Clark County Department of Air Quality 

Ozone Advance Program 

Path Forward 

June 2014 
Clark County: Ozone Advance Program Path Forward 

ii 

 
Clark County: Ozone Advance Program Path Forward 

iii 

Table of Contents 

1. Introduction .......................................................................................................................... 1-1

Current Attainment Status........................................................................................................ 1-1

Impacts of Meteorological Conditions on Ozone Concentrations ........................................... 1-3

2. Emission Sources ................................................................................................................. 2-1

Emissions and Source Categories ............................................................................................ 2-2

Source Apportionment Modeling ............................................................................................ 2-4

3. Stakeholders ......................................................................................................................... 3-1

4. Outreach, Education and Voluntary Control Measures ....................................................... 4-1

Private Companies ................................................................................................................... 4-4

5. Local Mandatory Measures .................................................................................................. 5-1

Air Quality Regulations ........................................................................................................... 5-1

Inspection and Maintenance Program ...................................................................................... 5-2

Renewable Portfolio Standard ................................................................................................. 5-3

Progress ................................................................................................................................ 5-4

Future Planned Projects ....................................................................................................... 5-5

2013 Emission Reductions ................................................................................................... 5-6

6. Potential Voluntary Control Measures ................................................................................. 6-1

DAQ-Specific .......................................................................................................................... 6-1

Electric Vehicle Purchase .................................................................................................... 6-1

Vacuum-Assist Stage II Disabling Assistance Program ...................................................... 6-1

Vapor Processor Rebate Program ........................................................................................ 6-1

Other Entities ........................................................................................................................... 6-1

7. Future Mandatory Control Measures ................................................................................... 7-1

Federal Rules ........................................................................................................................... 7-1

Reid Gardner Power Plant ....................................................................................................... 7-1

Project Neon............................................................................................................................. 7-1

Boulder City Bypass ................................................................................................................ 7-2

8. Path Forward Implementation .............................................................................................. 8-1

On-road and Non-road Mobile Emission Reductions .............................................................. 8-1

Stage II Vapor Recovery and Control Systems ....................................................................... 8-1

Congestion Mitigation and Air Quality Projects ..................................................................... 8-1

DAQ Public Education and Outreach Program ....................................................................... 8-2

Renewable Portfolio Standard ................................................................................................. 8-2
Clark County: Ozone Advance Program Path Forward 

iv 

Conclusion ............................................................................................................................... 8-2

 
Clark County: Ozone Advance Program Path Forward 

v 

List of Figures 

Figure 1-1: Clark County Ozone Maintenance and Attainment/Unclassifiable Areas. ............... 1-1

Figure 1-2: Design Value History. ............................................................................................... 1-2

Figure 1-3. Average wind speeds at McCarran (1989-2012). .................................................... 1-4

Figure 1-4. Wind Directions in Clark County. ........................................................................... 1-4

Figure 1-5. Airflow in Clark County. ......................................................................................... 1-5

Figure 2-1. NOx Source Apportionment. .................................................................................... 2-1

Figure 2-2. VOC Source Apportionment. ................................................................................... 2-2

Figure 5-1. Clark County Emissions Testing Area. .................................................................... 5-3

Figure 5-2. Monthly NOx Reductions. ........................................................................................ 5-7

List of Tables 

Table 1-1. Fourth Highest Concentrations .................................................................................. 1-3

Table 1-2. 2013 Design Values for Clark County ...................................................................... 1-3

Table 2-1. NOx Emissions for 2008 and 2011 ............................................................................. 2-1

Table 2-2. VOC Emissions for 2008 and 2011 ............................................................................ 2-2

Table 2-3. NOx Emissions in 2011 .............................................................................................. 2-2

Table 2-4. VOC Emissions for 2011 ............................................................................................ 2-3

Table 2-5. Emissions for Reid Gardner ....................................................................................... 2-3

Table 4-1. Southwest Gas Incentive Programs ............................................................................ 4-6

Table 5-1. Future RE Projects ...................................................................................................... 5-5

Table 5-2. New & Proposed Capacities ....................................................................................... 5-5

Table 5-3. Inputs for AVERT Model ........................................................................................... 5-6

Table 5-4. Model Outputs ............................................................................................................ 5-6
Clark County: Ozone Advance Program Path Forward 

vi 

List of Acronyms and Abbreviations 

Acronyms 

AQR Clark County Air Quality Regulation 

BCC Clark County Board of County Commissioners 

CFR Code of Federal Regulations 

DAQ Clark County Department of Air Quality 

EPA U.S. Environmental Protection Agency 

I/M Nevada Vehicle Inspection and Maintenance Program 

HA Hydrographic Area 

MEGAN Model of Emissions of Gases and Aerosols from Nature 

NAAQS National Ambient Air Quality Standards 

NAC Nevada Administrative Code 

NDEP Nevada Division of Environmental Protection 

NEI National Emissions Inventory 

NRS Nevada Revised Statues 

RTC Regional Transportation Commission of Southern Nevada 

SIP state implementation plan 

SLAMS State and Local Air Monitoring System 

SBAP Small Business Assistance Program 

SNFA Southern Nevada Fleet Association 

SNRCP Southern Nevada Regional Planning Coalition 

TAC Technical Advisory Committee 

WESTAR Western States Air Resources Council 

Abbreviations 

CO carbon monoxide 

KWh kilowatt hour 

MW megawatt 

NOx nitrogen oxides 

ppb parts per billion 

tpy tons per year 

VOC volatile organic compounds 
Clark County: Ozone Advance Program Path Forward 

1-1 

1. Introduction 

The Clark County Department of Air Quality (DAQ) enrolled in EPA’s Ozone Advance program 

on June 12, 2013. The program’s goal is to help maintenance and attainment areas reduce 

emissions to ensure continued health protection, to better position those areas to remain in 

attainment, and to efficiently direct available resources toward actions to address ozone and its 

precursors quickly. To this end, DAQ has implemented a set of stringent Air Quality Regulations 

(AQRs) in Clark County. 

Current Attainment Status 

Clark County is a maintenance area for the 1997 8-hour ozone National Ambient Air Quality 

Standard (NAAQS) and is in attainment/unclassifiable for the 2008 8-hour ozone standard. The 

state of Nevada uses hydrographic areas (HAs) to define airsheds. In Clark County, HAs 164A, 

164B, 165, 166, 167, 212, 213, 214, 216, 217, and 218 are in the ozone 

“attainment/unclassifiable” and “maintenance” areas (Figure 1-1). 

Figure 1-1: Clark County Ozone Maintenance and Attainment/Unclassifiable Areas. 
Clark County: Ozone Advance Program Path Forward 

1-2 

The redesignation of the Clark County nonattainment area for the 1997 8-hour ozone standard 

became effective on February 7, 2012 (Vol. 78, pg. 1149 of the Federal Register [78 FR 1149]). 

Clark County is an “attainment/unclassifiable” area under the 2008 8-hour ozone standard. 

The design value history in Figure 1-2 shows a downward trend from 2007 through 2011; 

however, the design values increased in 2012 and 2013. 

Figure 1-2: Design Value History. 

Clark County was impacted by several fires during the 2012 and 2013 wildfire seasons, and the 

impacts from these fires raised the design values by a few parts per billion (ppb). Table 1-1 

shows the fourth highest concentrations for 2013; the highest concentrations occurred during the 

fires on May 4 and July 3, 2013. 
Clark County: Ozone Advance Program Path Forward 

1-3 

Table 1-1. Fourth Highest Concentrations

Monitoring 

Site 

Highest Second Highest Third Highest Fourth Highest 

Date Value Date Value Date Value Date Value

Apex 6/21/2013 78 4/30/2013 74 5/5/2013 73 5/4/2013 73 

Mesquite 5/22/2013 68 5/16/2013 68 6/21/2013 67 6/18/2013 67 

Paul Meyer 7/3/2013 87 5/4/2013 80 5/25/2013 76 6/21/2013 75 

Walter Johnson 7/3/2013 87 5/4/2013 80 5/25/2013 75 7/19/2013 74 

Palo Verde 7/3/2013 83 5/4/2013 82 5/25/2013 76 7/19/2013 74 

Joe Neal 7/3/2013 81 6/21/2013 77 5/4/2013 77 7/20/2013 76 

Winterwood 5/4/2013 76 6/21/2013 75 5/25/2013 73 5/21/2013 71 

Jerome Mack 5/4/2013 74 5/25/2013 73 6/21/2013 72 5/21/2013 69 

Boulder City 6/21/2013 74 5/22/2013 72 5/21/2013 72 6/22/2013 71 

Jean 5/4/2013 84 5/21/2013 78 5/25/2013 76 6/21/2013 75 

JD Smith 6/21/2013 76 5/25/2013 74 5/4/2013 74 6/5/2013 72 

DAQ has submitted an exceptional event package for wildfires on May 23, 2012, and is in the 

process of completing exceptional event packages for the 2013 fires. Hopefully, the Region 9 

office of the U.S. Environmental Protection Agency (EPA) will concur with our findings, which 

will lower the design values near or under the NAAQS. Our design value for calendar year 2013 

is currently 77 ppb (Table 1-1). 

Table 1-2. 2013 Design Values for Clark County 

Monitoring Site Fourth Highest Average DV 

2011 2012 2013 

Jerome Mack 73 76 69 72 

Paul Meyer 78 77 75 76 

Winterwood 73 74 71 72 

Joe Neal 77 80 76 77 

Boulder City 70 77 71 72 

Jean 74 77 75 75 

Walter Johnson 77 78 74 76 

Palo Verde 77 78 74 76 

J.D. Smith 72 76 72 73 

Impacts of Meteorological Conditions on Ozone Concentrations 

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by high pressure those results in a stable atmosphere and light winds aloft. Regional wind fields 

are also influenced by the local terrain, which channels winds through passes, slopes, and 

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Clark County: Ozone Advance Program Path Forward 

2-3 

TIER 1 NAME NOx % of Total 

SOLVENT UTILIZATION 0.36 0.00 

METALS PROCESSING 0.20 0.00 

TOTAL 53,562.48 100.00 

Biogenics make up the highest category of VOC emissions, accounting for 76% of the 2011 

total. On-road vehicles are the second-highest category, followed by solvent utilization. 

Table 2-4. VOC Emissions for 2011

TIER 1 NAME VOC % of Total 

BIOGENICS - VEGETATION & SOIL 126,574.00 76.52 

HIGHWAY VEHICLES 12,744.08 7.70 

SOLVENT UTILIZATION 12,675.41 7.66 

OFF-HIGHWAY 8,838.12 5.34 

STORAGE & TRANSPORT 2,057.69 1.24 

FUEL COMB. OTHER 1,114.26 0.67 

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FUEL COMB. INDUSTRIAL 13.29 0.01 

PETROLEUM & RELATED INDUSTRIES 11.26 0.01 

METALS PROCESSING 4.76 0.00 

TOTAL 165,416.80 100.00 

The Reid Gardner power plant, owned by NV Energy, contributed 80% of the utility NOx total in 

2011, or 3,034 tons per year (tpy) (Table 2-5). 

Table 2-5. Emissions for Reid Gardner 

TPY Percent 

NEI 2011 Utilities 3,788.70 100.00% 

Reid Gardner utility boilers 2011 3,034.02 80.08% 

Reid Gardner utility boilers 2013 1,847.85 60.90% 

 
Clark County: Ozone Advance Program Path Forward 

2-4 

In June 2013, Nevada’s governor signed a law accelerating the retirement of Reid Gardner 

Generating Station. Three of the plant's four units will close in 2014, and the remaining unit will 

close in 2017. Currently, the boilers are coal fired; the fuel conversion from coal to natural gas at 

the plant will significantly reduce NOx emissions in Clark County. 

According to EPA’s Air Markets Program Data,3

 total 2011 NOx emissions in Clark County 

were 3,789 tpy, with a Reid Gardner contribution of 3,034 tpy, or 80 percent. In 2013, however, 

Reid Gardner NOx emissions were 1,848 tpy, a reduction of 61 percent from 2011 levels (Table 

2-5). To offset the closure of the plant, NV Energy will construct or obtain 150 megawatts (MW) 

of renewable energy in upcoming years. 

Source Apportionment Modeling 

DAQ has conducted several studies to characterize ozone transport, and the results show that 

interstate transport significantly impacts Clark County. Transport from Asia and stratospheric 

ozone intrusions also contribute to ozone concentrations. However, it is almost impossible to 

quantify transport contributions from any of these sources. Nevertheless, DAQ plans to perform 

source apportionment modeling in the near future, with the goal of identifying sources that affect 

ozone concentrations in the county. The new computer modeling platform that EPA is proposing 

may be able to analyze interstate transport and better characterize source contributions. 

Past modeling results show that the background ozone concentration in Clark County is between 

40 and 45 ppb. The same results also show that transport into Clark County from inside and 

outside the United States is between 20 and 40 percent, depending on the episode. 

 

 

3 http://ampd.epa.gov/ampd/. 
Clark County: Ozone Advance Program Path Forward 

3-1 

3. Stakeholders 

DAQ has engaged with stakeholder groups for many years to provide a forum to review and 

provide feedback on state implementation plans, Exceptional Event Rule demonstration 

packages, county rulemakings, etc. Stakeholder groups include members of the regulated 

community, environmental groups, other Clark County communities, state agencies, and the 

EPA. 

In August 2001, the department’s Management Board established the Technical Advisory 

Committee (TAC). The TAC consists of representatives from local and state governments, as 

well as private sector stakeholders. Its mission is to: 

 Provide input on technical and policy issues to the Clark County Air Quality 

Management Board and the Executive Advisory Committee; 

 Discuss and recommend solutions to conflicts, challenges, or policy issues relating to air 

quality programs in Clark County; 

 Ensure that the respective governing bodies of local governments and state agencies are 

kept abreast of all issues of concern, challenges, and progress in the development and 

implementation of air quality programs in Clark County; and 

 Provide assistance to the DAQ management staff. 

The TAC provides essential oversight and assistance in building consensus on policy and 

technical issues and in resolving problems as we move forward with a variety of programs to 

improve air quality in southern Nevada. The committee is scheduled to meet quarterly; 

occasionally, more frequent meetings are needed to address specific issues and work programs. 

All meetings of the TAC are publicly noticed, and the public is invited to attend. 

Members of the Technical Advisory Committee (TAC) represent the following: 

 Clark County 

 City of Boulder City 

 Regional Transportation Commission 

 Nevada Division of Environmental Protection 

 City of North Las Vegas 

 City of Henderson 

 Nevada Division of Weights and Measures 

 City of Mesquite 

 Associated General Contractors 

 Various citizen and environmental groups 

 Southern Nevada Homebuilders Association 
Clark County: Ozone Advance Program Path Forward 

3-2 

 Bureau of Land Management 

 Clark County Department of Aviation 

 Nevada Department of Transportation (NDOT) 

 Nevada Department of Agriculture 

 University of Nevada, Las Vegas (UNLV) 

 Western States Petroleum Association 

 American Trucking Association 

 Public Utilities Commission 

 Silver State Materials Corporation 

 Nevada Motor Transport Association 

 Manufacturing industry 

 Las Vegas Paiute Tribe. 

Clean Cities (Las Vegas Clean Cities Coalition) is an organization that works with vehicle fleet 

managers, fuel suppliers, community leaders, and others throughout the county to decrease fuel 

use in transportation. The Southern Nevada Fleet Association (SNFA) is a subcommittee of 

Clean Cities, a nonprofit whose goal is to improve efficiency and reduce operating costs by 

advancing clean technologies, networking between agencies, education, and training. 

SNFA provides the following tools to its members: 

 Technical training, both for fleet managers and technicians 

 Educational programming 

 Networking 

 Newsletters 

 Problem-solving forums 

 Strategies for reducing operating costs 

 Grant access and information 

 High-level speakers, manufacturers, and expert panels 

 Best practices for fleets 

 Fleet scorecards and benchmarking 

 Web site blogs and forums 

 Equipment and vehicle purchasing methods 

 Specification writing and a library of sample specifications. 

The Metropolitan Planning Subcommittee (MPS) assists the Southern Nevada Regional 

Transportation Commission (RTC) Executive Advisory Committee in preparing 

recommendations to the RTC Board. The subcommittee considers transportation planning that 

needs further analysis. Members include the planning agency manager of each RTC member 
Clark County: Ozone Advance Program Path Forward 

3-3 

entity, the NDOT chief of program development, the director of the Department of Aviation, and 

the planning agency director of any incorporated city in Clark County. Additional members 

include DAQ staff and representatives from the Nevada Taxicab Authority, the Clark County 

School District, the Bureau of Land Management, the Southern Nevada Water Authority, public 

mass transit operators in Clark County, and the urban goods/freight transportation industry. 

The Southern Nevada Regional Planning Coalition (SNRPC) recognizes that fast growth 

brings about many challenges that transcend governmental jurisdictional boundaries. In January 

2000, Clark County, the cities of Boulder City, Henderson, Las Vegas and North Las Vegas, and 

the Clark County School District entered into an agreement to establish the SNRPC. Its purpose, 

guided by a 10-member board, is to “focus and capitalize on strategies that create a sustainable 

and balanced environment where economic and fiscal vibrancy, social equity, environmental 

preservation, and physical improvements are experienced by all in the community.” Projects 

include the Sustainability Initiatives, Southern Nevada Strong, the Committee on Homelessness, 

and the Regional Open Space & Trails project. 

The legal authority for the Advisory Committee on Control of Emissions from Motor 

Vehicles was established by the 2013 Nevada Legislature in Nevada Revised Statute (NRS) 

445B.830, as amended by Senate Bill 148. The committee was charged to: 

a. Establish goals and objectives for the program for control of emissions from motor 

vehicles; 

b. Identify areas where funding should be made available; and 

c. Reviewing and make recommendations concerning regulations adopted pursuant to NRS 

445B.770. 

Committee members are appointed by the deputy director of the Department of Motor Vehicles 

and meet at least quarterly. See Nevada Administrative Code AQT445B.853–857 for details. 

The Western States Air Resources Council (WESTAR) was founded in 1988 by eight western 

state air agencies, and has since grown to fifteen states and several local and tribal air quality 

agencies. It was formed to promote the exchange of information between states, share resources 

for the common benefit of members, and serve as a forum for discussing regional air quality 

issues of common concern. WESTAR changed its bylaws in 2013, allowing DAQ to join as an 

ex-officio member, and the department has been a very active participant now that ozone 

transport has become a regional issue. During meetings and conferences, WESTAR discusses 

possible control measures and other ways to reduce NOx and VOC emissions. This is an 

excellent platform to exchange information with agencies outside of Clark County and evaluate 

their control programs. 

The council’s purposes are to: 

 Promote the exchange of information related to the control of air pollution for use in state 

and federal activities, as authorized by air quality statutes and regulations. 
Clark County: Ozone Advance Program Path Forward 

3-4 

 Develop processes and procedures for consideration by western states, federal land 

managers, and EPA to meet air quality objectives and protect environmental resources. 

 Discuss air quality issues of common concern. 

 Report on the status of efforts undertaken to achieve air quality objectives. 

 Establish work groups, task forces, etc., to investigate specific topics and recommend a 

course of action for council members. 

 Adopt resolutions and policy statements for council member implementation or use 

during the development of local, state, and federal programs, regulations, and laws. 
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Clark County: Ozone Advance Program Path Forward 

4-2 

In addition, SBAP conducts outreach activities, giving presentations to business groups and 

holding workshops for specific industries that may require a more narrow focus. 

The Clark County Office of Sustainability promotes sustainability practices within Clark County. 

One of its goals is to help residents and businesses understand the options 

available regarding energy conservation, clean transportation, and recycling, 

to name a few. Some of the regional efforts the office supports are 

greenhouse gas emission reductions, the Southern Nevada Green Building 

Program, the Southern Nevada Regional Plant Program, and the Regional 

Planning Work Program. Most of these are targeted towards energy and 

resource conservation. In 2008, the Clark County Board of County 

Commissioners (BCC) adopted the “Clark County Eco-County Initiative,” 

which focuses on seven topics: air quality, water, land use/ habitat conservation, water reduction, 

green building, and energy use. 

Welcome to Fabulous Las Vegas 

Three different organizations, Clark County's Office of Sustainability, Green Chips and Clean 

Energy Project partnered to promote energy conservation in Clark County. One project they 

developed was to power the “Welcome to Fabulous Las Vegas” sign using solar photovoltaic 

energy and “...serve as a measurable stride toward a more sustainable future in Southern 

Nevada.” 

Solar photovoltaic (PV) projects and electric car charging stations 

Two 30 kilowatt (kW) solar PV arrays were installed on top of parking canopies at the Clark 

County Government Center and Development Services Campus. The array at the Government 

Center covers 20 visitor parking spaces, with six of those spaces equipped with electric vehicle 

charging stations. The Development Services Campus solar PV array is a covered parking 

installation with an interactive kiosk located inside the building. Together, these systems will 

reduce the County’s electric purchases by an estimated 52,000 kilowatt hours (kWh) per year. In 

addition, the County has an existing 30kW solar PV array located at the Spring Mountain Youth 

Camp. 

Streetlight Retrofits 

Clark County Public Works (CCPW) has converted approximately 5,000 residential 

neighborhood street lights from mercury vapor to energy efficient induction lighting that provide 

approximately 30% in energy savings, or, 850,000 kWh per year. CCPW has also replaced 400 

watt High Pressure Sodium (HPS) luminaire fixtures with 130 watt LED fixtures at 190 

signalized intersections for an energy savings of approximately 66%. Ultimately, all the 

remaining 310 signalized intersections will have the 400 watt HPS luminaire fixtures replaced to 

LED luminaire fixtures, and all new traffic signals will be equipped with LED luminaire 

fixtures. 

 
Clark County: Ozone Advance Program Path Forward 

4-3 

 

Automotive Fleet 

The County’s fleet size is 2,700 vehicles with 100% alternative fuels and 537 hybrids with an 

estimated cost savings over regular gas vehicles of approximately $1.5 million annually. By 

replacing the 537 regular gas vehicles with the same number of hybrid vehicles the County has 

reduced CO2 emissions by 1,276 tons per year. 

The City of Las Vegas has implemented the “Sustaining Las Vegas” program, which focuses on 

air quality and transportation, energy efficiency, renewable energy, green buildings, and climate 

protection. The Air Quality component promotes the purchase of fuelefficient vehicles, encourages alternative transportation methods, and 

focuses on greenhouse gas emission reduction. The city’s vehicle fleet 

includes several hybrid and electric cars, and employees have the 

opportunity to use electric bikes for short trips around the downtown area. 

Energy Efficiency and Renewables focuses on energy conservation 

programs and home energy assessments, targeting the use of alternative 

energy in the home. Additionally, the city monitors and manages energy 

consumption and costs for all city facilities, streetlights, and fleets. To that 

end, Las Vegas adopted a “Sustainability Energy Strategy” in 2008 that will help build a more 

sustainable community by conserving energy and increasing the use of renewable resources. 

The City of Henderson’s sustainability program, “OurHenderson,” focuses on being green, 

which, “in the desert...really isn’t about green at all....Being green, or sustainable, is really about 

maintaining the quality of our lives within the means of 

nature.”4

 The city thus implemented a range of energy 

conservation measures at city facilities, which add up to an 

average savings of $250,000 annually. These measures 

include remote power management to reduce computer energy demands in city facilities during 

off-peak hours, installation of new boilers at government buildings, lighting controls, an energy 

management control system for heating/air conditioning systems in city buildings, and traffic 

signal conversion from incandescent lamps to energy-saving LEDs. The city has expanded the 

number of hybrid and alternative-fuel vehicles in its fleet for a number of years, until now only 

13 percent of non-emergency vehicles use standard fuels. The weatherization program 

emphasizes energy-efficient homes; the city performs a home assessment upon request and 

suggests measures that might increase energy efficiency. Homeowners who meet certain income 

requirements may have the opportunity for home weatherization at no cost to them. 

The City of North Las Vegas introduced the ongoing “greeNLV” strategy in 

2009. The Enhanced Recycling Program cut the number of garbage pickups to 

one day a week, reducing the number of trips by garbage/recycling trucks. The 

majority of the city’s fleet has been replaced by hybrids or vehicles converted 

to alternative fuels to reduce NOx emissions. 

 

4 http://www.cityofhenderson.com/sustainability/Our_Henderson_eBook/pdf/HCD2831-OurBrochure_2.pdf. 
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4-6 

Table 4-1. Southwest Gas Incentive Programs 

Name of Rebate/Program Expiration Date Description 

Appliance Connections - Special Offer - NV Homeowner/Renter 9/30/2014 Have your gas range, dryer, or barbeque connected at a special price. Nevada Air Curtain - Business 12/31/2014 Air curtains can help you reduce your energy usage and now we have 

natural gas space heating. 

Nevada Boiler Equipment - Business 12/31/2014 Take advantage of rebates for new boilers or high-efficiency equipmenNevada Commercial Energy Audit Program 12/31/2014 An energy audit can lead you in the right direction to higher efficiency. 

$5,000/facility; $50,000/customer). 

Nevada Convection Oven - Business 12/31/2014 Using hot air, commercial convection ovens are the workhorses in com

most widely used appliances in the foodservice industry. 

Nevada Conveyor Oven - Business 12/31/2014 Save money, energy and time with a natural gas conveyor oven! Nevada Custom Commercial Rebates Program - Business 12/31/2014 Southwest Gas commercial customers in Nevada may be eligible to rec

eligible measures resulting in verifiable natural gas savings. 

Nevada Dishwasher - Business 12/31/2014 Want to save up to $2,000 on a new ENERGY STAR® qualified comm

natural gas water heating)? 

Nevada Lavatory Faucet - Business 12/31/2014 Receive a $50 rebate for Lavatory Faucet. Nevada Lavatory Faucet - Homeowner/Renter 12/31/2014 Receive a $50 rebate for Lavatory Faucet. Nevada Multi-Family Master-Metered Rebates 12/31/2014 Southwest Gas is pleased to offer rebates to multi-family master-meter

Nevada service territories. 

Nevada Natural Gas Clothes Dryer - Business 12/31/2014 Get faster heat-up and shorter drying times with a natural gas dryer. Re

purchase of a gas dryer with a moisture sensor. 

Nevada Natural Gas Storage Water Heater - Business 12/31/2014 Get higher efficiency, better insulation and heat traps, and more efficien

Unit with thermal efficiency of at least 95% and input rating > 199,000 b

Nevada Natural Gas Tankless Water Heater - Business 12/31/2014 Heat water only when you need it. Save energy, money, and space. Re

an ENERGY STAR® qualified unit. 

Nevada Natural Gas Tankless Water Heater - Homeowner/Renter 12/31/2014 Heat water only when you need it. Save energy, money, and space. Re

an ENERGY STAR® qualified unit. 

Nevada Smart Low-Flow Showerhead - Business 12/31/2014

Lower your monthly water and natural gas bill by using SmartTechnolo

$20 rebate on the purchase of a showerhead with ShowerStart Technowater heater installed in household. 
Clark County: Ozone Advance Program Path Forward 

4-7 

Name of Rebate/Program Expiration Date Description 

Nevada Smart Low-Flow Showerhead - Homeowner/Renter 12/31/2014

Lower your monthly water and natural gas bill by using SmartTechnolo

$20 rebate on the purchase of a showerhead with ShowerStart Technowater heater installed in household. 

Nevada Smarter Greener Better® Homes Program for Homebuilders 12/15/2014 Enhance customer satisfaction and increase your business potential w

provide all the features and amenities that homebuyers are looking for. 

Nevada Smarter Greener Better® Solar Water Heating Program for Builder

Rebate incentives to qualifying Nevada customers who install solar watgas back up. 

Nevada Smarter Greener Better® Solar Water Heating Program for Business 12/15/2014 Rebate incentives to qualifying Nevada customers who install solar wat

gas back up. 

Nevada Steamer - Business 12/31/2014 Enjoy shorter cooking times and higher production rates with these EN

Rebate up to $200. 

Nevada Tankless Water Heater – Single-Family and Multi-Family Individually-Metered 12/31/2014 Now is the perfect time to make Smarter Greener Better® choices for y

money with rebates on qualified energy-efficient products. 

Nevada Windows Rebate - Homeowner/Renter 12/31/2014 Whether you own or rent your residence, the Southwest Gas Nevada W

increase the energy efficiency of your home. 

NV Cooktops & Ranges - Special Offer - Homeowner/Renter 6/30/2014 Receive a FREE GE appliance with the purchase of a GE Monogram P

Cooktop Combo. See link or participating stores for details. 

NV Cooktops & Ranges - Special Offer - Homeowner/Renter 6/30/2014 Receive a free dishwasher, ventilation system, or instant savings on the 

appliances. See link or an authorized Dacor retailer for details. 

NV Cooktops & Ranges - Special Offer - Homeowner/Renter 9/30/2014 Receive a free dishwasher on the purchase of any 36" or 48" DCS U-SNV Cooktops & Ranges - Special Offer - Homeowner/Renter 12/15/2014 Receive a FREE dishwasher and ventilation hood with the purchase of NV Cooktops - Special Offer - Homeowner/Renter 9/30/2014 Receive a free dishwasher on the purchase of any DCS cooktop, wall oNV Natural Gas Clothes Dryer - Homeowner/Renter 12/31/2014 Get faster heat-up and shorter drying times with a natural gas dryer. Re

purchase of a gas dryer with a moisture sensor. 

NV Ranges - Special Offer - Homeowner/Renter 9/30/2014 Receive a free dishdrawer dishwasher on the purchase of a DCS frenc

U-Series range. See link for details. 

Smarter Greener Better® Solar Water Heating Program for Nevada - Homeowner/Renter

Southwest Gas is proud to offer a program providing rebate incentives who install solar water heating systems with a natural gas back-up. 
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4-9 

year early. These efforts, and others, have earned Caesars three Travelife Gold Certifications for 

commendable environmental sustainability practices. 

 
Clark County: Ozone Advance Program Path Forward 

5-1 

5. Local Mandatory Measures 

Air Quality Regulations 

In accordance with NRS Chapter 445B, the BCC has adopted the AQRs and delegated 

enforcement authority to DAQ. Emission sources within Clark County are required to comply 

with all existing rules and regulations through federally enforceable state implementation plan 

regulations.7

Clark County has an approved Prevention of Significant Deterioration (PSD) program, and most 

of the AQRs are EPA-approved. The BCC has adopted several regulatory updates and submitted 

them to EPA for incorporation in Nevada’s State Implementation Plan (SIP). Below is the 

complete list of AQRs, with section numbers on the left side. 

0 Definitions 

2 Procedures for Adoption and Revision of Regulations and for Inclusion of those 

Regulations in the State Implementation Plan 

4 Control Officer 

5 Interference with Control Officer 

6 Injunctive Relief 

7 Hearing Board and Hearing Officer 

8 Persons Liable for Penalties – Punishment: Defense 

9 Civil Penalties 

10 Compliance Schedules 

12.0 Applicability, General Requirements and Transition Procedures 

12.1 Permit Requirements For Minor Sources 

12.2 Permit Requirements For Major Sources In Attainment Areas (Prevention Of Significant 

Deterioration) 

12.3 Permit Requirements For Major Sources In Nonattainment Areas 

12.4 Authority To Construct Application And Permit Requirements For Part 70 Sources 

12.5 Part 70 Operating Permit Requirements 

12.6 Confidentiality 

12.7 Emission Reduction Credits 

12.9 Annual Emissions Inventory Requirement 

12.10 Continuous Monitoring Requirements for Stationary Sources 

12.11 General Permits for Minor Stationary Sources 

12.12 Transfer of Permit 

12.13 Posting of Permit 

13 National Emission Standards for Hazardous Air Pollutants 

14 New Source Performance Standards 

18 Permit and Technical Service Fees 

21 Acid Rain Permits 

22 Acid Rain Continuous Emission Monitoring 

 

7 Although not a SIP rule, DAQ administers the Part 70 (Title V) permit requirements through the implementation of Section 12.5 – 

Part 70 Operating Permit Requirements. 
Clark County: Ozone Advance Program Path Forward 

5-2 

25 Affirmative Defense for Excess Emissions Due to Malfunctions, Startup, and Shutdown 

26 Emission of Visible Air Contaminants 

27 Particulate Matter from Process Weight Rate 

28 Fuel Burning Equipment 

32 Reduction of Animal Matter 

33 Chlorine in Chemical Processes 

40 Prohibitions of Nuisance Conditions 

41 Fugitive Dust 

42 Open Burning 

43 Odors in the Ambient Air 

44 Prohibitions on Planting, Selling, or Offering to Sell Fruitless Mulberry and European 

Olive Trees 

45 Idling of Diesel Powered Motor Vehicles 

50 Storage of Petroleum Products 

51 Petroleum Product Loading into Tanks, Trucks And Trailers 

53 Oxygenated Gasoline Program 

70 Emergency Procedures 

80 Circumvention 

81 Provisions of Regulations Severable 

90 Fugitive Dust From Open Areas and Vacant Lots 

91 Fugitive Dust From Unpaved Roads, Unpaved Alleys, and Unpaved Easement Roads 

92 Fugitive Dust From Unpaved Parking Lots and Storage Areas 

93 Fugitive Dust From Paved Roads and Street Sweeping Equipment 

94 Permitting and Dust Control for Construction Activities 

Inspection and Maintenance Program 

Clark County implemented a basic inspection/maintenance (I/M) program in 1978, updated to an 

enhanced program in 1995. The current program is a decentralized hybrid program that includes 

both test-only and test and repair stations operated by independent contractors. 

NRS Chapter 445B (“Air Pollution”) establishes the authorities and requirements for regulating 

motor vehicle emissions in the state. In particular, NRS 445B.760 establishes the state’s 

authority to develop emission standards and NRS 445B.770 establishes the authority for counties 

to adopt regulations controlling vehicle emissions and to develop a program for vehicle 

inspection and testing. 

Emission testing is required of all passenger and light duty vehicles in the Las Vegas Valley (HA 

212) and within a five-mile buffer zone around it. The only exceptions are vehicles based in 

Goodsprings, a small town near the border of the buffer zone. The town of Jean is outside the 

buffer zone. 
Clark County: Ozone Advance Program Path Forward 

5-3 

Figure 5-1. Clark County Emissions Testing Area. 

Renewable Portfolio Standard 

The Nevada Legislature adopted the state RPS in 1997, and has modified it in every legislative 

session since. The RPS establishes the percentage of electricity sold by an electric utility to retail 

customers that must come from renewable sources. More specifically, electric utilities are 

required to generate, acquire, or save a certain percentage of electricity annually using portfolio 

energy systems or energy efficiency measures. 

The percentage of renewable energy required by the RPS will increase every two years until it 

reaches 25 percent in 2025. Included within that is a requirement that solar facilities generate at 

least five percent of the total renewable energy in the portfolio through 2015 and at least six 

percent beginning in 2016. In 2005, the Legislature determined that energy efficiency measures 

can be used to comply with up to 25 percent of the annual RPS requirement; however, half of 

that 25 percent must come from measures installed at residential customer service locations. 
Clark County: Ozone Advance Program Path Forward 

5-4 

Progress 

NV Energy installed 3,543 kW of solar electric equipment in southern Nevada in 2013, out of a 

state total of 5,365 kW. Equipment was installed in residences, small businesses, schools, and 

public-sector buildings. 

The state’s Office of Energy closely tracks renewable energy generation. In 2010, Nevada 

generated 3,034,160 MWh from renewables. The following year saw a 6 percent increase to 

3,217,758 MWh. In 2012, the last year for which data are available, Nevada generated 3,822,968 

MWh of renewable energy, an increase of 19 percent from the previous year. Projects scheduled 

for completion in 2014 will increase the total generated by renewables even more. 

The following projects are operational and online, some since 2007; others came online in 2013. 

As the list below demonstrates, Nevada has made substantial progress in generating renewable 

energy since the inception of the RPS. 

Apex Nevada Solar – 20.0 MW 

This solar PV project located 30 miles north of Las Vegas came on line in 2012. 

Las Vegas Valley Water District (6 projects) – 3.0 MW 

The Water District owns six Las Vegas-area solar PV projects totaling 3.0 MW. These 

installations began producing electricity in 2006.

Mountain View Solar – 20.0 MW 

Currently in the construction stage, this solar PV project near Apex being developed by the City 

of North Las Vegas is expected to be operational in 2014. 

Nellis Air Force Base Solar Star – 13.2 MW + 19 MW 

This solar PV project is one of the largest in the West. Operational in 2007, it can produce more 

than 13 MW of energy for Nellis Air Force Base. An additional 19 MW solar photovoltaic 

power system will be built at the base in 2015. 

Nevada Solar One – 69.0 MW 

This solar thermal plant is located in Eldorado Valley, near Boulder City. It came on line in 

2007. 

Searchlight Solar – 17.5 MW 

Still in the development stage, this solar PV project will be located near Searchlight. 

Silver State Solar – 52.0 MW 

Operational in 2012, this solar PV array near Primm was the first project built on public lands in 

Nevada. 

Spectrum Nevada Solar – 30.0 MW 

Operational in 2013, this solar PV project is located northeast of Las Vegas. 
Clark County: Ozone Advance Program Path Forward 

5-5 

CC Landfill Energy, LLC – 12.0 MW 

Located at Republic Services' Apex regional landfill, this project is Nevada’s largest landfill gasto-energy facility. It began producing energy in 2012. 

Goodsprings Energy Recovery Station – 7.5 MW 

This is the first Nevada power plant to capture waste heat from a natural-gas compression plant. 

Searchlight Wind Energy – 200 MW 

Located in Searchlight, NV, 60 miles southeast of Las Vegas, this wind energy project will have 

83 2.3 MW Siemens wind turbines. 

Moapa Solar Energy Center – 200MW 

The Moapa Solar Energy Center Project will involve the development of up to 1,000 acres of the 

Moapa reservation to produce approximately 200 MWs of solar energy. 

Midland Solar Project – 350MW 

A 350 MW solar plant will be built outside of Boulder City. This will be one of the largest 

renewable energy ventures in the country. 

Future Planned Projects 

The following projects are currently planned in Clark County. 

Table 5-1. Future RE Projects 

PLANT NAME COUNTY SUMMER 

CAPACITY PRIME MOVER 

ACTUAL OR 

PROPOSED 

ONLINE DATE 

Copper Mountain 2 Clark 58 MW Photovoltaic Dec. 2014 

Spectrum Solar Clark 30 MW Photovoltaic Sept. 2013 

Mountain View Solar Clark 8 MW Photovoltaic Feb. 2014 

Copper Mountain 3 Clark 250 MW Photovoltaic Dec. 2016 

K-Road Clark 250 MW Photovoltaic Dec. 2015 

Silver State Solar Power South Clark 250 MW Photovoltaic May 2017 

Table 5-2. New & Proposed Capacities 

ENERGY SOURCE 2012 2013 2014 2015 2016 2017 TOTAL 

Solar PV 173 MW 30 MW 66 MW 250 MW 250 MW 250 MW 1,019 MW 

Solar Thermal 110 MW 110 MW 

TOTAL 1,129 MW 
Clark County: Ozone Advance Program Path Forward 

5-6 

2013 Emission Reductions 

DAQ used EPA’s AVoided Emissions and geneRation Tool (AVERT) to calculate the emission 

reductions in 2013 due to renewable energy and energy efficiency programs. It started with the 

nine projects online at the beginning of 2013, which generated a total of 203 MW. Another 

project, Spectrum Solar (30 MW), came online in 2013, and an additional 5 MW were recovered 

through NV Energy’s Solar Electric Program.8

 All in all, renewable energy projects produced a 

total of 238 MW in 2013. Table 5-3 shows the corresponding input file for the AVERT model. 

Table 5-3. Inputs for AVERT Model 

Enter EE impacts based on the % reduction of regional fossil load. 

Reduce generation by a percent in some or all hours. 

Apply reduction to top X% hours: 0% % of top hours 

Reduction % in top X% of hours: 0.0% % reduction 

And/or enter EE impacts distributed evenly throughout the year. 

Reduce generation by annual GWh: 0 GWh 

OR 

Reduce each hour by constant MW. 0 MW 

And/or enter annual capacity of RE resources. 

Wind capacity: 0 MW 

Utility solar PV capacity: 238 MW 

Rooftop solar PV capacity: MW 

According to the model, renewable energy generation displaced 87,700 MWh . This equals a 

reduction of 31,400 lbs. (15.7 tpy) of NOx. During the 2013 ozone season, renewables displaced 

a total of 22,500 lbs. (11.25 tons) of NOx in Clark County (Table 5-4). 

Table 5-4. Model Outputs 

Peak Gross 

Generation, 

Post-EERE (MW) 

Annual Gross 

Generation, 

Post-EERE (MWh) 

Annual Displaced 

Generation 

 (MWh) 

Annual 

Displaced NOx

(lbs.) 

Ozone Season 

Displaced NOx

(lbs.) 

4,416 19,862,400 -87,700 -31,400 -22,500 

 

8 RenewableGenerations – December 2013. 
Clark County: Ozone Advance Program Path Forward 

5-7 

Figure 5-2. Monthly NOx Reductions. 

-6,000

-5,000

-4,000

-3,000

-2,000

-1,000

0

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

NOx (lbs)
Clark County: Ozone Advance Program Path Forward 

6-1 

6. Potential Voluntary Control Measures 

DAQ-Specific 

Earlier this year, the RTC asked if DAQ had any projects to include in the Transportation 

Improvement Program (TIP) for federal fiscal years 2015–2019. DAQ will participate in the TIP 

through projects funded by the Congestion Mitigation and Improvement Program (CMAQ). The 

three projects targeted for CMAQ funds are: 

Electric Vehicle Purchase 

DAQ will invest up to $300,000 in plug-in hybrid vehicles for the Clark County fleet, with the 

option to purchase electric charging stations. They will be available to county employees at the 

Government Center for business purposes and to Building Department employees for conducting 

inspections. Electric vehicles emit up to 80 percent fewer VOCs and 79 percent less NOx than 

conventional gas-fueled vehicles. 

Vacuum-Assist Stage II Disabling Assistance Program 

In May 2012, EPA determined that Stage II controls on gasoline stations are no longer necessary. 

DAQ will offer financial assistance to any gasoline station owner who wants to disable the assist 

system. A total of $500,000 is set aside for the program, and DAQ will reimburse owners up to 

80 percent of the cost. This program could reduce VOC emissions by 1.26 tpy per station. 

Vapor Processor Rebate Program 

This program supplements the Stage II Disabling Assistance Program. DAQ will offer financial 

assistance to any gasoline station owner to retrofit a pressure/vacuum relief valve with a device 

that reduces evaporative emissions while leaving the system intact. The potential cost of this 

retrofit is $40,000, so DAQ will use the $500,000 allocated to this program to reimburse owners 

50–80 percent of their costs. This program could reduce VOC emissions by 4.46 tpy per station. 

Other Entities 

Other agencies and private companies will continue to provide the incentive programs described 

in Section 4 to their customers. Everybody involved is continuously evaluating programs and 

seeking funding for more pollution-prevention and emission-reduction programs. Stakeholders 

will continue with their educational programs, and DAQ will continue to hold stakeholders 

meetings as appropriate. 
Clark County: Ozone Advance Program Path Forward 

7-1 

7. Future Mandatory Control Measures 

Federal Rules 

DAQ relies on new federal rules for on-road and non-road mobile sources to control NOx

emissions in Clark County. In early 2014, EPA finalized the Tier 3 Motor Vehicle Emission and 

Fuel Standards, which set new emissions standards and lower the sulfur content of gasoline. The 

standards will reduce tailpipe and evaporative emissions from passenger cars, light-duty trucks, 

medium-duty passenger vehicles, and some heavy-duty vehicles. According to EPA estimates, 

Tier 3 will reduce non-methane organic gases and NOx by approximately 80 percent compared to 

today’s fleet. The new standard will become effective in 2017. 

Reid Gardner Power Plant 

Nevada Senate Bill 123 (SB123) specifies the details for retiring the coal-fired boilers at the Reid 

Gardner power plant. The bill requires NV Energy to submit to the Nevada Public Utility 

Commission a comprehensive plan for reducing emissions from coal-fired plants and their 

replacements with increased capacity from renewable energy facilities and other electric plants. 

An amendment9 sets out the following actions: 

 Retire Reid Gardner 1, 2 & 3 (300 MW) by December 31, 2014. 

 Retire Reid Gardner 4 (257 MW) by December 31, 2017. 

 Replace Reid Gardner 1, 2, 3 and 4 with 500–550 MW of natural gas. 

 Build 150 MW of renewables, with construction to begin by December 2017 and finish 

by the end of 2021. 

Although SB123 allows retrofitting the coal-fired boilers to gas-fired boilers, that would still 

result in a significant reduction of NOx emissions. 

Project Neon 

NDOT has future plans to reengineer and rebuild the U.S. 95/I-15 interchange near downtown 

Las Vegas. Growing congestion (specifically on I-15) and freeway overcapacity contribute to 

high accident rates, noise pollution, and air pollution, especially along the Las Vegas resort 

corridor. Project NEON is designed to alleviate this congestion by providing alternatives to 

motorists who travel I-15 daily, which will also reduce emissions from NOx, one of the biggest 

ozone precursors. 

The project has six phases; the first has already started and is scheduled to be finished in 2016. It 

includes High-Occupancy Vehicle lanes between U.S. 95 and I-15, along with better connections 

to surface streets into the downtown area. Completion of all six phases is scheduled for 2019. 

 

9 NVision (proposed amendment to SB123), version 2, 4/11/13. 
Clark County: Ozone Advance Program Path Forward 

7-2 

Boulder City Bypass 

This project involves road improvements to U.S. Highway 93, a major regional commercial 

corridor and the single route through Boulder City. As a major urban arterial, Highway 93 carries 

32,000 vehicles per day of east-west traffic. 

Although Clark County is currently designated in attainment for ozone, there is concern that 

ozone levels are higher in Boulder City than in the Las Vegas Valley. If traffic congestion 

remains a problem on U.S. 93, ozone levels could rise even higher. Past sampling of ozone at the 

Boulder City monitoring station has indicated that ozone levels recorded there are often as high 

as the values recorded at monitoring stations in Las Vegas. One explanation could be a high 

production of NOx from vehicles traveling on U.S. 93, since vehicle emissions contribute 

significantly to NOx. High traffic volumes, especially in combination with idling vehicles, 

produce higher levels of NOx, which could led to higher ozone levels. 
Clark County: Ozone Advance Program Path Forward 

8-1 

8. Path Forward Implementation 

DAQ is proposing the following measures to proactively control ozone precursors. We are 

dedicated to investigating any new measures that might become available, and will implement 

them if they are economically and financially feasible. 

On-road and Non-road Mobile Emission Reductions 

According to data from the Nevada Department of Motor Vehicles, older cars and trucks are 

replaced with new, cleaner vehicles at a rate of about 4 percent a year. Over the next few years, 

this turnover will significantly reduce NOx emissions. DAQ also anticipates significant 

reductions when the Tier 3 program for onroad and nonroad engines and equipment becomes 

effective in 2017. 

DAQ does not have any jurisdiction to regulate engine emissions, so it has proactively promoted 

voluntary emission reduction programs and will continue to do so as long as federal funds are 

available to help. Availability of funding from several grant programs have already enabled our 

Clark County partners to effectively replace their fleets with more efficient vehicles, hybrids, 

and/or electric cars. 

Stage II Vapor Recovery and Control Systems 

In May 2012, EPA determined that onboard vapor recovery technology is used throughout motor 

vehicle fleets nationwide and waived the requirement to implement Stage II gasoline vapor and 

control systems at gasoline dispensing facilities in nonattainment areas. DAQ is currently 

reviewing this regulation, and is planning to phase out the installation of Stage II systems at gasdispensing facilities in Clark County. 

Congestion Mitigation and Air Quality Projects 

DAQ’s Electric Vehicle project has two phases. In the first phase, DAQ will obtain a Buy 

American Waiver. This phase is scheduled to start in October 2014, and DAQ plans to have the 

waiver by January 2015. In the second phase, DAQ will issue bids and purchase the vehicles. 

This phase is set to start in February 2015 and finish in September 2015. 

 

The first phase of the Vacuum-Assist Program, which involves development, marketing, and 

roll-out, is scheduled to begin in October 2015 and finish in September 2016. The second phase, 

implementation, will begin in October 2016 and finish in September 2017. 

The Vapor Processor Rebate program will start in October 2015 and last through September 

2018. This includes the program development and marketing phases, as well as the program 

implementation phases. 

 
Clark County: Ozone Advance Program Path Forward 

8-2 

DAQ Public Education and Outreach Program 

DAQ actively conducts local public outreach and education activities through targeted 

community interaction to promote clean air initiatives. Promoting individual and corporate 

behavior that reduces air pollution is an important role that is well suited to DAQ. DAQ 

promotes clean air initiatives by partnering with local schools and public/private organizations in 

the planning of public activities and events that provide public information (simple tips) and 

incentives to reduce ozone precursor emissions, e.g., Earth Day events. 

DAQ also maintains an EPA sponsored air quality messaging service (EnviroFlash) that the 

public can subscribe to via the DAQ webpage. EnviroFlash is designed to send emails about the 

daily air quality forecast in the Las Vegas Valley; information that the local radio or television 

stations provide, plus suggested safety measures when levels are unhealthy. Subscribing to 

EnviroFlash is important because exposure to high levels of air pollution can aggravate heart 

disease, asthma and other respiratory diseases, and by being aware of the “real time” air quality 

levels, individuals can take precautions to protect themselves and their families. 

Further, DAQ is in the process of developing materials to be used in outreach campaigns to 

promote air quality initiatives, as well as developing an annual calendar of recurring outreach 

venues and opportunities to better educate the public. 

Renewable Portfolio Standard 

Electric energy producers in Clark County and Nevada will continue to displace NOx and VOC 

emissions from traditional energy generating sources, such as coal-fired boilers, with clean 

renewable energy from solar, wind, and hydropower units. 

Conclusion 

Several factors out of DAQ’s control have a significant impact on ozone concentrations in Clark 

County. Taking into account that studies have shown significant ozone transport from different 

regions, and that background concentrations are close to 45 ppb, Clark County will have a hard 

time meeting the NAAQS. 

The ozone design value is close to the NAAQS, and NOx emissions increased by 12 percent 

between 2008 and 2011 because of an increase in on-road mobile sources. In 2012 and 2013, 

smoke from wildfires in nearby states affected Clark County’s ambient air significantly; in fact, 

most of the higher daily ozone concentrations were recorded during wildfire days. DAQ 

anticipates EPA concurrence with the exceptional event demonstrations it has submitted, which 

would exclude these higher wildfire-caused ozone concentrations for any regulatory purposes. 

Private companies and agencies at all levels of government provide Clark County residents with 

a variety of programs to reduce emissions. Future federal regulations for mobile sources, in 

conjunction with scheduled highway improvement projects, will further reduce NOx emissions in 

the county, as will the replacement of the Reid Gardner coal-fired boilers and further RPS 

requirements. 
Clark County: Ozone Advance Program Path Forward 

8-3 

DAQ has implemented many voluntary and mandatory control measures for NOx and VOC. 

Many organizations in Clark County, both government and private, are making great strides to 

reduce precursor emissions through various programs. Although few options remain that have 

not already been explored, DAQ will continue to research and evaluate any control measures that 

become available.