# Washoe County

, Nevada Air Quality Trends (200 2

- 201 1 )

May 24, 201 2

Washoe County Health District Air Quality Management Division

P.O. Box 11130
Reno, Nevada 89520

- 0027

(775) 784

- 7200 www.washoecounty.us/healthThi s page intentionally left blank.i 

## Table of Contents

I ntroduction

................................ ................................ ................................ ................................ ...... 1

Pollutants

................................ ................................ ................................ ................................ .......... 2
Particulate Matter (PM 10 and PM 2.5 )

................................ ................................ .................... 2
Ozone (O 3 )

................................ ................................ ................................ ........................... 2
Carbon Monoxide (CO)

................................ ................................ ................................ ....... 3 Nitrogen Dioxide (NO 2 )

................................ ................................ ................................ ....... 4
Sulfur Dioxide (SO 2 )

................................ ................................ ................................ ............ 5
Lead (Pb)

................................ ................................ ................................ .............................. 5 National Ambient Air Quality Standa rds

................................ ................................ ......................... 7 Ambient Air Monitoring Network

................................ ................................ ................................ ... 8 Currently Operating

................................ ................................ ................................ ........... 10
Reno 3 (RNO)

- AQS ID #32

- 031

- 0016 ( SLAMS /NCore/STN )

................................ ...... 10

South Reno (SRN)

- AQS ID #32

- 031

- 0020 ( SLAMS)

................................ .................... 10
Galletti (GAL)

- AQS ID #32

- 031

- 0022 ( SLAMS)

................................ .......................... 11

Toll (T OL)

- AQS ID # 32

- 031

- 0025 ( SLAMS)

................................ ............................... 11

Plumb

- Kit (PLM)

- AQS ID # 32

- 031

- 0030 ( SLAMS)

................................ ..................... 12 Sparks (SPK)

- AQS ID #32

- 031

- 1005 ( SLAMS)

................................ ............................ 12

Incline (INC)

- AQS ID #32

- 031

- 2002 ( SLAMS)

................................ ............................. 13 Lemmon Valley (LEM)

- AQS ID #32

- 031

- 2009 ( SLAMS)

................................ ............ 13 No Longer Oper ating

................................ ................................ ................................ ......... 14

Reno (RNO)

- AQS ID # 32

- 031

- 0016 (SLAMS/SPM )

................................ ..................... 14 Sun Valley (SUN)

- AQS ID #32

- 031

- 2006 ( SLAMS)

................................ ..................... 14 Mustang (MST)

- (SPM )

................................ ................................ ................................ .... 14

A Review of 2011

................................ ................................ ................................ .......................... 15

C urrent design Values and Attainment Status

................................ ................................ ............... 20

T en

- Y ear A ir Q uality T rend

................................ ................................ ................................ .......... 21

PM 10 (24

- hour)

................................ ................................ ................................ ................... 22

PM 2.5 (24

- hour)

................................ ................................ ................................ .................. 23

PM 2.5 (Annual)

................................ ................................ ................................ ................... 24

O 3 (8

- hour)

................................ ................................ ................................ ......................... 25
CO (8

- hour)

................................ ................................ ................................ ........................ 26
CO (1

- hour)

................................ ................................ ................................ ........................ 27

NO 2 (1

- hour)

................................ ................................ ................................ ...................... 28

NO 2 (Annual)

................................ ................................ ................................ ..................... 29

SO 2 (1

- hour, 24

- hour, and Annual)

................................ ................................ .................... 30

Tables

................................ ................................ ................................ ................................ ............. ii Figures

................................ ................................ ................................ ................................ ............. ii Appendices

................................ ................................ ................................ ................................ ...... ii Acronyms and Abbreviations

................................ ................................ ................................ ........ iiiii 

## Tables

1. National Ambient Air Quality Standards (as of December 31, 2011) .......................................7

2. 2011 Exceedances Summary ...................................................................................................16

3. Design Values and Attainment Status (as of December 31, 2011) ..........................................20



## Figures

1. State of Nevada ..........................................................................................................................1 2. Washoe County Ambient Air Monitoring Sites (2002-2011) ...................................................9

3. Reno 3 Monitoring Site ............................................................................................................10

4. South Reno Monitoring Site ....................................................................................................10

5. Galletti Monitoring Site ...........................................................................................................11

6. Toll Monitoring Site ................................................................................................................11

7. Plumb

- Kit Monitoring Site ......................................................................................................12 8. Sparks Monitoring Site ............................................................................................................12

9. Incline Monitoring Site ............................................................................................................13

10. Lemmon Valley Monitoring Site .............................................................................................13 11. Monthly AQI Summary for All Pollutants (2011) ...................................................................17 12. Monthly AQI Summary of PM 10 (2011) ..................................................................................18 13. Monthly AQI Summary of PM 2.5 (2011) .................................................................................18 14. Monthly AQI Summary of O 3 (2011) ......................................................................................19 15. Monthly AQI Summary of CO (2011).....................................................................................19

16. AQI Trend (2002-2011) ...........................................................................................................21

17. 24-hour PM 10 Concentrations (1 st Highs) ................................................................................22

18. 24-hour PM 2.5 Concentrations (3- year Average of 98 th Percentiles; 1 st Highs; and 98 th

Percentiles) ...............................................................................................................................23

19. Annual PM 2.5 Con centrations and Design Values ...................................................................24

20. 8-hour O 3 Concentrations (3- year Average of 4 th H ighs ) ........................................................25
21. 8-hour CO Concentrations (2 nd Highs) ....................................................................................26
22. 1-hour CO Concentrations (2 nd Highs) ....................................................................................27

23. 1-hour NO 2 Concentrations (1 st Highs, 98 th Percentiles, and 3 -Year Average of 98 th

Percentiles) ...............................................................................................................................28

24. Annual NO 2 Concentrations ....................................................................................................29

25. SO 2 Concentrations (1 st Highs, 99 th Percentiles) .....................................................................30



## Appendices

A. Detailed Summary of Three Most Recent Years of Dataiii 

## Acronyms and Abbreviations

AQI Air Quality Index
AQMD Washoe County Health District

- Air Quality Management Division
AQS Air Quality System

BAM Beta Attenuation Monitor

CARB California Air Resources Board

CFR Code of Federal Regulations

CO Carbon Monoxide

EPA U.S. Environmental Protection Agency

FEM Federal Equivalent Method

FRM Federal Reference Method

GAL Galletti

HA 87 Hydrographic Area 87

INC Incline

LEM Lemmon Valley

μ g/m 3 Micrograms per Cubic Meter mg/m 3 Milligrams per Cubic Meter
NAAQS National Ambient Air Quality Standards

NCore National Core M ulti

- P ollutant M onitoring S tation

NDEP Nevada Division of Environmental Protection

NO Nitric Acid

NO 2 Nitrogen Dioxide

NO

x Oxides of Nitrogen

NO y Reactive Oxides o f Nitrogen

O 3 Ozone

PLM Plumb

- Kit

PM Particulate Matter

PM 2.5 Particulate Matter less than or equal to 2.5 microns in aerodynamic diameter

PM 10 Particulate Matter less than or equal to 10 microns in aerodynamic diameter

PM

coarse PM 10 minus PM 2.5 ppb P arts per B illion

ppm P arts per M illion

RNO Reno

RTIA Reno

- Tahoe International Airport

SIP State Implementation Plan

SLAMS State and Local Air Monitoring Station

SO 2 Sulfur Dioxide

SO

x Oxides of Sulfur

SPK Sparks

SPM Special Purpose Monitoring

SRN South Reno

STN Speciation Trends Network

SUN Sun Valley

TOL Toll

USG Unhealthy for Sensitive Groups

VOC Volatile Organic CompoundsThis page intentionally left blank.Washoe County Health District- AQMD Air Quality Trends (2002-2011) 1 Figure 1

State of Nevada 

## Introduction

Washoe County is located in the northwest portion of Nevada and is bounded by California, Oregon, and the Nevada counties of Humboldt, Pershing, Storey, Churchill, Lyon, and Carson City (Figure 1). The majority of Washoe County’s population is concentrated in the southern portion of the county, especially in the Truckee Meadows. The Truckee Meadows is approximately 200 square miles in size and identified as Hydrographic Area 87 (HA 87) as defined by the State of Nevada Division of Water Resources.

The U.S. Environmental Protection Agency ( EPA ) has set health

and welfare based National Ambient A ir Q uality Standards
(NAAQS) for the following pollutants: particulate matter less than or equal to 10 microns (PM 10 ), particulate matter less than or equal
to 2.5 microns (PM 2.5 ), ozone (O 3 ), carbon monoxide (CO), nitrogen dioxide (NO 2 ), sulfur dioxide (SO 2 ), and lead (Pb). The mission of the Washoe County Health District - Air Quality Management Division ( AQMD ) Monitoring Program is “To monitor and assure the scientific accuracy of the ambient air quality

data collected for the determination o f compliance with the National Ambient Air Quality Standards (NAAQS) as defined by the EPA”. The AQMD has established a monitoring network throughout the Health District to collect ambient air data. The

network is reviewed annually to ensure it reflects the actual air quality of the county and that it is measuring for the pollutants of highest concern.

This document summarizes the ambient air data collected between 2002 and 2011 from the AQMD’s monitoring network. These data were submitted to the EPA’s Air Quality System (AQS), and are available for public review on EPA’s AIRDATA website. Long- term monitoring data can reveal trends in ambient air pollution and the subsequent need for control measures.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 2 

## Pollutants

The following describes the six criteria pollutants, their primary sources, and associated health

effects.

Particulate Matter (PM 10 and PM 2.5 )

Particulate matter, also known as particle pollution or PM, is a complex mixture of extremely small particles and liquid droplets. Particle po llution is made up of a number of components, including acids (such as nitrates and sulfates), organic chemicals, metals, and soil or dust particles.

The size of particles is directly linked to their potential for causing health problems. Of concern

are particles that are 10 micrometers in diameter or smaller because those are the particles that generally pass through the throat and nose and enter the lungs. Once inhaled, these particles can affect the heart and lungs and cause serious health effects. EPA groups particle pollution into two categories:

• " Inhalable coarse particles ” , such as those found near roadways and dusty industries, are

between 2.5 and 10 micrometers in diameter.

• “ Fine particles ” , such as those found in smoke and haze, are 2.5 micro meters in diameter

and smaller. These particles can be directly emitted from sources such as forest fires, or they can form when gases emitted from power plants, industries

, and automobiles react in

the air.

Particle pollution

, especially fine particle s

, contains microscopic solids or liquid droplets that are so small that they can get deep into the lungs and cause serious health problems. Numerous scientific studies have linked particle pollution exposure to a variety of problems, including:

increased respiratory symptoms, such as irritation of the airways, coughing, or difficulty breathing, for example; decreased lung function; aggravated asthma; development of chronic bronchitis; irregular heartbeat; nonfatal heart attacks; and premature death in peo ple with heart or lung disease.

People with heart or lung diseases, children and older adults are the most likely to be affected by particle pollution exposure. However, even healthy people may experience temporary symptoms from exposure to elevated lev els of particle pollution.

Ozone (O 3 )

Ozone is a gas composed of three oxygen atoms. It is not usually emitted directly into the air, but at ground

- level is created by a chemical reaction between oxides of nitrogen (NO

x ) and volatile organic compounds ( VOC) in the presence of sunlight. Ozone has the same chemical structure whether it occurs miles above the earth or at ground

- level and can be “ good ” or “ bad ”

, depending on its location in the atmosphere. “Good” ozone occurs naturally in the stratosphere approximately 10 to 30 miles above the earth and forms a layer that protects life on earth from the sun’s harmful rays.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 3 In the lower atmosphere, ground

- level ozone is considered “ bad ”

. Breathing ground

- level ozone can trigger a variety of health problems including chest pain, coughing, throat irritation, and congestion. It can worsen bronchitis, emphysema, and asthma. Ground

- level ozone also can reduce lung function and inflame the linings of the lungs. Repeated exposure may permanently scar lung tissu e. People with lung disease, children, older adults, and physically active people

may be affected when ozone levels are unhealthy. Numerous scientific studies have linked ground

- level ozone exposure to a variety of problems including: airway irritation, coughing, and pain when taking a deep breath; wheezing and breathing difficulties during exercise or outdoor activities; inflammation, which is much like a sunburn on the skin; aggravation of asthma and increased susceptibility to respiratory illnesses lik e pneumonia and bronchitis; and permanent lung damage with repeated exposures.

Motor vehicle exhaust and industrial emissions, gasoline vapors, and chemical solvents as well

as natural sources emit NO

x and VOC that help form ozone. Ground

- level ozone is the primary constituent of smog. Sunlight and hot weather cause ground

- level ozone to form in harmful concentrations. As a result, it is known as a summertime air pollutant. Many urban areas tend to have high levels of “bad” ozone, but even rural areas are also subject to increased ozone levels because wind carries ozone and pollutants that form it hundreds of miles away from their original sources.

Carbon Monoxide (CO)

Carbon monoxide is a colorless, odorless gas that is formed when carbon in fuel is not burned completely. It is a component of motor vehicle exhaust, which contributes about 56 percent of

all CO emissions nationwide. Other non

- road engines and vehicles (such as construction equipment and boats) contribute about 22 percent of CO emis sions nationwide. Higher

concentrations generally occur in areas with heavy traffic congestion. In cities, 85 to 95 percent of CO emissions may come from motor vehicle exhaust. Other sources include industrial
processes ( i.e., metals processing and chem ical manufacturing), residential wood burning, and natural sources such as forest fires. The highest ambient levels of CO typically occur during the colder months of the year when temperature inversion s are more frequent. The air pollution becomes trappe d near the ground beneath a layer of warm air

.

Carbon monoxide can cause harmful health effects by reducing oxygen delivery to the body ’ s organs ( i.e., heart and brain) and tissues. The health threat from lower levels of CO is most

serious for those who suffer from heart disease, like angina, clogged arteries, or congestive heart failure. For a person with heart disease, a single exposure to low levels of CO may cause chest pain and a reduce d ability to exercise . R epeated exposures may contribute to oth er cardiovascular effects. Even healthy people can be affected by high levels of CO. Exposure to high levels can result in vision problems, reduced ability to work or learn, reduced manual dexterity, and difficulty performing complex tasks. At extremely high levels, CO is poisonous

and can cause death.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 4 Nitrogen Dioxide (NO 2 )

Nitrogen dioxide is one of a group of highly reactive gasses known as “oxides of nitrogen ” , or “nitrogen oxides (NO

x ) ”. Other nitrogen oxides include nitrous acid and nitric aci d (NO) . While

EPA’s NAAQS covers this entire group of NO

x , NO 2 is the component of greatest interest and the indicator for the larger group of NO

x . NO 2 forms quickly from emissions from cars, trucks and buses, power plants, and off

- road equipment. In ad dition to contributing to the formation of ground

- level ozone and fine particle pollution, NO 2 is linked with a number of adverse effects on the respiratory system.

Current scientific evidence links short

- term NO 2 exposures, ranging from 30 minutes to 24 hours, with adverse respiratory effects including airway inflammation in healthy people and increased respiratory symptoms in people with asthma. Also, studies show a connection between breathing elevated short

- term NO 2 concentrations, and increased visi ts to emergency departments and hospital admissions for respiratory issues, especially asthma.

NO 2 concentrations in vehicles and near roadways are appreciably higher than those measured at

monitors in the current network. In fact, in

- vehicle concentrati ons can be 2 to 3 times higher than measured at nearby area

- wide monitors. Near

- roadway (within about 50 meters)

concentrations of NO 2 have been measured to be approximately 30 to 100 percent higher than concentrations away from roadways.

Individuals who spend time on or near major roadways can experience short

- term NO 2 exposures considerably higher than measured by the current network. Approximately 16 percent of US housing units (approximately 48 million people) are located within 300 f ee t of a major h ighway, railroad, or airport. This population likely includes a higher proportion of non

- white and economically

- disadvantaged people. NO 2 exposure concentrations near roadways are of particular concern for susceptible individuals, including people with a sthma asthmatics, children, and the elderly

.

NO

x react with ammonia, moisture, and other compounds to form small particles. These small particles penetrate deeply into sensitive parts of the lungs and can cause or worsen respiratory

disease, such as em physema and bronchitis, and can aggravate existing heart disease, leading to increased hospital admissions and premature death. Ozone is formed when NO

x and volatile organic compounds react in the presence of heat and sunlight. Children, the elderly, peo ple with lung diseases such as asthma, and people who work or exercise outside are at risk for adverse

effects from ozone. These include reduction in lung function and increased respiratory symptoms as well as respiratory

- related emergency department visi ts, hospital admissions, and possibly premature deaths.

Emissions that lead to the formation of NO 2 generally also lead to the formation of other NO

x . Emissions control measures leading to reductions in NO 2 can generally be expected to reduce population exposures to all gaseous NO

x . This may have the important co

- benefit of reducing

the formation of ozone and fine particles both of which pose significant public health threats.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 5 Sulfur Dioxide (SO 2 )

Sulfur dioxide is one of a group of highly reactive ga sses known as “ oxides of sulfur ” . The largest sources of SO 2 emissions are from fossil fuel combustion at power plants (66 percent)
and other industrial facilities (29 percent ). Smaller sources of SO 2 emissions include industrial processes such as extrac ting metal from ore, and the burning of high sulfur containing fuels by locomotives, large ships, and non

- road equipment. SO 2 is linked with a number of adverse effects on the respiratory system.

Current scientific evidence links short

- term exposures to SO 2 , ranging from 5 minutes to 24 hours, with an array of adverse respiratory affects including bronchoconstriction and increased asthma symptoms. These effects are particularly important for asthmatics at elevated ventilation
rates ( i.e. , while exercisin g or playing.)

. Studies also show a connection between short

- term exposure and increased visits to emergency departments and hospital admissions for respiratory illnesses, particularly in at

- risk populations including children, the elderly, and asthmatics

.

EPA’s SO 2 NAAQS is designed to protect against exposure to the entire group of sulfur oxides
(SO

x ). SO 2 is the component of greatest concern and is used as the indicator for the larger group

of SO

x . Other gaseous sulfur oxides ( i.e.

, SO 3 ) are found in the atmosphere at concentrations

much lower than SO 2

.

Emissions l ead ing to high concentrations of SO 2 generally also lead to the formation of other

SO

x . Control measures that reduce SO 2 can generally be expected to reduce people’s exposures to all gase ous SO

x . This may have the important co

- benefit of reducing the formation of fine sulfate particles, which pose significant public health threats.

SO

x can react with other compounds in the atmosphere to form small particles. These particles penetrate d eeply into sensitive parts of the lungs and can cause or worsen respiratory disease, such as emphysema and bronchitis, and can aggravate existing heart disease, leading to increased hospital admissions and premature death. EPA ’ s PM NAAQS are designed to p rovide protection against these health effects.

Lead (Pb)

Lead is a metal found naturally in the environment as well as in manufactured products. The major sources of lead emissions have historically been motor vehicles (such as cars and trucks)

and in dustrial sources. As a result of EPA’s efforts to remove lead from gasoline, ambient lead levels decreased 94 percent between 1980 and 1999. Today, the highest levels of Pb in air are usually found near lead smelters. Other stationary sources are waste incinerators, utilities, and

lead

- acid battery manufacturers.

I n addition to exposure to lead in air, other major exposure pathways include ingestion of lead in drinking water and lead

- contaminated food as well as incidental ingestion of lead

- contaminate d

soil and dust. Lead

- based paint remains a major exposure pathway in older homes.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 6 Once taken into the body, lead distributes throughout the body in the blood and is accumulated in

the bones. Depending on the level of exposure, lead can adversely affect the nervous system, kidney function, immune system, reproductive and developmental systems and the cardiovascular system. Lead exposure also affects the oxygen carrying capacity of the blood. The effects most commonly encountered in current populations are neurological effects in
children and cardiovascular effects ( i.e., high blood pressure and heart disease) in adults. Infants and young children are especially sensitive to even low levels of lead , which may contribute to behavioral problems, learning deficits

, and lowered IQ.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 7 

## National Ambient Air Quality Standards

The Clean Air Act requires the EPA to establish NAAQS for pollutants considered harmful to public health and the environment. Two types of NAAQS have been established; primary and

secondar y standards. Primary standards set limits to protect public health, especially that of sensitive populations such as asthmatics, children, and seniors. Secondary standards set limits to protect public welfare, including protections against decreased visi bility, damage to animals, crops, and building s

.

The EPA has set NAAQS for seven principal pollutants, which are called “criteria” pollutants. They are listed in Title 40 of the Code of Federal Regulations ( CFR ) Part 50 and summarized in

Table 1 below. The units of measure for the standards are parts per million (ppm) or billion (ppb) by volume, milligrams per cubic meter of air (mg/m 3 ), or micrograms per cubic meter of air (μg/m 3 ).

Table 1 National Ambient Air Quality Standards (as of December 31, 2011 )

Pollutant Primary Standard Secondary Standard

Averaging

Time Concentration Averaging

Time Concentration

PM 10 24

- hour 150 μ g/m 3 Same as primary

PM 2.5 24

- hour 35 μ g/m 3 Same as primary

Annual 15 μ g/m 3 Same as primary

O 3 8

- hour 0.075 ppm S ame as primary

CO 1

- hour 35 ppm None

8

- hour 9 ppm None

NO 2 Annual
(arithmetic mean) 0.053 ppm Same as primary

1

- hour 100 ppb None

SO 2 1

- hour 75 ppb None

3

- hour 0.5 ppm

Pb Rolling 3

- month

average 0.15 μ g/m 3 Same as primar y

Quarterly average

(until December
31, 2012) 1.5 μ g/m 3 Same as primaryWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 8 

## Ambient Air Monitoring Network

The AQMD began monitor ing ambient air quality in Washoe County in the 1970’s and the monitoring network has grown and evolved since this time. This trends report provides a summary of data collected from ambient air monitoring sites in Washoe County that the AQMD operated and mainta ined between 2002 and 2011 to measure PM 10 , PM 2.5 , O 3, CO, and NO 2

.

Each monitoring site is classified into one of two major categories

- SLAMS (State or Local Air Monitoring Station) and SPM (Special Purpose Monitoring). SLAMS consist of a network of monitoring stations whose size and distribution is largely determined by the monitoring requirements for NAAQS comparison. SLAMS in the AQMD’s network can be further

classified as NCore (National Core monitoring network ) or STN (Speciation Trends Network).

The AQMD’s monitoring stations are sited in accordance with 40 CFR 58 and utilize equipment designated as reference or equivalent methods

. 1 In addition, the network is reviewed annually 2

to ensure the network meets the monitoring objectives defined in 40 CFR 58, Appendix D.

A mbient air monitoring data are collected

, quality assured

, 3 and recorded in AQS. Figure 2 displ ays the ambient air monitoring sites operated between 200 2 and 20 11

. For specific details regarding the ambient air monitoring network, r efer to the AQMD’s “2011 Ambient Air Monitoring Network Plan” and “2010 Ambient Air Monitoring Network Assessment”.

1 40 CFR 53.

2 40 CFR 58.10.

3 40 CFR 58.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 9 F igure 2 Washoe County Ambient Air Monitoring Sites ( 200 2

- 20 11 )Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 10 Currently Operating

Reno 3 (RNO)
AQS ID 32

- 031

- 0016 (SLAMS/NCore/STN)

Located at 301 “A” State Street in downtown Reno,

this site began operation in January 2002 to replace the

Reno site. Both a residential neighborhood and a commercial growth area surround this site . As of
January 1, 2011 , Reno 3 became an NCore site. The pollutants measured are PM 10 , PM 2.5 , PM

coarse , O 3 , Trace CO, Trace SO 2 , NO

x , and Trace NO y . Meteorological paramet ers including ambient temperature, barometric pressure, relative humidity, wind speed, wind direction, and precipitation are also measured. This site is also part of EPA’s national Speciation Trends Network (STN). The monitoring objectives follow those s et forth by EPA for an Ncore

site.

South Reno (SRN)
AQS ID 32

- 031

- 0020 (SLAMS)

Located on the NV Energy property at 4110 Delucchi

Lane in Reno, this site is in a transitional environment between open f ields and office buildings. This site’s

monitor ing objective is population oriented for PM 10 , O 3 , and CO. Figure 3
Reno 3 Monitoring Site

Figure 4
South Reno Monitoring SiteWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 11 Galletti (GAL)
AQS ID 32

- 031

- 0022 (SLAMS)

Located at 305 Galletti Way in Reno, this site is

southeast of the Interstate 80

- US Highway 395 interchange in a comme rcial/industrial area. The

Galletti site, which monitors PM 10 and CO, is heavily impacted by on

- road vehicle emissions from interstate highways. The monitoring objective is to determine highest concentrations of PM 10 and is population

oriented for CO.

Toll (TOL)
AQS ID 32

- 031

- 0025 (SLAMS)

The Toll Road site is located at 684A State Route 341 (Geiger Grade), one

- half mile east of US Highway 395. The site is near the edge of a residential neighborhood and adjacent to an area that may become

c ommercially developed. It is a background site for

PM 10 and CO. This site also monitors typical

concentrations of O 3 . A nearby school bus depot is not believed to have impacted the site. Figure 5 Galletti Monitoring Site

Figure 6
Toll Monitoring SiteWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 12 Plumb

- Kit (PLM)
AQS ID 32

- 031

- 0030 (SLAMS)

Located at 891 East Plumb Lane in Reno, this site is on
the northeast corner of Plumb Lane and Kietzke Lane

. This site is surrounded by both residential and commercial properties as well as a school

. The only pollutant measured at this site is PM 10 . The monitoring objective is population oriented for PM 10

.

Sparks (SPK)
AQS ID 32

- 031

- 1005 (SLAMS/SPM)

L ocated on US Postal Service property at 750 Fourth

Street in Sparks, this site is surrounded by commercial

property, a residential neighborhood, and is adjacent to a school. In 2007, the Sparks site was moved approximately 55 meters north of its previous location, due to tree growth affecting siting criteria. The site has a population oriented monitoring objective for P M 10 and O 3 and determines highest concentrations of CO. In 2011, this site began special purpose monitoring
(SPM) for PM 2.5

. Figure 8 Sparks Monitoring Site Figure 7

Plumb

- Kit Monitoring Si teWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 13 I ncline (INC)
AQS ID 32

- 031

- 2002 (SLAMS)

Located at 855 Alde r Drive in Incline Village, this site

is outside HA 87. It is located in a residential/commercial neighborhood, where the monitoring objective is population oriented for O 3. The AQMD had monitored PM 10 (1993

- 2002) and CO
(1993

- 20 02). This site was tempo rarily closed from December 2005 to May 2008 for building remodeling. By multi

- agency cooperative agreement, the California
Air Resources Board (CARB) monitored PM 2.5 (1999

- 2002) and NO 2 (1999

- 2002). Since May 2008 this site only monitors for O 3

.

Lemmon Valley (LEM)
AQS ID 32

- 031

- 2009 (SLAMS)

Located at the Joe Mitchell Community Center at 325

Patrician Drive in Reno, this site is outside HA 87. It is in a transitional area among residences, parks, and open fields. The pollutants monitored are O 3 and CO. The monitoring objective is population oriented

. Figure 10 Lemmon Valley Monitoring Site Figure 9 Incline Monitoring SiteWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 14 No Longer Operating

Reno (RNO)
AQS ID 32

- 031

- 0016 (SLAMS/SPM )

This site was located in a downtown Reno commercial ar ea at 250 North Lake Street. In April 1995, it was relocated approximately 300 feet north to the southwest corner of Plaza Street and Evans Avenue. The pollutants measured were PM 10 , O 3 , and CO (SLAMS). In addition, special purpose monitoring (SPMS) for NO 2 began in 1996 and was reclassified as (SLAMS) in 2005.

PM 2.5 monitoring (SLAMS) began in 1999. The Reno site was displaced and shut down in January 2003 because of the ReTRAC (Reno Transportation Rail Access) Project.

Sun Valley (SUN)
AQS ID 32

- 031

- 2006 ( SLAMS )

This PM 10 site at 5399 Sun Valley Drive was located in a residential area outside HA 87. PM 10 monitoring continued until the site was shut down in March 2005.

Mustang (MST)
(SPM)

This remote site was located north of Interstate 80 near th e Mustang exit (Exit 23) in southeastern Washoe County and is no longer used. The Mustang site was operational from

1993 to 2002 and monitored PM 10 (1993

- 1998), O 3 (1993

- 2002), and CO (1995

- 1998).Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 15 

## A Review of 2011

The year started off with a six week dr y spell in January a nd the first half of February. During this time, air stagnation resulted in three out of the four highest 24

- hour PM 2.5 and PM 10 concentrations for the entire year

.

Well above normal precipitation occurred from mid

- February through la te March

. Although brief warm
spells occurred at times in April and May, s everal storm systems and cold front passages occurred during the month of May and early June producing cool and wet conditions, with additional

snow in the S ierra and the Lake Tahoe basin. D aytime temperatures were up to 25 degrees below normal during these events. By June 1, the snowpack in the Sierra was still between 220 a nd
260 percent of normal, and over 450 perce nt of normal in the Tahoe Basin. In lower elevations, fuels

whi ch usually cure in the late spring were too moist to support sustained burning several weeks later than

normal.

W armer and drier conditions returned to the region during the last two weeks of June

, when two

8

- hour ozone NAAQS exceedances occurred, on June 25 at 0.076 ppm and June 26 at 0.081

ppm. Seven large fires occurr ed in July. Most of the large fires burned during the second half of the month, some of which were ignited by lightning.

T hunderstorms were sparse in August, d ry conditions prevailed for most of the month of September

, and t wo precipitation events during the first ten days of October led to the conclusion of the peak fire season.

A fall season which produced sparse precipitation led to very dry fuels over western Nevada. Although the pe ak fire season had ended, the most destructive fire of the year occurred on

November 18. The “Caughlin” fire in southwest Reno began in the early morning in steep terrain and was driven by high wind gusts up to 70 mph which continued through the day,

spre ading the fire th rough a large residential area. The highest PM 10 concentration of the year
occurred on this day at 122 μ g/m 3 , due mainly to blowing dust and not wildfire smoke. 29 homes were destroyed with 8 additional homes damaged before this fire was contained two days

later at 1935 acres. Another large fire burned about 2500 acres in a remote area east of Spanish Springs on the 23rd, but no struct ures were damaged by this fire.

Extremely dry conditions continued through the remainder of 2011, with much of the region receiving no measurable rain or snow after Thanksgiving. There was no precipitation recorded during the month of December in Reno, tying the driest December on record since 1870. Strong temperature inversions and stagnant air condition s led to a December with six days in the “Unhealthy for Sensitive Groups” AQI range, and our highest 24

- hour PM 2.5 concentration
occurring on December 26 at 30.5 μ g/m 3

.

Table 2 summarizes NAAQS exceedances in 2011 by pollutant, averaging period, and dates

.Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 16 Table 2

2011 Exceedances Summary

Pollutant Averaging

Period Exceedance Dates

PM 10 24

- hour N one

PM 2.5 24

- hour None

O 3 8

- hour June 25 and 26

CO 1

- hour N one

8

- hour N one

NO 2 1

- hour N one

SO 2 1

- hour None

3

- hour None

3 h

Pb Q uarterly Not required to monitor based on population size and lack of significant Pb

sources. Rolling

3

- monthWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 17 Figure 11 summarizes the 2011 air quality by month and Air Quality Index (AQI) categories.
The AQI is an index for reporting daily ai r quality that has been established by EPA which informs the public how clean or polluted the air is, and what associated health effects might be a

concern

. The AQI is reported to the public via an email list and the AQMD ’ s air quality hotline
((775) 785

- 4110) . The email and hotline are updated daily , and more often during air pollution episodes. PM, CO, NO 2 , and SO 2 concentrations are typically higher in the winter months while higher O 3 concentrations are more typ ical during the summer months.

T he AQM D operates two types of monitors for PM 10 and PM 2.5 - Beta Attenuation Monitors
(BAMs) and filter

- based monitors. BAMs collect PM data on an hourly basis 24 hours per day, 365 days per year

. Filter

- based PM monitors operate on a 1 in 3, or 1 in 6 day sam pling

schedule . These sampling schedules provide approximately 122 (1 in 3) or 61 (1 in 6) samples

per year

. EPA provides design value calculation guidance which makes “less than daily sampling” data statistically equivalent to daily methods. Because of the se difference s in PM monitoring frequency for AQI and NAAQS compliance purposes, the totals in Table 2 may not

be consist ent with the data in Figures 11

- 15

.

Figure 11 Monthly AQI Summary for All Pollutant s (201 1 )

* Unhealthy for Sensitive Groups

The next four figures are pollutant specific and summarize Washoe County’s air quality for the previous year by polluta nt, month, and AQI categories. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Good 15 21 31 29 25 16 26 20 28 26 10 7

Moderate 15 7

- 1 6 12 5 11 2 5 20 18

USG* 1

- - - - 2

- - - - - 6

Unhealthy

- - - - - - - - - - - - Very Unhealthy

- - - - - - - - - - - -

Hazardous

- - - - - - - - - - - - 0 5 10 15 20 25 30 35Days per MonthWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 18 Figure 12 Monthly AQI Summary of PM 10 (2011 )

Figure 13 Monthly AQI Summary of PM 2.5 (2011 )

* Unhe althy for Sensitive Groups

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

Good 17 21 31 30 31 30 31 31 30 31 25 16

Moderate 14 7

- - - - - - - - 5 15

USG*

- - - - - - - - - - - - Unhealthy

- - - - - - - - - - - - Very Unhealthy

- - - - - - - - - - - -

Hazardous

- - - - - - - - - - - - 0 5 10 15 20 25 30 35Days per Month

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

Good 15 25 31 29 31 30 30 31 28 26 10 7

Moderate 15 3

- 1

- - 1

- 2 5 20 18

USG* 1

- - - - - - - - - - 6

Unhealthy

- - - - - - - - - - - - Very Unhealthy

- - - - - - - - - - - -

Hazardous

- - - - - - - - - - - - 0 5 10 15 20 25 30 35Days per MonthWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 19 Figure 14 Monthly AQI Summary of O 3 (2011 )

Figure 15 Monthly AQI Summary of CO (2011 )

* Unhealthy for Sensitive Groups

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

Good 31 28 31 29 25 16 26 20 29 31 30 31

Moderate

- - - 1 6 12 5 11 1

- - -

USG*

- - - - - 2

- - - - - - Unhealthy

- - - - - - - - - - - - Very Unhealthy

- - - - - - - - - - - -

Hazardous

- - - - - - - - - - - - 0 5 10 15 20 25 30 35Days per Month

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

Good 31 28 31 30 31 30 31 31 30 31 30 31

Moderate

- - - - - - - - - - - -

USG*

- - - - - - - - - - - - Unhealthy

- - - - - - - - - - - - Very Unhealthy

- - - - - - - - - - - -

Hazardous

- - - - - - - - - - - - 0 5 10 15 20 25 30 35Days per MonthWashoe County Health District- AQMD Air Quality Trends (2002-2011) 20 

## Current Design Values and Attainment Status

Table 3 summarizes Washoe County’s current design values and designations for each NAAQS. The designations are also codified in 40 CFR 81.329.

Table 3 Design Values and Attainment Status (as of December 31, 2011)

NAAQS

Pollutant Averaging

Time Level Design Value Designation (Geographic Area)

PM 10 24-hour 150 μ g/m 3 0.0 (Expected
Exceedances) “Serious” Non

- Attainment (HA
87)
Unclassifiable (Remainder of
County)

PM 2.5 24-hour 35 μ g/m 3 25.9 μ g/m 3 Attainment (HA 87)

Unclassifiable / Attainment (Remainder of County)

Annual 15.0 μ g/m 3 6.9 μ g/m 3 Att ainment (HA 87)

Unclassifiable / Attainment (Remainder of County)

O 3 8-hour 0.075 ppm 0.066 ppm Unclassifiable / Attainment (Entire County)

CO 1-hour 35 ppm 3.4 ppm Attainment (HA 87)

Unclassifiable/ Attainment

(Remainder of County)

8-hour 9 ppm 2.6 ppm Attainment (HA 87)

Unclassifiable / Attainment (Remainder of County)

NO 2 Annual
(arithmetic
mean) 0.053 ppm 0.017 ppm Attainment (Entire County)

1-hour 100 ppb 60 ppb Unclassifiable / Attainment (Entire County)

SO 2 1-hour 75 ppb 6 ppb n/a (Entire County) Promulgated in 2010.

Pb Rolling 3

- month average 0.15 μ g/m 3 n/a

Unclassifiable / Attainment (Entire County) Quarterly
Average (until

December 31,
2012) 1.5 μ g/m 3 n/aWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 21 

## Ten

- Year Air Quality Trend

Figure 11 summarizes the ten

- year trend in AQI between 2002 and 2011 . NAAQS revisions in 2006 and 2008 resulted in changes to AQI category ranges and the number of days per year within those ranges.

Figure 16
AQI Trend (2002

- 2011 )

* Unhealthy for Sens itive Groups

Notes

2006 : 1

- hour O 3 NAAQS rescinded . Reporting of AQI for 1

- hour O 3 discontinued in

June. Reporting of AQI for 8

- hour O 3 began in June.

24

- hour PM 2.5 NAAQS lowered from 65 to 35  g/m 3

. 2007: Reporting of AQI for PM 2.5 began in July.

2008: 8

- hour O 3 NAAQS lowered from 0.08 to 0.075 pp m

. 2010: No AQI for PM 2.5 from Oct 21 to Dec 31.

The next subsection provides one

- page summar ies of the ten

- year tren d for each pollutant

monitored. The summar ies also provide information about the latest year including exceedances,

maximum concentrations

, and design values. 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Good 238 245 244 250 307 308 237 263 258 254

Moderate 127 120 122 113 58 57 108 92 104 102

USG*

- - - 2

- - 11 8 3 9

Unhealthy

- - - - - - 9 2

- - Very Unhealthy

- - - - - - 1

- - -

Hazardous

- - - - - - - - - - 0 50 100 150 200 250 300 350Days per YearWashoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 22 PM 10 (24

- hour)

NAAQS Level : 150 μ g/m 3

Current Designation : “Serious” Non

- Attainment (HA 87); Unclassifiable (Remainder of County)

2011 Exceedances : 0

2011 Expected Exceedances : 0.0

2011 First High : 122 μ g/m 3 ( Nov 18

- TOL )

2011 Design Value : 0.0 expected exceedances

Notes : In 2006, EPA revoked the annual NAAQS of 50 μ g/m 3 (71 FR 61144). In July 2 009, a

revision to the PM 10 State Implementation Plan (SIP) was submitted to EPA Region IX requesting redesignation of H A 87 to Attainment/Maintenance of the 24

- hour NAAQS. On April 19, 2011, EPA published a final rule (76 FR 21807 ) finding that the:1) Tr uckee Meadows failed to attain the NAAQS by the applicable date; and 2) the Truckee Meadows is currently attaining the NAAQS based on recent monitoring data (2007

- 2009). The rule does not change

the “Serious” non

- attainment designation. In 2010, 1 in 3 d ay sampling began at the Reno3 site.

The remainder of the PM 10 network operates on a 1 in 6 day sampling schedule.

Figure 17

24

- h ou r PM 10 Concentrations (1 st Highs)

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 150 150 150 150 150 150 150 150 150 150

0016 (RNO) 66 69 83 79 91 69 92 78 142 64

0020 (SRN) 45 61 54 71 58 75 111 59 52 64

0022 (GAL) 97 108 126 173 118 130 87 91 87 114

0025 (TOL) 57 64 64 75 47 43 64 46 34 122

0030 (PLM) 91 108 86 93 77 72

1005 (SPK) 73 85 90 72 76 76 101 67 55 77

2002 (INC) 64

2006 (SUN) 81 100 74 82 NAAQS

0 20 40 60 80 100 120 140 160 180 200Concentration (μg/m3)Washoe County Health District- AQMD Air Quality Trends (2002-2011) 23 PM 2.5 (24 -hour)

NAAQS Level : 35 μ g/m 3

Current Designation : Attainment (HA 87), and U nclassifiable/ Attainment (Remainder of
County)

2011 Exceedances : 0

2011 First High : 30.5 μ g/m 3 ( Dec 26

- RNO)

2011 98 th Percentile : 20.8 μ g/m 3 ( Jan 6 - RNO )

2011 Design Value : 25.9 μ g/m 3

Notes : PM 2.5 was monitored at one site ( RNO ) during this period. In 2006, EPA revised and

lowered the NAAQS from 65 to 35 μ g/m 3 (71 FR 61144). Ambient air monitoring data from June/July 2008 were influenced by wildfires in Northern California. An exceptional events

request was submitted to EPA Region IX in October 2009. As of May 1 0 , 2011 , EPA has not

taken action on the request and is not anticipated to do so. The design values will include these

data unless EPA determines concurrence with the request.

Figure 18

24-hou r PM 2.5 Concentrations (3- yea r Average of 98 th Per centile s ; 1 st Highs;

and 98 th Percentiles)

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 65 65 65 65 35 35 35 35 35 35

0016 (RNO) 33.0 29.0 24.7 29.6 32.2 30.6 34.9 39.4 36.8 25.9

1st High 32.1 22.5 29.8 63.5 28.7 26.9 114.7 52.6 38.8 30.5

98th %tile 25.8 19.4 28.8 40.7 27.0 24.0 53.6 40.5 16.3 20.8 NAAQS (1997)

NAAQS (2006)

0 30 60 90 120 150Concentration (μg/m3)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 24 PM 2.5 ( Annual )

NAAQS Level : 15 μ g/m 3

Current Designation : Attainment (HA 87), and Unclassifiable/ Attainment (Remainder of

C ounty)

2011 Annual Average : 6.7 μ g/m 3

2011 Design Value : 6.9 μ g/m 3

Notes : PM 2.5 was monitored at one site (RNO) during this period. In 2006, EPA revi ewed and

retai ned the annual NAAQS of 15 μ g/m 3 (71 FR 61144). Ambient air monitoring data from June/July 2008 were influenced by wildfires in Northern California. An exceptional events request was submitted to EPA Region IX in October 2009. As of May 1 0 , 2011, EPA ha s not taken action on the request and is not anticipated to do so. The design values will include these data unless EPA determines concurrence with the request.

Figure 19

Annual PM 2.5 Concentrations and Design Values

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Annual Ave. 9.1 7.3 8.1 9.0 7.6 8.6 10.1 7.9 6.0 6.7

NAAQS 15 15 15 15 15 15 15 15 15 15

Design Value 9.4 8.9 8.2 8.1 8.2 8.2 8.6 8.7 8.1 6.9 NAAQS

0 5 10 15 20 25 30 35Concentration (μg/m3)Washoe County Health District- AQMD Air Quality Trends (2002-2011) 25 O 3 (8 -hour)

NAAQS Level : 0.075 ppm Current Designation : Unclassifiable/ Attainment (Entire County)

2011 Exceedances : 2 (June 25 and 26 - SPK )

2011 First High : 0.081 ppm (June 26- SPK ) 2011 Fourth High : 0.067 ppm (June 9 - SPK )

2011 Design Value : 0.066 ppm

Notes : The NAAQS was revised and lowered in 2008 from 0.08 to 0.075 ppm (73 FR 16436). Ambient air monitoring data from June/July 2008 were influenced by wildfires in Northern California. An exceptional events request was submitted to EPA Region IX in October 2009.

As o f May 1 0, 2011, EPA has not taken action on the request and is not anticipated to do so. The design values will include these data unless EPA determines concurrence with the request.

Figure 20

8-hour O 3 Concentrations (3-y ea r Average of 4 th Highs )

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 0.08 0.08 0.08 0.08 0.08 0.08 0.075 0.075 0.075 0.075

0016 (REN) 0.069 0.069 0.073 0.071 0.070 0.070 0.073 0.070 0.069 0.064

0020 (SRN) 0.072 0.072 0.074 0.072 0.070 0.071 0.071 0.067 0.065 0.065

0025 (TOL) 0.070 0.069 0.070 0.069 0.068 0.065 0.069 0.068 0.070 0.066

1005 (SPK) 0.072 0.072 0.074 0.071 0.070 0.071 0.073 0.070 0.069 0.066

2002 (INC) 0.067 0.068 0.067 0.065 0.072 0.067 0.065 0.061

2009 (LEM) 0.066 0.064 0.063 0.064 0.067 0.070 0.074 0.072 0.070 0.066 NAAQS (1997)

NAAQS (2008)

0.055 0.060 0.065 0.070 0.075 0.080 0.085Concentration (ppm)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 26 C O (8

- hour)

NAAQS Level : 9 ppm Current Designation : Attainment (HA 87), and Unclassifiable /Attainment (Remainder of

C ounty)

2011 Exceedances : 0

2011 First High : 3.3 ppm ( Dec 19

- SPK )

2011 Second High : 2.6 ppm ( D ec 11

- SPK )

2011 Design Value : 2.6 ppm

Notes : The l as t measured exceedance of the 8

- hour NAAQS occurred in December 1991.

Figure 21

8

- hour CO Concentrations (2 nd High s )

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 9 9 9 9 9 9 9 9 9 9

0016 (RNO) 4.0 2.6 2.5 2.9 2.6 2.2 1.6 2.1 1.8 1.4

0020 (SRN) 2.1 2.4 2.0 2.1 1.9 1.8 1.3 1.5 1.4 1.0

0022 (GAL) 4.4 3.6 3.9 3.2 3.2 3.3 2.4 2.3 1.9 1.9

0025 (TOL) 1.1 1.2 1.1 1.8 1.4 1.2 0.9 1.4 0.9 0.8

1005 (SPK) 4.4 3.8 3.9 3.2 3.0 3.1 2.8 2.9 2.6 2.6

2002 (INC) 1.4

2009 (LEM) 2.3 1.9 2.1 1.8 1.9 1.8 1.5 1.5 1.3 1.4 NAAQS

0 1 2 3 4 5 6 7 8 9 10Concentration (ppm)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 27 CO ( 1

- hour )

NAAQS Level : 35 ppm Current Designation : Attainment (HA 87), and Unclassifiable/ Attainment (Remainder of

C ounty)

2011 Exce edances : 0

2011 First High : 3.5 ppm ( Dec 18

- SPK )

2011 Second High : 3.4 ppm ( Dec 19

- SPK )

2011 Design Value : 3.4 ppm

Notes : The AQMD has never measured an exceedance of the 1

- hour NAAQS.

Figure 22

1

- hour CO Concentrations (2 nd High s )

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 35 35 35 35 35 35 35 35 35 35

0016 (RNO) 6.4 4.8 3.7 4.0 3.5 3.5 2.5 2.9 2.6 2.1

0020 (SRN) 3.1 3.1 3.1 2.5 2.5 2.2 1.7 1.9 1.9 1.5

0022 (GAL) 6.9 6.1 5.3 4.0 4.8 4.1 3.4 3.0 2.7 2.7

0025 (TOL) 1.9 1.8 1.6 1.9 2.2 1.9 1.7 1.6 1.2 1.4

1005 (SPK) 6.7 6.1 5.8 4.4 4.5 4.7 3.8 4.2 3.1 3.4

2002 (INC) 2.0

2009 (LEM) 4.5 3.7 3.2 2.7 3.4 3.3 1.9 2.6 1.8 2.0 NAAQS

0 5 10 15 20 25 30 35 40Concentration (ppm)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 28 NO 2 (1

- hour)

N AAQS Level : 100 ppb (Promulgated in 2010)

Current Designation : Unclassifiable/Attainment (Entire County)

2011 Exceedances : 0

2011 First High : 71.1 ppb ( Dec 28

- RNO)

2011 98 th Percentile : 58 .0 ppb ( Dec 21

- RNO)

2011 Design Value : 60 ppb

Notes : NO 2 was mon itored at one site (RNO) during this period. In 2010, EPA established a

new 1

- hour NAAQS of 100 ppb (75 FR 6474)

.

Figure 23

1

- h ou r NO 2 Concentrations (1 st Highs , 98 th Percentile s , and 3

- Year Average of 98 th Percentiles)

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 100 100

1st High 117 80 82 125 93 72 75 96 81 71

98th %tile 50 55 58

0016 (RNO) 62 59 60 NAAQS

0 20 40 60 80 100 120 140 160 180 200Concentration (ppb)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 29 NO 2 ( Annual )

NAAQS Level : 0.0 53 ppm Current Designation : Attainment

2011 Annual Average : 0.017 ppm

2011 Design Value : 0.017 ppm

Notes : NO 2 was monitored at one site (RNO) during this period. In 2010, EPA reviewed and

retain ed the annual NAAQS of 0.053 ppm (75 FR 6474).

Figure 24

Ann ual NO 2 Concentrations

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

0016 (RNO) 0.023 0.028 0.021 0.021 0.020 0.019 0.018 0.017 0.016 0.017

NAAQS 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 NAAQS

0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090 0.100Concentration (ppm)Washoe County Health District

- AQMD Air Quality Trends (2002

- 2011) 30 SO 2 (1

- hour , 24

- hour, and Annual )

NAAQS Level (1

- hour) : 75 ppb (Promulgated in 2010)
NAAQS Level (24

- hour) : 0.14 ppm (Revoked in 2010)
NAAQS Level (Annual) : 0.03 ppm (Revoked in 2010) Current Designation s : 1

- hour (Promulgated in 2010)

- See Notes; 24

- hour (Revoked in 2010)

- Attainment; Annual (Revoked in 2010)

– Attainment

2011 First High : 7.6 ppb (Jan 28

– RNO) 2011 Design Value : 6 ppb

Notes : In 2010, EPA established a new 1

- hour NAAQS of 75 ppb (75 FR 35520). In that same

rul e, EPA revoked the 24

- hour and annual NAAQS. SO 2 monitoring began at the R NO site on
January 1, 201 1

. On May 3, 2011, the Nevada Division of Environmental Protection submitted an initial recommendation of “Unclassifiable” for all hydrographic areas in the State of Nevada

for the 1

- hour SO 2 NAAQS to EPA Region IX.

Figure 2 5

1

- hour S O 2 Concentrations (1 st Highs, 99 th Percentiles)

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

NAAQS 75 75

1st High 5.6

0016 (RNO) 6 NAAQS

0 25 50 75 100 125 150Concentration (ppb)

## Appendix A

Detailed Summary of Three Most Recent Years of Data

## Washoe County

Ambient Air Monitoring Data

(2011)11-1 Pollutant Averaging Period Exceedance Dates

PM 10 24-hour None

PM 2.5 24-hour None

O 3 8-hour June 25 and 26

1-hour None

8-hour None

NO 2 1-hour None

SO 2 1-hour None

3-month

quarterly Pb n/a - Pb was not monitored in 2011 

## Exceedances (2011)

CO11-2 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.8 1.8 28/07 1.8 29/09 1.7 8/07 1.6 22/00

FEB 0.6 1.9 5/06 1.5 4/03 1.4 11/09 1.3 7/08

MAR 0.3 1.0 1/06 0.8 2/00 0.7 17/09 0.7 4/06

APR 0.2 0.5 27/10 0.5 15/08 0.4 6/08 0.4 1/07

MAY 0.3 0.6 6/08 0.6 12/07 0.6 5/08 0.6 11/07

JUN 0.3 0.6 23/08 0.5 22/10 0.5 24/06 0.5 21/21

JUL 0.3 0.5 25/08 0.5 1/22 0.5 5/12 0.5 3/02

AUG 0.3 0.7 5/05 0.5 31/09 0.5 14/05 0.5 13/08

SEP 0.3 0.8 28/06 0.8 19/10 0.7 21/11 0.7 27/22

OCT 0.5 1.4 29/05 1.3 31/09 1.2 24/10 1.1 15/04

NOV 0.5 1.6 28/11 1.5 30/03 1.4 29/10 1.3 15/08

DEC 0.8 1.9 11/07 1.9 26/08 1.8 19/01 1.7 21/09

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.4 1.9 FEB 5/06 1.9 DEC 11/07 1.9 DEC 26/08 1.8 JAN 28/07

* Hour Beginning 

## 2011 ANNUAL SUMMARY CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

Galletti11-3 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.4 1.0 15/01 1.0 8/05 0.9 4/02 0.9 25/02

FEB 0.3 0.8 4/02 0.8 11/07 0.8 5/02 0.7 10/08

MAR 0.2 0.6 1/06 0.5 4/07 0.5 2/00 0.4 9/07

APR 0.2 0.5 1/07 0.4 4/07 0.3 27/09 0.3 6/07

MAY 0.3 0.5 11/05 0.4 30/05 0.4 1/04 0.4 2/07

JUN 0.3 0.4 3/06 0.4 17/05 0.4 9/08 0.4 10/04

JUL 0.3 0.4 27/06 0.4 29/11 0.4 2/01 0.4 22/06

AUG 0.3 0.4 16/08 0.4 29/10 0.4 26/08 0.4 9/11

SEP 0.3 0.5 10/03 0.5 29/10 0.5 3/04 0.5 23/08

OCT 0.4 0.8 28/06 0.8 29/02 0.8 31/07 0.7 27/07

NOV 0.5 1.2 11/02 1.0 9/08 1.0 10/08 1.0 8/09

DEC 0.7 1.4 11/01 1.4 24/01 1.3 25/02 1.3 14/08

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.3 1.4 DEC 11/01 1.4 DEC 24/01 1.3 DEC 25/02 1.3 DEC 14/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

Lemmon Valley11-4 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.548 1.373 8/10 1.289 13/11 1.222 28/12 1.197 12/23

FEB 0.379 1.108 5/08 0.952 28/00 0.857 7/11 0.810 13/08

MAR 0.246 0.618 1/04 0.563 29/10 0.532 17/09 0.519 13/10

APR 0.209 0.737 15/08 0.443 14/11 0.406 6/09 0.381 11/11

MAY 0.197 0.367 7/05 0.366 4/06 0.358 5/11 0.345 6/08

JUN 0.165 0.269 9/12 0.222 7/05 0.217 16/23 0.216 24/22

JUL 0.161 0.308 18/07 0.301 31/06 0.262 30/07 0.260 19/10

AUG 0.178 0.387 14/00 0.332 31/10 0.309 12/23 0.272 11/22

SEP 0.217 0.589 25/04 0.453 30/23 0.393 24/12 0.389 26/21

OCT 0.264 0.781 15/03 0.643 24/11 0.618 13/12 0.581 31/11

NOV 0.383 1.234 22/11 1.098 28/00 0.950 17/01 0.853 15/09

DEC 0.589 1.634 27/00 1.277 20/02 1.236 17/02 1.203 28/10

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.295 1.634 DEC 27/00 1.373 JAN 8/10 1.289 JAN 13/11 1.277 DEC 20/02

* Hour Beginning 

## 2011 ANNUAL SUMMARY TRACE CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

Reno 311-5 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.3 1.1 13/09 0.9 8/00 0.9 12/10 0.7 22/10

FEB 0.2 0.5 3/10 0.5 4/10 0.4 5/00 0.4 7/10

MAR 0.1 0.4 31/08 0.4 9/10 0.4 17/09 0.3 1/09

APR 0.1 0.2 1/00 0.2 15/08 0.2 4/08 0.2 6/07

MAY 0.1 0.2 3/07 0.2 6/08 0.2 2/07 0.2 12/08

JUN 0.1 0.2 9/10 0.2 7/07 0.2 27/09 0.1 10/07

JUL 0.1 0.2 29/08 0.1 26/08 0.1 28/10 0.1 6/08

AUG 0.1 0.3 10/07 0.2 27/08 0.2 31/08 0.2 5/07

SEP 0.1 0.3 10/02 0.3 29/12 0.3 25/09 0.2 19/11

OCT 0.2 0.4 5/17 0.4 24/10 0.4 27/09 0.4 21/10

NOV 0.3 0.7 22/10 0.7 28/10 0.7 28/02 0.6 17/01

DEC 0.4 1.0 27/23 0.9 26/05 0.8 28/08 0.8 23/23

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.1 1.1 JAN 13/09 1.0 DEC 27/23 0.9 JAN 8/00 0.9 DEC 26/05

* Hour Beginning 

## 2011 ANNUAL SUMMARY CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

South Reno11-6 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.8 2.1 15/02 1.9 16/00 1.7 22/01 1.6 28/09

FEB 0.6 2.0 5/02 1.7 1/03 1.6 7/02 1.6 11/08

MAR 0.4 1.2 1/09 1.1 4/07 1.0 2/01 0.9 13/03

APR 0.3 0.8 1/07 0.7 6/07 0.7 12/08 0.6 4/08

MAY 0.3 0.7 1/05 0.6 11/07 0.6 5/06 0.6 20/06

JUN 0.3 0.5 20/04 0.5 3/07 0.5 10/06 0.5 21/06

JUL 0.3 0.6 2/05 0.5 29/07 0.5 28/08 0.5 21/10

AUG 0.3 0.7 14/02 0.6 28/04 0.6 30/09 0.6 29/09

SEP 0.4 1.0 4/03 0.8 3/02 0.8 30/09 0.8 18/04

OCT 0.5 1.5 24/09 1.5 29/02 1.3 28/23 1.2 30/03

NOV 0.7 2.2 30/01 2.1 11/02 2.1 17/01 1.9 28/09

DEC 1.1 3.3 19/01 2.6 11/01 2.4 21/01 2.3 24/04

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.5 3.3 DEC 19/01 2.6 DEC 11/01 2.4 DEC 21/01 2.3 DEC 24/04

* Hour Beginning 

## 2011 ANNUAL SUMMARY CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

Sparks11-7 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.4 0.8 5/13 0.8 13/09 0.8 12/10 0.7 26/11

FEB 0.4 0.7 1/09 0.7 11/10 0.6 3/08 0.6 4/10

MAR 0.4 0.7 17/10 0.6 21/09 0.6 29/11 0.6 1/11

APR 0.4 0.6 15/08 0.5 1/10 0.5 14/11 0.5 8/09

MAY 0.3 0.4 16/06 0.4 9/23 0.4 5/09 0.4 23/11

JUN 0.3 0.4 7/07 0.4 3/08 0.4 8/11 0.4 9/11

JUL 0.2 0.4 28/21 0.4 31/08 0.3 1/21 0.3 22/10

AUG 0.2 0.4 29/11 0.4 30/11 0.3 14/01 0.3 25/10

SEP 0.3 0.5 24/14 0.5 19/12 0.4 9/23 0.4 17/22

OCT 0.3 0.5 27/09 0.5 31/11 0.5 18/10 0.5 24/08

NOV 0.4 0.8 28/10 0.7 17/10 0.7 10/10 0.7 22/11

DEC 0.5 0.9 25/23 0.8 28/08 0.8 23/12 0.8 12/13

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.3 0.9 DEC 25/23 0.8 NOV

28/10 0.8 DEC 28/08 0.8 DEC 23/12

* Hour Beginning 

## 2011 ANNUAL SUMMARY CARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES

Toll11-8 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.033 0.049 8/16 0.048 11/04 0.048 21/14 0.048 29/11

FEB 0.039 0.055 28/04 0.053 27/14 0.051 14/5 0.050 13/14

MAR 0.041 0.058 28/13 0.054 1/02 0.053 5/12 0.053 18/18

APR 0.041 0.063 14/11 0.057 26/13 0.057 27/09 0.056 18/02

MAY 0.043 0.062 25/06 0.060 24/13 0.060 31/20 0.059 14/20

JUN 0.040 0.077 26/10 0.068 25/18 0.063 22/19 0.062 11/15

JUL 0.035 0.056 22/09 0.054 24/14 0.053 4/13 0.052 21/11

AUG 0.038 0.063 31/09 0.062 19/12 0.059 4/10 0.059 7/10

SEP 0.037 0.064 1/18 0.058 16/00 0.057 15/23 0.056 24/13

OCT 0.030 0.051 3/22 0.050 4/00 0.048 23/15 0.047 1/09

NOV 0.033 0.052 3/02 0.050 2/23 0.048 24/03 0.047 22/03

DEC 0.032 0.048 14/14 0.048 15/00 0.047 2/13 0.046 11/12

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.024 0.077 JUN 26/10 0.068 JUN 25/18 0.064 SEP 1/18 0.063 APR 14/11

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

Incline11-9 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.020 0.051 29/14 0.048 28/15 0.048 30/01 0.047 31/14

FEB 0.031 0.057 23/13 0.057 27/14 0.054 28/12 0.051 20/12

MAR 0.040 0.060 11/14 0.056 5/11 0.055 28/15 0.054 4/14

APR 0.043 0.069 14/13 0.062 27/13 0.060 10/13 0.060 13/13

MAY 0.044 0.069 5/20 0.067 25/08 0.064 8/12 0.064 14/20

JUN 0.044 0.079 25/17 0.077 26/13 0.072 27/10 0.070 24/14

JUL 0.041 0.072 28/16 0.071 1/16 0.063 5/12 0.063 29/12

AUG 0.044 0.072 18/14 0.071 5/13 0.071 11/12 0.068 6/13

SEP 0.034 0.066 14/16 0.062 8/13 0.061 2/15 0.061 4/17

OCT 0.026 0.055 4/02 0.054 3/22 0.052 24/13 0.051 16/05

NOV 0.026 0.053 3/16 0.050 23/22 0.048 24/10 0.047 14/14

DEC 0.018 0.046 2/13 0.046 15/00 0.043 4/14 0.043 14/23

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.034 0.079 JUN 25/17 0.077 JUN 26/13 0.072 JUN 27/10 0.072 JUL 28/16

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

Lemmon Valley11-10 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.012 0.046 29/14 0.046 30/01 0.044 31/14 0.043 17/13

FEB 0.022 0.047 14/06 0.047 15/12 0.046 24/13 0.046 28/14

MAR 0.032 0.051 31/15 0.050 5/12 0.050 11/14 0.050 18/10

APR 0.037 0.062 14/12 0.061 27/12 0.056 10/14 0.055 12/12

MAY 0.038 0.064 24/13 0.061 14/20 0.060 8/10 0.059 25/08

JUN 0.039 0.078 26/14 0.073 25/12 0.069 9/14 0.068 14/14

JUL 0.036 0.066 28/15 0.065 21/11 0.064 3/10 0.064 4/10

AUG 0.039 0.072 20/12 0.069 31/11 0.068 12/12 0.068 26/10

SEP 0.031 0.068 20/16 0.065 1/14 0.064 8/14 0.063 17/16

OCT 0.020 0.051 3/22 0.049 4/00 0.049 20/13 0.046 1/10

NOV 0.017 0.048 3/15 0.044 24/10 0.042 14/14 0.042 23/17

DEC 0.010 0.039 15/01 0.038 2/15 0.037 16/13 0.037 30/11

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.028 0.078 JUN 26/14 0.073 JUN 25/12 0.072 AUG

20/12 0.069 JUN 9/14

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

Reno 311-11 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.012 0.047 30/01 0.046 29/15 0.042 17/14 0.042 31/15

FEB 0.025 0.050 27/14 0.049 14/06 0.049 15/11 0.049 28/15

MAR 0.034 0.053 1/14 0.053 5/13 0.052 12/12 0.052 18/00

APR 0.038 0.066 14/13 0.061 27/13 0.058 10/14 0.058 12/13

MAY 0.040 0.069 24/14 0.063 14/20 0.062 8/10 0.062 25/08

JUN 0.040 0.078 26/15 0.073 25/11 0.071 9/15 0.071 14/15

JUL 0.038 0.072 21/11 0.068 12/12 0.068 28/12 0.067 4/11

AUG 0.038 0.074 31/12 0.073 6/11 0.073 20/11 0.072 22/12

SEP 0.032 0.069 20/16 0.068 19/15 0.067 2/17 0.066 1/15

OCT 0.021 0.051 3/23 0.051 19/13 0.051 20/14 0.051 22/13

NOV 0.019 0.052 3/15 0.049 23/23 0.047 24/12 0.045 14/14

DEC 0.012 0.044 30/11 0.041 15/11 0.039 2/15 0.039 16/11

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.029 0.078 JUN 26/15 0.074 AUG

31/12 0.073 JUN 25/11 0.073 AUG 6/11

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

South Reno11-12 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.013 0.045 17/14 0.045 31/15 0.044 22/14 0.044 29/15

FEB 0.024 0.051 27/13 0.051 28/13 0.050 15/05 0.050 20/15

MAR 0.034 0.057 11/15 0.056 31/15 0.055 5/12 0.055 27/09

APR 0.039 0.069 14/13 0.064 27/12 0.062 12/12 0.060 10/14

MAY 0.041 0.070 24/13 0.067 14/20 0.065 8/10 0.065 31/18

JUN 0.040 0.086 26/13 0.080 25/12 0.079 14/14 0.075 9/14

JUL 0.036 0.076 29/12 0.071 1/17 0.071 5/12 0.070 21/11

AUG 0.036 0.076 6/11 0.074 5/15 0.072 31/11 0.071 22/12

SEP 0.026 0.067 20/15 0.066 8/13 0.066 19/14 0.065 17/16

OCT 0.019 0.052 3/23 0.051 4/10 0.050 20/14 0.049 9/15

NOV 0.018 0.050 3/15 0.045 23/23 0.045 24/11 0.044 14/14

DEC 0.011 0.040 15/01 0.038 2/15 0.038 16/12 0.037 1/13

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.028 0.086 JUN 26/13 0.08 JUN 25/12 0.079 JUN 14/14 0.076 JUL 29/12

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

Sparks11-13 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.017 0.048 29/14 0.048 30/01 0.040 13/10 0.040 31/13

FEB 0.031 0.053 28/03 0.051 27/15 0.050 14/06 0.049 13/14

MAR 0.038 0.058 11/14 0.055 27/09 0.053 5/11 0.053 18/11

APR 0.039 0.067 14/13 0.060 18/02 0.059 27/13 0.057 13/13

MAY 0.042 0.066 24/13 0.064 14/21 0.062 8/10 0.062 22/11

JUN 0.041 0.074 26/15 0.073 25/11 0.071 15/13 0.071 20/15

JUL 0.038 0.071 12/16 0.066 21/11 0.063 4/11 0.063 5/12

AUG 0.038 0.070 31/13 0.067 6/12 0.066 11/12 0.065 7/11

SEP 0.033 0.062 19/15 0.061 1/16 0.060 8/15 0.060 14/15

OCT 0.025 0.051 4/10 0.050 3/23 0.049 19/13 0.049 24/14

NOV 0.024 0.051 3/14 0.047 24/10 0.046 23/19 0.044 18/13

DEC 0.018 0.044 15/02 0.043 30/11 0.038 2/20 0.037 5/14

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.032 0.074 JUN 26/15 0.073 JUN 25/11 0.071 JUN 15/13 0.071 JUN 20/15

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - ONE (1) HOUR AVERAGES

Toll11-14 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.032 0.046 29/17 0.043 31/08 0.042 9/08 0.042 11/00

FEB 0.039 0.057 22/10 0.050 27/09 0.049 28/00 0.048 14/02

MAR 0.040 0.054 28/09 0.051 18/17 0.049 5/08 0.049 17/22

APR 0.040 0.062 14/10 0.053 12/21 0.053 26/08 0.053 27/07

MAY 0.042 0.058 25/05 0.058 31/15 0.056 8/03 0.056 24/07

JUN 0.039 0.068 26/09 0.064 25/09 0.058 11/10 0.056 27/18

JUL 0.035 0.053 22/08 0.050 24/10 0.049 4/10 0.049 21/09

AUG 0.038 0.059 31/08 0.055 19/08 0.053 7/08 0.053 18/22

SEP 0.036 0.057 1/11 0.053 15/17 0.051 2/13 0.051 3/10

OCT 0.030 0.048 3/20 0.044 24/10 0.043 4/00 0.042 1/19

NOV 0.033 0.050 2/23 0.049 3/00 0.045 21/23 0.045 23/20

DEC 0.031 0.044 2/07 0.044 14/21 0.042 15/18 0.041 1/16

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.036 0.068 JUN 26/09 0.064 JUN 25/09 0.062 APR 14/10 0.059 AUG

31/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

Incline11-15 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.019 0.045 29/10 0.042 17/10 0.042 30/09 0.042 31/11

FEB 0.031 0.051 27/10 0.051 28/09 0.05 23/11 0.049 22/10

MAR 0.040 0.056 11/11 0.053 22/09 0.052 5/06 0.052 16/09

APR 0.042 0.065 14/11 0.059 27/11 0.056 12/11 0.056 13/07

MAY 0.044 0.063 8/08 0.062 25/07 0.061 5/15 0.060 4/08

JUN 0.043 0.075 25/10 0.072 26/10 0.068 24/10 0.066 11/12

JUL 0.041 0.063 28/10 0.061 1/11 0.058 12/09 0.057 5/10

AUG 0.044 0.064 6/09 0.064 19/10 0.063 18/11 0.063 31/09

SEP 0.033 0.059 14/10 0.057 15/10 0.056 2/11 0.056 7/10

OCT 0.026 0.052 3/20 0.050 4/00 0.049 24/10 0.047 15/23

NOV 0.025 0.051 3/12 0.046 23/20 0.046 24/03 0.044 22/08

DEC 0.018 0.042 2/12 0.042 14/23 0.041 15/00 0.038 4/11

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.034 0.075 JUN 25/10 0.072 JUN 26/10 0.068 JUN 24/10 0.066 JUN 11/12

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

Lemmon Valley11-16 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.011 0.040 29/22 0.033 31/11 0.032 9/11 0.031 19/08

FEB 0.022 0.045 15/08 0.043 14/22 0.043 15/16 0.043 24/08

MAR 0.032 0.048 18/08 0.046 12/10 0.046 16/09 0.046 19/09

APR 0.036 0.056 14/11 0.055 27/09 0.051 10/09 0.050 6/10

MAY 0.038 0.058 8/08 0.058 24/10 0.054 4/09 0.054 25/08

JUN 0.039 0.073 26/10 0.069 25/09 0.062 9/11 0.062 11/10

JUL 0.036 0.060 28/10 0.055 1/11 0.055 5/08 0.055 21/08

AUG 0.039 0.064 20/09 0.062 19/09 0.061 6/09 0.061 21/09

SEP 0.030 0.055 14/11 0.055 17/11 0.054 1/11 0.054 8/10

OCT 0.020 0.048 3/21 0.041 4/08 0.041 20/11 0.040 9/11

NOV 0.017 0.046 3/09 0.041 24/05 0.040 23/13 0.039 18/03

DEC 0.009 0.033 2/14 0.032 1/09 0.032 15/08 0.032 16/09

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.027 0.073 JUN 26/10 0.069 JUN 25/09 0.064 AUG

20/09 0.062 JUN 9/11

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

Reno 311-17 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.011 0.041 29/23 0.032 1/10 0.032 9/12 0.031 31/10

FEB 0.025 0.048 15/11 0.046 14/04 0.046 15/03 0.046 15/19

MAR 0.034 0.050 18/07 0.049 19/08 0.049 22/08 0.048 5/09

APR 0.037 0.060 14/09 0.055 27/10 0.054 10/09 0.053 6/10

MAY 0.040 0.061 24/10 0.060 8/08 0.058 25/07 0.058 31/17

JUN 0.039 0.073 26/10 0.070 25/09 0.064 9/10 0.063 11/10

JUL 0.037 0.065 28/11 0.062 21/08 0.060 12/10 0.059 22/10

AUG 0.037 0.067 20/08 0.066 6/08 0.064 31/09 0.063 19/09

SEP 0.031 0.060 14/10 0.059 1/11 0.058 8/10 0.058 17/11

OCT 0.021 0.045 4/08 0.044 3/20 0.044 11/08 0.044 24/11

NOV 0.019 0.050 3/12 0.046 23/16 0.044 18/09 0.042 24/10

DEC 0.011 0.039 30/06 0.036 15/09 0.036 16/09 0.034 2/14

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.028 0.073 JUN 26/10 0.070 JUN 25/09 0.067 AUG

20/08 0.066 AUG 6/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

South Reno11-18 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.012 0.038 30/09 0.035 17/11 0.034 9/10 0.034 22/10

FEB 0.023 0.049 15/04 0.048 14/20 0.048 15/12 0.047 24/09

MAR 0.033 0.052 18/06 0.051 19/09 0.050 5/08 0.050 12/09

APR 0.038 0.062 14/11 0.058 27/10 0.056 10/10 0.056 12/10

MAY 0.040 0.064 24/10 0.063 8/06 0.062 4/09 0.060 31/11

JUN 0.039 0.081 26/10 0.076 25/10 0.068 11/10 0.067 9/10

JUL 0.036 0.063 28/10 0.062 29/09 0.061 21/09 0.060 1/11

AUG 0.036 0.066 6/09 0.064 20/09 0.063 19/10 0.063 21/09

SEP 0.026 0.057 8/10 0.056 1/11 0.056 15/09 0.055 2/11

OCT 0.018 0.043 3/19 0.043 4/07 0.042 24/11 0.041 9/10

NOV 0.018 0.048 3/10 0.040 23/16 0.040 24/11 0.039 14/09

DEC 0.010 0.036 15/08 0.035 1/11 0.033 2/15 0.033 16/09

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.027 0.081 JUN 26/10 0.076 JUN 25/10 0.068 JUN 11/10 0.067 JUN 9/10

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

Sparks11-19 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.016 0.045 29/14 0.043 30/00 0.034 1/10 0.033 3/10

FEB 0.030 0.049 28/09 0.047 15/06 0.047 15/14 0.047 24/10

MAR 0.037 0.052 11/11 0.051 18/06 0.050 5/11 0.050 18/17

APR 0.038 0.062 14/11 0.055 13/12 0.054 27/11 0.053 12/10

MAY 0.042 0.060 8/05 0.060 24/09 0.059 22/10 0.059 25/07

JUN 0.040 0.072 26/10 0.069 25/09 0.065 15/10 0.064 22/18

JUL 0.038 0.061 12/10 0.060 21/08 0.058 20/11 0.058 28/10

AUG 0.037 0.062 31/09 0.061 11/09 0.060 6/09 0.059 20/08

SEP 0.033 0.055 14/11 0.054 1/11 0.053 8/10 0.052 15/11

OCT 0.025 0.047 24/10 0.044 3/20 0.044 4/09 0.042 11/08

NOV 0.024 0.048 3/05 0.044 23/16 0.044 23/16 0.041 18/01

DEC 0.017 0.039 30/06 0.035 15/10 0.035 16/09 0.034 2/13

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.031 0.072 JUN 26/10 0.069 JUN 25/09 0.065 JUN 15/10 0.064 JUN 22/18

* Hour Beginning 

## 2011 ANNUAL SUMMARY OZONE (ppm) - EIGHT (8) HOUR AVERAGES

Toll11-20 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 13.1 26.2 6 20.9 12 16.1 15 14.7 24

FEB 6.0 10.7 5 9.1 2 8.4 11 7.7 20

MAR 3.6 10.2 1 5.2 31 4.3 4 4.2 13

APR 3.7 7.9 15 6.1 12 3.9 27 3.8 9

MAY 3.5 6.7 6 4.6 21 4.5 24 4.4 3

JUN 3.8 5.9 11 5.8 14 5.1 26 4.2 8

JUL 5.0 10.6 29 6.5 23 5.4 5 4.9 8

AUG 5.0 7.6 1 7.1 25 6.2 4 5.6 31

SEP 6.9 14.7 9 8.5 30 7.2 15 7.0 12

OCT 5.6 7.9 30 7.7 12 7.4 21 7.0 27

NOV 8.5 14.1 20 11.2 29 9.8 26 8.9 8

DEC 14.1 29.7 26 19.6 14 16.3 11 15.9 23

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

6.6 29.7 DEC 26 26.2 JAN 6 20.9 JAN 12 19.6 DEC 14 

## 2011 ANNUAL SUMMARY

PM2.5 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 3 Designated11-21 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 13.3 26.9 6 20.6 12 16.3 15 13.9 21

FEB 6.0 10.9 5 9.1 2 8.7 11 7.5 20

MAR 3.5 10.7 1 4.2 13 4.1 4 3.9 22

APR 4.0 7.7 15 7.5 12 4.0 27 3.8 9

MAY 3.5 6.8 6 4.9 21 4.6 24 4.4 3

JUN 4.0 5.8 11 5.8 14 4.1 23 3.8 26

JUL 5.1 10.6 29 6.2 23 5.6 5 4.9 8

AUG 5.0 7.7 1 7.0 25 6.2 4 5.2 22

SEP 7.8 14.9 9 8.6 30 7.0 12 6.2 24

OCT 5.6 7.9 30 7.7 12 7.4 27 7.3 21

NOV 8.3 13.7 20 11.3 29 9.5 26 9.2 8

DEC 14.4 30.5 26 19.4 14 16.2 11 15.7 23

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

6.7 30.5 DEC 26 26.9 JAN 6 20.6 JAN 12 19.4 DEC 14 

## 2011 ANNUAL SUMMARY

PM2.5 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 3 Collocated11-22 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 13 30 8 28 6 28 7 23 5

FEB 7 17 27 14 5 12 3 12 4

MAR 4 12 1 11 9 7 4 7 5

APR 4 15 14 11 15 9 11 9 12

MAY 4 7 5 7 14 6 31 5 1

JUN 4 10 9 8 14 7 10 7 26

JUL 6 13 28 13 29 9 31 7 1

AUG 6 10 1 9 26 9 27 8 4

SEP 7 17 9 15 10 9 30 8 2

OCT 6 14 29 12 28 11 20 9 19

NOV 7 16 27 13 10 12 20 11 13

DEC 12 29 26 25 25 19 24 17 10

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

6.7 30 JAN 8 29 DEC 26 28 JAN 6 28 JAN 7 

## 2011 ANNUAL SUMMARY

Continuous PM2.5 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 3 BAM11-23 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 71 114 21 91 27 75 15 50 3

FEB 58 83 14 62 2 46 8 40 20

MAR 44 112 10 42 4 37 28 17 22

APR 20 36 15 26 27 13 3 12 9

MAY 15 26 3 14 21 13 27 12 9

JUN 22 30 20 26 8 24 14 18 26

JUL 25 36 26 28 20 25 8 20 14

AUG 29 35 31 34 19 34 25 29 1

SEP 33 48 30 34 24 28 18 27 6

OCT 36 58 24 48 18 37 12 30 30

NOV 38 63 29 51 17 31 11 27 23

DEC 41 60 23 52 11 43 17 25 5

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

35.4 114 JAN 21 112 MAR 10 91 JAN 27 83 FEB 14 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Galletti11-24 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 45 64 21 61 15 47 27 33 3

FEB 37 50 2 49 14 42 20 30 8

MAR 20 33 10 22 4 19 22 17 28

APR 14 25 15 14 27 11 9 10 3

MAY 10 16 3 13 21 8 9 7 15

JUN 15 19 14 16 26 16 8 15 20

JUL 14 16 8 15 26 15 14 12 2

AUG 18 23 1 22 25 19 31 17 19

SEP 22 43 30 19 18 19 24 15 6

OCT 22 34 24 28 30 24 12 17 18

NOV* 18 18 5

DEC

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

21.5 64 JAN 21 61 JAN 15 50 FEB 2 49 FEB 14

*PM10 FRM sampler replaced by continuous PM10 FEM monitor on November 11, 2011 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Plumb-Kit11-25 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV* 29 59 18 43 27 42 28 42 29

DEC 41 72 26 58 24 58 25 57 27

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

36.3 72 DEC 26 59 NOV 18 58 DEC 24 58 DEC 25

*Continuous PM10 FEM monitor replaced PM10 FRM sampler on November 11, 2011 

## 2011 ANNUAL SUMMARY

Continuous PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Plumb-Kit BAM11-26 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 40.3 64.4 12 52.3 21 51.2 6 50.2 15

FEB 22.0 36.0 5 35.7 2 29.3 11 21.7 20

MAR 14.3 39.1 1 24.3 31 19.0 10 16.2 4

APR 10.8 22.7 15 19.2 12 14.1 6 9.7 27

MAY 9.2 20.7 6 12.9 3 11.8 12 10.8 21

JUN 9.6 13.7 14 12.2 17 12.2 23 11.9 26

JUL 14.2 31.2 29 15.7 5 15.3 23 13.2 26

AUG 14.6 21.1 31 19.8 1 19.7 25 16.2 4

SEP 19.3 34.6 9 26.8 30 21.9 24 20.5 15

OCT 16.0 25.6 24 21.3 21 21.3 27 20.9 12

NOV 19.1 26.3 29 23.0 11 21.8 20 21.2 26

DEC 32.5 57.7 26 44.4 14 36.2 23 29.9 20

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

18.2 64.4 JAN 12 57.7 DEC 26 52.3 JAN 21 51.2 JAN 6 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 311-27 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 34 59 12 57 8 49 7 49 21

FEB 23 55 1 41 27 40 2 39 5

MAR 12 35 1 34 9 25 31 20 10

APR 11 31 14 23 15 22 4 19 12

MAY 9 22 14 18 5 18 6 16 25

JUN 9 18 18 15 9 15 22 15 28

JUL 13 26 29 22 28 19 30 17 6

AUG 13 19 31 18 25 18 26 17 1

SEP 17 30 9 26 10 25 30 22 24

OCT 15 27 24 24 28 24 29 22 27

NOV 18 39 3 30 27 29 28 28 10

DEC 30 55 21 55 26 40 14 40 25

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

17.0 59 JAN 12 57 JAN 8 55 FEB 1 55 DEC 21 

## 2011 ANNUAL SUMMARY

Continuous PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 3 BAM11-28 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 38 54 21 41 27 33 15 23 3

FEB 30 35 2 35 14 31 20 20 8

MAR 26 64 28 24 4 21 10 14 22

APR 11 21 15 13 27 8 9 8 3

MAY 10 20 21 13 3 7 9 7 27

JUN 14 20 14 16 20 14 26 11 8

JUL 14 19 26 13 20 13 8 12 2

AUG 16 23 25 19 31 17 19 14 1

SEP 22 34 12 25 30 20 24 17 18

OCT* 19 20 18 19 24 18 12

NOV

DEC

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

19.3 64 MAR 28 54 JAN 21 41 JAN 27 35 FEB 2

*PM10 FRM sampler replaced by continuous PM10 FEM monitor on October 28, 2011 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

South Reno11-29 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT* 22 24 28 24 31 23 29 18 30

NOV 21 59 18 52 3 30 28 28 29

DEC 27 43 26 40 14 40 23 36 27

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

23.9 59 NOV 18 52 NOV 23 43 DEC 26 40 DEC 14

*Continuous PM10 FEM monitor replaced PM10 FRM sampler on October 28, 2011 

## 2011 ANNUAL SUMMARY

Continuous PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

South Reno BAM11-30 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 42 62 15 61 21 41 27 24 9

FEB 34 62 14 35 2 30 20 26 8

MAR 20 45 10 18 22 10 28 6 16

APR 11 20 15 12 27 9 9 7 21

MAY 8 13 21 9 3 7 27 6 15

JUN 13 18 14 17 20 14 26 12 8

JUL 15 17 8 16 20 16 26 14 2

AUG 19 24 31 23 25 22 19 18 1

SEP 26 38 30 27 24 24 6 22 18

OCT 26 35 30 34 24 28 12 25 18

NOV 32 54 29 33 11 29 17 22 5

DEC 35 55 23 52 11 35 17 21 5

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

23.3 62 JAN 15 62 FEB 14 61 JAN 21 55 DEC 23 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Sparks Designated11-31 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 42 62 21 62 15 42 27 23 9

FEB 37 77 14 32 20 26 8 13 26

MAR 16 29 10 28 4 10 28 7 16

APR 11 20 15 12 27 9 9 7 21

MAY 8 13 21 11 3 7 27 6 9

JUN 14 18 14 17 20 15 26 13 8

JUL 15 17 8 16 26 16 2 15 20

AUG 19 23 25 22 31 22 19 19 1

SEP 26 37 30 27 24 25 6 22 18

OCT 26 35 30 35 24 29 12 27 18

NOV 31 55 29 33 11 28 17 20 5

DEC 36 56 23 54 11 34 17 22 5

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

23.2 77 FEB 14 62 JAN 21 62 JAN 15 56 DEC 23 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Sparks Collocated11-32 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN

FEB

MAR

APR

MAY

JUN

JUL* 18 34 29 24 28 17 23 16 27

AUG 15 19 24 19 25 18 3 18 27

SEP 21 38 30 37 9 32 10 29 29

OCT 20 41 28 37 29 33 30 32 24

NOV 27 69 3 49 29 46 10 45 16

DEC 40 67 18 60 25 58 7 58 10

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

24.2 69 NOV 3 67 DEC 18 60 DEC 25 58 DEC 7

*Continuous PM10 FEM monitor online July 23, 2011 

## 2011 ANNUAL SUMMARY

Continuous PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Sparks BAM11-33 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 25 38 21 27 27 24 15 18 9

FEB 31 65 14 31 2 22 8 21 20

MAR 15 23 10 20 28 14 22 13 4

APR 13 24 15 15 27 10 3 9 9

MAY 9 15 3 11 21 7 9 6 27

JUN 11 14 14 14 26 13 20 10 8

JUL 15 17 20 16 8 16 26 15 14

AUG 20 27 25 26 31 25 19 17 1

SEP 23 38 24 29 30 18 6 16 12

OCT* 12 18 12 6 6

NOV

DEC

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

17.8 65 FEB 14 38 JAN 21 38 SEP 24 31 FEB 2

*PM10 FRM sampler replaced by continuous PM10 FEM monitor on October 15, 2011 

## 2011 ANNUAL SUMMARY

PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Toll11-34 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT* 21 38 31 36 30 34 29 32 28

NOV 19 122 18 61 30 29 17 26 29

DEC 24 42 30 34 23 34 26 33 7

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

21.4 122 NOV 18 61 NOV 30 42 DEC 30 38 OCT 31

*Continuous PM10 FEM monitor replaced PM10 FRM sampler on October 15, 2011 

## 2011 ANNUAL SUMMARY

Continuous PM10 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Toll BAM11-35 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 24.2 38.8 12 34.6 21 30.4 24 30.0 15

FEB 14.3 24.7 2 22.4 5 18.6 11 16.4 14

MAR 9.3 25.7 1 16.4 31 13.1 10 10.6 4

APR 6.0 12.5 15 11.2 12 9.3 6 4.8 27

MAY 4.6 11.3 6 7.1 3 6.7 12 4.8 21

JUN 4.6 6.8 17 6.4 23 6.1 20 6.0 14

JUL 7.1 15.8 29 7.9 5 7.1 26 5.9 11

AUG 7.4 12.0 31 9.3 1 9.2 25 8.1 22

SEP 9.8 15.1 9 14.7 30 12.9 24 10.5 15

OCT 8.7 15.6 24 12.5 27 11.6 21 10.8 12

NOV 9.0 13.0 29 12.1 2 12.0 11 9.9 26

DEC 16.6 24.2 26 21.6 14 18.9 23 17.0 2

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

10.0 38.8 JAN 12 34.6 JAN 21 30.4 JAN 24 30.0 JAN 15 

## 2011 ANNUAL SUMMARY

PM10-2.5 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 311-36 

## Location:

MONTH AVG. HIGH DATE 2ND

HIGH DATE 3RD

HIGH DATE 4TH

HIGH DATE

JAN 21 39 12 34 21 32 24 31 28

FEB 17 46 1 30 14 29 2 25 3

MAR 8 22 1 22 9 18 31 14 10

APR 7 16 14 15 4 12 2 12 15

MAY 6 15 14 14 25 11 5 10 6

JUN 5 14 18 11 28 10 22 9 16

JUL 7 13 29 11 25 11 30 10 6

AUG 7 13 31 11 16 10 25 9 20

SEP 10 16 24 16 30 13 1 13 9

OCT 9 19 24 17 25 15 31 14 27

NOV 11 32 3 27 18 18 28 16 29

DEC 18 43 21 26 26 26 27 24 20

ANNUAL

STATISTICS AVG. HIGH MONTH/

DAY 2ND

HIGH MONTH/

DAY 3RD

HIGH MONTH/

DAY 4TH

HIGH MONTH/

DAY

10.5 46 FEB 1 43 DEC 21 39 JAN 12 34 JAN 21 

## 2011 ANNUAL SUMMARY

Continuous PM10-2.5 ( μ g/m 3 

## ) - 24 HOUR AVERAGES

Reno 3 BAM11-37 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 29.8 65.1 28/10 58.5 8/11 57.5 13/10 51.8 29/11

FEB 22.9 64.3 27/19 57.6 28/00 51.3 3/07 51.2 13/19

MAR 13.5 58.2 1/20 54.8 14/07 48.6 10/00 47.0 27/06

APR 9.7 52.3 15/06 51.3 14/06 42.3 11/06 40.4 4/21

MAY 9.6 46.9 4/05 43.4 5/07 43.3 12/06 42.6 25/06

JUN 8.4 40.8 28/06 34.8 16/21 25.5 10/07 25.5 24/03

JUL 9.3 38.6 19/06 36.3 18/06 35.1 30/23 33.4 25/08

AUG 10.3 45.2 31/06 30.1 25/00 27.9 13/01 27.6 4/06

SEP 15.6 48.7 26/19 45.4 29/21 44.5 15/07 43.4 2/22

OCT 17.4 55.4 24/08 49.2 13/10 48.6 23/21 46.0 27/19

NOV 22.1 59.5 22/10 53.9 28/12 48.8 10/09 48.5 3/07

DEC 32.0 71.1 28/10 58.3 27/09 58.0 21/08 58.0 26/17

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

16.7 71.1 DEC 28/10 65.1 JAN 28/10 64.3 FEB 27/19 59.5 NOV

22/10

* Hour Beginning 

## 2011 ANNUAL SUMMARY NO2 (ppb) - HOURLY AVERAGES

Reno 311-38 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 32.7 301.5 28/08 264.0 25/07 199.4 13/07 187.0 8/08

FEB 15.5 194.5 7/08 165.3 5/08 159.8 3/07 120.7 4/06

MAR 4.4 70.4 29/06 67.8 17/06 66.6 14/07 54.9 9/07

APR 2.4 78.1 15/06 61.3 14/06 49.6 11/06 49.4 6/07

MAY 2.1 74.2 12/06 56.1 5/07 44.7 4/06 31.1 3/06

JUN 1.4 19.6 28/06 16.8 8/08 16.7 3/06 15.3 10/07

JUL 1.6 54.9 18/06 40.8 19/06 17.1 12/05 17.0 26/07

AUG 1.5 59.5 31/06 19.9 15/07 14.8 13/07 13.9 2/06

SEP 3.8 82.8 15/07 52.4 30/22 45.6 13/07 34.4 27/06

OCT 9.0 163.6 24/08 112.7 13/06 97.7 26/06 80.9 15/00

NOV 17.6 184.6 22/09 182.1 10/09 176.0 15/08 168.3 28/08

DEC 38.0 250.8 21/08 209.7 12/08 188.1 2/07 177.7 11/07

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

10.8 301.5 JAN 28/08 264.0 JAN 25/07 250.8 DEC 21/08 209.7 DEC 12/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY NO (ppb) - HOURLY AVERAGES

Reno 311-39 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 63.1 360.4 28/08 314.0 25/07 248.8 13/08 236.1 8/08

FEB 38.9 239.4 7/08 212.6 5/08 211.5 3/07 163.1 4/06

MAR 18.4 121.9 14/07 114.3 17/06 113.0 29/07 104.0 1/20

APR 12.6 130.9 15/06 113.0 14/06 92.3 11/06 89.5 6/07

MAY 12.2 118.0 12/06 99.9 5/07 91.5 4/06 73.2 3/06

JUN 10.3 60.8 28/06 41.2 10/07 39.9 16/21 38.5 3/06

JUL 11.5 91.6 18/06 80.0 19/06 50.7 25/08 49.2 12/05

AUG 12.5 105.3 31/06 42.7 13/07 42.2 15/07 40.0 2/06

SEP 20.0 127.8 15/07 91.9 30/09 76.9 13/07 73.7 26/20

OCT 27.0 219.4 24/08 142.0 13/06 137.5 26/06 109.0 15/00

NOV 40.3 241.4 22/09 231.3 10/09 224.9 15/08 218.6 28/08

DEC 70.7 309.3 21/08 265.7 12/08 240.3 2/07 226.9 11/07

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

28.1 360.4 JAN 28/08 314.0 JAN 25/07 309.3 DEC 21/08 265.7 DEC 12/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY NOx (ppb) - HOURLY AVERAGES

Reno 311-40 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 29.0 67.2 28/10 57.2 13/10 56.6 8/11 53.6 25/07

FEB 21.7 65.3 27/19 56.1 28/00 49.6 13/19 48.6 10/19

MAR 12.6 57.6 1/20 52.1 14/07 46.4 10/00 46.3 5/01

APR 8.8 52.4 15/06 49.0 14/06 39.9 11/06 38.5 4/20

MAY 8.9 45.7 4/05 41.4 12/06 41.4 25/06 41.3 5/07

JUN 7.9 40.0 28/06 33.7 16/21 26.4 24/03 24.0 10/07

JUL 8.8 36.6 19/06 35.2 30/23 33.9 18/06 32.0 25/08

AUG 10.1 44.5 31/06 31.5 25/00 29.1 30/00 27.6 13/01

SEP 15.4 50.0 26/19 46.3 29/21 44.4 15/07 42.2 2/22

OCT 17.4 55.8 13/10 55.4 24/08 49.8 23/21 46.7 12/20

NOV 21.3 59.5 22/10 52.6 28/12 47.1 10/09 46.5 15/08

DEC 31.1 71.9 28/10 60.2 26/17 58.7 21/08 57.9 12/09

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

16.1 71.9 DEC 28/10 67.2 JAN 28/10 65.3 FEB 27/19 60.2 DEC 26/17

* Hour Beginning 

## 2011 ANNUAL SUMMARY TRACE NOy-NO (ppb) - HOURLY AVERAGES

Reno 311-41 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 32.1 306.5 28/08 283.5 25/07 195.4 13/08 187.7 24/08

FEB 15.0 189.2 7/08 162.2 5/08 153.4 3/07 116.2 4/06

MAR 4.7 71.7 17/06 69.1 29/07 60.8 14/07 51.1 9/07

APR 2.8 72.0 15/06 60.6 14/06 48.4 6/07 47.1 11/06

MAY 2.5 73.0 12/06 56.2 5/07 43.9 4/06 30.4 3/06

JUN 1.9 20.0 28/06 18.2 3/06 15.7 20/06 15.5 10/07

JUL 1.9 53.2 18/06 40.1 19/06 18.1 12/05 17.0 25/08

AUG 1.6 59.7 31/06 19.6 15/07 15.0 13/07 13.3 2/06

SEP 3.6 82.2 15/07 53.1 30/09 44.8 13/07 33.4 24/08

OCT 9.1 165.3 24/08 129.9 13/06 105.9 26/05 77.5 15/00

NOV 17.1 187.4 22/09 178.7 10/09 172.6 15/08 162.4 28/08

DEC 37.7 248.9 21/08 216.1 12/09 191.8 2/07 180.0 11/07

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

10.8 306.5 JAN 28/08 283.5 JAN 25/07 248.9 DEC 21/08 216.1 DEC 12/09

* Hour Beginning 

## 2011 ANNUAL SUMMARY Trace NO (ppb) - HOURLY AVERAGES

Reno 311-42 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 61.1 367.4 28/08 337.0 25/07 245.2 13/08 234.6 24/08

FEB 36.6 229.4 7/08 205.3 5/08 198.1 3/07 159.9 8/07

MAR 17.3 116.2 17/06 112.9 14/07 110.9 29/07 99.6 1/20

APR 11.6 124.3 15/06 109.6 14/06 87.0 11/06 85.8 6/07

MAY 11.4 114.5 12/06 97.5 5/07 88.2 4/06 71.2 3/06

JUN 9.7 60.1 28/06 39.5 10/07 39.3 3/06 37.2 16/21

JUL 10.7 87.1 18/06 76.8 19/06 49.0 25/08 48.8 12/05

AUG 11.7 104.2 31/06 41.1 13/07 40.1 15/07 37.6 2/06

SEP 19.0 126.4 15/07 93.2 30/09 75.6 13/07 74.9 26/20

OCT 26.5 220.7 24/08 161.9 13/06 144.0 26/05 105.0 15/00

NOV 38.4 243.9 22/09 225.7 10/09 219.0 15/08 208.7 28/08

DEC 68.8 307.4 21/08 274.0 12/09 242.6 2/07 226.0 11/07

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

26.9 367.4 JAN 28/08 337.0 JAN 25/07 307.4 DEC 21/08 274.0 DEC 12/09

* Hour Beginning 

## 2011 ANNUAL SUMMARY TRACE NOy (ppb) - HOURLY AVERAGES

Reno 311-43 

## Location:

MONTH AVG. HIGH DATE/

HOUR* 2ND

HIGH DATE/

HOUR* 3RD

HIGH DATE/

HOUR* 4TH

HIGH DATE/

HOUR*

JAN 0.97 7.67 28/08 6.52 25/07 5.59 24/08 4.93 13/08

FEB 0.76 4.75 5/08 4.69 7/07 3.94 3/07 3.37 8/07

MAR 0.32 3.56 12/01 2.48 1/20 2.15 29/08 1.95 17/06

APR 0.45 2.49 15/07 2.00 14/06 1.70 11/06 1.65 6/07

MAY 0.30 2.03 12/06 1.42 5/07 1.10 4/06 1.07 3/06

JUN 0.32 2.01 29/01 1.03 28/06 0.85 3/07 0.82 27/23

JUL 0.46 2.81 19/09 1.94 18/06 0.97 12/05 0.79 7/08

AUG 0.43 1.85 31/06 1.17 4/22 1.01 8/08 0.80 15/07

SEP 0.44 2.13 15/07 1.59 30/22 1.30 13/07 1.22 16/08

OCT 0.47 2.71 13/06 2.64 26/06 2.45 24/09 2.43 15/00

NOV 0.64 5.61 22/10 4.74 28/09 4.40 10/09 4.36 15/08

DEC 1.19 6.37 21/08 5.69 12/08 5.45 2/07 5.14 11/08

ANNUAL

STATISTICS AVG. HIGH MONTH

DATE/HOUR* 2ND

HIGH MONTH

DATE/HOUR* 3RD

HIGH MONTH

DATE/HOUR* 4TH

HIGH MONTH

DATE/HOUR*

0.6 7.67 JAN 28/08 6.52 JAN 25/07 6.37 DEC 21/08 5.69 DEC 12/08

* Hour Beginning 

## 2011 ANNUAL SUMMARY TRACE SO2 (ppb) - HOURLY AVERAGES

Reno 3

## Washoe County

Ambient Air Monitoring Data

(2010)Pollutant Averaging Period Exceedance Dates

PM 10 24-hour none

PM 2.5 24-hour Jan 5.

O 3 8-hour Aug 20.

1-hour none

8-hour none

NO 2 1-hour none

1-hour

24-hour

3-hour

3-month

quarterly Pb n/a - Pb was not monitored in 2010. 

## Exceedances (2010)

CO

SO 2 n/a - Monitoring began at the RNO site on January 1, 2011.

10-1Location: GallettiMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.5 2.3 6/2 1.9 6/10 1.6 3/4 1.6 15/10FEB 0.5 1.4 28/5 1.3 14/7 1.2 4/10 1.2 13/8MAR 0.4 1.1 16/9 1.0 11/7 0.9 12/9 0.9 15/8APR 0.4 1.1 24/6 0.9 8/7 0.9 23/6 0.8 7/8MAY 0.3 0.7 3/9 0.7 25/7 0.6 12/7 0.6 30/2JUN 0.3 1.0 14/5 0.9 15/6 0.9 30/6 0.8 8/6JUL 0.3 0.5 2/10 0.5 16/8 0.5 31/7 0.5 1/7AUG 0.3 0.7 26/7 0.5 13/9 0.5 17/9 0.5 24/11SEP 0.3 0.9 18/7 0.8 25/1 0.8 28/7 0.8 30/7OCT 0.3 1.0 29/10 1.0 28/7 0.9 30/2 0.8 21/8NOV 0.5 1.9 27/1 1.6 15/3 1.4 14/2 1.4 5/9DEC 0.6 1.9 23/3 1.8 13/0 1.6 24/7 1.5 8/1ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.4 2.3 Jan 6/2 1.9 Jan 6/10 1.9 Nov 27/1 1.9 Dec 23/3* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-2Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.6 1.7 6/1 1.3 3/1 1.2 5/7 1.1 15/9FEB 0.5 1.0 14/1 1.0 2/9 1.0 23/1 0.9 16/8MAR 0.5 1.0 16/8 1.0 15/8 0.9 19/7 0.8 1/8APR 0.4 0.8 7/6 0.7 24/2 0.7 10/2 0.6 14/6MAY 0.2 0.5 7/6 0.4 14/3 0.4 3/5 0.3 25/7JUN 0.2 0.3 28/6 0.3 26/22 0.3 29/8 0.3 24/10JUL 0.2 0.4 5/1 0.3 25/6 0.3 3/19 0.3 26/6AUG 0.2 0.4 24/5 0.4 25/3 0.3 13/1 0.3 17/7SEP 0.2 0.4 25/2 0.4 2/3 0.4 7/3 0.3 3/7OCT 0.1 0.5 30/2 0.4 27/2 0.4 29/8 0.4 28/8NOV 0.3 1.0 27/1 0.8 12/1 0.8 30/1 0.7 29/10DEC 0.3 1.1 24/1 1.0 2/6 0.8 25/3 0.8 12/23ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.3 1.7 Jan 6/1 1.3 Jan 3/1 1.2 Jan 5/7 1.1 Jan 15/9* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-3Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.4 1.8 6/0 1.8 5/12 1.5 17/0 1.2 15/23FEB 0.2 1.0 28/6 0.8 4/11 0.8 23/23 0.4 12/9MAR 0.1 0.5 12/9 0.4 14/2 0.3 28/7 0.2 23/7APR 0.1 0.4 23/9 0.4 8/7 0.4 24/7 0.3 2/8MAY 0.1 0.2 7/1 0.1 3/9 0.1 30/0 0.1 21/7JUN 0.0 0.2 2/9 0.1 6/6 0.1 22/14 0.1 24/8JUL 0.0 0.1 16/8 0.1 25/3 0.1 31/6 0.1 26/11AUG 0.1 0.5 8/7 0.5 6/22 0.5 9/1 0.2 26/8SEP 0.1 0.4 24/22 0.2 27/19 0.2 29/19 0.2 26/0OCT 0.1 0.5 21/8 0.4 22/9 0.3 27/0 0.3 26/7NOV 0.2 1.3 15/1 1.2 30/23 1.0 27/2 0.9 15/9DEC 0.3 1.9 1/12 1.3 23/12 1.0 21/23 1.0 13/15ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.1 1.9 Dec 1/12 1.8 Jan 6/0 1.8 Jan 5/12 1.5 Jan 17/0* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-4Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.7 1.6 5/23 1.4 5/11 1.3 6/11 1.3 1/1FEB 0.6 1.0 23/10 0.9 2/12 0.9 12/11 0.8 4/9MAR 0.4 0.8 14/8 0.8 1/9 0.8 12/8 0.8 15/13APR 0.3 0.7 27/20 0.7 28/19 0.7 29/21 0.7 30/8MAY 0.2 0.4 7/7 0.4 3/7 0.4 12/7 0.4 13/7JUN 0.2 0.3 2/8 0.3 15/7 0.3 24/8 0.3 28/9JUL 0.2 0.3 16/9 0.3 27/8 0.3 9/8 0.3 23/10AUG 0.2 0.4 26/7 0.3 24/9 0.3 25/11 0.3 27/11SEP 0.2 0.4 30/23 0.4 29/12 0.3 26/0 0.3 28/11OCT 0.3 0.7 28/13 0.6 30/0 0.6 29/9 0.6 27/7NOV 0.3 0.8 30/23 0.8 27/2 0.7 5/12 0.7 15/1DEC 0.3 0.9 23/11 0.9 1/9 0.8 1/21 0.8 24/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.3 1.6 Jan 5/23 1.4 Jan 5/11 1.3 Jan 6/11 1.3 Jan 1/1* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-5Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.8 2.5 6/8 2.1 16/10 2.0 15/10 2.0 5/23FEB 0.8 1.8 1/3 1.8 28/4 1.8 14/4 1.5 25/8MAR 0.7 1.6 15/8 1.6 11/6 1.5 16/7 1.4 19/7APR 0.4 1.0 2/8 1.0 7/6 0.9 1/9 0.8 24/6MAY 0.3 0.8 12/6 0.8 3/5 0.7 14/6 0.6 29/6JUN 0.3 0.7 27/3 0.6 14/2 0.5 13/4 0.5 22/5JUL 0.3 0.8 5/3 0.6 25/4 0.5 16/6 0.5 22/8AUG 0.2 0.6 25/9 0.5 13/5 0.5 26/7 0.5 24/2SEP 0.3 1.1 30/0 1.0 25/1 1.0 26/3 0.9 28/0OCT 0.4 1.4 28/8 1.2 30/2 1.0 9/1 1.0 19/7NOV 0.7 1.8 14/4 1.8 26/2 1.7 29/7 1.7 17/22DEC 0.7 2.8 24/2 2.6 25/4 2.3 23/2 2.0 13/0ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.5 2.8 Dec 24/2 2.6 Dec 25/4 2.5 Jan 6/8 2.3 Dec 23/2* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-6Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.3 0.8 16/0 0.6 17/7 0.5 25/10 0.5 15/12FEB 0.2 0.6 23/12 0.4 22/12 0.4 2/10 0.4 4/11MAR 0.2 0.4 15/10 0.4 24/11 0.4 16/11 0.4 2/10APR 0.2 0.4 23/9 0.4 1/8 0.4 6/8 0.3 2/9MAY 0.1 0.3 28/19 0.3 29/18 0.2 10/12 0.2 31/0JUN 0.2 0.3 28/22 0.3 30/18 0.3 7/11 0.3 8/0JUL 0.2 0.3 1/7 0.3 1/15 0.3 2/2 0.2 23/19AUG 0.1 0.3 27/9 0.3 5/18 0.3 24/12 0.2 6/12SEP 0.2 0.7 25/13 0.4 24/12 0.4 23/20 0.4 25/21OCT 0.2 0.5 12/10 0.4 8/9 0.4 28/12 0.4 13/10NOV 0.4 0.8 30/23 0.7 27/2 0.7 5/11 0.6 29/11DEC 0.4 0.9 8/4 0.9 13/12 0.9 1/10 0.8 2/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.2 0.9 8/4 0.9 13/12 0.9 1/10 0.8 16/0* Hour Beginning2010 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES10-7Location: InclineMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.032 0.051 20/22 0.050 16/12 0.049 17/4 0.049 21/0FEB 0.035 0.052 19/10 0.051 18/10 0.051 23/13 0.049 13/13MAR 0.042 0.060 24/12 0.056 15/14 0.056 23/15 0.056 29/1APR 0.045 0.067 16/9 0.064 10/23 0.064 15/12 0.063 25/15MAY 0.044 0.071 1/23 0.065 2/12 0.063 5/15 0.062 16/11JUN 0.039 0.070 8/22 0.065 8/13 0.063 7/16 0.063 10/4JUL 0.041 0.066 6/17 0.066 27/14 0.066 28/9 0.065 30/10AUG 0.047 0.066 27/0 0.064 20/18 0.064 28/1 0.063 10/10SEP 0.041 0.063 4/9 0.063 7/18 0.063 26/13 0.059 24/14OCT 0.032 0.061 2/11 0.060 1/11 0.051 29/9 0.047 28/14NOV 0.033 0.053 18/21 0.052 19/0 0.048 7/1 0.048 20/3DEC 0.032 0.050 8/7 0.048 19/2 0.048 24/12 0.048 31/13ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.026 0.071 May 1/23 0.070 Jun 8/22 0.067 Apr 16/9 0.066 Jul 6/17* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-8Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.023 0.047 20/2 0.046 17/14 0.046 21/0 0.046 22/13FEB 0.026 0.051 22/15 0.049 12/10 0.049 13/15 0.049 14/15MAR 0.035 0.062 24/20 0.056 30/15 0.055 23/15 0.055 29/3APR 0.042 0.069 16/10 0.064 10/13 0.064 17/14 0.062 15/13MAY 0.043 0.069 5/9 0.067 20/14 0.066 14/15 0.066 31/6JUN 0.041 0.075 8/14 0.072 7/14 0.072 29/10 0.066 9/23JUL 0.043 0.074 30/10 0.073 27/12 0.070 22/15 0.070 23/15AUG 0.046 0.076 5/13 0.075 4/12 0.074 20/14 0.072 9/12SEP 0.036 0.071 25/14 0.071 26/13 0.071 28/14 0.067 29/13OCT 0.028 0.070 2/10 0.067 1/11 0.051 8/15 0.051 9/13NOV 0.032 0.051 18/18 0.048 17/23 0.046 6/23 0.046 7/0DEC 0.026 0.048 19/3 0.047 18/10 0.046 6/2 0.046 9/5ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.035 0.076 Aug 5/13 0.075 June 8/14 0.075 Aug 4/12 0.074 Jul 30/10* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-9Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.015 0.048 21/0 0.046 20/23 0.044 17/14 0.043 13/12FEB 0.019 0.047 28/14 0.046 12/11 0.044 16/15 0.044 21/12MAR 0.031 0.061 24/19 0.055 29/01 0.053 28/15 0.053 30/14APR 0.038 0.067 16/10 0.064 10/13 0.064 25/13 0.063 19/12MAY 0.040 0.071 20/13 0.067 2/13 0.065 5/14 0.063 16/12JUN 0.039 0.075 29/10 0.073 24/11 0.070 8/12 0.069 7/16JUL 0.042 0.076 30/11 0.074 22/16 0.074 28/12 0.073 31/12AUG 0.044 0.079 8/11 0.078 15/11 0.077 5/11 0.074 25/13SEP 0.034 0.073 26/15 0.069 4/10 0.066 3/12 0.066 25/15OCT 0.023 0.069 2/11 0.061 1/12 0.052 15/13 0.051 9/13NOV 0.020 0.050 18/13 0.048 7/2 0.047 19/4 0.046 6/17DEC 0.018 0.046 19/3 0.045 18/11 0.044 26/14 0.043 8/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.030 0.079 Aug 8/11 0.078 Aug 15/11 0.077 Aug 5/11 0.076 Jul 30/11* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-10Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.015 0.048 21/0 0.047 20/23 0.044 17/13 0.044 31/15FEB 0.020 0.047 28/15 0.046 5/13 0.046 12/13 0.045 13/14MAR 0.031 0.062 24/19 0.056 29/2 0.054 28/11 0.053 30/14APR 0.039 0.067 16/10 0.065 10/12 0.065 25/11 0.064 17/14MAY 0.040 0.070 20/13 0.066 14/14 0.066 16/14 0.065 5/14JUN 0.038 0.079 29/10 0.073 8/12 0.071 24/11 0.068 7/14JUL 0.040 0.075 22/16 0.074 30/11 0.072 20/12 0.070 19/14AUG 0.040 0.080 5/12 0.075 20/13 0.074 6/11 0.072 9/12SEP 0.030 0.068 26/13 0.067 3/12 0.067 4/11 0.065 29/12OCT 0.022 0.067 2/10 0.063 1/13 0.050 9/14 0.048 15/13NOV 0.020 0.051 18/21 0.049 19/0 0.047 7/4 0.045 6/11DEC 0.019 0.046 19/3 0.044 18/11 0.042 8/10 0.042 28/19ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.030 0.080 Aug 5/12 0.079 Jun 29/10 0.075 Jul 22/16 0.075 Aug 20/13* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-11Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.014 0.045 20/23 0.044 31/14 0.043 17/14 0.043 18/20FEB 0.019 0.048 21/11 0.048 28/14 0.047 12/12 0.046 18/13MAR 0.029 0.063 24/19 0.055 29/1 0.054 28/11 0.053 21/10APR 0.037 0.068 16/10 0.066 10/13 0.066 25/14 0.065 17/14MAY 0.039 0.071 20/13 0.067 16/14 0.066 14/14 0.065 5/14JUN 0.036 0.076 29/10 0.075 8/12 0.075 24/11 0.069 23/12JUL 0.039 0.080 30/11 0.078 28/13 0.076 19/14 0.075 31/13AUG 0.038 0.084 5/12 0.081 6/11 0.080 15/11 0.078 9/13SEP 0.027 0.073 26/15 0.071 4/10 0.069 25/15 0.066 3/13OCT 0.020 0.066 1/11 0.064 2/11 0.053 15/12 0.052 9/14NOV 0.019 0.052 18/21 0.049 19/0 0.047 6/17 0.047 7/4DEC 0.018 0.044 18/11 0.044 19/23 0.043 26/1 0.043 28/20ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.028 0.084 Aug 5/12 0.081 Aug 6/11 0.080 Jul 30/11 0.080 Aug 15/11* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-12Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.021 0.048 20/23 0.048 21/0 0.045 17/13 0.045 19/23FEB 0.025 0.046 12/14 0.046 21/12 0.045 4/20 0.045 5/14MAR 0.036 0.061 24/19 0.055 29/3 0.055 30/17 0.054 21/9APR 0.041 0.068 16/10 0.065 19/11 0.063 10/12 0.061 18/16MAY 0.041 0.065 14/16 0.065 20/13 0.064 4/21 0.063 5/14JUN 0.039 0.071 8/14 0.070 29/10 0.068 9/22 0.065 7/16JUL 0.044 0.077 22/17 0.075 30/10 0.074 28/12 0.073 21/12AUG 0.048 0.083 20/16 0.081 5/12 0.079 6/11 0.077 4/13SEP 0.040 0.075 16/14 0.071 14/14 0.069 26/13 0.069 29/12OCT 0.029 0.067 2/11 0.066 1/11 0.049 9/12 0.048 6/12NOV 0.025 0.052 18/15 0.050 19/0 0.048 7/2 0.048 17/21DEC 0.024 0.048 8/8 0.047 19/2 0.044 18/11 0.043 26/1ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.034 0.083 Aug 20/16 0.081 Aug 5/12 0.079 Aug 6/11 0.077 Jul 22/17* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES10-13Location: InclineMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.031 0.047 20/17 0.046 19/20 0.045 16/22 0.044 18/15FEB 0.035 0.046 18/9 0.046 19/9 0.046 23/9 0.045 13/8MAR 0.042 0.058 24/11 0.055 28/21 0.053 26/9 0.052 21/1APR 0.044 0.061 15/9 0.061 16/8 0.060 10/8 0.059 11/8MAY 0.043 0.062 2/8 0.061 16/8 0.060 5/12 0.058 1/18JUN 0.038 0.067 8/16 0.062 9/16 0.059 7/9 0.059 15/13JUL 0.041 0.063 28/8 0.061 27/10 0.061 30/8 0.059 21/8AUG 0.046 0.060 10/21 0.060 20/13 0.060 27/22 0.059 7/9SEP 0.041 0.060 7/13 0.059 4/8 0.057 26/9 0.055 27/9OCT 0.032 0.056 1/9 0.055 2/8 0.046 28/9 0.044 29/8NOV 0.032 0.051 18/18 0.048 17/23 0.046 6/23 0.044 6/9DEC 0.031 0.047 8/1 0.044 18/21 0.044 25/9 0.043 5/23ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.038 0.067 Jun 8/16 0.063 Jul 28/8 0.052 May 2/8 0.062 Jun 9/16* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-14Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.022 0.044 22/8 0.043 13/9 0.042 1/7 0.042 18/17FEB 0.025 0.047 12/9 0.047 21/9 0.045 28/11 0.044 3/9MAR 0.035 0.060 24/12 0.054 28/23 0.053 31/9 0.051 26/10APR 0.042 0.067 16/4 0.061 25/9 0.060 10/10 0.059 17/9MAY 0.042 0.065 5/9 0.063 16/8 0.062 20/10 0.061 14/10JUN 0.041 0.072 8/11 0.066 7/10 0.063 9/15 0.063 23/11JUL 0.043 0.069 27/9 0.066 28/9 0.066 30/8 0.063 23/9AUG 0.046 0.070 20/10 0.067 5/8 0.066 9/9 0.065 6/7SEP 0.035 0.066 26/10 0.062 25/10 0.061 29/9 0.060 3/14OCT 0.027 0.061 2/8 0.058 1/9 0.046 9/10 0.046 29/10NOV 0.025 0.052 18/9 0.048 6/19 0.045 19/0 0.043 5/10DEC 0.025 0.045 18/23 0.043 8/7 0.043 9/4 0.043 19/12ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.034 0.072 Jun 8/11 0.070 Aug 20/10 0.069 Jul 27/9 0.067 Apr 16/4* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-15Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.014 0.042 20/19 0.041 13/8 0.040 19/7 0.038 12/23FEB 0.019 0.042 12/10 0.041 21/9 0.041 28/10 0.039 4/20MAR 0.031 0.061 24/19 0.055 29/1 0.053 28/15 0.053 30/14APR 0.038 0.061 16/7 0.061 25/10 0.059 10/11 0.057 18/10MAY 0.040 0.063 20/11 0.062 16/9 0.061 5/9 0.060 2/9JUN 0.038 0.067 8/11 0.065 7/10 0.061 15/15 0.061 23/10JUL 0.042 0.067 27/9 0.066 22/10 0.065 19/8 0.064 28/9AUG 0.044 0.071 5/9 0.069 8/9 0.067 20/10 0.065 1/9SEP 0.033 0.064 26/10 0.059 3/12 0.057 4/9 0.056 7/11OCT 0.022 0.058 2/8 0.056 1/12 0.043 6/10 0.042 9/10NOV 0.019 0.047 18/12 0.044 6/11 0.044 17/23 0.042 7/2DEC 0.017 0.043 18/23 0.040 19/13 0.040 26/9 0.039 28/18ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.030 0.071 Aug 5/9 0.069 Aug 8/9 0.067 Jun 8/11 0.067 Jul 27/9* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-16Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.015 0.045 20/23 0.043 19/22 0.042 17/12 0.041 18/18FEB 0.019 0.043 12/11 0.042 28/10 0.040 15/10 0.040 21/8MAR 0.031 0.059 24/13 0.054 28/18 0.054 29/2 0.050 30/8APR 0.038 0.063 25/10 0.062 10/11 0.061 16/9 0.059 14/11MAY 0.040 0.064 16/9 0.064 20/10 0.062 5/10 0.060 2/9JUN 0.038 0.069 8/11 0.066 7/10 0.064 23/11 0.062 29/8JUL 0.040 0.068 22/10 0.064 23/10 0.064 27/10 0.062 19/10AUG 0.039 0.068 5/9 0.067 20/10 0.065 4/9 0.064 6/8SEP 0.030 0.062 26/10 0.056 3/10 0.056 4/9 0.055 7/13OCT 0.021 0.057 2/9 0.056 1/10 0.043 6/9 0.042 9/10NOV 0.020 0.049 18/10 0.046 17/23 0.044 19/0 0.043 7/3DEC 0.019 0.043 18/23 0.040 26/6 0.040 28/19 0.039 19/12ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.029 0.069 Jun 8/11 0.068 Jul 22/10 0.068 Aug 5/9 0.067 Aug 20/10* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-17Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.014 0.039 18/19 0.039 19/8 0.037 13/9 0.037 17/11FEB 0.019 0.045 21/8 0.042 12/10 0.042 28/11 0.041 15/11MAR 0.029 0.059 24/13 0.053 28/10 0.050 30/11 0.049 23/8APR 0.037 0.064 25/10 0.062 16/8 0.061 10/11 0.058 17/10MAY 0.038 0.064 20/11 0.063 16/9 0.061 5/9 0.061 14/10JUN 0.036 0.069 8/11 0.065 7/10 0.063 23/10 0.062 24/8JUL 0.038 0.069 28/9 0.068 27/9 0.067 22/10 0.066 30/9AUG 0.038 0.073 5/9 0.068 8/8 0.068 15/8 0.068 20/10SEP 0.027 0.064 26/10 0.059 4/9 0.058 3/11 0.058 25/10OCT 0.019 0.055 1/11 0.055 2/9 0.043 6/9 0.043 9/10NOV 0.019 0.050 18/17 0.044 6/11 0.044 19/1 0.042 22/21DEC 0.017 0.041 26/9 0.039 19/13 0.039 28/16 0.038 18/23ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.028 0.073 Aug 5/9 0.069 Jun 8/11 0.069 Jul 28/9 0.068 Jul 27/9* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-18Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.021 0.046 20/20 0.044 19/19 0.043 17/9 0.043 18/16FEB 0.025 0.044 12/9 0.043 4/18 0.042 21/9 0.041 5/9MAR 0.035 0.058 24/13 0.053 29/2 0.052 28/9 0.052 30/12APR 0.040 0.060 10/10 0.060 16/9 0.060 25/10 0.056 14/10MAY 0.041 0.062 16/9 0.060 5/11 0.060 20/11 0.059 14/10JUN 0.038 0.068 8/11 0.063 9/16 0.062 23/9 0.060 15/13JUL 0.044 0.070 22/10 0.070 27/10 0.070 28/9 0.067 21/9AUG 0.047 0.077 20/11 0.074 5/9 0.069 4/9 0.069 6/9SEP 0.040 0.067 16/10 0.065 7/15 0.062 14/10 0.062 15/10OCT 0.028 0.060 1/10 0.058 2/9 0.043 6/9 0.043 12/11NOV 0.024 0.051 18/14 0.048 17/20 0.046 6/23 0.051 18/14DEC 0.023 0.044 18/22 0.042 8/6 0.041 25/22 0.041 26/6ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.034 0.077 Aug 20/11 0.074 Aug 5/9 0.070 Jul 22/10 0.070 Jul 27/10* Hour Beginning2010 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES10-19Location: Reno3 (designated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 12.9 38.8 5th 16.3 8th 15.6 2nd 14.1 29thFEB 7.5 15.0* 1st 9.9 4th 8.7* 28th 8.5 13thMAR 4.6 11.1 24th 6.0 21st 5.6 12th 6.0 21stAPR 5.0 8.6 11th 7.7 26th 6.7 17th 6.4 8thMAY 3.3 5.5 5th 5.4 20th 4.7 14th 4.0 17thJUN 3.6 6.5 28th 5.0 25th 4.5 22nd 4.4 19thJUL 4.9 6.7 22nd 6.3 16th 5.5 10th 5.2 13thAUG 5.2 6.8 24th 6.7 6th 5.8 9th 5.7 3rdSEP 4.6 8.1 29th 6.6 26th 5.5 14th 5.0 17thOCT 5.4 7.9 2nd 7.4 14th 7.0 8th 6.6 29thNOV 6.5 15.8 25th 14.6 13th 8.4 16th 7.9 4thDEC 8.8 24.4 1st 15.0 22nd 11.4 13th 10.9 28thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY6.00 38.8 Jan 5th 24.4 Dec 1st 16.3 Jan 8th 15.8 Nov 25thHour Beginning* Designated Sampler Equipment Malfunction, Used Collocated Sample Value In Place of Missing Samples.2010 ANNUAL SUMMARYPM2.5(g/m3)- 24 HOUR AVERAGES10-20Location: Reno3 (collocated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 12.7 38.6 5th 16.2 8th 15.2 2nd 13.9 11thFEB 7.5 15.0 22nd 10* 4th 8.7* 28th 8.5* 13thMAR 4.5 11.2 24th 6.2 21st 5.6 12th 4.6 18thAPR 4.9 8.3 11th 7.5 26th 6.8 17th 6.4 8thMAY 3.4 5.9 5th 5.3 20th 4.5 14th 4.0 8thJUN 3.5 6.3 28th 4.7 25th 4.5 19th 4.5 22ndJUL 5.0 7.0 25th 6.4 22nd 6.3 16th 5.3 10thAUG 5.1 6.5 6th 6.4 24th 5.7 9th 5.5 3rdSEP 4.6 8.1 29th 6.6 26th 5.5 14th 5.0 17thOCT 5.4 7.9 2nd 7.4 14th 7.0 8th 6.5 29thNOV 6.6 16.1 25th 14.6 13th 8.7 16th 7.8 4thDEC 8.9 24.6 1st 15.2 22nd 11.6 13th 10.9 28thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY6.1 38.6 Jan 5th 24.6 Dec 1st 16.2 Jan 8th 16.1 Nov 25thHour Beginning* These values were used to replace missing designated runs2010 ANNUAL SUMMARYPM2.5(g/m3)- 24 HOUR AVERAGES10-21Location: GallettiMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 40 67 14th 54 2nd 40 8th 21 20thFEB 48 76 1st 66 13th 49 19th 37 25thMAR 50 74 3rd 65 21st 51 15th 37 9thAPR 56 87 20th 53 8th 52 2nd 46 14thMAY 22 32 14th 28 20th 24 8th 15 26thJUN 23 29 25th 28 7th 26 19th 18 1stJUL 38 50 25th 43 1st 38 13th 35 7thAUG 35 51 18th 44 24th 36 6th 25 12thSEP 39 63 29th 50 17th 34 23rd 27 11thOCT 20 34 29th 29 11th 14 5th 12 17thNOV 31 65 4th 43 16th 17 22nd 16 28thDEC 29 49 22nd 44 28th 22 16th 17 4thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY36 87 Apr 20th 76 Feb 1st 74 Mar 3rd 67 Jan 14th* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-22Location: PlumbkitMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 41 77 2nd 52 14th 47 8th 16 20thFEB 39 55 1st 52 13th 37 19th 37 25thMAR 19 35 21st 28 3rd 23 27th 22 15thAPR 21 26 8th 23 2nd 18 20th 17 14thMAY 11 17 14th 13 8th 10 20th 8 2ndJUN 14 15 1st 15 25th 14 19th 11 13thJUL 18 22 13th 20 7th 20 25th 17 31stAUG 20 24 24th 22 6th 21 18th 17 12thSEP 22 35 29th 23 17th 21 23rd 19 11thOCT 13 24 29th 15 11th 10 5th 9 17thNOV 21 38 4th 28 16th 16 28th 13 22ndDEC 27 44 22nd 40 28th 21 4th 18 16thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY23 77 Jan 2nd 55 Feb 1st 52 Jan 14th 52 Feb 13th* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-23Location: Reno3MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 48 142 5th 72 29th 52 2nd 50 11thFEB 31 55 4th 42 1st 38 13th 36 25thMAR 19 42 24th 32 12th 24 18th 19 15thAPR 14 22 8th 20 11th 20 26th 18 17thMAY 10 19 5th 12 8th 12 14th 11 17thJUN 10 19 28th 13 19th 12 22nd 12 25thJUL 16 23 16th 21 1st 21 22nd 17 10thAUG 16 22 24th 19 21st 18 6th 17 27thSEP 15 28 29th 18 26th 17 2nd 17 14thOCT 14 25 2nd 20 14th 17 29th 16 20thNOV 16 30 25th 27 13th 25 4th 21 16thDEC 27 77 1st 40 28th 39 13th 36 22ndANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY20 142 Jan 5th 77 Dec 1st 72 Jan 29th 55 Feb 4th* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-24Location: South RenoMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 23 36 8th 34 2nd 29 14th 10 26thFEB 26 52 1st 25 13th 23 19th 22 25thMAR 14 26 21st 18 15th 14 27th 7 3rdAPR 12 16 8th 12 14th 11 2nd 10 20thMAY 10 15 14th 11 8th 9 20th 8 2ndJUN 17 35 30th 17 24th 16 18th 13 12thJUL 18 21 7th 20 19th 18 13th 18 25thAUG 21 30 24th 22 6th 20 12th 19 18thSEP 20 27 29th 20 17th 19 11th 19 23rdOCT 12 21 29th 15 11th 10 5th 8 17thNOV 16 26 4th 24 28th 18 16th 7 10thDEC 18 29 22nd 29 28th 15 16th 13 4thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY17 52 Feb 1st 36 Jan 8th 35 Jun 30th 34 Jan 2nd* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-25Location: Sparks (designated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 26 43 14th 40 2nd 27 8th 11 20thFEB 31 46 1st 46 13th 29 19th 22 25thMAR 21 34 15th 27 21st 18 3rd 17 27thAPR 20 27 26th 21 8th 19 2nd 19 20thMAY 13 21 14th 15 8th 12 20th 9 2ndJUN 13 17 25th 15 13th 13 19th 11 1stJUL 19 24 25th 22 7th 19 19th 18 1stAUG 20 28 24th 25 6th 20 18th 18 12thSEP 27 42 29th 30 17th 24 23rd 22 11thOCT 15 25 29th 17 11th 11 17th 10 5thNOV 22 37 4th 33 16th 24 28th 10 10thDEC 23 55 22nd 27 28th 12 4th 12 16thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY21 55 Dec 22nd 46 Feb 1st 46 Feb 13th 43 Jan 14th* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-26Location: Sparks (collocated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 26 43 14th 39 2nd 28 8th 12 20thFEB 32 48 1st 47 13th 29 19th 13 25thMAR 21 35 15th 27 21st 17 3rd 17 27thAPR 21 27 26th 21 8th 19 2nd 19 20thMAY 13 21 14th 14 8th 13 20th 10 2ndJUN 14 16 25th 15 13th 15 19th 11 1stJUL 20 24 7th 23 25th 21 13th 18 19thAUG 20 29 24th 23 6th 19 12th 18 18thSEP 28 44 29th 31 17th 25 23rd 22 11thOCT 16 27 29th 18 11th 12 17th 11 5thNOV 23 35 4th 34 16th 26 28th 12 22ndDEC 22 54 22nd 26 28th 12 16th 11 4thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY21 54 Dec 22nd 48 Feb 1st 47 Feb 13th 44 Sept 29th* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-27Location: TollMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 18 30 2nd 30 8th 15 14th 10 26thFEB 20 32 1st 23 19th 19 13th 18 25thMAR 16 33 21st 13 3rd 12 15th 11 27thAPR 14 17 8th 13 2nd 13 14th 10 20thMAY 9 14 14th 11 8th 9 20th 6 2ndJUN 15 19 19th 19 25th 15 7th 14 13thJUL 22 26 7th 26 19th 24 1st 21 13thAUG 23 26 6th 26 24th 24 18th 23 12thSEP 23 34 29th 27 17th 22 23rd 18 11thOCT 12 18 11th 14 29th 10 23rd 9 5thNOV 14 28 4th 22 16th 9 28th 7 22ndDEC 13 22 28th 15 16th 14 22nd 8 10thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY17 34 Sept 29th 33 Mar 21st 32 Feb 1st 30 Jan 2nd* Hour Beginning2010 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES10-28Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.027 0.076 6/9 0.075 5/11 0.057 4/11 0.053 2/11FEB 0.022 0.058 23/9 0.052 22/19 0.050 4/11 0.050 12/8MAR 0.015 0.049 12/8 0.045 23/5 0.044 10/21 0.043 15/19APR 0.013 0.048 13/6 0.045 7/7 0.044 8/7 0.044 22/22MAY 0.010 0.044 6/23 0.042 7/0 0.041 21/6 0.037 13/21JUN 0.008 0.034 30/7 0.031 15/6 0.030 19/6 0.029 14/6JUL 0.010 0.039 13/6 0.039 21/5 0.039 21/5 0.034 16/5AUG 0.012 0.053 26/7 0.046 23/21 0.045 18/0 0.044 24/19SEP 0.016 0.055 24/18 0.053 27/18 0.052 29/18 0.049 4/2OCT 0.018 0.049 28/19 0.046 13/18 0.045 1/2 0.045 29/18NOV 0.022 0.056 17/16 0.053 26/18 0.051 4/16 0.051 5/19DEC 0.022 0.081 1/11 0.057 13/12 0.049 23/10 0.047 2/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.016 0.081 Dec 1/11 0.076 Jan 6/9 0.075 Jan 5/11 0.058 Feb 23/9* Hour Beginning2010 ANNUAL SUMMARYNO2 (ppm) - HOURLY AVERAGES10-29Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.032 0.303 6/9 0.270 5/8 0.213 4/8 0.170 15/21FEB 0.015 0.139 3/7 0.138 4/7 0.135 23/9 0.126 12/8MAR 0.006 0.105 12/8 0.063 16/7 0.050 23/7 0.049 14/0APR 0.005 0.121 8/7 0.081 7/7 0.078 23/8 0.067 24/7MAY 0.003 0.057 3/6 0.047 13/7 0.042 7/7 0.038 21/6JUN 0.003 0.046 6/6 0.036 30/7 0.033 14/6 0.021 2/7JUL 0.003 0.064 13/6 0.048 21/5 0.027 16/5 0.021 12/8AUG 0.003 0.055 26/7 0.049 23/21 0.039 27/7 0.032 18/8SEP 0.005 0.060 2/8 0.052 24/19 0.048 20/7 0.048 29/6OCT 0.010 0.143 21/7 0.138 22/7 0.124 19/8 0.099 27/7NOV 0.020 0.163 17/20 0.159 12/8 0.124 30/22 0.120 14/22DEC 0.022 0.247 1/9 0.208 23/7 0.171 2/8 0.153 13/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.011 0.303 Jan 6/9 0.270 Jan 5/8 0.247 Dec 1/9 0.213 Jan 4/8* Hour Beginning2010 ANNUAL SUMMARYNO (ppm) - HOURLY AVERAGES10-30Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.059 0.379 6/9 0.329 5/8 0.263 4/8 0.211 15/21FEB 0.037 0.194 23/9 0.182 3/7 0.179 4/7 0.176 12/8MAR 0.021 0.154 12/8 0.094 16/7 0.091 14/0 0.089 23/7APR 0.018 0.165 8/7 0.126 7/7 0.119 23/8 0.103 13/6MAY 0.012 0.090 3/5 0.083 13/7 0.080 21/6 0.059 12/7JUN 0.011 0.070 30/7 0.067 6/6 0.062 14/6 0.050 15/6JUL 0.013 0.103 13/6 0.086 21/5 0.061 16/5 0.051 31/7AUG 0.015 0.108 26/7 0.094 23/21 0.083 27/8 0.073 18/8SEP 0.020 0.106 24/19 0.100 2/8 0.083 14/7 0.082 29/6OCT 0.027 0.182 21/7 0.178 22/7 0.163 19/8 0.135 27/7NOV 0.043 0.216 17/20 0.201 12/8 0.172 30/22 0.159 14/19DEC 0.044 0.312 1/9 0.247 23/7 0.218 2/8 0.206 13/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.027 0.379 Jan 6/9 0.329 Jan 5/8 0.312 Dec 1/9 0.263 Jan 4/8* Hour Beginning2010 ANNUAL SUMMARYNOx (ppm) - HOURLY AVERAGES10-31

## Washoe County

Ambient Air Monitoring Data

(2009)Pollutant Averaging Period Exceedance Dates

PM 10 24-hour none

PM 2.5 24-hour Dec 9, 15, and 18.

O 3 8-hour none

1-hour none

8-hour none

NO 2 1-hour none

1-hour

24-hour

3-hour

3-month

quarterly Pb n/a - Pb was not monitored in 2009. 

## Exceedances (2009)

CO

SO 2 n/a - SO 2 was not monitored in 2009.

09-1Location: GallettiMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.8 2.6 1/8 2.3 11/6 1.9 14/9 1.9 15/1FEB 0.4 1.7 1/2 1.4 4/10 1.3 5/8 1.3 3/8MAR 0.3 1.1 8/5 1.1 14/7 1.0 12/8 1.0 13/8APR 0.2 0.6 7/8 0.6 19/3 0.6 17/6 0.6 22/7MAY 0.1 0.5 18/8 0.3 16/4 0.3 4/7 0.3 9/4JUN 0.2 0.5 23/7 0.4 24/9 0.4 28/3 0.4 30/8JUL 0.2 0.5 1/7 0.5 7/7 0.4 2/9 0.4 14/8AUG 0.2 0.7 26/9 0.7 20/9 0.7 31/8 0.6 9/3SEP 0.4 1.2 27/2 1.1 26/2 1.1 28/9 1.0 25/2OCT 0.4 1.3 8/8 1.1 11/7 1.1 22/6 1.0 9/3NOV 0.5 1.8 17/8 1.3 1/7 1.3 27/1 1.3 20/1DEC 0.7 1.9 19/3 1.8 18/3 1.7 1/8 1.6 14/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.4 2.6 Jan 1/8 2.3 Jan 11/6 1.9 Jan 14/9 1.9 Jan 15/1* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-2Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.6 1.5 11/2 1.4 14/1 1.4 15/1 1.3 1/1FEB 0.4 1.2 5/1 1.1 4/8 1.0 21/3 1.0 2/8MAR 0.3 0.9 12/7 0.8 11/7 0.8 8/6 0.8 13/6APR 0.2 0.6 6/6 0.6 4/6 0.6 7/6 0.5 5/6MAY 0.1 0.3 17/3 0.3 9/5 0.3 16/2 0.2 27/11JUN 0.1 0.3 24/5 0.3 29/6 0.2 30/10 0.2 25/11JUL 0.2 0.3 22/11 0.3 17/9 0.3 14/5 0.3 16/11AUG 0.2 0.5 12/7 0.4 9/3 0.4 20/9 0.4 17/7SEP 0.2 0.4 26/2 0.4 28/2 0.3 22/7 0.3 27/2OCT 0.3 0.9 29/2 0.8 31/2 0.6 26/8 0.6 30/7NOV 0.5 1.1 25/7 1.1 30/3 1.1 26/2 1.0 19/8DEC 0.7 1.7 10/0 1.5 9/9 1.3 18/9 1.2 24/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.3 1.7 Dec 10/0 1.5 Jan 11/2 1.5 Dec 9/9 1.4 Jan 14/1* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-3Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.4 2.2 1/7 1.6 28/1 1.5 11/8 1.4 14/13FEB 0.2 0.6 5/11 0.6 4/12 0.5 1/1 0.5 20/11MAR 0.1 0.7 14/9 0.6 8/5 0.4 25/11 0.4 31/10APR 0.1 0.2 11/7 0.2 19/0 0.2 17/23 0.2 30/8MAY 0.1 0.2 4/8 0.2 18/8 0.2 1/7 0.1 7/6JUN 0.1 0.1 9/11 0.1 17/10 0.1 1/8 0.1 3/8JUL 0.1 0.1 29/9 0.1 14/14 0.1 2/13 0.1 31/9AUG 0.1 0.3 8/1 0.3 9/1 0.3 17/3 0.2 14/7SEP 0.1 0.5 28/10 0.4 27/0 0.4 13/7 0.3 25/22OCT 0.1 0.7 24/0 0.6 11/7 0.5 12/10 0.4 9/1NOV 0.2 1.2 27/1 1.0 17/9 0.7 29/7 0.7 24/23DEC 0.6 2.1 15/14 2.0 17/0 1.8 9/13 1.8 14/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.2 2.2 Jan 1/7 2.1 Dec 15/14 2.0 Dec 17/0 1.8 Dec 9/13* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-4Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.7 1.5 21/22 1.5 23/0 1.4 22/10 1.3 12/11FEB 0.4 0.9 5/10 0.9 8/7 0.8 6/4 0.8 4/10MAR 0.2 0.5 31/10 0.5 24/8 0.5 27/8 0.4 25/10APR 0.3 0.5 22/8 0.5 5/7 0.5 7/10 0.5 13/9MAY 0.3 0.5 30/2 0.5 18/9 0.5 27/9 0.4 4/10JUN 0.4 0.6 4/1 0.5 9/8 0.5 17/8 0.5 19/6JUL 0.3 0.5 16/8 0.5 1/1 0.5 17/9 0.5 20/7AUG 0.2 0.4 17/7 0.3 9/2 0.3 10/10 0.3 4/8SEP 0.2 0.5 28/11 0.5 27/0 0.4 25/23 0.3 22/10OCT 0.3 0.6 30/8 0.6 26/12 0.6 22/8 0.5 23/10NOV 0.4 1.0 17/7 1.0 27/2 0.9 20/2 0.8 5/8DEC 0.8 1.6 15/11 1.5 10/12 1.4 18/10 1.3 17/21ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.4 1.6 Dec 15/11 1.5 Jan 21/22 1.5 Jan 23/0 1.5 Dec 10/12* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-5Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 1.0 3.3 1/1 2.9 11/3 2.5 15/0 2.4 14/0FEB 0.6 2.2 1/4 2.1 5/1 1.8 3/9 1.7 2/6MAR 0.4 1.6 13/10 1.4 11/9 1.4 12/8 1.3 8/4APR 0.3 1.0 6/8 0.9 7/8 0.9 17/7 0.8 5/6MAY 0.2 0.7 17/2 0.5 9/5 0.5 27/7 0.4 6/6JUN 0.2 0.6 24/6 0.5 28/3 0.4 29/7 0.4 23/7JUL 0.2 0.5 30/2 0.5 1/6 0.5 31/8 0.5 14/3AUG 0.3 1.1 9/3 0.7 20/8 0.7 17/7 0.7 19/8SEP 0.4 1.3 27/1 1.1 26/1 1.0 12/1 1.0 23/9OCT 0.5 1.7 31/1 1.6 24/1 1.4 29/7 1.2 26/8NOV 0.8 2.2 26/4 2.2 30/23 2.0 17/8 2.2 26/4DEC 0.9 2.4 1/1 2.1 2/2 2.1 10/1 2.0 18/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.5 3.3 Jan 1/1 2.9 Jan 11/3 2.5 Jan 15/0 2.4 Jan 14/0* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-6Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.6 1.2 22/23 1.0 28/11 1.0 16/13 1.0 21/13FEB 0.6 1.5 3/7 1.4 4/7 1.3 6/7 1.2 12/6MAR 0.2 0.5 1/3 0.4 31/11 0.4 11/11 0.4 12/10APR 0.4 0.7 20/9 0.7 30/8 0.7 16/10 0.7 17/11MAY 0.4 0.7 1/9 0.6 14/23 0.6 15/8 0.6 3/14JUN 0.3 0.5 15/22 0.5 9/7 0.5 17/7 0.5 6/22JUL 0.3 0.7 23/22 0.5 18/3 0.5 15/11 0.5 11/23AUG 0.4 0.6 17/12 0.5 20/12 0.5 10/10 0.5 8/1SEP 0.4 0.8 26/14 0.7 28/9 0.7 25/12 0.7 10/11OCT 0.2 0.6 9/10 0.5 12/11 0.5 5/11 0.5 2/11NOV 0.2 0.6 26/23 0.5 16/23 0.5 11/7 0.5 16/23DEC 0.6 1.3 15/10 1.2 10/12 1.2 11/4 1.1 15/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.4 1.5 Feb 3/7 1.4 Feb 4/7 1.3 Feb 6/7 1.3 Dec 15/10* Hour Beginning2009 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES09-7Location: InclineMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.028 0.048 27/14 0.045 5/18 0.045 11/13 0.044 13/13FEB 0.034 0.052 27/13 0.049 13/4 0.049 26/22 0.048 15/8MAR 0.041 0.069 29/8 0.065 26/21 0.062 7/14 0.061 10/15APR 0.045 0.071 22/21 0.066 3/14 0.066 16/15 0.063 17/14MAY 0.040 0.067 12/17 0.062 23/17 0.062 24/9 0.060 10/13JUN 0.038 0.070 24/17 0.068 26/9 0.063 28/14 0.063 29/12JUL 0.042 0.066 11/12 0.061 10/10 0.060 2/18 0.059 17/11AUG 0.042 0.073 12/13 0.072 11/15 0.068 23/2 0.066 28/13SEP 0.040 0.067 19/18 0.063 29/1 0.062 13/10 0.061 20/0OCT 0.032 0.058 12/9 0.054 3/17 0.052 2/17 0.061 8/13NOV 0.035 0.053 20/3 0.053 21/14 0.052 9/23 0.052 11/10DEC 0.033 0.050 24/22 0.050 25/13 0.048 6/20 0.047 9/12ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.025 0.073 Aug 12/13 0.072 Aug 11/15 0.071 Apr 22/21 0.070 Jun 24/17* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-8Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.017 0.044 11/13 0.044 31/14 0.043 28/13 0.042 2/13FEB 0.030 0.055 24/12 0.051 26/22 0.051 27/14 0.050 20/15MAR 0.037 0.071 26/16 0.064 27/13 0.06 17/12 0.059 30/15APR 0.039 0.071 22/21 0.062 6/13 0.062 28/11 0.062 30/11MAY 0.041 0.074 24/8 0.069 12/11 0.065 23/22 0.064 16/16JUN 0.038 0.068 25/10 0.068 30/11 0.066 27/14 0.066 29/9JUL 0.042 0.069 10/11 0.069 24/11 0.067 16/10 0.066 17/9AUG 0.039 0.076 11/20 0.072 28/15 0.068 10/13 0.068 27/13SEP 0.031 0.066 17/13 0.064 19/8 0.062 16/14 0.059 9/14OCT 0.024 0.052 12/11 0.051 3/11 0.049 2/15 0.048 7/15NOV 0.023 0.052 11/13 0.050 20/9 0.048 9/14 0.048 17/20DEC 0.020 0.051 8/14 0.045 15/13 0.044 31/23 0.043 22/9ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.032 0.076 Aug 11/20 0.074 May 24/8 0.072 Aug 28/15 0.071 Mar 26/16* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-9Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.010 0.039 28/14 0.038 25/3 0.037 2/13 0.037 12-MarFEB 0.023 0.048 27/13 0.047 22/2 0.047 24/12 0.046 15/11MAR 0.032 0.066 26/17 0.054 17/12 0.053 7/12 0.053 22/8APR 0.038 0.071 22/21 0.062 23/0 0.061 6/14 0.060 16/14MAY 0.040 0.068 12/12 0.067 24/9 0.065 11/23 0.065 25/12JUN 0.037 0.072 29/11 0.070 25/11 0.070 26/12 0.070 27/15JUL 0.042 0.076 27/14 0.074 17/13 0.073 15/11 0.073 30/13AUG 0.039 0.076 11/19 0.075 2/10 0.074 28/12 0.072 12/13SEP 0.029 0.069 17/15 0.066 16/15 0.062 19/9 0.061 10/16OCT 0.020 0.052 3/13 0.051 12/12 0.049 2/16 0.049 22/15NOV 0.017 0.051 20/10 0.050 11/13 0.047 18/0 0.046 17/23DEC 0.009 0.041 5/1 0.041 22/2 0.040 30/3 0.038 4/23ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.028 0.076 Jul 27/14 0.076 Aug 11/19 0.075 Aug 2/10 0.074 Jul 17/13* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-10Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.010 0.038 2/13 0.037 3/13 0.037 28/13 0.037 31/15FEB 0.023 0.051 27/13 0.049 26/13 0.048 24/8 0.047 25/12MAR 0.031 0.068 26/17 0.058 27/13 0.057 7/13 0.056 17/13APR 0.037 0.065 16/14 0.065 22/21 0.063 17/12 0.062 6/13MAY 0.037 0.065 12/13 0.064 24/9 0.062 26/15 0.060 16/17JUN 0.033 0.069 26/13 0.069 27/16 0.069 29/11 0.068 18/14JUL 0.036 0.072 15/12 0.072 27/15 0.071 17/11 0.069 16/12AUG 0.033 0.074 12/14 0.069 11/19 0.066 2/12 0.066 3/12SEP 0.027 0.070 17/15 0.065 16/16 0.060 18/14 0.060 19/9OCT 0.020 0.055 12/12 0.051 3/10 0.050 17/13 0.049 2/17NOV 0.016 0.053 20/12 0.051 11/13 0.048 17/20 0.048 18/0DEC 0.008 0.039 22/2 0.038 5/11 0.038 30/4 0.036 6/16ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.026 0.074 Aug 12/14 0.072 Jul 15/12 0.072 Jul 27/15 0.071 Jul 17/11* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-11Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.010 0.039 25/3 0.039 28/15 0.038 31/15 0.037 3/14FEB 0.021 0.049 24/12 0.048 26/21 0.048 27/14 0.047 22/13MAR 0.030 0.069 26/16 0.057 28/13 0.057 30/16 0.055 13-JulAPR 0.036 0.072 22/21 0.063 16/14 0.062 6/14 0.061 30/11MAY 0.036 0.070 24/9 0.068 12/13 0.066 16/17 0.066 23/10JUN 0.035 0.073 26/12 0.073 29/11 0.072 25/11 0.070 18/13JUL 0.036 0.072 15/12 0.071 27/14 0.071 30/14 0.070 17/13AUG 0.033 0.076 2/11 0.076 12/14 0.074 11/21 0.068 3/12SEP 0.025 0.068 16/15 0.068 17/15 0.062 19/9 0.061 18/14OCT 0.019 0.053 12/12 0.051 3/10 0.050 7/15 0.050 8/13NOV 0.016 0.051 11/13 0.049 20/12 0.047 18/0 0.046 17/23DEC 0.010 0.041 22/2 0.040 5/2 0.039 30/4 0.036 25/14ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.026 0.076 Aug 2/11 0.076 Aug 12/14 0.074 Aug 11/21 0.073 Jun 26/12* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-12Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.016 0.039 2/13 0.039 24/21 0.038 25/2 0.038 31/14FEB 0.029 0.050 26/23 0.049 22/1 0.049 24/11 0.048 21/15MAR 0.035 0.070 26/17 0.062 29/5 0.060 27/13 0.060 28/12APR 0.043 0.076 22/21 0.066 16/14 0.064 6/16 0.064 28/13MAY 0.043 0.071 12/13 0.069 24/9 0.065 26/15 0.064 19/8JUN 0.036 0.067 26/12 0.066 18/15 0.065 27/16 0.064 25/10JUL 0.040 0.069 16/11 0.066 27/15 0.065 13/13 0.064 15/11AUG 0.037 0.075 12/13 0.071 11/18 0.069 28/15 0.065 2/13SEP 0.034 0.066 17/15 0.065 19/7 0.061 18/21 0.059 29/1OCT 0.026 0.051 3/9 0.049 12/18 0.047 2/14 0.047 8/12NOV 0.024 0.053 20/12 0.052 11/12 0.048 18/1 0.047 9/14DEC 0.015 0.044 13/2 0.043 30/01 0.042 15/12 0.042 29/21ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.031 0.076 Apr 22/21 0.075 Aug 12/13 0.071 May 12/13 0.071 Aug 11/18* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES09-13Location: InclineMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.027 0.042 5/12 0.041 27/9 0.038 2/23 0.038 28/19FEB 0.033 0.049 27/9 0.046 15/3 0.045 26/16 0.044 13/1MAR 0.041 0.060 29/7 0.059 26/15 0.058 7/9 0.055 10/9APR 0.044 0.061 22/15 0.060 16/10 0.060 17/10 0.059 3/8MAY 0.040 0.062 12/11 0.058 23/10 0.058 24/8 0.057 19/7JUN 0.038 0.063 24/12 0.062 26/8 0.060 29/9 0.059 28/10JUL 0.041 0.059 10/8 0.059 11/8 0.055 7/20 0.055 9/9AUG 0.041 0.068 11/11 0.064 12/7 0.060 22/23 0.060 28/10SEP 0.040 0.064 19/16 0.060 19/5 0.056 20/8 0.055 13/8OCT 0.032 0.052 3/10 0.051 12/8 0.049 12/16 0.048 2/23NOV 0.034 0.051 11/9 0.049 9/19 0.049 20/2 0.048 10/13DEC 0.033 0.048 25/8 0.046 24/18 0.045 15/20 0.044 22/16ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.037 0.068 Aug 11/11 0.064 Aug 12/7 0.064 Sep 19/16 0.063 Jun 24/12* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-14Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.016 0.039 28/10 0.038 2/7 0.037 3/10 0.037 5/9FEB 0.029 0.051 24/6 0.048 26/9 0.048 27/10 0.046 20/11MAR 0.036 0.063 26/11 0.057 27/9 0.056 17/9 0.054 7/10APR 0.039 0.064 22/16 0.060 28/10 0.059 6/10 0.058 29/11MAY 0.040 0.066 12/9 0.065 24/7 0.059 11/11 0.059 23/16JUN 0.038 0.063 29/8 0.062 24/10 0.062 25/7 0.060 27/11JUL 0.041 0.065 10/9 0.062 17/8 0.060 24/8 0.059 9/8AUG 0.038 0.072 11/14 0.065 28/10 0.064 27/9 0.062 10/9SEP 0.031 0.059 19/7 0.057 17/9 0.056 18/14 0.056 19/15OCT 0.024 0.050 3/8 0.049 12/9 0.048 12/17 0.046 2/11NOV 0.022 0.048 11/9 0.048 20/5 0.046 17/17 0.042 6/7DEC 0.019 0.043 15/8 0.042 22/4 0.041 31/17 0.040 8/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.031 0.072 Aug 11/14 0.066 May 12/9 0.065 May 24/7 0.065 Aug 28/10* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-15Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.009 0.035 24/23 0.035 28/9 0.033 2/8 0.033 3/10FEB 0.023 0.045 27/8 0.044 24/9 0.043 26/7 0.042 15/9MAR 0.031 0.056 26/11 0.051 28/11 0.051 29/8 0.049 30/10APR 0.037 0.065 22/18 0.058 28/9 0.057 6/10 0.056 16/10MAY 0.040 0.064 12/10 0.061 24/8 0.060 16/11 0.060 26/8JUN 0.037 0.062 24/10 0.062 25/8 0.062 29/9 0.061 27/9JUL 0.042 0.065 10/10 0.064 17/9 0.062 27/8 0.061 9/9AUG 0.038 0.073 11/15 0.067 2/9 0.064 28/10 0.062 10/10SEP 0.029 0.058 17/10 0.058 19/9 0.056 16/12 0.055 18/13OCT 0.020 0.049 3/9 0.047 12/11 0.044 11/10 0.042 2/12NOV 0.017 0.048 20/7 0.043 17/19 0.042 11/12 0.039 22/6DEC 0.008 0.039 4/23 0.038 22/0 0.035 22/8 0.034 5/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.028 0.073 Aug 11/15 0.067 Aug 2/9 0.065 Apr 22/18 0.065 Jul 10/10* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-16Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.010 0.035 3/10 0.033 2/6 0.033 24/19 0.031 25/11FEB 0.022 0.047 24/5 0.047 26/7 0.046 27/9 0.044 22/8MAR 0.031 0.058 26/11 0.052 27/10 0.051 14/12 0.051 28/10APR 0.037 0.060 16/11 0.059 6/10 0.058 22/15 0.056 13/9MAY 0.037 0.065 12/13 0.064 24/9 0.062 26/15 0.060 16/17JUN 0.033 0.061 26/10 0.060 29/9 0.059 18/10 0.059 25/9JUL 0.036 0.062 27/10 0.061 17/9 0.059 9/9 0.059 15/9AUG 0.033 0.066 11/14 0.063 2/9 0.061 12/8 0.060 28/10SEP 0.026 0.061 17/9 0.058 19/9 0.056 16/11 0.054 18/11OCT 0.020 0.049 3/9 0.047 12/11 0.045 2/12 0.044 11/10NOV 0.015 0.048 20/5 0.045 17/18 0.041 11/12 0.040 22/8DEC 0.008 0.039 22/2 0.038 5/11 0.038 30/4 0.036 6/16ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.026 0.066 Aug 11/14 0.065 May 12/13 0.063 Aug 2/9 0.062 Jul 24/10* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-17Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.010 0.035 24/23 0.034 3/10 0.031 2/8 0.031 26/9FEB 0.021 0.045 27/10 0.043 26/14 0.042 22/10 0.042 24/6MAR 0.030 0.060 26/11 0.052 28/11 0.052 29/8 0.051 27/10APR 0.036 0.060 16/11 0.060 22/15 0.059 6/10 0.058 28/11MAY 0.035 0.064 12/9 0.063 24/8 0.060 16/11 0.059 23/9JUN 0.034 0.064 25/8 0.063 24/10 0.063 29/9 0.062 26/10JUL 0.035 0.063 17/9 0.061 9/8 0.060 10/8 0.060 15/9AUG 0.033 0.069 11/15 0.068 2/8 0.062 27/10 0.061 12/9SEP 0.024 0.058 17/10 0.058 19/9 0.055 16/10 0.055 18/13OCT 0.018 0.048 3/9 0.045 12/11 0.043 11/11 0.040 2/11NOV 0.015 0.045 20/5 0.038 17/20 0.038 22/9 0.037 7/8DEC 0.009 0.039 22/0 0.037 5/1 0.037 22/8 0.035 5/9ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.025 0.069 Aug 11/15 0.068 Aug 2/8 0.064 May 12/9 0.064 Jun 25/8* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-18Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.016 0.037 24/20 0.035 2/7 0.034 3/9 0.033 8/8FEB 0.029 0.045 21/22 0.044 22/9 0.044 24/4 0.044 26/7MAR 0.035 0.061 26/11 0.054 27/10 0.054 28/10 0.054 29/0APR 0.043 0.067 22/17 0.061 28/9 0.060 6/10 0.060 29/11MAY 0.042 0.067 12/9 0.063 24/7 0.061 19/7 0.060 23/8JUN 0.036 0.061 26/10 0.058 18/11 0.058 25/8 0.058 29/9JUL 0.039 0.061 27/10 0.059 9/9 0.059 13/9 0.058 10/9AUG 0.037 0.075 12/13 0.071 11/18 0.069 28/15 0.065 2/13SEP 0.033 0.061 19/6 0.059 17/10 0.059 19/14 0.055 18/14OCT 0.026 0.050 3/9 0.047 12/13 0.045 2/12 0.044 8/8NOV 0.024 0.049 11/11 0.048 20/6 0.044 17/18 0.043 9/12DEC 0.014 0.038 15/11 0.037 21/9 0.037 22/1 0.036 6/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.031 0.075 Aug 12/13 0.071 Aug 11/18 0.069 Aug 28/15 0.067 Apr 22/17* Hour Beginning2009 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES09-19Location: Reno3 (designated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN13.521.4 1st 19.9 22nd 17.3 28th 15.2 7thFEB5.111.0 3rd 7.7 21st 6.6 18th 4.2 6thMAR4.77.3 14th 6.8 17th 6.2 20th 6.1 11thAPR4.86.1 4th 5.9 7th 5.9 13th 5.4 16thMAY5.47.9 16th 7.2 19th 6.2 22nd 6.2 31stJUN5.46.9 27th 6.6 12th 6.6 30th 6.2 24thJUL5.37.2 30th 6.5 18th 6.3 15th 6.1 9thAUG8.617.9 17th 12.6 8th 11.2 11th 9.2 20thSEP5.38.0 28th 5.9 19th 5.9 16th 5.8 25thOCT5.17.8 31st 7.4 10th 6.9 22nd 5.3 7thNOV8.013.3 30th 12.6 24th 11.7 9th 9.5 3rdDEC22.852.6 9th 41.2 18th 40.5 15th 24.3 24thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY10.20 52.6 Dec 9th 41.2 Dec 18th 40.5 Dec 15th 24.30 Dec 24th* Hour Beginning2009 ANNUAL SUMMARYPM2.5(g/m3)- 24 HOUR AVERAGES09-20Location: Reno3 (collocated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 13.1 21.1 1st 19.4 22nd 15.1 31st 14.8 16thFEB 6.0 16.8 3rd 7.9 21st 6.5 18th 5.5 15thMAR 4.7 7.3 14th 6.9 17th 6.2 20th 5.9 8thAPR 4.7 6.0 13th 5.9 4th 5.9 7th 5.5 16thMAY 5.4 8.0 16th 7.0 19th 6.2 22nd 6.2 25thJUN 5.3 7.0 27th 6.8 30th 6.4 12th 6.2 18thJUL 5.2 6.9 30th 6.7 18th 6.3 15th 6.0 3rdAUG 8.8 18.3 17th 13.2 8th 11.7 11th 9.3 20thSEP 5.4 8.6 28th 6.0 10th 6.0 25th 5.9 19thOCT 5.0 7.7 31st 6.8 22nd 6.7 10th 5.5 16thNOV 7.5 13.3 30th 12.6 24th 9.4 3rd 8.8 15thDEC 22.8 53.4 9th 41.1 18th 40.2 15th 24.3 24thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY9.90 53.40 Dec 9th 41.10 Dec 18th 40.20 Dec 15th 24.30 Dec 24th* Hour Beginning2009 ANNUAL SUMMARYPM2.5(g/m3)- 24 HOUR AVERAGES09-21Location: GallettiMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 62 91 7th 88 1st 67 13th 62 31stFEB 30 38 12th 29 24th 23 6th N/AMAR 32 50 14th 48 20th 30 8th 22 26thAPR 29 64 7th 30 13th 22 19th 18 1stMAY 21 45 19th 18 13th 16 5th 16 25thJUN 28 45 30th 32 24th 26 18th 8 6thJUL 22 30 24th 27 30th 23 18th 19 6thAUG 39 50 11th 41 17th 33 5th 31 29thSEP 48 71 28th 50 22nd 42 16th 41 10thOCT 23 32 10th 31 22nd 24 16th 19 28thNOV 29 45 3rd 44 9th 21 15th 20 21stDEC 49 77 15th 75 9th 42 3rd 29 27thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY33 91 Jan 7th 88 Jan 1st 77 Dec 15th 75 Dec 9th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-22Location: PlumbkitMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 57 93 1st 75 7th 61 13th 54 31stFEB 21 28 18th 19 12th 19 24th 18 6thMAR 22 34 14th 29 20th 24 8th 15 26thAPR 19 39 7th 19 13th 17 19th 13 1stMAY 14 24 19th 16 31st 14 25th 11 7thJUN 16 23 30th 18 24th 15 18th 15 12thJUL 15 20 30th 18 24th 15 18th 10 12thAUG 24 35 17th 27 11th 23 5th 17 29thSEP 30 46 28th 27 10th 27 22nd 26 16thOCT 19 24 22nd 23 10th 15 28th 13 4thNOV 26 35 3rd 32 9th 28 15th 20 21stDEC 48 73 9th 67 15th 38 27th 37 3rdANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY26 93 Jan 1st 75 Jan 7th 73 Dec 9th 67 Dec 15th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-23Location: Reno3MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 47 72 1st 68 7th 47 31st 41 13thFEB1722 18th 17 24th 14 6th 13 12thMAR 18 31 14th 31 29th 23 20th 17 8thAPR 14 20 7th 19 22nd 16 4th 16 28thMAY 15 24 19th 20 22nd 19 16th 16 28thJUN 14 20 24th 18 27th 18 30th 16 18thJUL 14 19 30th 17 9th 17 15th 17 18thAUG 21 33 17th 26 20th 24 11th 22 8thSEP 23 48 7th 33 28th 24 25th 22 10thOCT 13 22 4th 20 1st 18 22nd 18 31stNOV 18 29 24th 27 30th 24 3rd 22 9thDEC 41 78 18th 72 9th 68 24th 66 15thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY20 78 Dec 18th 72 Jan 1st 72 Dec 9th 68 Jan 7th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-24Location: South RenoMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 38 59 7th 47 1st 45 13th 41 19thFEB 14 19 6th 14 18th 11 12th 11 24thMAR 13 22 20th 17 14th 11 8th 11 26thAPR 13 15 7th 15 13th 14 19th 11 1stMAY 15 21 19th 15 25th 15 31st 13 13thJUN 17 35 30th 17 24th 16 18th 13 12thJUL 16 24 30th 18 25th 17 18th 11 6thAUG 20 27 11th 27 17th 19 5th 17 23rdSEP 23 28 28th 25 10th 23 22nd 22 16thOCT 14 24 10th 12 16th 11 4th 9 28thNOV 18 23 3rd 22 9th 15 15th 12 27thDEC 36 57 31st 44 15th 24 3rd 18 21stANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY20 59 Jan 7th 57 Dec 31st 47 Jan 1st 45 Jan 13th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-25Location: Sparks (designated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 52 64 1st 62 7th 60 13th 60 19thFEB 17 18 6th 17 18th 16 24th 15 12thMAR 17 50 14th 48 20th 30 8th 22 26thAPR 16 20 7th 19 22nd 16 4th 16 28thMAY 14 26 19th 15 25th 14 13th 12 31stJUN 16 30 24th 23 24th 14 18th 13 12thJUL 17 23 30th 20 24th 18 18th 12 6thAUG 21 30 11th 24 17th 20 5th 16 29thSEP 28 35 28th 29 22nd 28 10th 27 16thOCT 21 30 10th 23 16th 23 22nd 17 28thNOV 27 40 3rd 38 9th 20 15th 18 21stDEC 39 67 9th 47 15th 38 3rd 24 27thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY24 67 Dec 9th 64 Jan 1st 62 Jan 7th 60 Jan 13th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-26Location: Sparks (collocated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 52 64 7th 63 13th 62 1st 60 19thFEB 18 19 6th 19 18th 17 24th 16 12thMAR 17 25 14th 23 20th 20 8th 13 26thAPR 16 27 7th 18 19th 16 13th 9 1stMAY 15 26 19th 16 25th 14 13th 12 31stJUN 16 24 30th 22 24th 15 18th 13 12thJUL 17 22 30th 20 24th 19 18th 13 6thAUG 21 31 11th 24 17th 20 5th 15 29thSEP 28 36 28th 29 22nd 28 10th 26 16thOCT 20 31 10th 23 16th 22 22nd 17 28thNOV 26 39 3rd 38 9th 20 15th 19 21stDEC 38 66 9th 48 15th 39 3rd 23 27thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY24 66 Dec 9th 64 Jan 7th 63 Jan 13th 62 Jan 1st* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-27Location: TollMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 28 42 7th 39 1st 32 19th 28 13thFEB 10 16 6th 9 12th 7 18th 6 24thMAR 11 18 20th 13 14th 10 26th 9 8thAPR 11 13 7th 12 13th 11 19th 9 1stMAY 16 34 19th 16 31st 14 25th 13 13thJUN 13 19 24th 14 18th 12 12th 6 6thJUL1518 18th 15 6th 15 24th 13 12thAUG 24 35 11th 29 17th 22 5th 21 29thSEP 29 39 28th 32 10th 29 16th 24 22ndOCT 13 17 10th 15 22nd 13 16th 11 4thNOV 15 25 9th 21 3rd 11 15th 10 21stDEC 24 46 9th 27 27th 24 15th 18 3rdANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY18 46 Dec 9th 42 Jan 7th 39 Jan 1st 39 Sep 28th* Hour Beginning2009 ANNUAL SUMMARYPM10(g/m3)- 24 HOUR AVERAGES09-28Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.026 0.062 12/10 0.061 14/9 0.057 15/8 0.051 1/9FEB 0.018 0.046 4/10 0.046 21/18 0.044 20/19 0.042 27/21MAR 0.013 0.051 26/21 0.044 25/6 0.043 5/5 0.043 8/0APR 0.011 0.047 30/5 0.045 4/23 0.043 5/0 0.043 16/21MAY 0.009 0.045 6/4 0.038 4/5 0.037 8/22 0.037 18/6JUN 0.010 0.036 26/23 0.033 23/1 0.029 30/22 0.028 20/22JUL 0.010 0.038 28/8 0.035 29/8 0.035 14/7 0.032 7/3AUG 0.011 0.040 14/7 0.040 20/9 0.038 21/7 0.035 13/2SEP 0.017 0.048 19/0 0.047 21/19 0.043 10/9 0.043 22/18OCT 0.019 0.049 12/8 0.046 23/19 0.045 8/21 0.044 9/0NOV 0.024 0.054 5/9 0.053 17/8 0.052 19/9 0.049 30/9DEC 0.041 0.096 10/10 0.095 9/11 0.083 18/10 0.073 15/10ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.017 0.096 Dec 10/10 0.095 Dec 9/11 0.083 Dec 18/10 0.073 Dec 15/10* Hour Beginning2009 ANNUAL SUMMARYNO2 (ppm) - HOURLY AVERAGES09-29Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.045 0.298 15/8 0.272 14/8 0.262 7/8 0.230 1/6FEB 0.014 0.163 5/7 0.144 2/8 0.137 3/7 0.137 20/8MAR 0.008 0.123 14/6 0.107 18/7 0.098 25/6 0.083 12/8APR 0.005 0.074 17/7 0.071 4/6 0.058 30/6 0.049 11/6MAY 0.004 0.074 7/5 0.048 1/7 0.044 4/7 0.042 18/6JUN 0.004 0.039 22/5 0.035 3/7 0.032 23/7 0.031 4/4JUL 0.004 0.045 14/7 0.037 29/7 0.025 1/7 0.025 28/8AUG 0.005 0.064 31/6 0.059 14/7 0.038 .038 0.029 18/9SEP 0.008 0.098 1/6 0.084 28/5 0.065 21/6 0.062 12/7OCT 0.013 0.153 12/8 0.139 29/8 0.115 17/7 0.113 26/7NOV 0.021 0.182 5/9 0.169 30/9 0.147 19/9 0.134 17/8DEC 0.062 0.313 9/7 0.313 18/8 0.278 16/20 0.267 1/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.016 0.313 Dec 9/7 0.313 Dec 18/8 0.298 Jan 15/8 0.278 Dec 16/20* Hour Beginning2009 ANNUAL SUMMARYNO (ppm) - HOURLY AVERAGES09-30Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.072 0.355 15/8 0.328 14/8 0.305 7/8 0.253 28/8FEB 0.031 0.200 5/7 0.182 2/8 0.180 20/8 0.171 3/7MAR 0.022 0.163 14/6 0.147 18/7 0.141 25/6 0.121 12/8APR 0.016 0.115 17/7 0.106 4/6 0.102 30/6 0.085 27/6MAY 0.013 0.110 7/5 0.078 4/6 0.078 18/6 0.076 1/7JUN 0.013 0.064 22/5 0.058 23/7 0.056 3/7 0.050 4/4JUL 0.013 0.079 14/7 0.071 29/7 0.063 28/8 0.054 1/7AUG 0.015 0.098 14/7 0.093 31/6 0.066 21/7 0.060 20/9SEP 0.024 0.127 1/6 0.117 28/5 0.099 12/7 0.099 21/6OCT 0.032 0.202 12/8 0.182 29/8 0.147 26/7 0.145 17/7NOV 0.044 0.235 5/9 0.218 30/9 0.199 19/9 0.186 17/8DEC 0.103 0.390 9/7 0.385 18/8 0.336 16/20 0.333 10/7ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.033 0.390 Dec 9/7 0.385 Dec 18/8 0.355 Jan 15/8 0.336 Dec 16/20* Hour Beginning2009 ANNUAL SUMMARYNOx (ppm) - HOURLY AVERAGES09-31