DAQ has completed and overseen several research projects to better characterize the unique conditions in Clark County.  Multiple studies specifically addressed particulate matter, ozone, and carbon monoxide issues.  Other projects were focused on specific emission inventory categories such as paved road dust, consumer products, ozone precursors, and biogenic emissions.

Pollutant Specific Research	Description
Particulate Matter
Phase II PM2.5 Speciation Report: Analysis of Species During Winter Months  (2022)	This study investigates the composition of PM2.5  in the Las Vegas Valley during the winter months to help determine major source contributions of PM2.5 to inform future regulatory programs.
Clark County On-Road Vehicle Classification Study (2018)	This study identifies vehicle type and analyses vehicle-miles traveled (VMS) and emission rate data to model the timing of emissions released with vehicle type mix and temporal traffic patterns.
Assessment of Dust Emissions, Chemistry and Mineralogy for Management of Natural and Disturbed Surfaces at Nellis Dunes Recreation Area, Nevada (2011)	This study assesses mineral and dust emissions at the Nellis Dunes Recreation Area from multiple emission sources, including both natural and anthropogenic sources.
Particulate Matter (PM10) Saturation Monitoring Study (2007)	A study to help understand the spatial distribution of PM10 and assess the adequacy of the existing Air Quality Monitoring Network to measure impacts.
An Inventory of Vacant Land Soil Stability and Unpaved Private Roads in the Las Vegas Valley Using Remote Sensing Imagery (2006)	A study to develop an inventory of native desert land, disturbed vacant land, stabilized vacant land, and private unpaved roads in the Las Vegas Valley using remote sensing technologies.
Las Vegas Carbon Source Appointment Study (2004)	This study establishes a better understanding of source category contributions to carbonaceous compounds in the Las Vegas Valley.
Las Vegas Valley Visibility and PM2.5 (2002)	A study conducted by the Desert Research Institute to determine the chemical composition of haze and fine particulate matter in southern Nevada.
Remote Sensing of Gaseous and Particle Emissions from On-Road Vehicles in Clark County (2002)	This study measured PM2.5 emissions from vehicle exhaust using remote sensing with ultraviolet LIDAR in the Las Vegas Valley.
Fugitive Dust and Other Source Contributions to PM10 in Nevada's Las Vegas Valley (1997)	This study was designed to better understand the source and nature of the elevated PM10 levels in the Las Vegas Valley.
Ozone
Fires, Asia, and Stratospheric Transport Las Vegas Ozone Study (FAST-LVOS) (2017)	This study builds on findings of the 2013 LVOS study to further assess the effects of wildland fires, Asian pollution, and stratospheric intrusions on surface ozone concentrations in Clark County, and the relative contribution of these processes to high ozone events compared to local ozone production and regional transport from Southern California. For further information about this study, please visit the NOAA website at: https://www.esrl.noaa.gov/csd/projects/fastlvos/.
Characterizing Ozone Transport and Wild-fire Impacts on Clark County Air Quality during the Summer Season (2011)	This study sought to validate air quality modeling for ozone to characterize the transport of ozone during wildfire events during the summer season of 2011.
Las Vegas Ozone Study(LVOS)  (2013)	Study to assess the seasonal influence of stratosphere-to-troposphere transport (STT) and long-range transport from Asia (AS) on surface ozone concentrations in Clark County. For further information about this study, please visit the NOAA website at: https://www.esrl.noaa.gov/csd/projects/lvos/.
Southwest Desert/Las Vegas Transport Study (2008)	Study of the mechanisms and impact of pollutant transport into southern Nevada through enhanced monitoring of ozone air quality and meteorology at key locations during the 2007 ozone season.
Impact of Wildfire Events on Clark County's Air Quality (2008)	This study analyzes the relationship between wildfire emissions and ambient ozone levels in the Las Vegas Valley using PM2.5, canister, and carbonyl sample data from 2005 and 2008.
Ozone Characterization Study (2006)	Study to characterize ozone, its precursors, and transport during high-ozone events.
Clark County Regional Ozone & Precursor Study (2006)	This study sought to establish a basis to support SIP development following exceedances of federal ozone standards by obtaining air quality measurements of ozone and a set of ambient ozone measurements to use for future comparison.
Carbon Monoxide
Carbon Monoxide Saturation Study (2002)	A detailed assessment of CO concentrations in the Las Vegas Valley.
Evaluation of Effectiveness of I&M Program (2002)	This study was conducted to determine an effectiveness rate for the Vehicle Inspection and Maintenance Program in Clark County.
Evaluation of the Effectiveness of the Clark County Vehicle and Maintenance Program (2002)	This study investigated the effectiveness of Clark County's vehicle emissions inspection program in reducing CO emissions.

Emission Source Inventories
Las Vegas Valley Charbroiler Emissions Inventory (2007)	This study inventories charbroilers in the Las Vegas Valley and approximates their production emissions profiles.
VOC
Measurement of Anthropogenic and Wildfire- Specific VOCs in the Las Vegas Valley (2023)	This study analyses VOCs using TO-15 and TO-17 methods in at multiple sites in the Las Vegas Valley to identify the impact of wildfire smoke using tracers VOCs.
Ozone Formation and its Sensitivity to NOx and VOCs (2021)	This study sought to determine the sensitivity of ozone formation in the Las Vegas Valley to ratios of VOCs and NOx as well as its sensitivity to specific sources using 3D modeling techniques.
Analysis From the Clark County Regional Ozone Precursor Studies (2007)	Volatile Organic Compounds (VOC) data for Hazardous Air Pollutants
Clark County Consumer and Commercial Products Emissions Inventory (2005)	Study to quantify volatile organic compound emissions from consumer products in Clark County and recommend potential control measures.
Biogenic VOCs
Biogenic Emissions Inventory for Clark County, NV (2006)	Study to quantify biological emissions from vegetation and land use in Clark County.
Biogenic VOC Emissions Inventory Improvement Project (2006)	Study to improve the accuracy of the biogenic emissions inventory for Clark County.
Particulate Matter
Clark County Paved-Road Mobile Sampling Technologies Studies (2008)	Studies conducted by the DAQ, the Desert Research Institute of Nevada, University of California at Riverside, California and the University of Nevada at Las Vegas on Paved Road Dust Emission Studies in Support of Mobile Monitoring Technologies. Studies compare USEPA AP-42 silt sampling methods with mobile sampling technologies for characterizing entrainable paved-road dust emissions.
Remote Sensing of Gaseous and Particulate Emissions from Onroad Sources (2002)	A study conducted by the Desert Research Institute using remote sensing technologies for use in evaluating emissions from onroad vehicles.
Wind Tunnel Studies to Establish High Wind Threshholds
Clark County Wind Tunnel Study Section 1 (2000)	Estimation of Valley-Wide PM10 emissions using UNLV 1995 wind tunnel measurements, revised vacant land classifications, and GIS-based mapping of vacant lands.
Clark County Wind Tunnel Study Section 2 (2000)	Estimation of Valley-Wide PM10 emissions using UNLV 1995 wind tunnel-derived emission factors, 1998-1999 emission factors, revised vacant land classifications, and GIS-based mapping of vacant lands.
Clark County Wind Tunnel Study Section 3 (2001)	Estimation of PM10 vacant land emission factors for Unstable, Stable and Stabilized lands using data from 1995 and 1998-1999 UNLV wind tunnel studies of vacant and dust-suppressant treated lands.
Clark County Wind Tunnel Study Section 4 (2006)	Refined PM10 Aeolian Emission Factors for native Desert and Disturbed Vacant land Areas for 2004 – Final Report.
Clark County Wind Tunnel Study Section 5 (2006)	Addendum to 2004 Wind Tunnel Study – PM10 Milestone Achievement Report.

 

For more information or questions about research projects and inventory research, contact Yousaf Hameed at (702) 455-1664.