S TAT E O F N EVA D A jim Gibbons, Governor 

De~artment of Conservation & Natural Resources Allen Bia~gi, Director --- 

DIVISION OF ENVIRONMENTAL PROTECTION Leo M. Drozdofi P.E., Administrotor 

protecting the future for generations 

September 1, 20 10 

Jared Blumenfeld, Regional Administrator 

OAR-], USEPA Region IX 

75 Hawthorne Street 

San Francisco, CA 94 105 

Dear Mr. Blumenfeld: 

On behalf of Governor Gibbons, as his appointed designee, this letter transmits to you two hard 

copies of Clark County's revisions to their major source permitting program regulations and five 

compact discs. Additionally, the regulations may be viewed on Clark County's website at 

http:.~lwww.accessclar~unty.coddepts~es/work index.aspx. The Nevada 

Division of Environmental Protection (NDEP) requests approval of the enclosed revisions to 

Clark County's Air Quality Regulations (AQR) into the Nevada State Implementation Plan 

(SIP). 

'The enclosed package includes revisions to Sections 0 and 25 of the Clark County AQR, new 

Sections 12.2, 12.3 and 12.4, and the repeal of existing Section 16. Sections 0 and 25 are 

currently part of the SIP; the enclosed revisions are intended to replace the existing sections. 

New Sections 12.2, 12.3 and 12.4 replace the major source provisions of existing AQR Section 

12. Please refer to the enclosed letter from the Clark County Department of Air Quality and 

Environmental Management (DAQEM) to the NDEP for more detail regarding the SIP changes. 

'The regulations were adopted by the Clark County Board of County Commissioners on May 18, 

2010. Evidence of adoption, appropriate public notice and the participation process is included 

in this package, as well as a tabulation of public comments and Clark County's response. If you 

should have any questions about this submittal or require additional clarification, you may 

contact Russell Roberts of the Clark County DAQEM at (702) 455- 161 1. 

Sincerely, 

Colleen Cripps, Ph.D. 

Acting Administrator 

Enclosures 

cc wio enclosures: Robin Reedy, Chief of Staff, Office of the Governor 

Leo Drozdoff, Acting Director, DCNR 

Greg Remer, Chief. Bureau of Air Quality Planning, NDEP 

Tina Gingras, Assistant Director, Clark County DAQEM 

Russell Roberts, Rules Project, Clark County DAQEM 

Jefferson Wehling. Air Attorneys (ORC-2). EPA Region 1X 

Gerardo Rios. Permits Office (AIR-3), Air Division, EPA Region IX 

Certified Mail No. 7009 34 10 0000 1454 1395 

90 1 S. Stewart Street, Suite 400 1 Carson City, Nevada 8970 1 p: 775.687.4670 f: 775.687.5856 www.ndep.nv.gov &A 

prmred on recycled poper 
DEPARTMENT OF AIR QUALITY & ENVIRONMENTAL MANAGEMENT 

500 S Grand Central Parkway 1 st Floor . Box 5552 10 . Las Vegas, NV 891 55-52 10 

(702) 455-5942 . FOX (702) 383-9994 

Lewis Wallenmeyer Director . Tina Gingras Assislonf Director 

Nevada 

Environmental Protection 

August 24,20 10 

AUG 3 1 2010 

Ms. Colleen Cripps, Acting Administrator 

Nevada Division of Environmental Protection 

901 South Stewart Street, Suite 400 1 

Carson City, Nevada 89701 -5249 

Re: Revision to Clark County Air Quality Regulation Sections 0 and 25 and 

Adoption of New Air Quality Regulation Sections 12.2,12.3 and 12.4 - 

Revision to the State Implementation Plan 

Dear Ms. Cripps: 

On May 18, 2010, the Clark County Board of County Commissioners adopted revisions to Sections 0 

and 25 of the Clark County Air Quality Regulations (AQRs) and also adopted new Sections 12.2, 12.3 

and 12.4. Sections 0 and 25 are currently part of the Clark County portion of the Nevada State 

Implementation Plan (SIP), which the revised rules are intended to replace. Sections 12.2, 12.3 and 12.4 

are proposed for incorporation into the SIP, replacing the major source provisions of existing AQR 

Section 12. As you know, revising and adopting these regulations constitutes a revision of the SIP and 

accordingly, these actions were conducted consistent with the requirements of 40 CFR Part 5 1, $5 1.102 

and Appendix V of Part 5 1. 

The Board's action consisted of the following: 

Adoption of a revision to Section 0: Definitions (Only two terms, "permanent" and "surplus" were 

revised) 

Adoption of a revision to Section 25: Affirmative Defense for Excess Emissions Due to 

Malfunctions, Startup and Shutdown 

Adoption of a new AQR Section 12.2: Permit Requirements for Major Sources in Attainment Areas 

Adoption of a new AQR Section 12.3: Permit Requirements for Major Sources in Nonattainment 

Areas 

Adoption of new AQR Section 12.4: Authority to Construct Application and Permit Requirements 

for Part 70 Sources 

Repeal of existing Section 16: Operating Permits 

BOARD OF COUNTY COMMISSIONERS 

Rory Reid Choirrnon . Susan Broger Vice-Choirmon 

Larry Brown, Tom Collins, Chris Giunchigliani, Sfeve Sisolak, Lawrence Weekly 

Virginia Valentine, PE, County Monoger