@gilanet.net.