Maryland State Implementation Plan ​​for Clean Air Act Section 110(a)(2) for Nitrogen Dioxide (NO2) and Section 128 for all National Ambient Air Quality Standards

Maryland State Implementation Plan for Clean Air Act Section 110(a)(2) for Lead (Pb)

Maryland's Redesignation Request & M​​aintenance Plan for the 1997 Fine Particulate Matter (PM2.5) Standard for the Washington DC-MD-VA Area

May 2​​​2, 2013

SIP Document

Maryland's Implementation, M​​aintenance, and Enforcement Measures for the 8-Hour Ozone National Ambient Air Quality Standard State Implementation Plan

December ​​21, 2012

SIP Document

Maryland's Regional Haze State Implemen​​tation Plan

February ​​​9, 2012

• SIP Document (4,137 KB)​​​​
• Appendix A- MANE-VU Class I Area Contribution Assessment              
• Appendix A-1 Trajectory Analysis
  
• Appendix A-1a: Trajectory Analysis Results at Acadia National Park
• Appendix A-1b: Trajectory Analysis Results at Brigantine National Park
• Appendix A-1c: Trajectory Analysis Results at Dolly Sods Wilderness Area
• Appendix A-1d: Trajectory Analysis Results at Great Gulf Wilderness Area
• Appendix A-1e: Trajectory Analysis Results at Great Smokey Mountains National Park
• Appendix A-1f: Trajectory Analysis Results at James River Face Wilderness Area
• Appendix A-1g: Trajectory Analysis Results at Lye Brook Wilderness Area
• Appendix A-1h: Trajectory Analysis Results at Mohawk Mountain
• Appendix A-1i: Trajectory Analysis Results at Moosehorn National Wildlife Area
• Appendix A-1j: Trajectory Analysis Results at Multiple Sites
• Appendix A-1k: Trajectory Analysis Results at Queens College, New York City
• Appendix A-1l: Trajectory Analysis Results at Pittsburgh, PA
• Appendix A-1m: Trajectory Analysis Results at Shenandoah National Park
• Appendix A-1n: Trajectory Analysis Results at Washington, D.C.
  
• Appendix A-2: Source Attribution by Receptor-Based Methods
• Appendix A-3: Chemical Transport Model Results
• Appendix A-4: CALPUFF Dispersion Modeling Platforms
• Appendix A-5:  Summary of Stakeholder Comments
• Appendix A-6: MANE-VU Responses to Comments
• Appendix A-7: Lake Michigan Air Directors Consortium (LADCO) Contribution Assessment
• Appendix B- Final Interim Principals for Regional Planning
  
• Appendix C- Federal Land Managers (FLM) Comments (Placeholder)
  
• Appendix D- Base Year Emissions Inventory (EI)
• Appendix D-1- Technical Support Documentation for the MANE-VU 2002 Inventory
• Appendix D-2: Technical Support Documentation for the MDE 2002 Base Year Inventory
• Appendix D-2.1: Base Year Haze SIP Inventory Methodologies
• Appendix D-2.2: Point Source Base Year Inventory Database
• Appendix D-2.3: Area/NonRoad/Quasi-Point Source Base Year Inventory Database
• Appendix D-2.4: Mobile Source Base Year Inventory Database
• Appendix E- Future Year Emissions Inventory
• ​Appendix E-1: MANE-VU Future Year Modeling Inventories
• Appendix E-1-1: 2009 Data
• Appendix E-1-2: 2012 Data
• Appendix E-1-3: 2018 Data    
• Appendix E-2- Development of Emissions Projections for 2009, 2012, and 2018
  
• Appendix F- SMOKE Modeling Configuration
• ​Appendix G-Best Available Retrofit Technology (BART)
• Appendix G-1- BART Source List- MANE-VU
• Appendix G-2- Maryland BART Analysis:
• ​Appendix G-2a- Constellation Power Source Generation BART Assessment: ​Crane Generating Station, Wagner Generating Station
• ​Appendix G-2b- Eastalco Aluminum BART Assessment
• Appendix G-2c- Independent/ St. Lawrence Cement Assessment: Holcim 2010, St. Lawrence Cement 2007
• Appendix G-2d- Mettiki Coal, LLC BART Assessment: Applicability Qualifiers Letter
• Appendix G-2e- New Page/ Westvaco/ Luke Paper BART Assessment: New Page 2007, New Page 2010
• Appendix G-2f- Mirant Mid Atlantic, LLC BART Assessment Documentation: Mirant
• ​Appendix G-3: BART CAIR (Clean Air Interstate Rule) Exemption
• Appendix G-4: Five Factor Analysis of BART Eligible Sources
• Appendix G-5: Assessment of Control Technology Options for BART Eligible Sources
  
• Appendix H- Baseline and Natural Background Visibility Conditions
• Appendix I- The Nature of Fine Particle and Regional Haze Air Quality Problems in the MANE-VU Region
  
• Appendix J- Comparison of CAIR and CAIRPlus Proposal Using the Integrated Planning Model Future Year Emissions Inventory
  
• Appendix K- Assessment of Reasonable Progress for Regional Haze in MANE-VU Class I Areas
  
• Appendix L- MANE-VU Modeling for Reasonable Progress Goals
• Appendix M- 2018 Visibility Projections
  
• Appendix N- Table of Top EGU Emission Points
  
• Appendix O- Technical Support Document on Measures to Mitigate Visibility Impacts on Construction Activities in the MANE-VU Region
• Appendix P- Technical Support Document on Agricultural and Forestry Smoke Management in the MANE-VU Region
  
• Appendix Q- Inter-RPO State Tribal & FLM Consultation Framework
• Appendix R- Documentation of 2018 Emissions from EGU's
  

Maryland’s 8-hour Ozone ​​Reasonably Available Control Technology (RACT) State Implementation Plan, DRAFT 2011 Revision to SIP Number 06-07

SIP Document (1,007 KB)

Document:
Letter to U.S. EPA certifying that MDE has the authority to implement, maintain and enforce the federal PM2.5 National Ambient Air Quality Standards NAAQS

Baltimore Nonattainment Are​​a PM2.5 State Implementation Plan and Base Year Inventory

March 24, 2008

• SIP Document (2377 KB)
  
• Appendix A – Base Year Emission Inventory
• Appendix A-1: Base Year Emission Inventory Methodologies (2679 KB)
• Appendix A-2: Point Source Base Year Inventory (884 KB)
• Appendix A-3: Quasi-Point Source Base Year Inventory (30 KB)
• Appendix A-4: Area Source Base Year Inventory (148 KB)
• Appendix A-5: Mobile Source Base Year Inventory (362 KB)
• Appendix A-6: Nonroad Source Base Year Inventory (235 KB)
• Appendix B – Projection Year Methodologies (194 KB)
• Appendix C – Reasonably Available Control Measures (RACM) Analysis
• Appendix C-1: List of Potential RACM Control Measures & Analysis (998 KB)
• Appendix C-2: BMC Reduction Measures List & Analysis (85 KB)
• Appendix D – Mobile Budget Documentation
• Appendix D-1: PM2.5 Precursor Significance Determination for the Baltimore, MD Nonattainment Area (123 KB)
• Appendix D-2: Baltimore Area Mobile Source Emissions Technical Support Document for the PM2.5 Attainment Plan (271 KB)
• Appendix D-3: MOBILE6.2 Input Parameter Summary (96 KB)
• Appendix D-4: MOBILE6.2 Sample Input Files (128 KB)
• Appendix D-5-1: Baltimore Area VMT and Emission Summary By Vehicle Type (22 KB)
• Appendix D-5-2: Baltimore Area VMT and Emission Summary By Functional Class (18 KB)
• Appendix D-5-3: Baltimore Area 2009 Annual PM2.5 Summary (21 KB)
• Appendix E – Ozone Transport Commission MOU (113 KB)
• Appendix F – Contingency Synopsis of the ASIP Sensitivity Study
• Appendix F-1: Synopsis of the ASIP PM2.5 Sensitivity Study and SO2/NOX Equivalency Ratios (83 KB)
• Appendix F-2: Data from the BOTW/VA CAIR Modeling Run for PM2.5 (34 KB)
• Appendix G – Attainment Modeling and Weight of Evidence
• Appendix G-1: Conceptual Model (5094 KB)
• Appendix G-2: Modeling Domain Boundary (42 KB)
• Appendix G-3: Horizontal Grid Definitions for MM5 and CMAQ Modeling Domain (36 KB)
• Appendix G-4: Vertical Layer Definitions for MM5 and CMAQ Modeling Domain (179 KB)
• Appendix G-5: MM5 Model Configuration (61 KB)
• Appendix G-6: MM5 Model Performance Evaluation (7615 KB)
• Appendix G-7: SMOKE Processing Description and Configuration (1124 KB)
• Appendix G-8: CMAQ Configuration (78 KB)
• Appendix G-9: CMAQ Model Performance (20 KB)
• Appendix G-10: Additional Information on Design value Calculations (53 KB)
• Appendix G-11: Weight of Evidence Report
• Appendix G-11-1: Report (7956 KB)
• Appendix G-11-2: Report Appendices (67827 KB)

State Implementation Plan (SIP) f​​or Annual Fine Particle (PM2.5) Standard and 2002 Base Year Inventory for the Washington DC-MD-VA Nonattainment Area

Date:  March 7, 200​8

Click here to download 

Washington County, MD PM2.5 State Imp​​lementation Plan and Base Year Inventory

February 29, 2008
SIP Document (2067 KB)

• Appendix A – Base Year Emission Inventory
• Appendix A-1: Base Year Emission Inventory Methodologies (2679 KB)
• Appendix A-2: Point Source Base Year Inventory (73 KB)
• Appendix A-3: Quasi-Point Source Base Year Inventory (11 KB)
• Appendix A-4: Area Source Base Year Inventory (32 KB)
• Appendix A-5: Mobile Source Base Year Inventory (75 KB)
• Appendix A-6: Nonroad Source Base Year Inventory
• Appendix A-6-1 (33 KB)
• Appendix A-6-2 (15 KB)
• Appendix B – Projection Year Methodologies (19​4 KB)
• Appendix C – Reasonably Available Control Measures (RACM) Analysis (894 KB)
• Appendix D – Mobile Budget Documentation
• Appendix D-1: 2008 RFP and 2009 Attainment Year Mobile Budget Methodology and Documentation (64 KB)
• Appendix D-2: Washington County Area: Mobile Source Emissions Technical Support Document February 2007 (256 KB)
• Appendix D-3: MOBILE6.2 Input Parameter Summary (94 KB)
• Appendix D-4: MOBILE6.2 Sample Input Files (127 KB)
• Appendix D-5-1: Washington County VMT and Emission Summary By Vehicle Type (39 KB)
• Appendix D-5-2: Washington County VMT and Emission Summary By Functional Class (26 KB)
• Appendix D-5-3: Washington County 2009 Annual PM2.5 Summary (15 KB)
• Appendix E – Ozone Transport Commission MOU (113 KB)
• Appendix F – Contingency Synopsis of the ASIP Sensitivity Study
• Appendix F-1: Synopsis of the ASIP PM2.5 Sensitivity Study and SO2/NOX Equivalency Ratios (83 KB)
• Appendix F-2: Data from the BOTW/VA CAIR Modeling Run for PM2.5 (34 KB)
• Appendix G – Attainment Modeling and Weight of Evidence
• Appendix G-1: Conceptual Model (4056 KB)
• Appendix G-2: Modeling Domain Boundary (42 KB)
• Appendix G-3: Horizontal Grid Definitions for MM5 and CMAQ Modeling Domain (36 KB)
• Appendix G-4: Vertical Layer Definitions for MM5 and CMAQ Modeling Domain (179 KB)
• Appendix G-5: MM5 Model Configuration (61 KB)
• Appendix G-6: MM5 Model Performance Evaluation (7615 KB)
• Appendix G-7: SMOKE Processing Description and Configuration (1124 KB)
• Appendix G-8: CMAQ Configuration (74 KB)
• Appendix G-9: CMAQ Model Performance (20 KB)
• Appendix G-10: Additional Information on Design value Calculations (41 KB)
• Appendix G-11: Weight of Evidence Report
• Appendix G-11-1: Report ( KB)
• Appendix G-11-2: Report Appendices (67827 KB)

Implementation, Maintenance, and Enfo​​rcement of the PM2.5 National Ambient Air Quality Standard State Implementation Plan

Febru​​ary 15, 2008

Click here to download.

Implementation, Maintenance, and Enforcement Measures for the 8-Hour Ozone National Ambient Air Quality Standard S​​tate Implementation Plan (SIP)

June 15, 2​​007

Click here to download.

Baltimore Nonattain​​​ment Area 8-hour Ozone Stat​e Implementation Plan and Base Year Inventory

June 15, ​​​2007

• SIP Document (6.7 MB)
• Appendix A
• Appendix A1 (2.6 MB)
• Appendix A2 (1.2 MB)
• Appendix A3 (429 KB)
• Appendix A4 (280 KB)
• Appendix A5 (710 KB)
• Appendix A6 (878 KB)
• Appendix B (194 KB)
• Appendix C (823 KB)
• Appendix D (92 KB)
• Appendix E
• Appendix E1 (330 KB)
• Appendix E2 (59 KB)
• Appendix F
• Appendix F - Mobile Source Emission Technical Support Document (232 KB)
• Appendix F - Input Parameter Summary (57 KB)
• Appendix F - Input Files Sample (27 KB)
• Appendix F - Summary Table (40 KB)
• Appendix F - Emissions Summary (28 KB)
• Appendix G
• Appendix G1 (514 KB)
• Appendix G2 (15 KB)
• Appendix G3 (15 KB)
• ​Appendix G4 (2.4 MB)
• Appendix G5 (1.1 MB)
• Appendix G6 (827 KB)
• Appendix G7 (1.0 MB)
• Appendix G8 (1.7 MB)
• Appendix G9 (378 KB)
• Appendix G10 (802 KB)
• Appendix G11 (342 KB)
• Appendix G12 (367 KB)
• Appendix G13 (188 KB)
• Appendix G14 (67 KB)
• Appendix G15 (49 KB)
• Appendix H
• Appendix I (69 KB)

Cecil County, Maryland 8-hour ​​Ozone State Implementation Plan and Base Year Inventory

June 15, ​​2007

• SIP Document (5.4 MB)
• Appendix A
• Appendix A1 (2.6 MB)
• Appendix A2 (118 KB)
• Appendix A3 (35 KB)
• Appendix A4 (112 KB)
• Appendix A5 (129 KB)
• Appendix A6 (382 KB)
• Appendix B (194 KB)
• Appendix C (220 KB)
• Appendix D (83 KB)
• Appendix E
• Appendix E1 (328 KB)
• Appendix E2 (59 KB)
• Appendix F
• Appendix F - Mobile Source Emission Technical Support Document (232 KB)
• Appendix F - Input Parameter Summary (57 KB)
• Appendix F - Input Files Sample (27 KB)
• Appendix F - Summary Table (40 KB)
• Appendix F - Emissions Summary (15 KB)
• Appendix G
• Appendix G1 (514 KB)
• Appendix G2 (15 KB)
• Appendix G3 (15 KB)
• Appendix G4 (2.4 MB)
• Appendix G5 (1.1 MB)
• Appendix G6 (827 KB)
• Appendix G7 (1.0 MB)
• Appendix G8 (1.7 MB)
• Appendix G9 (378 KB)
• Appendix G10 (802 KB)
• Appendix G11 (342 KB)
• Appendix G12 (367 KB)
• Appendix G13 (188 KB)
• Appendix G14 (67 KB)
• Appendix G15 (86 KB)
• ​Appendix H
• Appendix I (79 KB)

Plan to Improve Air Qualit​​y in the Metropolitan Washington, DC-MD-VA Region: State Implementation Plan (SIP) ("Moderate Area SIP") for 8-Hour Ozone Standard (includes 2002 Base Year Inventory)

May 23, 200​​7

Click here

Revision to Maryland’s Trans​​portation Conformity State Implementation Plan

November 9, 20​​06

• SIP Document  (71 KB)
• Regulation (1,087 KB)
• Regulation - Full Text (110 KB)

Maryland’s 8-hour Oz​​one Reasonably Available Control Technology (RACT) State Implementation Plan

July 31, ​​​2006

Redesignation Req​​uest for Kent and Queen Anne’s Counties 8-hour Ozone Nonattainment Area

March 15, 2006
Click here to download.

Maintenance Plan ​​and 2002 Base Year Emission Inventory for the Kent and Queen Anne's Counties 8-hour Ozone Nonattainment Area

March 15, ​​2006

Click here to download.

Revisions to Kent and Quee​​n Anne’s Counties 1-hour Ozone Maintenance Plan

March 15, 200​​6

Click here to download.

Washington County 8-Ho​​​​ur Ozone Early Action Compact (EAC) State Implementation Plan: Air Quality Modeling Addendum

SIP Revision 04-10 - Addendum
February 16, 2005
Click here to download.

Washington County ​​8-Hour Ozone Early Action Compact (EAC) State Implementation Plan

November 5, 2004

• SIP Document: Executive Summary/Table of Contents/Chapters 1-8 (2.1 MB PDF file)
• Appendix A (574 KB) Early Action Compact Agreement With Washington County
• Appendix B (622 KB) EAC Guidance and Protocol Documents
• Appendix C (526 KB) EAC Memoranda
• Appendix D (36 KB) Control Measures Selected for Action Plan
• Appendix E (7,135 KB) Comprehensive Analysis of Transportation Emission Reduction Measures
• Appendix F (547 KB) Health and Ozone
• Appendix G (249 KB) History of the Early Action Plan
• Appendix H (1,866 KB) Regional Transport and 8-Hour Ozone
• Appendix I (3,471 KB) Documentation of Public Process

SIP Revision 04-06 (Propo​​​sed) - Revision to the Washington Severe SIP: Implementation of Section 185 Fee Structure

March 26, 2004
Click here to download.

SIP Revision 04-04 (Proposed) - Memorandum of Agreement (MOA) to Allow EPA to Grant the Separatio​​n of the Kent and Queen Anne’s Counties 8-Hour Ozone Nonattainment Area from the Baltimore Region 8-Hour Ozone Nonattainment Area between U.S. EPA Region III and MDE

February 25, 2004
Click here to download.

Revised Carbon Mon​​oxide Maintenance Plan and Revised 1990 Carbon Monoxide Base Year Emissions Inventory for the Washington DC-MD-VA Nonattainment Area

February 19, 200​​4

Click here to download.

Modification to the Rate of Progress Plan for Cecil County: Revising Mobile Emission Estimates with Mobile6​​

January 8, 2004
Click here to download

Redesignation Request for Kent and Quee​​n Anne’s Counties Ozone Nonattainment Area

December 18, 2003
Click here to download.

Maintenance Pla​​n for the Baltimore Carbon Monoxide Attainment Area

December 15, 2​​003

Click here to download.

Demonstrating Rate of Progress for 2002 and 2005; Revision to 1990 Base Year Emissions; and Severe Are​​a Attainment Demonstration for the WASHINGTON DC-MD-VA Nonattainment Area

December 17, 200​​​3

Click here to download.

2002 Maryland Air Quality Repo​​rt - Status Report and Long-Term Trends

Decembe​​r 3, 2003

Click here to download the report.
Click here for historical air quality data.

Modification to the Rat​​​e of Progress Plan for the Baltimore Region: Revising Mobile Emission Estimates with Mobile6

October 27, 2003
Click here to download.

Appendix A - Mobile6 Documentation

Proposed State Implemen​​tation Plan (SIP) - “Severe Area SIP” - Demonstrating Rate of Progress for 2002 and 2005, Revision to 1990 Base Year Emissions, and Severe Area Attainment Demonstration for the WASHINGTON DC-MD-VA Nonattainment

June 2, 2003

• SIP Document: Executive Summary/Table of Contents/Chapters 1-12 (1.2 MB PDF file)
• Appendix A (72 KB PDF file) - Membership Rosters for the Metropolitan Washington Air Quality Committee (MWAQC) and its Technical Advisory Committee and Air Quality Public Advisory Committee
• Appendix B (3.7 MB PDF file) - MOBILE6 Inventories and Documentation
• Appendices C-F (1.2 MB PDF file)
  
• Appendix C - Round 6.2 Cooperative Forecast Projections: Area and Nonroad Inventories and Projections
• Appendix D - Draft Round 6.3 Cooperative Forecast Projections: Area and Nonroad Inventories and Projections
• Appendix E - Point Source Inventories and Projections
• Appendix F - Use of NOx Substitution in Rate of Progress; RACT Fix-Up Documentation
• Appendices G-K (3.1 MB PDF file)
• Appendix G - Emission Reduction from Transportation Control Measures
• Appendix H - Severe Area Plan Commitments
• Appendix I - Contingency Plan Commitments; Emissions Reductions from Phase II RFG Controls; Emissions Reductions from Selected Contingency Measures
• Appendix J - EPA Voluntary Measures Guidance; Allowable Tonnage from Voluntary Measures; Voluntary Measure Documentation
• Appendix K - Information Related to Public Hearings, Hearing Notices, Comments Received and Response to Comments
• Appendix L (11 KB PDF file) - Analysis of Potential Stationary Source RACM Measures for the Metropolitan Washington Region's Severe Area SIP
• Appendix M (40 KB PDF file) - Analysis of Potential Area Source RACM Measures for the Metropolitan Washington Region's Severe Area SIP
• Appendix N (138 KB PDF file) - Analysis of Potential Non-Road Source RACM Measures for the Metropolitan Washington Region's Severe Area SIP
• Appendix O (285 KB PDF file) - Analysis of Potential Mobile Source RACM Measures for the Metropolitan Washington Region's Severe Area SIP

Modification to the Phas​​e II Attainment Plan for the Baltimore and Cecil County Nonattainment Areas: Revising the Mobile Source Emission Budgets using Mobile 6

May 21, 20​​​03

Click here to download.

Reasonably Available Control Mea​​​sure (RACM) Analysis for Cecil County

July 18, 20​​​01

Click here to download.

Reasonably Available Control Meas​​ure (RACM) Analysis for the Baltimore Region

July 6, 2001
Click here to download.

Modification to the Phase II Attain​​ment Plan for the Baltimore Region: Revising the Mobile Source Emission Budgets, Adding Tier 2 Standards

November 6, 2​​000

Click here to download.

Modification to the Phase II Attainment Plan for Cecil County: Revising the Mobile Source Emission Budgets, Adding Tie​​r 2 Standards

Novem​​ber 9, 2000

Click here to download.

Maryland Commitment letter to EPA​​ for Baltimore region

December 17, 1999
Click here to download.

Maryland Commitment letter to EP​​A for Cecil County

February 2, 2000
Click here to download.

Modification to the Phase II Attainment Plan for ​​the Baltimore Nonattainment Area and Cecil County: Revising the Mobile Source Emission Budgets

November 9, 1999
Click here to download.

Phase II Attainment Plan for the Baltimore N​​onattainment Area and Cecil County

April 24, 1998
Click here to download.

Technical Support Document for the Phas​​​e II Attainment Plan for the Baltimore Region

June 29, 20​​01

Click here to download.

Phase I Attainment Plan for th​​e Baltimore Nonattainment Area and Cecil County

Ap​​ril 24, 1998

• SIP Document: Executive Summary, Chapters 1-9, and References
• Appendix A: EPA Policy Memorandum
• Appendix B: Modifications and Projections to the 1990 Base Year
• Appendix C: Post-1996 Target Level Calculation Following EPA Guidance
• Appendix D: Nonroad Emission Reductions
• Appendix E: Emission Reductions from Control Measures Included in the 15% RPP
• Appendix F: The OTC NOx Emission Reduction MOU and Calculation of NOx Emission Reductions from Stationary Sources
• Appendix G: Nitrogen Oxides Substitution
• Appendix H: Revisions to the 15% Rate of Progress Plan

1990 Greenhouse Gas I​​nventory

​April, 2001
Click here​ to download.