# Washoe County, Nevada

Air Quality Trends (2001-2010)

May 2011

Toll Road Monitorin g Station

Prepared by

Lauri Mendoza and Daniel Inouye

Washoe County Health District

Air Quality Managemen t Division

P.O. Box 11130

Reno, Nevada 89520-0027

(775) 784-7200

www.washoecounty.us/health

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# Table of Contents

Page

INTRODUCTION ...................................................................................................................

....... 1

POLLUTANTS ..................................................................................................................... .........2

Particulate Matter (PM 10 

# and PM 2.5 

# ) ........................................................................................2

Ozone (O 3 

# ) .............................................................................................................................. 2

Carbon Monoxide (CO).......................................................................................................... .3

Nitrogen Dioxide (NO 2 

# ) ...........................................................................................................3

Sulfur Dioxide (SO 2 

# )................................................................................................................4

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

NATIONAL AMBIENT AIR QUALITY STANDARDS ....................................................................6

AMBIENT AIR MONITORING NETWORK ...................................................................................7

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

Reno3 (RNO) - (EPA ID #32-031-0016 SLAMS) ..............................................................8

South Reno (SRN) - (EPA ID #32-031-0020 SLAMS) ......................................................8

Galletti (GAL) - (EPA ID #32-031-0022 SLAMS)...............................................................8

Toll Road (TOL) - (EPA ID # 32-031-0025 SLAMS)..........................................................8

Plumb-Kit (PLM) - (EPA ID # 32-031-0030 SLAMS).........................................................8

Sparks (SPK) - (EPA ID #32-031-1005 SLAMS)...............................................................8

Incline Village (INC) - (EPA ID #32-031-2002 SLAMS).....................................................9

Lemmon Valley (LEM) - (EPA ID #32-031-2009 SLAMS).................................................9

No Longer Operating........................................................................................................... ....9

Reno (RNO) - (EPA ID #32-031-0016 SLAMS/SPMS) .....................................................9

Sun Valley (SUN) - (EPA ID #32-031-2006 SLAMS) ........................................................9

Mustang (MST) - (SPMS)..................................................................................................9

A REVIEW of 2010 ............................................................................................................... ......10

CURRENT DESIGN VALUES and ATTAINMENT STATUS ......................................................14

TEN-YEAR AIR QUALITY TREND .............................................................................................15

PM 10 

# (24-hour) ..................................................................................................................... .16

PM 2.5 

# (24-hour)..................................................................................................................... .17

PM 2.5 

# (Annual)...................................................................................................................... .18

O 3 

# (8-hour) ...................................................................................................................... ......19

CO (8-hour)................................................................................................................... ........20

CO (1-hour)................................................................................................................... ........21

NO 2 

# (1-hour)...................................................................................................................... ....22

NO 2 

# (Annual)...................................................................................................................... ...23

SO 2 

# (1-hour, 24-hour, and Annual) .......................................................................................24

Tables ........................................................................................................................ .................. ii

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

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

Acronyms and Abbreviations ..................................................................................................... ...iii

i

# Tables

Page

1. National Ambient Air Quality Standards (as of December 31, 2010)......................................6

2. 2010 Exceedances Summary ...............................................................................................10

3. Design Values and Attainment Status (as of December 31, 2010).......................................14



# Figures

1. State of Nevada .............................................................................................................

......... 1

2. Washoe County Ambient Air Monitoring Sites (2001-2010)....................................................7

3. Reno3.......................................................................................................................

............... 8

4. Toll Road................................................................................................................... ..............8

5. Lemmon Valley ...............................................................................................................

........ 9

6. Monthly AQI Summary for All Pollutants (2010)....................................................................11

7. Monthly AQI Summary of PM 10 

# (2010)..................................................................................12

8. Monthly AQI Summary of PM 2.5 

# (2010).................................................................................12

9. Monthly AQI Summary of O 3 

# (2010) .....................................................................................13

10. Monthly AQI Summary of CO (2010) ....................................................................................13

11. AQI Trend (2001-2010)...................................................................................................... ...15

12. 24-hour PM 10 

# Concentrations (1 st 

# Highs) ..............................................................................16

13. 24-hour PM 2.5 

# Concentrations (3-year Average of 98 th 

# Percentiles; 1 st 

# Highs; and 98 th



# Percentiles) ...........................................................................................................................17

14. Annual PM 2.5 

# Concentrations and Design Values.................................................................18

15. 8-hour O 3 

# Concentrations (3-year Average of 98 th 

# Percentiles)............................................19

16. 8-hour CO Concentrations (2 nd 

# Highs) ..................................................................................20

17. 1-hour CO Concentrations (2 nd 

# Highs)..................................................................................21

18. 1-hour NO 2 

# Concentrations (1 st 

# Highs, 98 th 

# Percentiles, and 3-Year Average of 98 th



# Percentiles) ...........................................................................................................................22

19. Annual NO 2 

# Concentrations..................................................................................................23

20. SO 2 

# Concentrations ..............................................................................................................24



# Appendices

A. Detailed Summary of Three Most Recent Years of Data

ii

# iii 

# 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

CASAC Clean Air Scientific Advisory Committee

CFR Code of Federal Regulations

CO Carbon Monoxide

DMV Department of Motor Vehicles

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

MSA Metropolitan Statistical Area

MST Mustang

NAAQS National Ambient Air Quality Standards

NAMS National Air Monitoring Station

NCDC National Climate Data Center

NCore National Core multipollutant monitoring station

NDEP Nevada Division of Environmental Protection

NDOT Nevada Department of Transportation

NO 2 

# Nitrogen Dioxide

NO

y 

# Reactive Oxides of Nitrogen

O 3 

# Ozone

PAMS Photochemical Assessment Monitoring Station

PLM Plumb-Kit

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 parts per billion

ppm parts per million

RNO Reno

RTIA Reno-Tahoe International Airport

SIP State Implementation Plan

SLAMS State and Local Air Monitoring Station

SO 2 

# Sulfur Dioxide

SPK Sparks

SPM Special Purpose Monitoring

SRN South Reno

STN Speciation Trends Network

SUN Sun Valley

TOL Toll

USG Unhealthy for Sensitive Groups

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# 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 i dentified 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 Air Quality 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 of 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

2001 and 2010 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. Figure 1

State of Nevada

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 1

# 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 pollution 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 t hose 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 micrometers 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 particles, 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 people 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 elevat ed levels 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 (NOx) 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 form s a layer that protects life on earth from

the sun’s harmful rays.

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 tissue. 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

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 2

# pain when taking a dee p 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 illne sses like 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 NOx 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 emissions 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 chemical 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 inversions are more frequent. The air pollution

becomes trapped near the ground beneath a layer of warm air.

Carbon monoxide can cause harmful health effect s 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 reduced ability to exercise. Repeated exposures may contribute to other

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.

Nitrogen Dioxide (NO 2 

# )

Nitrogen dioxide is one of a group of highly reactive gasses known as “oxides of nitrogen”, or

“nitrogen oxides (NOx)”. Other nitrogen oxides in clude nitrous acid and nitric acid. While EPA’s

NAAQS covers this entire group of NOx, NO 2 

# is the component of greatest interest and the

indicator for the larger group of NOx. NO 2 

# forms quickly from emissions from cars, trucks and

buses, power plants, and off-road equipment. In addition 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 visits to emergency

departments and hospital admissions for respiratory issues, especially asthma.

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 3

# NO 2 

# concentrations in vehicles and near roadways are appreciably higher than those measured

at monitors in the current network. In fact, in-vehicle concentrations 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 majo r 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 feet of a

major highway, railroad, or airport. This population likely includes a higher proportion of nonwhite and economically-disadvantaged people. NO 2 

# exposure concentrations near roadways

are of particular concern for susceptible individuals, including people with asthma asthmatics,

children, and the elderly.

NOx 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 emphysema and bronchitis, and can aggravate existing heart disease, leading

to increased hospital admissions and premature death. Ozone is formed when NOx and volatile

organic compounds react in the presence of heat and sunlight. Children, the elderly, people

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 visits, hospital admissions, and

possibly premature deaths.

Emissions that lead to the formation of NO 2 

# generally also lead to the formation of other NOx.

Emissions control measures leading to reductions in NO 2 

# can generally be expected to reduce

population exposures to all gaseous NOx. This may have the important co-benefit of reducing

the formation of ozone and fine particles both of which pose significant public health threats.

Sulfur Dioxide (SO 2 

# )

Sulfur dioxide is one of a group of highly reactive gasses 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 extracting 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 exercising 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

(SOx). SO 2 

# is the component of greatest concern and is used as the indicator for the larger

group of SOx. Other gaseous sulfur oxides (i.e., SO 3 

# ) are found in the atmosphere at

concentrations much lower than SO 2



# .

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 4

# Emissions leading to high concentr ations of SO 2 

# generally also lead to the formation of other

SOx. Control measures that reduce SO 2 

# can generally be expected to reduce people’s

exposures to all gaseous SOx. This may have the important co-benefit of reducing the

formation of fine sulfate particles, which pose significant public health threats.

SOx can react with other compounds in the atmosphere to form small particles. These particles

penetrate deeply into sensitive parts of the lungs and can cause or worsen respiratory disease,

such as emphysema and bronchitis, and can ag gravate existing heart disease, leading to

increased hospital admissions and prematur e death. EPA’s PM NAAQS are designed to

provide 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 industrial 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.

In 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-contaminated

soil and dust. Lead-based paint remains a ma jor exposure pathway in older homes.

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, r eproductive 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, Nevada May 2011

Air Quality Trends (2001-2010) 5

# 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

secondary 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 visibility, damage to animals,

crops, and buildings.

The EPA has set NAAQS for seven principal pollutants, which are called “criteria” pollutants.

They are listed in Title 40 of the Code of Feder al 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

( μ g/m 3 

# ).

Table 1

National Ambient Air Quality Standards (as of December 31, 2010)

Primary Standard Secondary Standard

Pollutant Averaging

Time Concentration Averaging

Time Concentration

PM 10 

# 24-hour 150  g/m 3 

# Same as primary

24-hour 35  g/m 3 

# Same as primary

PM 2.5 

# Annual 15.0  g/m 3 

# Same as primary

O 3 

# 8-hour 0.075 ppm Same as primary

1-hour 35 ppm None

CO

8-hour 9 ppm None

Annual

(arithmetic mean) 0.053 ppm Same as primary

NO 2



# 1-hour 100 ppb None

1-hour 75 ppb None

24-hour 0.14 ppm SO 2



# Annual

(arithmetic mean) 0.03 ppm 3-hour 0.5 ppm

Rolling 3-month

average 0.15  g/m 3 

# Same as primary

Pb

Quarterly average 1.5  g/m 3 

# Same as primary



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 6

# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 7 

# AMBIENT AIR MONI TORING NETWORK

The AQMD began monitoring 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 maintained between 2001 and 2010 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.

Ambient air monitoring data are collected, quality assured, 3 

# and recorded in AQS. Figure 2

displays the ambient air monitoring sites operated between 2001 and 2010. For specific details

regarding the ambient air monitoring network, refer to the AQMD’s “2009 Ambient Air Monitoring

Network Plan” and “2010 Ambient Air Monitoring Network Assessment”.

Figure 2

Washoe County Ambient Air Monitoring Sites (2001-2010)

1 

# 40 CFR 53.

2 

# 40 CFR 58.10.

3 

# 40 CFR 58.

# Following is a description of these monitoring sites sorted by operational status.

Currently Operating

Reno3 (RNO) - (EPA ID #32-031-0016 SLAMS) : This downtown site began operation in

January 2002 to replace the Reno site. Both a residential neighborhood and a

commercial growth area surround this site which is located at 301 State Street. The

pollutants measured are PM 10 

# , PM 2.5 

# , O 3 

# , CO,

and NO 2 

# . The monitoring objectives are to

determine typical concentrations for all

pollutants monitored. Figure 3

Reno3

South Reno (SRN) - (EPA ID #32-031-0020

SLAMS) : Located on the NV Energy property at

4110 Delucchi Lane, this background site is in

a transitional environment between open fields

and office buildings. The site monitors for

typical concentrations for PM 10 

# and CO. The

site also monitors for highest concentrations of

O 3 

# , which forms downwind of the sources of the

photochemical precursors.

Galletti (GAL) - (EPA ID #32-031-0022 SLAMS) : This site is in the State of Nevada

Department of Motor Vehicles and Department of Transportation yards at 305 Galletti

Way in Reno. It is located southeast of the Interstate 80 - US Highway 395 interchange

in a commercial/industrial area. The Galletti site, which monitors PM 10 

# and CO, is

heavily impacted by on-road vehi cle emissions from interstate highways. The monitoring

objective is to determine highest concentrations of the pollutants monitored.

Figure 4

Toll Road Toll Road (TOL) - (EPA 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 commercially 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.

Plumb-Kit (PLM) - (EPA ID # 32-031-0030 SLAMS) : The

Plumb-Kit site is located on the northeast corner of Plumb

Lane and Kietzke Avenue. The only pollutant measured at this

site is PM 10 

# (SLAMS). The monitoring objective is to

determine typical concentrations of PM 10



# .

Sparks (SPK) - (EPA ID #32-031-1005 SLAMS) : The Sparks site is located on US Postal

Service property at 750 Fourth Street in a residential area and measures PM 10 

# , O 3 

# , and

CO. Its monitoring objective is to determine typical concentrations for the pollutants

monitored.

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 8

# Incline Village (INC) - (EPA ID #32-031-2002 SLAMS) : Located at the Washoe County

public library at 855 Alder Drive, this site is outside HA 87. It is located in a

residential/commercial neighborhood, where the monitoring objective is to determine

typical concentrations for the pollutants monitored. The AQMD had monitored PM 10 

# (1993-2002) and CO (1993-2002) and currently monitors for O 3 

# . This site was

temporarily closed from December 2005 to May 2008 for

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



# . Figure 5

Lemmon Va lley

Lemmon Valley (LEM) - (EPA ID #32-031-2009 SLAMS) :

Located at the Joe Mitchell Community Center at 325 Patrician

Drive, 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 to

determine general background concentrations.

No Longer Operating

Reno (RNO) - (EPA ID #32-031-0016 SLAMS/SPMS) : This site was located in a

downtown Reno commercial area 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) - (EPA 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) - (SPMS) : This remote site was located north of Interstate 80 near the

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, Nevada May 2011

Air Quality Trends (2001-2010) 9

# A REVIEW of 2010

The year began with several consecutive days of stable atmospheric conditions and strong

temperature inversions. The lowest temperature of the month (18 degrees) occurred on

January 4. The low temperature and the strong inversions were contributing factors to a 24-

hour PM 2.5 

# concentration and NAAQS exceedance of 38.8  g/m 3 

# on January 5.

The lowest pressure ever recorded at the Reno-Tahoe International Airport (RTIA) occurred on

January 21 when the sea level pressure dropped to 28.91 inches.

A period of cool and wet weather in late May led to a slow start to the 2010 fire season. The

first large wildfire did not occur until the final week of July due to several days of thunderstorms.

Fire activity was sparse during the remainder of the summer with a widespread wetting rain in

early October resulting in an early end to the fire season.

The RTIA tied a record of 35 consecutive days (July 5 through August 8) with a high

temperature of 90 degrees or more. The highest 8-hour O 3 

# concentration during this period was

0.074 ppm (August 5). The only O 3 

# exceedance (0.077 ppm) of the summer occurred after this

period on August 20.

The year ended with above normal precipitation in November and December. These unsettled

conditions prevented any significant periods of stagnation. The highest PM 2.5 

# concentration

during these two months was 24.4  g/m 3 

# which occurred on December 1.

Table 2 summarizes NAAQS exceedances in 2010 by pollutant, averaging period, and dates.

Table 2

2010 Exceedances Summary

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 CO

8-hour none

NO 2 

# 1-hour none

1-hour

24-hour SO 2



# 3-hour n/a - Monitoring began at the

RNO site on January 1, 2011.

3-month

Pb

quarterly Not required to monitor based on population

size and lack of significant Pb sources.



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 10

# Figure 6 su mmarizes the 2010 air quality by month and Air Quality Index (AQI) categories. The

AQI is an index for reporting daily air 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). This hotline is updated daily, and more often during air pollution episodes.

PM, CO, and NO 2 

# concentrations are typically higher in the winter months while higher O 3 

# concentrations are more typical during the summer months.

The AQMD operates two types of monitors for PM 10 

# and PM 2.5 

# - Beta Attenuation Monitors

(BAMs) and filter-based monitors. BAMs colle ct PM data on an hourly basis 24 hours per day,

365 days per year. In 2010, BAM data were used for AQI purposes only and were not used to

determine NAAQS exceedances nor compliance.

Filter-based PM monitors were used for NAAQS compliance and operated on a 1 in 3, or 1 in 6

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

in 6) samples per year. EPA provides desi gn value calculation guidance which makes “less

than daily sampling” data statistically equivalent to daily methods. Because of these differences

in PM monitoring frequency for AQI and NAAQS compliance purposes, the totals in Table 2 may

not be consistent with the data in Figures 6-8.

Figure 6

Monthly AQI Summary for All Pollutants (2010)

0 5 10 15 20 25 30 35Days per Month



# Good 17 23 29 26 25 17 15 9 18 29 26 22

Moderate 12 5 2 4 6 13 16 21 12 2 4 9

USG* 2 - - - - - - 1 - - - -

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

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

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

* Unhealthy for Sensitive Groups

** See footnote on Figure 8.



# The next four figures are pollutant specific and summarize Washoe County’s air quality for the

previous year by pollutant, month, and AQI categories.

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 11

# Figure 7

Monthly AQI Summary of PM 10 

# (2010)

0 5 10 15 20 25 30 35Days per Month



# Good 23 25 29 30 31 30 29 31 30 31 26 22

Moderate 8 3 2 - - - 2 - - - 4 9

USG*

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

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

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

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



# Figure 8

Monthly AQI Summary of PM 2.5 

# (2010)

0 5 10 15 20 25 30 35Days per Month



# Good 17 26 31 30 31 30 30 31 30 20 - -

Moderate 12 2 - - - - 1 - - - - -

USG* 2 - - - - - - - - - - -

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

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

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

* Unhealthy for Sensitive Groups

** Although PM 2.5 

# monitors for short-term AQI forecasts were offline for an extended period of

maintenance (Oct 21 - Dec 31), other PM 2.5 

# monitors for NAAQS compliance purposes were

operational during this period. Figure s 6, 8, and 11 reflect these missing PM 2.5 

# AQI data.



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 12

# Figure 9

Monthly AQI Summary of O 3 

# (2010)

0 5 10 15 20 25 30 35Days per Month



# Good 31 28 30 26 25 17 15 9 18 29 30 31

Moderate - - 1 4 6 13 16 21 12 2 - -

USG* - - - - - - - 1 - - - -

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

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

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



# Figure 10

Monthly AQI Summary of CO (2010)

0 5 10 15 20 25 30 35Days per Month



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

Moderate - - - - - - - - - - - -

USG*

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

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

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

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

* Unhealthy for Sensitive Groups



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 13

# 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, 2010)

NAAQS

Pollutant Averaging Time Level Design Value Designation (Geographic Area)

“Serious” Non-Attainment (HA 87)

PM 10 

# 24-hour 150  g/m 3 

# 0.0

(Expected

Exceedances) Unclassifiable (Remainder of County)

Attainment (HA 87)

24-hour 35  g/m 3 

# 37  g/m 3



# Unclassifiable / Attainment

(Remainder of County)

Attainment (HA 87) PM 2.5 

# *

Annual 15.0  g/m 3 

# 8.1  g/m 3



# Unclassifiable / Attainment

(Remainder of County)

O 3 

# * 8-hour 0.075 ppm 0.070 ppm Unclassifiable / Attainment

(Entire County)

Attainment (HA 87)

1-hour 35 ppm 3.1 ppm Unclassifiable/ Attainment

(Remainder of County)

Attainment (HA 87) CO

8-hour 9 ppm 2.6 ppm Unclassifiable / Attainment

(Remainder of County)

Annual

(arithmetic mean) 0.053 ppm 0.016 ppm Cannot be classified or better than

national standards (Entire County) NO 2



# 1-hour 100 ppb 59.0 ppb n/a (Entire County)

Promulgated in 2010.

1-hour 75 ppb n/a n/a (Entire County)

Promulgated in 2010.

24-hour 0.14 ppm n/a SO 2



# Annual

(arithmetic mean) 0.03 ppm n/a Better than national standards

(Entire County) - Revoked in 2010.

Rolling 3-month

average 0.15  g/m 3 

# n/a

Pb Quarterly

Average 1.5  g/m 3 

# n/a Will be designated during the

second round of designations by

October 15, 2011.

* PM 2.5 

# and O 3 

# ambient air monitoring data from June/Ju ly 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, 2011, EPA has not taken final action. The PM 2.5



# and O 3 

# design values will include these data until EPA determines concurrence with the request.



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 14

# TEN-YEAR AIR QUALITY TREND

Figure 11 summarizes the ten-year trend in AQI between 2001 and 2010. NAAQS revisions in

2006 and 2008 resulted in changes to AQI category ranges and the number of days per year

within those ranges.

Figure 11

AQI Trend (2001-2010)

0 50 100 150 200 250 300 350Days per Year



# Good 252 238 245 244 250 307 308 237 263 258

Moderate 113 127 120 122 113 58 57 108 92 104

USG* - - - - 2 - - 11 8 3

Unhealthy - - - - - - - 9 2 -

Very Unhealthy - - - - - - - 1 - -

Hazardous - - - - - - - - - - 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010

* Unhealthy for Sensitive 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 ppm.

2010: No AQI for PM 2.5 

# from Oct 21 to Dec 31.



# The next subsection provides one-page summaries of the ten-year trend for each pollutant

monitored. The summaries also provide information about the latest year including

exceedances, maximum concentrations, and design values.

Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 15

# PM 10 

# (24-hour)

NAAQS Level : 150  g/m 3



# Current Designation : “Serious” Non-Attainment (HA 87), and Unclassifiable (Remainder of

County)

2010 Exceedances : 0

2010 Expected Exceedances : 0.0

2010 First High : 142  g/m 3 

# (Jan 5 - RNO)

2010 Design Value : 0.0 expected exceedances

Notes : In 2006, EPA retained the 24-hour NAAQS of 150  g/m 3 

# and revoked the annual

NAAQS of 50  g/m 3 

# (71 FR 61144). In July 2009, a revision to the PM 10 

# State Implementation

Plan (SIP) was submitted to EPA Region IX requesting redesignation of HA 87 to

Attainment/Maintenance of the 24-hour NAAQS. [Additional notes: On April 19, 2011, EPA

published a final rule (76 FR 21807) finding that the:1) Truckee Meadows failed to attain the

NAAQS by the applicable date; and 2) the Truc kee Meadows is currently attaining the NAAQS

based on recent monitoring data (2007-2009). The rule does not change the “Serious” nonattainment designation.] In 2010, 1 in 3 day sampling began at the Reno3 site. The remainder

of the PM 10 

# network operates on a 1 in 6 day sampling schedule.

Figure 12

24-hour PM 10 

# Concentrations (1 st 

# Highs)

NAAQS

0 20 40 60 80 100 120 140 160 180 200Concentration (g/m3)



# NAAQS 150 150 150 150 150 150 150 150 150 150

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

0020 (SRN) 112 45 61 54 71 58 75 111 59 52

0022 (GAL) 113 97 108 126 173 118 130 87 91 87

0025 (TOL) 144 57 64 64 75 47 43 64 46 34

0030 (PLM) - - - - - 91 108 86 93 77

1005 (SPK) 78 73 85 90 72 76 76 101 67 55

2002 (INC) 136 64 - - - - - - - -

2006 (SUN) 81 81 100 74 82 - - - - - 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 16

# PM 2.5 

# (24-hour)

NAAQS Level : 35  g/m 3



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

2010 Exceedances : 1 (Jan 5 - RNO)

2010 First High : 38.8  g/m 3 

# (Jan 5 - RNO)

2010 98 th 

# Percentile : 16.3  g/m 3 

# (Jan 8 - RNO)

2010 Design Value : 37  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  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 10, 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 13

24-hour PM 2.5 

# Concentrations (3-year Average of 98 th 

# Percentiles; 1 st 

# Highs;

and 98 th 

# Percentiles)

NAAQS (2006) NAAQS (1997)

0 20 40 60 80 100 120 140Concentration (g/m3)



# NAAQS 65 65 65 65 65 35 35 35 35 35

0016 (RNO) 35.3 33.0 29.0 24.7 29.6 32.2 30.6 34.9 39.4 36.8

1st High 48.6 32.1 22.5 29.8 63.5 28.7 26.9 114.7 52.6 38.8

98th %tile 41.8 25.8 19.4 28.8 40.7 27.0 24.0 53.6 40.5 16.3 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 17

# PM 2.5 

# (Annual)

NAAQS Level : 15  g/m 3



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

2010 Annual Average : 6.0  g/m 3



# 2010 Design Value : 8.1  g/m 3



# Notes : PM 2.5 

# was monitored at one site (RNO) during this period. In 2006, EPA reviewed and

retained the annual NAAQS of 15  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 10, 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 14

Annual PM 2.5 

# Concentrations and Design Values

NAAQS

0 5 10 15 20 25 30 35Concentration (g/m3)



# Annual Ave. 10.3 9.1 7.3 8.1 9.0 7.6 8.6 10.1 7.9 6.0

NAAQS 15 15 15 15 15 15 15 15 15 15

Design Value 9.7 9.4 8.9 8.2 8.1 8.2 8.2 8.6 8.7 8.1 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 18

# O 3 

# (8-hour)

NAAQS Level : 0.075 ppm

Current Designation : Unclassifiable/Attainment (Entire County)

2010 Exceedances : 1 (Aug 20 - TOL)

2010 First High : 0.077 ppm (Aug 20- TOL)

2010 Fourth High : 0.070 ppm (Jul 27 - TOL)

2010 Design Value : 0.070 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 of May 10, 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 15

8-hour O 3 

# Concentrations (3-year Average of 98 th 

# Percentiles)

NAAQS (1997)

NAAQS (2008)

0.055 0.060 0.065 0.070 0.075 0.080 0.085Concentration (ppm)



# NAAQS 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.075 0.075 0.075

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

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

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

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

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

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

SPSM (MST) 0.073 - - - - - - - - - 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 19

# CO (8-hour)

NAAQS Level : 9 ppm

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

2010 Exceedances : 0

2010 First High : 2.8 ppm (Dec 24 - SPK)

2010 Second High : 2.6 ppm (Dec 25 - SPK)

2010 Design Value : 2.6 ppm

Notes : The last measured exceedance of the 8-hour NAAQS occurred in December 1991.

Figure 16

8-hour CO Concentrations (2 nd 

# Highs)

NAAQS

0 1 2 3 4 5 6 7 8 9 10Concentration (ppm)



# NAAQS 9999999999

0016 (RNO) 3.7 4.0 2.6 2.5 2.9 2.6 2.2 1.6 2.1 1.8

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

0022 (GAL) 5.2 4.4 3.6 3.9 3.2 3.2 3.3 2.4 2.3 1.9

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

1005 (SPK) 4.6 4.4 3.8 3.9 3.2 3.0 3.1 2.8 2.9 2.6

2002 (INC) 1.7 1.4 - - - - - - - -

2009 (LEM) 2.4 2.3 1.9 2.1 1.8 1.9 1.8 1.5 1.5 1.3 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 20

# CO (1-hour)

NAAQS Level : 35 ppm

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

2010 Exceedances : 0

2010 First High : 3.4 ppm (Jan 6 - SPK)

2010 Second High : 3.1 ppm (Jan 15 - SPK)

2010 Design Value : 3.1 ppm

Notes : The AQMD has never measured an exceedance of the 1-hour NAAQS.

Figure 17

1-hour CO Concentrations (2 nd 

# Highs)

NAAQS

0 5 10 15 20 25 30 35 40Concentration (ppm)



# NAAQS 35 35 35 35 35 35 35 35 35 35

0016 (RNO) 5.7 6.4 4.8 3.7 4.0 3.5 3.5 2.5 2.9 2.6

0020 (SRN) 4.6 3.1 3.1 3.1 2.5 2.5 2.2 1.7 1.9 1.9

0022 (GAL) 7.1 6.9 6.1 5.3 4.0 4.8 4.1 3.4 3.0 2.7

0025 (TOL) 2.1 1.9 1.8 1.6 1.9 2.2 1.9 1.7 1.6 1.2

1005 (SPK) 7.0 6.7 6.1 5.8 4.4 4.5 4.7 3.8 4.2 3.1

2002 (INC) 2.6 2.0 - - - - - - - -

2009 (LEM) 3.6 4.5 3.7 3.2 2.7 3.4 3.3 1.9 2.6 1.8 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 21

# NO 2 

# (1-hour)

NAAQS Level : 100 ppb (Promulgated in 2010)

Current Designation : Initial recommendations of “Attainment” (HA 87) and “Unclassifiable”

(Remainder of the County) were submitted to the Nevada Division of Environmental Protection

(NDEP) on December 3, 2010. [Additional note: NDEP concurred with the AQMD

recommendations and recommended the same initial designations to EPA Region IX on

January 11, 2011. As of May 10, 2011, EPA has not taken final action.]

2010 Exceedances : 0

2010 First High : 81 ppb (Dec 1 - RNO)

2010 98 th 

# Percentile : 55 ppb (Sep 24 - RNO)

2010 Design Value : 59 ppb

Notes : NO 2 

# was monitored at one site (RNO) during this period. In 2010, EPA established a

new 1-hour NAAQS of 100 ppb (75 FR 6474).

Figure 18

1-hour NO 2 

# Concentrations (1 st 

# Highs, 98 th 

# Percentiles, and 3-Year Average of 98 th 

# Percentiles)

NAAQS

0 20 40 60 80 100 120 140 160 180 200Concentration (ppb)



# NAAQS - - - - - - - - - 100

1st High 143 117 80 82 125 93 72 75 96 81

98th %tile - - - - - - - - 50 55

0016 (RNO) - - - - - - - - 62 59 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 22

# NO 2 

# (Annual)

NAAQS Level : 0.053 ppm

Current Designation : Attainment

2010 Annual Average : 0.016 ppm

2010 Design Value : 0.016 ppm

Notes : NO 2 

# was monitored at one site (RNO) during this period. In 2010, EPA reviewed and

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

Figure 19

Annual NO 2 

# Concentrations

NAAQS

0.000 0.010 0.020 0.030 0.040 0.050 0.060 0.070 0.080 0.090 0.100Concentration (ppm)



# 0016 (RNO) 0.027 0.023 0.028 0.021 0.021 0.020 0.019 0.018 0.017 0.016

NAAQS 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 0.053 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 23

# 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 Designations : 1-hour (Promulgated in 2010) - See Notes; 24-hour (Revoked in 2010) -

Attainment; Annual (Revoked in 2010) - Attainment

Notes : In 2010, EPA established a new 1-hour NAAQS of 75 ppb (75 FR 35520). In that same

rule, EPA revoked the 24-hour and annual NAAQS. SO 2 

# monitoring began at the RNO site on

January 1, 2011. 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 20

SO 2 

# Concentrations

NAAQS

0 20 40 60 80 100 120 140 160 180 200Concentration (ppb)



# NAAQS - - - - - - - - - 75

1st High

----------

0016 (RNO)

---------- 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010



# Washoe County, Nevada May 2011

Air Quality Trends (2001-2010) 24

# Appendix A

Detailed Summary of Three Most Recent Years of Data

# 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

# Washoe County

Ambient Air Monitoring Data

(2008)

# Pollutant Averaging Period Exceedance Dates

PM 10 

# 24-hour none

PM 2.5 

# 24-hour Jun 25 and 26. Jul 2 and 11.

O 3 

# 8-hour Jun 13, 14, 24, 25, and 26. Jul 10.

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 2008. 

# Exceedances (2008)

CO

SO

2 

# n/a - SO

2 

# was not monitored in 2008.



# 08-1Location: GallettiMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.9 2.3 3/9 2.2 13/6 2.0 18/9 1.8 3/1FEB 0.9 2.0 10/3 1.9 8/10 1.8 7/8 1.8 13/5MAR 0.7 1.6 19/9 1.6 10/10 1.5 7/9 1.5 18/9APR 0.5 1.3 2/9 1.3 3/9 1.3 4/8 1.2 13/4MAY 0.4 1.0 5/10 1.0 16/8 0.9 20/7 0.8 6/10JUN 0.4 1.5 25/9 1.2 24/23 0.9 14/7 0.9 21/6JUL 0.5 2.0 10/10 1.4 21/8 1.4 4/19 1.3 14/9AUG 0.5 1.2 16/7 1.2 30/7 1.1 15/8 1.1 14/9SEP 0.7 1.9 25/10 1.6 26/9 1.3 9/8 1.2 18/10OCT 0.8 2.4 24/7 2.0 28/10 1.8 15/9 1.8 23/23NOV 0.9 2.3 13/1 2.0 19/0 2.0 19/10 1.8 18/7DEC 0.8 2.6 7/5 1.9 1/9 1.9 11/11 1.8 31/23ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.7 2.6 Dec 7/5 2.4 Oct 24/7 2.3 Jan 3/9 2.3 Nov 13/1* Hour BeginningCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES2008 ANNUAL SUMMARY08-2Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4THHIGHDATE/HOUR*JAN 0.4 1.5 3/4 1.1 18/9 1.1 25/10 1.1 13/3FEB 0.5 1.3 10/3 1.0 6/1 1.0 26/8 1.0 9/3MAR 0.3 0.9 10/6 0.9 22/2 0.8 9/3 0.8 23/3APR 0.2 0.5 2/7 0.5 3/11 0.5 11/7 0.4 13/3MAY 0.3 0.5 5/6 0.5 19/9 0.4 8/7 0.4 2/6JUN 0.3 1.5 25/9 1.4 25/1 1.2 26/7 0.8 24/8JUL 0.4 1.3 10/6 1.2 11/0 0.9 13/7 0.8 9/22AUG 0.3 0.4 15/9 0.4 12/10 0.4 29/7 0.4 13/9SEP 0.2 0.4 14/4 0.4 10/7 0.4 11/2 0.4 6/3OCT 0.3 0.8 25/2 0.7 23/7 0.7 27/9 0.6 24/7NOV 0.4 1.1 22/2 1.1 16/1 1.1 18/0 1.1 25/1DEC 0.5 1.2 6/2 1.2 31/7 1.1 7/1 1.1 29/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.3 1.5 Jan 3/4 1.5 Jun 25/9 1.3 Feb 10/3 1.3 Jul 10/6* Hour Beginning2008 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES08-3Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.3 1.5 3/3 1.4 3/11 1.4 12/3 1.2 15/9FEB 0.2 0.8 6/2 0.8 7/8 0.8 13/3 0.7 21/11MAR 0.1 0.7 12/13 0.6 17/12 0.6 19/9 0.5 10/11APR 0.1 0.5 12/1 0.4 27/1 0.2 18/9 0.2 2/13MAY 0.1 0.3 16/6 0.3 20/9 0.2 5/10 0.2 9/13JUN 0.2 1.3 25/1 1.3 25/10 0.7 28/4 0.5 26/9JUL 0.2 1.1 11/3 1.0 10/10 0.8 10/2 0.5 10/19AUG 0.1 0.3 25/8 0.3 30/8 0.2 6/23 0.2 6/8SEP 0.1 0.8 25/12 0.3 27/0 0.3 27/22 0.2 9/9OCT 0.2 0.9 28/13 0.8 15/11 0.6 24/12 0.5 13/8NOV 0.3 1.3 19/13 1.2 13/0 1.0 15/1 0.9 11/10DEC 0.4 1.8 31/23 1.6 28/4 1.6 31/12 1.2 1/14ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.2 1.8 Dec 31/23 1.6 Dec 28/4 1.6 Dec 31/12 1.5 Jan 3/3* Hour Beginning2008 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES08-4Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.5 1.2 3/10 1.1 15/9 1.0 2/23 0.9 18/10FEB 0.5 1.0 12/1 0.9 13/4 0.8 6/3 0.8 9/1MAR 0.4 0.7 12/10 0.7 19/10 0.7 24/12 0.7 3/7APR 0.4 0.7 11/8 0.6 18/8 0.6 17/8 0.6 2/8MAY 0.3 0.5 5/12 0.5 16/8 0.5 20/6 0.5 9/9JUN 0.4 1.3 25/1 1.2 25/10 1.0 26/9 0.9 24/11JUL 0.5 1.3 10/10 1.3 11/6 1.1 10/22 0.9 10/1AUG 0.3 0.7 25/8 0.7 29/9 0.7 27/9 0.7 22/9SEP 0.3 0.7 4/9 0.7 25/10 0.7 2/10 0.7 3/10OCT 0.3 0.6 13/9 0.6 24/10 0.6 28/11 0.6 30/11NOV 0.4 1.3 25/1 1.0 24/13 0.9 22/13 0.8 29/7DEC 0.6 1.3 31/11 1.2 21/6 1.1 18/13 1.1 29/9ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.4 1.3 Jun 25/1 1.3 Jul 10/10 1.3 Nov 25/1 1.3 Dec 31/11* Hour Beginning2008 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES08-5Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.7 2.1 3/2 2.0 13/4 1.9 18/8 1.7 19/23FEB 0.7 1.9 9/4 1.8 10/4 1.8 8/10 1.7 17/4MAR 0.4 1.3 18/8 1.3 17/9 1.2 7/7 1.2 21/8APR 0.3 1.1 2/8 0.9 17/7 0.9 18/7 0.9 21/9MAY 0.3 2.0 31/19 0.9 17/2 0.9 2/6 0.6 19/10JUN 0.5 1.7 1/20 1.7 25/9 1.5 24/23 1.4 26/8JUL 0.5 1.5 10/9 1.3 11/1 1.1 10/1 1.0 13/3AUG 0.3 0.8 29/10 0.7 12/7 0.6 7/7 0.6 27/8SEP 0.4 1.1 29/10 1.0 14/1 0.9 25/10 0.9 24/9OCT 0.6 1.7 27/23 1.6 28/9 1.5 24/9 1.4 29/8NOV 0.9 2.1 18/0 2.1 13/0 2.1 29/2 2.1 19/0DEC 0.9 2.8 31/23 2.8 7/0 2.7 8/0 2.6 31/1ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.5 2.8 Dec 31/23 2.8 Dec 7/0 2.7 Dec 8/0 2.6 Dec 31/1* Hour Beginning2008 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES08-6Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.2 0.8 3/9 0.8 15/9 0.6 10/13 0.5 14/23FEB 0.2 0.5 27/12 0.4 28/10 0.3 5/11 0.3 6/2MAR 0.2 0.4 6/12 0.4 12/11 0.4 7/12 0.4 21/8APR 0.1 0.4 22/11 0.3 25/23 0.3 28/9 0.3 25/11MAY 0.1 0.2 5/11 0.2 27/11 0.2 1/9 0.2 8/11JUN 0.2 0.8 25/2 0.8 25/11 0.7 24/11 0.6 26/10JUL 0.2 0.8 10/10 0.7 11/2 0.5 10/2 0.5 10/18AUG 0.1 0.2 1/12 0.2 7/10 0.2 29/9 0.1 5/21SEP 0.1 0.5 27/13 0.4 25/8 0.4 29/11 0.3 23/11OCT 0.1 0.4 30/11 0.4 29/11 0.3 28/11 0.3 17/10NOV 0.4 0.8 22/14 0.8 19/12 0.8 25/23 0.8 24/10DEC 0.5 1.0 18/11 0.9 21/11 0.9 11/12 0.8 31/11ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.2 1.0 Dec 18/11 0.9 Dec 21/11 0.9 Dec 11/12 0.8 Jan 3/9* Hour Beginning2008 ANNUAL SUMMARYCARBON MONOXIDE (ppm) - EIGHT (8) HOUR AVERAGES08-7Location: InclineMONTHHIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN NA NA NA NA NAFEB NA NA NA NA NAMAR NA NA NA NA NAAPR NA NA NA NA NAMAY 0.034 0.057 31/10 0.052 30/14 0.049 25/14 0.047 27/13JUN 0.047 0.092 24/18 0.086 25/10 0.078 13/16 0.077 14/16JUL 0.048 0.081 7/15 0.079 10/10 0.079 16/12 0.078 26/14AUG 0.042 0.071 14/18 0.070 15/10 0.063 16/11 0.061 12/12SEP 0.042 0.063 4/10 0.062 17/13 0.062 24/11 0.059 23/14OCT 0.032 0.057 1/10 0.054 25/14 0.053 24/13 0.051 18/12NOV 0.026 0.045 14/20 0.043 20/5 0.043 23/13 0.042 3/11DEC 0.026 0.050 2/12 0.044 8/5 0.044 9/10 0.043 13/6ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.025 0.092 Jun 24/18 0.086 Jun 25/10 0.081 Jul 7/15 0.079 Jul 10/10* Hour BeginningIncline shelter down until May 14, 20082008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-8Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.028 0.056 27/16 0.049 20/13 0.048 8/5 0.045 5/1FEB 0.026 0.054 27/14 0.053 24/6 0.051 20/15 0.050 19/16MAR 0.037 0.058 7/14 0.057 12/11 0.056 8/13 0.056 9/13APR 0.045 0.076 29/13 0.070 18/12 0.068 19/3 0.068 21/11MAY 0.041 0.071 3/12 0.070 20/20 0.068 10/14 0.067 5/14JUN 0.048 0.102 24/18 0.099 25/9 0.085 14/10 0.085 23/17JUL 0.050 0.094 10/11 0.080 9/15 0.080 26/10 0.078 19/12AUG 0.041 0.072 12/15 0.071 11/16 0.071 16/10 0.070 22/16SEP 0.035 0.069 17/13 0.069 23/16 0.067 24/13 0.066 3/15OCT 0.025 0.068 1/13 0.053 18/12 0.053 25/14 0.052 6/15NOV 0.017 0.046 3/14 0.042 2/21 0.042 19/14 0.041 5/15DEC 0.022 0.048 2/10 0.044 21/22 0.044 25/12 0.043 7/14ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.035 0.102 Jun 24/18 0.099 Jun 25/9 0.094 Jul 10/11 0.085 Jun 14/10* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-9Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.019 0.053 27/16 0.046 20/12 0.045 28/0 0.044 4/23FEB 0.019 0.051 29/23 0.049 24/4 0.047 17/14 0.045 25/14MAR 0.030 0.056 9/15 0.054 8/14 0.053 1/3 0.053 23/12APR 0.039 0.072 29/11 0.068 18/20 0.067 19/4 0.064 14/19MAY 0.036 0.071 3/13 0.064 5/16 0.064 11/18 0.063 10/13JUN 0.044 0.110 25/11 0.096 24/18 0.084 26/15 0.081 14/23JUL 0.045 0.094 10/11 0.088 19/12 0.086 27/11 0.081 26/11AUG 0.036 0.073 6/13 0.073 7/12 0.069 12/14 0.069 16/9SEP 0.032 0.066 4/13 0.064 3/16 0.064 6/15 0.063 13/12OCT 0.020 0.058 1/12 0.049 15/15 0.047 9/2 0.045 15/15NOV 0.011 0.040 3/14 0.038 2/4 0.038 4/0 0.036 5/15DEC 0.013 0.044 2/11 0.043 21/22 0.041 19/3 0.040 25/12ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.029 0.110 Jun 25/11 0.096 Jun 24/18 0.094 Jul 10/11 0.088 Jul 19/12* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-10Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.019 0.053 27/16 0.046 28/0 0.045 20/13 0.045 5/0FEB 0.020 0.055 29/23 0.052 24/5 0.050 26/15 0.050 27/14MAR 0.032 0.059 9/15 0.056 8/14 0.056 23/13 0.054 12/12APR 0.033 0.069 29/13 0.062 19/19 0.058 14/19 0.056 30/1MAY 0.028 0.054 3/12 0.052 11/20 0.052 12/14 0.052 31/11JUN 0.034 0.086 25/10 0.080 24/18 0.072 26/12 0.067 13/17JUL 0.038 0.092 10/11 0.087 19/12 0.078 26/11 0.076 14/12AUG 0.030 0.062 6/12 0.059 12/14 0.059 16/9 0.062 6/12SEP 0.028 0.070 4/14 0.069 3/17 0.062 13/11 0.061 6/15OCT 0.018 0.057 1/12 0.047 28/13 0.045 17/14 0.044 7/15NOV 0.010 0.040 3/12 0.038 4/2 0.036 20/13 0.035 15/13DEC 0.013 0.044 2/12 0.042 21/21 0.040 19/3 0.039 18/22ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.025 0.092 Jul 10/11 0.087 Jul 19/12 0.086 Jun 25/10 0.080 Jun 24/18* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-11Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.019 0.053 27/15 0.044 20/11 0.041 28/2 0.041 5/2FEB 0.018 0.052 27/14 0.050 29/23 0.048 17/14 0.047 25/15MAR 0.030 0.055 8/14 0.055 23/13 0.054 7/14 0.054 15-SepAPR 0.039 0.073 29/13 0.065 18/9 0.065 19/14 0.065 30/0MAY 0.035 0.074 3/12 0.066 5/15 0.066 31/11 0.065 20/20JUN 0.040 0.112 25/10 0.101 24/12 0.086 26/11 0.083 14/22JUL 0.040 0.106 10/11 0.092 19/12 0.084 14/12 0.082 26/11AUG 0.031 0.073 6/13 0.071 10/13 0.070 12/13 0.068 7/12SEP 0.025 0.070 24/12 0.066 3/16 .063 13/11 0.063 17/13OCT 0.018 0.059 1/12 0.049 18/14 0.048 15/14 0.046 5/13NOV 0.011 0.040 3/12 0.038 4/0 0.036 14/14 0.036 21/14DEC 0.013 0.046 2/11 0.040 21/22 0.040 25/12 0.039 22/5ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.027 0.112 Jun 25/10 0.106 Jul 10/11 0.101 Jun 24/12 0.092 Jul 19/12* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-12Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.022 0.045 27/15 0.042 20/13 0.039 5/0 0.039 4/23FEB 0.024 0.043 29/23 0.042 27/14 0.041 24/2 0.041 25/14MAR 0.029 0.046 1/3 0.046 12/12 0.045 9/15 0.045 20/9APR 0.039 0.075 29/15 0.073 18/21 0.071 19/1 0.063 21/11MAY 0.039 0.068 3/15 0.066 13/12 0.064 5/15 0.063 11/16JUN 0.044 0.101 25/10 0.084 24/12 0.083 26/12 0.078 14/18JUL 0.043 0.098 10/11 0.083 14/12 0.079 19/11 0.079 26/11AUG 0.036 0.066 16/10 0.064 6/12 0.064 10/14 0.063 23/10SEP 0.034 0.065 4/15 0.059 3/17 0.059 24/11 0.058 17/13OCT 0.025 0.054 1/12 0.048 18/13 0.046 25/14 0.043 7/13NOV 0.017 0.041 3/12 0.040 20/8 0.039 4/11 0.037 5/12DEC 0.020 0.045 2/12 0.041 18/22 0.041 29/10 0.040 19/0ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.031 0.101 Jun 25/10 0.098 Jul 10/11 0.084 Jun 24/12 0.083 Jun 26/12* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - ONE (1) HOUR AVERAGES08-13Location: InclineMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN NA NA NA NAFEB NA NA NA NAMAR NA NA NA NAAPR NA NA NA NAMAY 0.033 0.055 31/8 0.049 30/10 0.044 27/10 0.044 21/12JUN 0.046 0.075 24/11 0.073 14/11 0.072 13/11 0.071 25/7JUL 0.048 0.074 26/10 0.072 10/9 0.067 13/11 0.066 19/12AUG 0.042 0.060 14/17 0.060 15/8 0.058 12/10 0.058 16/8SEP 0.041 0.059 24/9 0.057 17/9 0.056 4/8 0.054 23/9OCT 0.032 0.047 1/9 0.047 24/9 0.046 25/8 0.044 8/10NOV 0.025 0.040 3/8 0.039 3/20 0.039 14/18 0.039 20/4DEC 0.025 0.042 2/8 0.041 8/2 0.040 18/17 0.039 9/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.024 0.075 Jun 24/7 0.074 Jul 26/10 0.073 Jun 14/11 0.072 Jun 13/11* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-14Location: Lemmon ValleyMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.028 0.050 27/15 0.046 20/10 0.045 8/4 0.044 5/0FEB 0.026 0.051 29/22 0.048 20/11 0.046 24/3 0.046 27/11MAR 0.036 0.054 8/7 0.054 12/8 0.053 7/13 0.053 23/10APR 0.045 0.073 29/8 0.070 29/16 0.069 18/9 0.067 18/17MAY 0.041 0.068 3/10 0.063 5/11 0.063 13/8 0.061 10/11JUN 0.048 0.096 24/12 0.081 25/8 0.078 13/13 0.077 14/9JUL 0.049 0.084 10/9 0.072 9/11 0.071 19/8 0.071 26/8AUG 0.041 0.064 12/10 0.059 6/8 0.059 11/11 0.059 23/8SEP 0.034 0.062 24/9 0.061 17/10 0.060 23/10 0.059 3/10OCT 0.025 0.056 1/9 0.045 18/11 0.045 24/10 0.045 25/10NOV 0.017 0.041 3/10 0.040 2/14 0.039 3/18 0.039 20/6DEC 0.021 0.044 2/8 0.041 18/12 0.041 18/20 0.041 19/4ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.034 0.096 Jun 24/12 0.084 Jul 10/9 0.081 Jun 25/8 0.078 Jun 13/13* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-15Location: Reno3MONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.018 0.048 27/15 0.043 20/8 0.041 4/22 0.039 31/22FEB 0.019 0.050 29/22 0.044 24/3 0.040 3/2 0.038 17/10MAR 0.030 0.052 8/8 0.050 9/10 0.049 23/11 0.049 30/8APR 0.039 0.067 29/8 0.066 29/16 0.064 18/13 0.063 19/2MAY 0.036 0.066 3/10 0.060 11/11 0.059 5/11 0.058 31/8JUN 0.043 0.088 24/11 0.076 14/16 0.076 26/9 0.074 13/13JUL 0.044 0.078 10/11 0.073 19/8 0.071 26/8 0.070 13/9AUG 0.036 0.063 12/9 0.059 6/9 0.059 10/10 0.059 23/8SEP 0.031 0.057 3/10 0.057 24/8 0.056 13/9 0.056 17/10OCT 0.019 0.045 1/11 0.045 8/19 0.038 5/9 0.037 4/9NOV 0.011 0.037 3/19 0.034 2/2 0.034 4/3 0.033 2/10DEC 0.013 0.039 2/8 0.039 18/19 0.038 19/3 0.035 13/2ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.028 0.088 Jun 24/11 0.078 Jul 10/11 0.076 Jun 14/16 0.076 Jun 26/9* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-16Location: South RenoMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.019 0.049 27/13 0.044 27/21 0.042 4/20 0.042 20/10FEB 0.020 0.052 29/20 0.048 24/2 0.044 24/10 0.043 28/11MAR 0.031 0.054 8/8 0.053 9/10 0.051 23/11 0.051 30/10APR 0.032 0.063 29/8 0.058 19/13 0.057 29/16 0.053 19/3MAY 0.028 0.053 3/11 0.049 11/13 0.048 10-Dec 0.047 31/9JUN 0.034 0.072 24/12 0.067 26/9 0.065 25/9 0.063 14/13JUL 0.038 0.079 10/10 0.071 26/9 0.067 19/9 0.067 27/10AUG 0.029 0.055 12/11 0.054 6/9 0.051 10/10 0.050 23/9SEP 0.027 0.057 4/9 0.056 3/10 0.055 6/11 0.054 24/11OCT 0.018 0.046 1/9 0.038 5/9 0.037 7/10 0.037 8/13NOV 0.010 0.037 3/11 0.034 4/8 0.031 2/8 0.031 20/10DEC 0.012 0.038 18/19 0.038 19/3 0.037 2/8 0.036 21/19ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.025 0.079 Jul 10/10 0.072 Jun 24/12 0.071 Jul 26/9 0.067 Jun 26/9* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-17Location: SparksMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.019 0.048 27/12 0.042 27/20 0.041 20/7 0.039 31/22FEB 0.018 0.048 29/22 0.043 24/3 0.042 6/9 0.040 27/11MAR 0.029 0.052 8/8 0.049 9/11 0.049 21/9 0.049 23/10APR 0.038 0.068 29/7 0.067 29/15 0.063 18/8 0.063 19/8MAY 0.035 0.061 11/12 0.061 13/9 0.062 5/10 0.068 3/10JUN 0.039 0.086 24/11 0.075 26/9 0.074 13/13 0.074 14/15JUL 0.039 0.082 10/10 0.075 19/10 0.073 26/9 0.070 27/10AUG 0.031 0.062 12/9 0.061 6/9 0.060 6/9 0.058 23/9SEP 0.025 0.058 24/10 0.055 3/10 0.055 17/11 0.054 13/9OCT 0.017 0.044 1/10 0.040 5/9 0.038 9/8 0.038 19/11NOV 0.010 0.036 3/11 0.035 3/19 0.034 2/6 0.033 4/8DEC 0.013 0.041 2/8 0.037 18/20 0.036 19/4 0.036 25/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.026 0.086 Jun 24/11 0.082 Jul 10/10 0.075 Jun 26/9 0.075 Jul 10/10* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-18Location: TollMONTH AVG. HIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.021 0.041 27/11 0.039 20/8 0.038 4/23 0.037 3/11FEB 0.023 0.043 29/23 0.039 24/0 0.037 28/9 0.036 26/11MAR 0.028 0.042 1/0 0.042 8/8 0.041 1/9 0.041 9/10APR 0.038 0.071 29/10 0.070 18/18 0.066 29/18 0.065 19/3MAY 0.038 0.065 3/10 0.062 13/7 0.060 5/10 0.059 9/11JUN 0.044 0.076 25/8 0.076 26/10 0.075 24/10 0.074 14/10JUL 0.043 0.079 10/9 0.070 26/9 0.068 27/10 0.067 14/8AUG 0.036 0.065 12/8 0.064 11/11 0.062 28/10 0.061 2/9SEP 0.033 0.057 4/8 0.055 24/10 0.052 17/10 0.051 3/10OCT 0.025 0.046 1/10 0.038 18/12 0.037 5/9 0.037 7/10NOV 0.016 0.038 3/10 0.037 20/5 0.035 2/10 0.035 3/18DEC 0.020 0.039 2/9 0.039 18/13 0.039 29/8 0.037 19/0ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.030 0.079 Jul 10/9 0.076 Jun 25/8 0.076 Jun 26/10 0.075 Jun 24/10* Hour Beginning2008 ANNUAL SUMMARYOZONE (ppm) - EIGHT (8) HOUR AVERAGES08-19Location: Reno3 (designated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN8.721.5 19th 12.0 13th 11.7 25th 11.2 7thFEB7.310.9 9th 10.3 21st 9.8 15th 9.1 12thMAR4.58.2 7th 6.8 22nd 6.2 10th 6.1 19thAPR5.69.8 27th 8.9 18th 5.6 3rd 5.1 24thMAY6.211.8 9th 10.4 3rd 6.8 6th 5.9 30thJUN25.7114.7 25th 61.1 26th 34.3 23rd 30.2 29thJUL24.853.6 2nd 47.0 11th 34.3 14th 23.9 5thAUG5.18.8 16th 8.3 13th 6.3 7th 5.5 28thSEP6.58.6 24th 8.2 15th 7.7 9th 7.0 18thOCT7.210.4 18th 10.0 24th 8.1 15th 7.0 12thNOV9.816.0 23rd 12.9 11th 12.2 29th 12.0 17thDEC10.820.5 20th 20.4 17th 17.0 11th 11.7 29thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY10.20 114.70 Jun 25th 61.10 Jun 26th 53.60 Jul 2nd 47.00 Jul 11th* Hour Beginning2008 ANNUAL SUMMARYPM-2.5(g/m3)- 24 HOUR AVERAGES08-20Location: Reno3 (colocated)MONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 8.8 22.0 19th 11.7 25th 11.0 7th 10.5 10thFEB 7.7 11.5 9th 11.0 21st 10.3 15th 9.5 12thMAR 4.6 8.8 7th 6.9 22nd 6.6 10th 6.5 19thAPR 5.5 9.3 27th 8.5 18th 6.6 21st 5.6 3rdMAY 6.2 11.9 9th 10.5 3rd 7.3 6th 6.0 30thJUN 22.5 115.4 25th 34.7 23rd 30.8 29th 16.1 14thJUL 25.1 54.3 2nd 47.2 11th 34.5 14th 24.2 5thAUG 5.2 8.9 16th 8.4 13th 6.7 7th 5.6 25thSEP 6.5 8.8 24th 8.3 15th 7.4 9th 6.9 18thOCT 7.3 10.3 18th 10.1 24th 10.1 27th 8.3 15thNOV 9.8 15.6 23rd 13.0 11th 12.1 26th 11.8 17thDEC 10.4 20.3 17th 16.5 11th 11.4 29th 11.1 5thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY9.90 115.40 Jun 25th 54.30 Jul 2nd 47.20 Jul 11th 34.70 Jun 23rd* Hour Beginning2008 ANNUAL SUMMARYPM-2.5(g/m3)- 24 HOUR AVERAGES08-21Location: GallettiMONTH AVG. HIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 45 87 31st 65 19th 32 13th 32 25thFEB 46 87 12th 50 6th 42 18th 8 24thMAR 57 86 25th 85 7th 66 19th 54 1stAPR 37 78 18th 30 30th 29 12th 23 6thMAY 27 40 6th 37 12th 25 18th 23 30thJUN 38 61 23rd 55 29th 31 17th 25 5thJUL 50 78 11th 55 17th 48 23rd 35 5thAUG 34 49 16th 39 4th 32 28th 31 22ndSEP 39 54 9th 48 15th 41 3rd 32 27thOCT 47 73 27th 50 15th 48 3rd 34 21stNOV 35 66 20th 39 26th 32 8th 28 14thDEC 37 62 8th 62 20th 24 2nd 20 26thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY41 87 Jan 31st 87 Feb 12th 86 Mar 25th 85 Mar 7th* Hour Beginning2008 ANNUAL SUMMARYPM-10,g/m3- 24 HOUR AVERAGES08-22Location: PlumbkitMONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 43 76 19th 49 31st 36 1st 34 7thFEB 43 71 12th 53 6th 43 18th 7 24thMAR 22 35 7th 30 19th 29 25th 17 1stAPR 24 40 18th 26 12th 22 24th 18 6thMAY 18 23 6th 23 12th 21 18th 14 30thJUN 32 55 29th 52 23rd 24 17th 16 5thJUL 46 86 11th 45 5th 38 23rd 36 17thAUG 21 29 16th 24 28th 20 22nd 17 4thSEP 27 36 15th 35 9th 28 3rd 23 27thOCT 31 52 27th 38 15th 24 21st 21 3rdNOV 27 37 26th 35 20th 27 8th 30 14thDEC 38 76 20th 50 8th 26 26th 20 14thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY31 86 Jul 11th 76 Jan 19th 76 Dec 20th 71 Feb 12th* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-23Location: Reno3MONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 33 61 19th 36 31st 30 1st 26 13thFEB3349 6th 46 12th 31 18th 7 24thMAR 23 44 7th 34 19th 31 25th 19 1stAPR 18 29 18th 21 30th 17 12th 16 24thMAY 21 29 12th 25 18th 22 6th 20 30thJUN 43 92 26th 52 29th 20 17th 18 5thJUL 43 84 11th 39 5th 34 23rd 34 17thAUG 21 31 28th 27 16th 21 22nd 14 4thSEP 23 31 9th 25 3rd 24 27th 13 21stOCT 29 40 27th 35 9th 32 15th 21 21stNOV 26 37 20th 36 26th 30 14th 21 8thDEC 32 60 20th 57 8th 19 2nd 13 26thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY29 92 Jun 26th 84 Jul 11th 61 Jan 19th 60 Dec 20th* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-24Location: South RenoMONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 26 44 19th 24 1st 24 7th 24 13thFEB 43 111 12th 32 18th 27 6th 4 24thMAR 15 25 7th 21 25th 17 19th 12 1stAPR 18 28 18th 25 12th 16 24th 11 30thMAY 17 23 12th 23 18th 21 6th 13 30thJUN 26 45 29th 44 23rd 17 17th 12 5thJUL 39 68 11th 49 5th 34 23rd 25 17thAUG 19 28 16th 20 28th 19 22nd 16 4thSEP 22 29 15th 26 3rd 22 9th 20 27thOCT 21 35 27th 21 15th 20 21st 17 3rdNOV 18 28 20th 25 26th 17 8th 16 14thDEC 22 36 20th 32 8th 17 26th 15 2ndANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY23 111 Feb 12th 68 Jul 11th 49 Jul 5th 45 Jun 29th* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-25Location: Sparks (Designated)MONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 31 63 19th 32 31st 27 13th 26 25thFEB 33 60 12th 37 18th 29 6th 6 24thMAR 19 31 7th 23 25th 20 19th 17 1stAPR 17 27 18th 23 12th 12 30th 11 24thMAY 18 25 6th 22 12th 22 18th 15 30thJUN 42 101 26th 58 23rd 48 29th 22 17thJUL 40 57 11th 51 23rd 35 17th 32 5thAUG 19 29 16th 19 22nd 18 28th 15 4thSEP 26 33 9th 29 15th 28 3rd 26 27thOCT 27 59 27th 28 15th 22 21st 15 9thNOV 24 30 20th 29 8th 29 26th 23 14thDEC 34 56 8th 51 20th 29 2nd 21 26thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY27 101 Jun 26th 63 Jan 19th 60 Feb 12th 59 Oct 27th* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-26Location: Sparks (Collocated)MONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 32 63 19th 35 31st 27 25th 26 13thFEB 33 61 12th 37 18th 29 6th 7 24thMAR 15 32 7th 21 19th 16 1st 11 13thAPR 17 27 18th 25 12th 13 30th 11 6thMAY 16 22 6th 19 12th 19 18th 13 30thJUN 31 59 23rd 49 29th 22 17th 14 5thJUL 40 57 11th 52 23rd 34 17th 33 5thAUG 20 29 16th 20 22nd 19 28th 13 10thSEP 26 34 9th 29 15th 28 3rd 26 27thOCT 28 60 27th 28 15th 22 21st 15 3rdNOV 24 30 20th 28 26th 28 8th 23 14thDEC 35 59 8th 50 20th 29 2nd 22 26thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY26 63 Jan 19th 61 Feb 12th 60 Oct 27th 59 Jun 23rd* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-27Location: TollMONTHHIGH DATE2NDHIGHDATE3RDHIGHDATE 4TH HIGH DATEJAN 23 40 19th 24 7th 24 13th 18 1stFEB 20 32 6th 25 12th 23 18th 2 24thMAR 20 36 7th 28 1st 24 25th 12 19thAPR 14 21 18th 14 24th 13 30th 12 12thMAY 16 22 12th 21 18th 17 6th 14 30thJUN 25 44 29th 42 23rd 18 17th 12 5thJUL3664 11th 38 5th 34 23rd 24 17thAUG 19 25 16th 23 28th 19 22nd 15 4thSEP 24 35 9th 26 15th 25 3rd 22 27thOCT 21 36 27th 19 15th 17 21st 13 9thNOV 14 23 26th 20 20th 9 8th 5 2ndDEC 18 38 20th 26 8th 12 2nd 9 14thANNUALSTATISTICSAVG. HIGHMONTH/DAY2NDHIGHMONTH/DAY3RDHIGHMONTH/DAY4TH HIGHMONTH/DAY21 64 Jul 11th 44 Jun 29th 42 Jun 23rd 40 Jan 19th* Hour Beginning2008 ANNUAL SUMMARYPM-10(g/m3)- 24 HOUR AVERAGES08-28Location: Reno3MONTHHIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.024 0.059 10/12 0.056 7/9 0.053 3/10 0.051 8/7FEB 0.025 0.052 21/10 0.050 5/23 0.050 6/0 0.049 11/9MAR 0.017 0.054 12/8 0.052 10/7 0.051 7/7 0.051 20/6APR 0.014 0.055 22/6 0.051 18/4 0.046 21/7 0.044 10/22MAY 0.012 0.042 13/6 0.042 20/4 0.041 2/6 0.039 1/5JUN 0.012 0.045 16/1 0.043 3/6 0.043 25/7 0.043 27/7JUL 0.014 0.075 10/9 0.047 16/6 0.044 15/6 0.044 29/6AUG 0.012 0.048 30/1 0.042 25/8 0.039 7/9 0.038 29/8SEP 0.016 0.064 25/9 0.055 9/8 0.053 24/22 0.047 16/8OCT 0.019 0.050 24/10 0.048 23/17 0.048 28/11 0.045 15/10NOV 0.023 0.063 19/11 0.060 20/8 0.052 18/11 0.050 17/11DEC 0.026 0.060 31/11 0.059 1/10 0.055 7/9 0.050 16/7ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.018 0.075 Jul 10/9 0.064 Sept 25/9 0.063 Nov 19/11 0.060 Dec 31/11* Hour Beginning2008 ANNUAL SUMMARYNO2 (ppm) - HOURLY AVERAGES08-29Location: Reno3MONTHHIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.025 0.221 3/7 0.176 2/23 0.145 15/8 0.132 18/10FEB 0.019 0.154 7/8 0.137 21/7 0.123 15/7 0.117 6/0MAR 0.013 0.188 12/7 0.174 10/7 0.148 7/7 0.132 17/8APR 0.008 0.105 11/22 0.081 2/6 0.072 21/7 0.070 22/7MAY 0.006 0.077 16/6 0.067 20/5 0.064 5/7 0.050 2/6JUN 0.004 0.079 27/7 0.058 9/6 0.051 13/7 0.041 18/5JUL 0.004 0.062 29/6 0.057 15/6 0.051 16/6 0.042 9/7AUG 0.005 0.083 29/8 0.063 28/7 0.057 21/6 0.055 25/6SEP 0.007 0.137 25/9 0.116 19/6 0.084 16/8 0.083 9/8OCT 0.016 0.240 28/6 0.226 15/6 0.218 13/6 0.135 27/7NOV 0.034 0.277 20/8 0.221 19/9 0.238 11/8 0.185 18/19DEC 0.037 0.252 31/7 0.209 1/10 0.201 10/8 0.177 11/8ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.015 0.277 Nov 20/8 0.252 Dec 31/7 0.240 Oct 28/6 0.226 Oct 15/6* Hour Beginning2008 ANNUAL SUMMARYNO (ppm) - HOURLY AVERAGES08-30Location: Reno3MONTHHIGHDATE/HOUR*2NDHIGHDATE/HOUR*3RDHIGHDATE/HOUR*4TH HIGHDATE/HOUR*JAN 0.050 0.265 3/7 0.216 2/23 0.192 7/9 0.188 15/8FEB 0.045 0.196 7/8 0.185 21/10 0.168 6/0 0.165 15/7MAR 0.030 0.239 12/7 0.226 10/7 0.199 7/7 0.180 17/8APR 0.022 0.145 11/22 0.123 22/7 0.120 2/6 0.118 21/7MAY 0.019 0.108 16/6 0.107 20/5 0.098 5/7 0.091 2/6JUN 0.017 0.122 27/7 0.091 9/6 0.089 13/7 0.082 3/6JUL 0.019 0.106 29/6 0.102 15/6 0.099 10/9 0.098 16/6AUG 0.019 0.121 29/8 0.095 25/7 0.086 28/7 0.084 21/6SEP 0.023 0.202 25/9 0.162 19/7 0.138 9/8 0.132 16/8OCT 0.036 0.283 28/6 0.261 15/6 0.254 13/6 0.176 24/6NOV 0.057 0.337 20/8 0.280 11/8 0.276 19/9 0.227 18/19DEC 0.064 0.298 31/7 0.268 1/10 0.243 10/8 0.229 7/9ANNUALSTATISTICSAVG. HIGHMONTHDATE/HOUR*2NDHIGHMONTHDATE/HOUR*3RDHIGHMONTHDATE/HOUR*4TH HIGHMONTHDATE/HOUR*0.033 0.337 Nov 20/8 0.298 Dec 31/7 0.283 Oct 28/6 0.280 Nov 11/8* Hour Beginning2008 ANNUAL SUMMARYNOx (ppm) - HOURLY AVERAGES08-31