Air pollutants can cause haze, a veil of white or brown that obscures and blurs what we can see in the distance. Federal law requires states to prepare implementation plans to reduce the pollutants that can cause haze in important scenic areas. Delaware was determined to have an impact on haze only for the Brigantine Wilderness Area in New Jersey.
Renae Held
Division of Air Quality
302-739-9402
The 1999 Regional Haze Rule (RHR) requires States to develop State Implementation Plans (SIPs) to reduce visibility impairment. The goal is to return visibility to natural conditions in affected scenic areas by 2064. The rule also requires states to issue periodic reports evaluating progress towards the goals established in their plans.
Delaware submitted its original Regional Haze State Implementation Plan to the U.S. EPA in September of 2008. It covered the first implementation period, 2008 to 2018. In July of 2011, the EPA published a final rule approving Delaware’s Regional Haze SIP (76 FR 42557). Delaware submitted its first progress report in September of 2013.
In July 2022, DNREC Secretary Shawn M. Garvin signed Secretary’s Order No. 2022-A-0013 approving Delaware’s revised Regional Haze State Implementation Plan. It covers the second implementation period, 2018 to 2028.
Appendix 1-1 — Selection of States for MANE-VU Regional Haze Consultation. (2018) (MANE-VU, September 2017) [Selection of States]
Appendix 3-1 — MANE-VU’s Final Interim Principles for Regional Planning. (MANE-VU, July 2001)
Appendix 4-1 — Federal Land Manager Comments and Delaware’s Response.
Appendix 7-1 — Technical Support Document for the 2011 Northeastern U.S. Gamma Emission Inventory. (January 2018)
Appendix 7-2 — Ozone Transport Commission/Mid-Atlantic Northeastern Visibility Union 2011 Based Modeling Platform Support Document – October 2018 Update. (October 2018)
Appendix 8-1 — The Nature of the Fine Particle and Regional Haze Air Quality Problems in the MANE-VU Region: A Conceptual Description. (NESCAUM, November 2006, Revised August 2010 and July 2012)
Appendix 8-2 — Contributions to Regional Haze in the Northeast and Mid-Atlantic United States: Preliminary Update Through 2007. (NESCAUM, March 2012)
Appendix 8-3 — MANE-VU Updated Q/d*C Contribution Assessment. (MANE-VU, April 2016)
Appendix 8-4 — 2016 Updates to the Assessment of Reasonable Progress for Regional Haze in MANE-VU Class I Areas. (MARAMA, January 2016)
Appendix 8-5 — 2016 MANE-VU Source Contribution Modeling Report – CALPUFF Modeling of Large Electrical Generating Units and Industrial Sources (MANE-VU, April 2017)
Appendix 8-6 — Regional Haze Metrics Trends and HYSPLIT Trajectory Analysis. (MANE-VU, May 2017)
Appendix 8-7 — Permit Cancellation Documents for McKee Run Generating Station, City of Dover. (DNREC, November 2021)
Appendix 8-8 — Recommendation on Approaches to Selecting the 20% Most Impaired Days. (MANE-VU, March 2017)
Appendix 8-9 — Analysis of Speciation Trends Network Data Measured at the State of Delaware, Philip K. Hopke and Eugene Kim, Center for Air Resources Engineering and Science Clarkson University. (January 2005)
Appendix 8-10 — Inter-RPO State/Tribal and FLM Consultation Framework. (MANE-VU, May 2006)
Appendix 8-11 — MANE-VU Regional Haze Consultation Plan. (MANE-VU, May 2017)
Appendix 8-12 — MANE-VU Regional Haze Consultation Report. (MANE-VU, July 2018)
Appendix 8-13 — National Park Service Letters. (April 2018 and October 2018)
Appendix 8-14 — Agreement Governing the Acquisition and Operation of Delaware City Refinery (May 2010)
Appendix 9-1 — Statement of the Mid-Atlantic/Northeast Visibility Union (MANE-VU) Concerning a Course of Action within MANE-VU toward Assuring Reasonable Progress for the Second Regional Haze Implementation Period (2018-2028). (August 2017)
Appendix 9-2 — Inter-RPO Consultation Briefing Book. (MANE-VU Resolution for Reasonable Progress) (MANE-VU, May 2006)
Appendix 9-3 — Statement of the Mid-Atlantic/Northeast Visibility Union (MANE-VU) Concerning a Course of Action in Contributing States Located Upwind of MANE-VU toward Assuring Reasonable Progress for the Second Regional Haze Implementation Period (2018-2028). (August 2017)
Appendix 9-4 — Statement of the Mid-Atlantic/Northeast Visibility Union (MANE-VU) Concerning a Course of Action by the Environmental Protection Agency and Federal Land Managers Toward Assuring Reasonable Progress for the Second Regional Haze Implementation Period (2018-2028). (August 2017)
Appendix 10-1 — Facility Responses to Delaware Department of Natural Resources and Environmental Control Request for Information for MANE-VU “Asks”.
Appendix 10-2 — Calpine Title V Operating Permits – Christiana Energy Center, Delaware City Energy Center, and West Energy Center. (May 2021)
Appendix A — 2008 NCC Inventory
Appendix B-1 — 2008 DE Emissions Nonpoint-Nonroad-Onroad (EXCEL)
Appendix B-2 — 2008 Emissions Point (EXCEL)
Appendix C — 2002 Emissions Tables (EXCEL)
Appendix D — 2018 B&F Emissions (EXCEL)
Appendix E — NESCAU Visibility Trends MANEVU 2004-2011
Appendix F-a — US Dept. of Interior FLM Comments and DNREC Responses
Appendix F-b — US Dept. of Agriculture FLM Comments and DNREC Responses
Appendix 1-1a — Contributions to Regional Haze in the Northeast and Mid-Atlantic United States (NESCAUM, August 2006)[aka Contribution Assessment]
Appendix 1-1b — Supplement A – Brigantine
Appendix 3-1 — MANE-VU’s Final Interim Principles for Regional Planning
Appendix 4-1a — Department of Interior Letter with responses
Appendix 4-1b — DNREC responses to DOI, Fish and Wildlife Service comments
Appendix 7-1 — Technical support documentation for the MANE-VU 2002 MANE-VU SIP Modeling Inventories, Version 3
Appendix 7-2 — MANE-VU 2002 Base Year Inventory Tables
Appendix 7-3 — Documentation of 2018 Emissions from Electric Generation Units in the Eastern U.S. for MANE-VU’s Regional Haze Modeling (Alpine Geophysics, March 2008)
Appendix 7-4 — Development of Emissions Projections for 2009, 2012, and 2018 for Non-EGU Point, Area, and Non-road Sources in the MANE-VU Region (MACTEC, February 2007)
Appendix 7-5 — 2009, 2012, and 2018 Projection Year Tables (SMOKE inputs) for EGU, Non-EGU Point, Area, and Non-road Sources in Delaware
Appendix 7-6 — Regulation 24 VOC Control Measures On-The-Books
Appendix 8-1 — Letters to Delaware BART Eligible Units
Appendix 8-2a — City of Dover BART Final Analysis and Proposal (June 2007)
Appendix 8-2b — City of Dover BART Analysis Addendum
Appendix 8-2c — Indian River NRG BART Determination for Unit 3 (June 2008)
Appendix 8-2d — Indian River NRG
Appendix 8-2e — Edge Moor BART Final Report (July 2008)
Appendix 8-2f — Edge Moor BART resubmittal Final Report (June 2007)
Appendix 8-3 — Delaware Title V Regulation
Appendix 8-4 — Delaware Regulation 1102
Appendix 8-5 — Copy of Evraz-Claymont Steel Title V Permit
Appendix 8-6 — Technical Support Document for Regulation 1146
Appendix 9-1 — Baseline and Natural Background Visibility Conditions – Considerations and Proposed Approach to the Calculation of Baseline and Natural Background Visibility Conditions at MANE-VU Class I Areas (NESCAUM, December 2006)
Appendix 9-2 — The Nature of the Fine Particle and Regional Haze Air Quality Problems in the MANE-VU Region: A Conceptual Description (NESCAUM, November 2006)
Appendix 9-3 — Assessment of Reasonable Progress for Regional Haze in MANE-VU Class I Areas (MACTEC, July 2007)(called the Reasonable Progress Report)
Appendix 9-4 — Five-Factor Analysis of BART-Eligible Sources: Survey of Options for Conducting BART Determinations (June 2007)
Appendix 9-5 — Assessment of Control Technology Options for BART-Eligible Sources: Steam Electric Boilers, Industrial Boilers, Cement Plants and Paper and Pulp Facilities (NESCAUM, March 2005)
Appendix 9-6 — MANE-VU Modeling for Reasonable Progress Goals: Model Performance Evaluation, Pollution Apportionment, and Control Measure Benefits (NESCAUM, February 2008)
Appendix 9-7 — 2018 Visibility Projections (NESCAUM, May 2008)
Appendix 9-8 — Non-EGU Source Shutdowns in the MANE-VU Region
Appendix 9-9 — Top 167 EGU’s in Eastern U.S. developed by MANE-VU
Appendix 9-10 — Technical Support Document on Measures to Mitigate the Visibility Impacts of Construction Activities in the MANE-VU Region
Appendix 9-11 — Analysis of Speciation Trends Network Data Measured at the State of Delaware, Philip K. Hopke and Eugene Kim, Center for Air Resources Engineering and Science, Clarkson University, January 20, 2005
Appendix 9-12 — Inter-RPO Consultation Briefing Book (MANE-VU Resolution for Reasonable Progress)
Appendix 10-1 — Inter-RPO State/Tribal and FLM Consultation Framework
Related Topics: air quality, clean air, haze, regional haze