Untitled timeline

Regulatory Path

1-hour SO2 NAAQS

06/03/2010

Modeling and Monitoring Guidance from EPA

04/30/2013

Nonattainment Designation for Monitors

06/03/2013

Finalize Monitoring and Modeling Requrements

12/15/2014

Determine Modeling or Modeling

01/01/2015 - 12/31/2015

Modeling Option

Modeling Protocol

01/04/2016

Modeling Analyses Submitted

01/02/2017

120 Day Letters

08/15/2017

Final Designation

12/15/2017

SIP Attainment Demonstration

08/15/2019

Monitoring Option

Submit Monitoring Plan

06/15/2016

Monitors Operational

01/02/2017

Certify Montoring Data

05/01/2020

120 Day Letters

08/20/2020

Final Designation

12/16/2020

SIP Attainment Demonstration

08/18/2022

External Factors

Sierra Club Submits Modeling

03/22/2013