Progress Report

Index of Graphics

Please select any of the following thumbails to view the specific chart or map.

Program Basics Figures

Program History
History of the ARP, NBP, CAIR, CSAPR and MATS
Map of CSAPR Implementation
Map of CSAPR Implementation for 2021
Electricity Generation
Electricity Generation from ARP and CSAPR-Affected Power Plants, 2005–2021

Regulated Emissions Sources Figures

Regulated Emissions Sources
Regulated Emissions Sources in CSAPR and ARP, 2021
Table of Affected Units
Regulated Emissions Sources in CSAPR and ARP, 2021

Sulfur Dioxide (SO₂) Figures

SO₂ Emission Trends
SO₂ Emissions from CSAPR and ARP Sources, 1980–2021
SO₂ State-by-State
State-by-State SO₂ Emissions for CSAPR and ARP Sources, 1990–2021
SO₂ Emissions and Generation
Comparison of SO₂ Emissions and Generation for CSAPR and ARP Sources, 2000–2021

Annual Nitrogen Oxides Figures

Annual NOₓ Emission Trends
Annual NOₓ Emissions from CSAPR and ARP Sources, 1990–2021
Annual NOₓ State-by-State
State-by-State Annual NOₓ Emissions from CSAPR and ARP Sources, 1990–2021
Annual NOₓ Emissions and Generation
Comparison of Annual NOₓ Emissions and Generation for CSAPR and ARP Sources, 2000–2021

Ozone Season Nitrogen Oxides Figures

Ozone Season NOₓ Emission Trends
Ozone Season NOₓ Emissions from CSAPR and ARP Sources, 2005–2021
Ozone Season NOₓ State-by-State
State-by-State Ozone Season NOₓ Emissions from CSAPR and ARP Sources, 2000–2021
Ozone Season NOₓ Emissions and Generation
Comparison of Ozone Season NOₓ Emissions and Generation for CSAPR and ARP Sources, 2000–2021

Mercury and Air Toxics Figures

MATS Emission Trends
Mercury Emissions from MATS Sources, 2010–2021
MATS State-by-State
State-by-State Mercury Emissions from MATS Sources, 2021

Emission Controls and Monitoring Figures

SO₂ Controls
SO₂ Emissions Controls in the ARP and CSAPR SO₂ Program, 2021
CSAPR SO₂ Program Monitoring Methodology
CSAPR SO₂ Program Monitoring Methodology, 2021
NOₓ Annual Program Controls
NOₓ Emissions Controls in CSAPR NOₓ Annual Program, 2021
CSAPR NOₓ Annual Program Monitoring Methodology
CSAPR NOₓ Annual Program Monitoring Methodology, 2021
NOₓ Ozone Season Controls
NOₓ Emissions Controls in CSAPR NOₓ Ozone Season Program, 2021
CSAPR NOₓ Ozone Season Program Monitoring Methodology
CSAPR NOₓ Ozone Season Program Monitoring Methodology, 2021
Mercury Controls at MATS-Affected Sources
Mercury Controls at MATS-Affected Sources, 2021
Mercury Compliance and Monitoring Methods
Mercury Compliance and Monitoring Methods used by Units Reporting Hourly Data under MATS, 2021

Program Compliance Tables

SO₂ Compliance Summary
ARP SO₂ Program Allowance Reconciliation Summary, 2021
Annual SO₂ Group 1 Allowance Summary
CSAPR SO₂ Group 1 Program Allowance Reconciliation Summary, 2021
Annual SO₂ Group 2 Allowance Summary
CSAPR SO₂ Group 2 Program Allowance Reconciliation Summary, 2021
Annual NOₓ Allowance Summary
CSAPR NOₓ Annual Program Allowance Reconciliation Summary, 2021
NOₓ Ozone Season Group 1 Allowance Summary
CSAPR NOₓ Ozone Season Program Group 1 Allowance Reconciliation Summary, 2021
NOₓ Ozone Season Group 2 Allowance Summary
CSAPR NOₓ Ozone Season Program Group 2 Allowance Reconciliation Summary, 2021
NOₓ Ozone Season Group 3 Allowance Summary
CSAPR NOₓ Ozone Season Program Group 3 Allowance Reconciliation Summary, 2021

Market Activity Figures

Allowance Transfers
2021 Allowance Transfers under CSAPR and ARP
Allowance Spot Price
Allowance Spot Price (Prompt Vintage), January–December 2021

Sulfur Dioxide and Nitrogen Oxides Trends Figures

National SO₂ Air Quality
National SO₂ Air Quality Trend, 1980–2020
Regional Changes in Air Quality
Regional Changes in Air Quality

Ozone Figures

Percent Change Ozone Season Map
Percent Change in the Highest Values (99ᵗʰ percentile) of 1-hour Ozone Concentrations during the Ozone Season, 2000–2002 versus 2018–2020
Trend in Rural Ozone
Shifts in 8-Hour Seasonal Rural Ozone Concentrations in CSAPR NOₓ Ozone Season and CSAPR Update Regions, 1990–2020
Changes in 8-Hour Ozone Concentrations
Seasonal Average of 8-Hour Ozone Concentrations in CSAPR and CSAPR Update States, Unadjusted and Adjusted for Weather
Changes in 1997 Ozone Nonattainment Areas
Changes in 1997 Ozone NAAQS Nonattainment Areas in CSAPR Region, 2001–2003 (Original Designations) versus 2018–2020
Changes in 2008 Ozone Nonattainment Areas
Changes in 2008 Ozone NAAQS Nonattainment Areas, 2008–2010 (Original Designations) versus 2018–2020

Particulate Matter Figures

PM₂.₅ Seasonal Trends
PM₂.₅ Seasonal Trends, 2000–2018
Changes in 1997 PM₂.₅ Nonattainment Areas
Changes in the 1997 Annual PM₂.₅ NAAQS Nonattainment Areas in CSAPR States, 2001–2003 (Original Designations) versus 2018–2018

Acid Deposition Figures

Sulfur Deposition Map
Three-Year Average of Total Sulfur Deposition
Nitrogen Deposition Map
Three-Year Average of Total Nitrogen Deposition
Regional Trends in Deposition
Regional Trends in Deposition

Ecosystem Health Figures

Monitoring Program Site Map
Long-term Monitoring Program Sites and Trends, 1990–2020
Regional Trends in Water Quality
Regional Trends in Sulfate, Nitrate, ANC, and Base Cations at Long-term Monitoring Sites, 1990–2020
Biomass Loss Due to Ozone Exposure
Estimated Black Cherry, Yellow Poplar, Sugar Maple, Eastern White Pine, Virginia Pine, Red Maple, and Quaking Aspen Biomass Loss Due to Ozone Exposure, 2000–2002 versus 2018–2020

Critical Loads Analysis Figures

Critical Load Exceedances Map
Lake and Stream Exceedances of Estimated Critical Loads for Total Nitrogen and Sulfur Deposition, 2000–2002 versus 2018–2020
Critical Load Exceedances by Region
Critical Load Exceedances by Region, 2000–2002 versus 2018–2020

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