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“Ecosystem services” are the benefits ecosystems provide to people. These benefits include providing food, clean air, clean water, recreation, and many other services that provide explicit or intrinsic values to people and communities. Investments in Chesapeake Bay re...

This is a followup suppliemental literature review of air sensors that covers the period from 2017 to 2019. It will be used to support development of perormance targets for air sensors.

The use of air sensors continues to grow for a variety of air monitoring applications. However, the data quality still remains highly variable. In 2021, the U.S. EPA published reports outlining recommended testing protocols to evaluate the performance of fine particulate matter a...

The use of air sensors continues to grow for a variety of air monitoring applications. However, the data quality still remains highly variable. In 2021, the U.S. EPA published reports outlining recommended testing protocols to evaluate the performance of ozone air sensors for non...

At least four polyfluorinated organic substances (i.e., 4:2-, 6:2-, 8:2- and 10:2- fluorotelomer alcohols; FTOHs) have sufficient vapor pressure (VP) to be designated as vapor-forming chemicals. Based on current guidance, vapor-forming chemicals warrant investigation for vapor in...

In-situ burning (ISB) is the controlled burning of oil spilled from a vessel or pipeline. There were multiple ISB events after the Deepwater Horizon oil spill on April 20, 2010, including 410 ISBs conducted by the Coast Guard [1]. Proponents of ISB suggest that it offers a rapid ...

A fire whirl technique was tested for its ability to improve the combustion efficiency of in situ oil burns at sea. The oil burns on water tests were conducted at Texas A&M Engineering Extension Service’s (TEEX) Brayton Fire Training facility located in College Station, Texas. Em...

It is imperative to develop sampling and analytical methods to characterize FTOHs in indoor air for the development of mass transfer models to quantitatively predict FTOH emissions and transport for exposure assessment and risk management. This standard describes thermal desorpti...

Electric vehicle energy consumption rates used to quantify power demand related to electric vehicle use

Updates to vehicle emission rates and activity for MOVES3.R1

The goal for this report was to examine current municipal solid waste (MSW) management infrastructure of Davenport, Iowa and provide scenarios with resilience, sustainability, and equity considerations in mind. The City of Davenport, Iowa was selected as the project site through ...

This report documents the results of an interagency project to sample emissions from in situ oil burns, comparing ground-based particulate matter measurements with measurements by aerial unmanned aircraft system (UAS). A sensor/sampler system from the Environmental Protection Age...

This report documents the sources of data, assumptions and analyses used to derive onroad emission rates for vehicle brake/tire wear PM2.5 and PM10. This update also includes a re-analysis of HC and CO exhaust emissions for “pre-Tier 2”, MY2000 and later, vehicles. New data are ...

Vehicle evaporative emissions are now modeled in EPA’s MOVES according to physical processes, permeation, tank vapor venting, liquid leaks, and refueling emissions. With this update, the following improvements are being incorporated into MOVES evaporative emissions methodology, a...

This report describes the sources and derivation for on-road vehicle population and activity information and associated adjustments as stored in the MOVES2014 default databases. Motor Vehicle Emission Simulator, the MOVES2014 model, is a set of modeling tools for estimating emiss...

The fuel supply report documents the data and methodology used to derive the default gasoline, diesel and fuel-blend fuel properties, and their respective fuel market share in MOVES. The default market share of the individual fuels varies by calendar year, seasons, and several do...

Technical report for MOVES3.0

Technical report for MOVES3

Technical report for MOVES Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards NPRM. Note: The report documents linked below refer to Cleaner Trucks Initiative (CTI), which was a previous naming convention for the Control of Air Pollution fr...

Technical report for MOVES Control of Air Pollution from New Motor Vehicles: Heavy-Duty Engine and Vehicle Standards NPRM. Note: The report documents linked below refer to Cleaner Trucks Initiative (CTI), which was a previous naming convention for the Control of Air Pollution fr...

This report documents changes to assumptions about the US national highway vehicle fleet population and activity data for the next version of the MOVES model. Fleet population and activity data is used to convert emission rates into emission inventory values and then is used to ...

Updated running exhaust gaseous emission rates (THC, CO, NOx, CO2) for heavy-duty diesel trucks model year 2010 and later based on portable emission measurements from the manufacturer-run, heavy-duty in-use testing (HDIUT) program. Updated cold start emission rates and soak adjus...

Updated methane, non-methane organic gas, and volatile organic compound calculations based on speciation data. Updated speciation and toxic emission rates for new model year 2010 and later heavy-duty diesel engines. Updated particulate matter emission rates for 2004 and later mod...

Accurate determination of NAAQS pollutant concentrations requires efficient sampling and transport of the pollutants to their respective samplers for quantitative analysis. For reactive gas sampling, Section 9 of Appendix E of 40 CFR Part 58 specifies that only borosilicate glass...

Thist is a summary of research conducted by the Environmental Protection Agency (EPA) )to develop a full-scale emissions test method that characterizes the application and post-application emissions from spray polyurethane foam (SPF) insulation The primary objectives of the resea...