Science & Technology

Ecological Condition

The ROE is divided into 5 themes: Air, Water, Land, Human Exposure and Health and Ecological Condition. From these themes, the report indicators address fundamental questions that the ROE attempts to answer. For ecological condition there are 5 questions.

Learn About the ROE Program

This page covers the basic information about this web site and the report on the environment.

Biodiversity and Ecosystem Health

This page explains the connection of the ROE indicators to the chapter themes. This page includes the ROE questions, lists of the related indicators, and additional background information.

TSCA Chemical Data Reporting Fact Sheet: Reporting for Electricity Generating Sites

This fact sheet provides information on existing Chemical Data Reporting (CDR) rule requirements related to the reporting of chemical substances manufactured during operations conducted at electricity generating sites, such as utilities.

Endocrine Disruptor Screening Program Federal Register Notices

This page includes Federal Register (FR) notices related to the Endocrine Disruptor Screening Program (EDSP).

16th Annual Conference and Project Expo

LMOP held its 16th Annual LMOP Conference and Project Expo in Baltimore, Maryland, in January 2013. LMOP awarded the 2012 LMOP Partner and Project of the Years awards.

15th Annual Conference and Project Expo

LMOP held its 15th Annual LMOP Conference and Project Expo in Baltimore, Maryland, in January 2012. LMOP awarded the 2011 LMOP Partner and Project of the Years awards.

14th Annual Conference and Project Expo

LMOP held its 14th Annual LMOP Conference and Project Expo in Baltimore, Maryland, in January 2011. LMOP awarded the 2010 LMOP Partner and Project of the Years awards.

What are EPA’s plans for the 2020 National Emissions Inventory given the atypical situation from COVID-19 that is impacting emissions? What will it be used for?

The EPA intends to prepare a 2020 National Emissions Inventory in collaboration with state, local, and tribal air agency partners. The Air Emissions Reporting Rule (AERR) requires states and delegated local and tribal agencies to report emissions from stationary sources and provide model inputs for onroad and nonroad sources (except…

Last published: July 25, 2025

Plenary (2019 EIC)

Welcome Presentations for the 2019 International Emissions Inventory Conference

2017 International Emissions Inventory Conference program

Conference program which focused on improving science and streamlining sound and timely inventories

Model Averaging Webinar Workshop Announcement

Announcement for model averaging workshop, with links to included workshop materials and a follow-up report

Model Averaging Webinar Workshop Support Materials

Background materials to be used by the Model Averaging Workshop participants. Documents include a technical report and discussion questions.

Implementation of an Emission Statement Program

Guidance for the development and implementation of an emission statement program needed for State Implementation Plans.

Oil and Gas Session (2019 EIC)

Papers and Presentation for Emissions Inventory Preparation for Oil and Gas session during the 2019 Emissions Inventory Conference.

Are biogenic emissions included in the emissions trends Tier 1 data?

No, the biogenic emissions are not included in the emissions trends Tier 1 data. If needed, users can add the biogenic data either as a separate Tier, or specify its inclusion in the “Miscellaneous” Tier 1 group.

Last published: July 25, 2025

Why do the PM2.5 emissions for the electric utilities source category jump up between 1998 and 1999?

The estimation method for PM emissions from fuel combustion sources was enhanced beginning with the 1999 National Emissions Inventory. Prior to 1999, the emissions measurement data methodology only included the filterable portion (which means the solid particle matter at elevated stack temperatures). Beginning with the 1999 NEI, both the filterable…

Last published: July 25, 2025