Science & Technology
-
EV-CIS Document Types
This page provides a list of all EV-CIS certification and compliance (i.e., post-certification) document types that can be submitted to EV-CIS for each regulated industry.
-
Presentations about Heavy-Duty Engine and Vehicle Modules in the Engines and Vehicles Compliance Information System (EV-CIS), formerly Verify
This page provides presentations about onroad heavy-duty modules in EV-CIS.
-
Valuing Air Pollution’s Impact on Labor Productivity in General Equilibrium
This is a working paper titled "Valuing Air Pollution’s Impact on Labor Productivity in General Equilibrium"
-
EPA Emission Standards Regulations
This web page provides links with information related to the information found in the Federal Emission Standards Reference Guide.
-
Expert Query Updates
Release update notes for Expert Query
-
CADDIS Volume 5: Causal Databases
Explore tools for finding, storing, and displaying evidence from the scientific literature to evaluate causal pathways included in your assessment.
-
EPA Presentation Regarding the Advanced Light-Duty Powertrain and Hybrid Analysis (ALPHA) Tool
This page contains a selection of the presentations that EPA has publicly presented about our work on the Midterm Evaluation (MTE). It highlights EPA's benchmarking and modeling activities relating to light duty greenhouse gas (GHG) emissions.
-
“Characterizing Factors Influencing SI Engine Transient Fuel Consumption for Vehicle Simulation in ALPHA,” SAE Technical Paper 2017-01-0533, 2017, doi:10.4271/2017-01-0533, Dekraker, P., Stuhldreher, M., Kim, Y. (SwRI).
This paper examines a) typical transient engine operation encountered over the EPA city and highway drive cycles, b) EPA’s vehicle and engine testing to characterize that transient fuel usage, and c) changes made to ALPHA to better model transient engine
-
“Fleet-Level Modeling of Real World Factors Influencing Greenhouse Gas Emission Simulation in ALPHA,” SAE Technical Paper 2017-01-0899, 2017, doi:10.4271/2017-01-0899, Dekraker, P., Kargul, J., Moskalik, A., Newman, K., Doorlag, M., Barba, D.
This paper presents an overview of the laboratory bench marking that was done to support validation of greenhouse gas emission simulation in ALPHA model.
-
New R-LINE Additions to AERMOD 19191 for Refined Transportation Projects
Overview of EPA’s Guidance on New R-LINE Additions to AERMOD 19191 for Refined Transportation Project Analyses focusing on the R-LINE features of AERMOD 19191 and their application; includes background and new features, updates, and model enhancements.
-
Caterpillar Technology—Converter GP- Catalytic Technology (CGP) System
This Caterpillar technology is Converter GP- Catalytic Technology (CGP) System for certain wheeled hydraulic excavators in reducing emissions of certain criteria pollutants on EPA's Verified Technologies List.
-
Low Rolling Resistance (LRR) New and Retread Tires
This page provides links to information for manufacturers and partners for low rolling resistance tires.
-
Tire Size Guidance for SmartWay Verification
Description: Tire size guidance for SmartWay verification and guidance for understanding the SmartWay verified tire list.
-
Information on Diesel Particulate Filters and Diesel Oxidation Catalysts
Documents related to Diesel particulate filters (DPFs) and diesel oxidation catalysts (DOCs).
-
Nutrients Research
Research at EPA provides innovative solutions to address the problem of nitrogen and phosphorus (nutrient) pollution in the nation's air, water and land.
-
AgSTAR Webinar: AgSTAR’s Operator Handbook
Presentations from the webinar
-
Assistance Programs and Resources
Resources about assistance programs available for oil and gas owners and operators to reduce methane emissions
-
Indicator Stories
Explore the impacts of climate change through narratives focused on a particular topic that tell a climate change story through text, figures, maps, and photographs.
-
An Introduction to EPA's Enhanced Aquifer Recharge Research (Webinar)
Informational page for the October 31, 2023 Small Systems webinar.
-
EPA Researchers Develop Tool That Helps Water Quality Managers Meet Nutrient Load Targets
Nutrient pollution is one of America’s most widespread, costly, and challenging environmental problems.