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  2. Permitting Under the Clean Air Act

Permit Documents for Pioneer Valley Energy Center, Westfield, Massachusetts (431 MW Combined Cycle Turbine Project)

Final Permit Documents

  • Pioneer Valley Final Permit Decision (pdf) (296.56 KB, April 12, 2012)
  • Pioneer Valley Energy Center Prevention of Significant Deterioration Permit Response to Comments on Draft Permit Number 052-042-MA15 (pdf) (418.88 KB)

Public Hearing and Comment Period Documents

  • Transcript of Public Hearing for PSD Project: Pioneer Valley Energy Center (pdf) (172.63 KB, January 12, 2012)
  • Public Notice for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (68.25 KB, January 12, 2012)
  • Annonce Publique De La Periode De Commentaires Et De L'Audience Publiques Pour L'Approbation Federale Du Permis Pur La Prevention De Deteriorations Significatives (French) (pdf) (96.46 KB)
  • Notificacion Publica Para La Aprobacion Del Permiso De Prevencion Federal De Deterioro Significativo, Periodo Para Comentarios Del Publico Y Audiencia Publica (Spanish) (pdf) (69.61 KB)
  • ИНФОРМАЦИОННЫЙ БЮЛЛЕТЕНЬ О ПЕРИОДЕ ОПРОСА ОБЩЕСТВЕННОСТИ И ОБСУЖДЕНИЯ ФЕДЕРАЛЬНОГО ПРОЕКТА О РАЗРЕШЕНИИ НА ПРЕДОТВРАЩЕНИЕ ЗНАЧИТЕЛЬНОГО ВРЕДА АТМОСФЕРЕ (Russian) (pdf) (122.92 KB)
  • ZAWIADOMIENIE PUBLICZNE DOTYCZĄCE AKCEPTACJI FEDERALNEGO ZEZWOLENIA W ZAKRESIE ZAPOBIEGANIA ISTOTNEMU POGORSZENIU JAKOŚCI POWIETRZA, TERMINÓW KONSULTACJI SPOŁECZNYCH ORAZ POSIEDZENIA PUBLICZNEGO (Polish) (pdf) (105.13 KB)

Draft Permit Documents

  • Draft Permit for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (143.9 KB)
  • Fact Sheet for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (3.74 MB)
  • Community Update for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (46.75 KB, December 2011)
  • Une Ebauche du Permis de PSD our la Central Electrique de Pioneer Valley, Westfield, Massachusetts (French) (pdf) (89.1 KB)
  • Permiso preliminar de PSD para Pioneer Valley Energy Center, Westfield, MA (Spanish) (pdf) (43.33 KB)
  • Проект о разрешении на предотвращение значительного вреда для Энергетического центра Пайонир-вэлли Уэстфилд, Массачусетс (Russian) (pdf) (108.7 KB)
  • Projekt Zezwolenia PSD dla Pioneer Valley Energy Center, Westfield, Massachusetts (Polish) (pdf) (90.12 KB)

Application Materials & Supplemental Information

  • Re: Pioneer Valley Energy Center, Westfield, Massachusetts, Prevention of Significant Deterioration Air Permit Application, Supplemental Information, ESS Project Number E402-007.01 (pdf) (2.14 MB, March 10, 2010)
  • Application Supplement for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (54.37 KB, July 12, 2010)
  • Combustion Turbine Startup, Predicted 1-Hour CO Ambient Air Impact Concentrations (pdf) (11.6 KB, October 27, 2010)
  • Re: Pioneer Valley Energy Center, Westfield, Massachusetts, Prevention of Significant Deterioration Air Permit Application Supplemental Information, Best Available Control Technology Analysis for Greenhouse Gas Emission (pdf) (116.65 KB, March 9, 2011)
  • Re: Pioneer Valley Energy Center, Westfield, Massachusetts, Prevention of Significant Deterioration Air Permit Application Supplemental Information, Information Request Response, ESS Project Number E402-007.01 (pdf) (750.39 KB, July 12, 2011)
  • Modeling Tables for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (94.75 KB, September 22, 2011)
  • Re: Pioneer Valley Energy Center, Westfield, Massachusetts, Prevention of Significant Deterioration Air Permit Application, Supplemental Information - 1 hour NO2 Impact Analysis, ESS Project Number E402-007.01 (pdf) (3.67 MB, October 14, 2011)
  • Letter from Fish and Wildlife Services Re: endangered species act for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (225.28 KB, January 3, 2011)
  • RE: Pioneer Valley Energy Center, Ampad Road, Westfield, MA. MHC # RC.43441. EEA #14151, EPA Permit #052-042-MA14 (pdf) (326.65 KB, November 3, 2010)
  • Combustion Turbine Startup, Predicted Maximum 1-hr CO Ambient Air Impact Concentrations for Pioneer Valley Energy Center, Westfield, Massachusetts (pdf) (56.59 KB)
  • PVEC Predicted 1-hr NO2 Impact Concentrations at the Controlling Receptor (pdf) (24.7 KB)
  • Re: Pioneer Valley Energy Center, Westfield, MA, Draft Prevention of Significant Deterioration Permit Supplemental Information - Revised 1-hour NO2 Cumulative Impact Assessment ESS Project Number E402-007.01 (pdf) (2.02 MB, March 27, 2012)
  • Application for Pioneer Valley Energy Center, Westfield, MA (pdf) (6.78 MB)

Permitting Under the Clean Air Act

  • Clean Air Act Permitting Around the Nation
    • New England Region (R1)
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  • CAA Permitting Tools & ​Related Resources
  • Outer Continental Shelf Air Permits
Contact Us About Permitting Under the Clean Air Act
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Last updated on May 12, 2025
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