Public Comment Period for NOx SIP Rules

Event Description

Purpose: To receive comments on the proposed amendments and adoption of the NOx SIP Call Rules. Also, to receive comment on the accompanying fiscal note for the proposed amendments and adoptions.

On September 9, 2021, the Environmental Management Commission (EMC) approved proceeding to public comment on the NOx SIP Call Rules and fiscal note.

There are a total of four rules going to public comment: 15A NCAC 02D .1401, .1402, .1424, and .1425.

15A NCAC 02D .1401, Definitions. This rule is proposed for amendment to add clarity and consistency for the definitions of “EGU”, “Large non-EGU”, and “NOx SIP Call control period.”

15A NCAC 02D .1402, Applicability. This rule is proposed for amendment to add clarity and consistency by updating the rule references for applicability. 

15A NCAC 02D .1424, Large Non-Electric Generating Units. This rule is proposed for adoption to specify the monitoring, recordkeeping, and reporting for permitted facilities with large non-EGUs that opt to implement alternative monitoring to the 40 CFR Part 75 monitoring requirements. The rule outlines specific methodology for facilities to implement to qualify for the alternative monitoring approach.

15A NCAC 02D .1425, NOx Call SIP Budget. This rule is proposed for adoption to directly incorporate the statewide NOx SIP Call Budgets and the reporting requirements of affected facilities with EGUs. 


Comment Period Ends: December 14, 2021

Please submit comments via any of the methods below:

Email: (Type “NOx SIP Call” in the subject line)

Postal Mail:  Rule Development Branch Supervisor
                      NC Division of Air Quality
                      1641 Mail Service Center
                      Raleigh, NC 27699-1641

Fax: (919) 715-0717 (Address to “Rule Development Branch Supervisor”)

Voicemail: (919) 707-8403 (State your name and affiliation if any)

For instructions on how to join the public hearing via Webex, please refer to the following links:


For technical difficulties, the following automated voicemail has been set up to receive your verbal comments: 919-707-8403.

Si necesita esta información en español, comuníquese con Carolina llamando al 919-609-2189 o enviando un correo electrónico