# COMAR 26.11.02.04: COMAR 26.11.02.04. Duration of Permits > Maryland · Regulations · In force URL: https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_04 ## Section - **Citation:** COMAR 26.11.02.04 - **Heading:** COMAR 26.11.02.04. Duration of Permits - **Jurisdiction:** Maryland - **Kind:** Regulations - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** Code of Maryland Regulations / Title 26 DEPARTMENT OF THE ENVIRONMENT / Subtitle 11 AIR QUALITY / Chapter 02 Permits, Approvals, and Registration / COMAR 26.11.02.04 ## Text A. Unless a permit to construct, State permit to operate, or an approval is revoked by the Department or superseded by another permit, it remains in effect as provided in this regulation. B. Permits to Construct and Approvals. A permit to construct or an approval expires if, as determined by the Department: (1) Substantial construction or modification is not commenced within 18 months after the date of issuance of the permit or approval, unless the Department specifies a longer period in the permit or approval; (2) Construction or modification is substantially discontinued for a period of 18 months after the construction or modification has commenced; or (3) The source for which the permit or approval was issued is not completed within a reasonable period after the date of issuance of the permit or approval. C. State Permits to Operate. (1) Except as provided by State Government Article, §10-226(b), Annotated Code of Maryland , a State permit to operate expires 5 years from the date of issuance by the Department, unless an earlier expiration date is specified in the permit. (2) A State permit to operate for a source may be superseded by the issuance of a Part 70 permit covering that source. D. Temporary Start-Up State Permit to Operate. Notwithstanding §§B and C of this regulation, the Department may issue a temporary start-up State permit to operate for a source or emission unit within the source for a period not to exceed 90 days. In the case of a newly constructed or modified source, the Department may issue a temporary start-up State permit to operate for a period not to exceed 1 year. E. Portable Emission Units. A permit to construct a portable emission unit at a specific site expires if the Department determines that the portable emission unit has not been located at the site for 3 years. F. Duration of Part 70 Permits. The duration of Part 70 permits is located in COMAR 26.11.03.05D . G. Effect of Permit Expiration up State permit to operate for a period not to exceed 1 year. E. Portable Emission Units. A permit to construct a portable emission unit at a specific site expires if the Department determines that the portable emission unit has not been located at the site for 3 years. F. Duration of Part 70 Permits. The duration of Part 70 permits is located in COMAR 26.11.03.05D . G. Effect of Permit Expiration. Except as otherwise provided in this chapter or COMAR 26.11.03 , the expiration of a permit to operate for a source terminates the right of the owner and operator to operate the source. Cross References 26.11.02.02L(1) 26.11.02.02L(2) 26.11.02.16A(3) 26.11.02.16A(4)(a) ## Nearby sections - [COMAR 26.11.02.01 COMAR 26.11.02.01. Definitions](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_01.md) - [COMAR 26.11.02.02 COMAR 26.11.02.02. General Provisions](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_02.md) - [COMAR 26.11.02.03 COMAR 26.11.02.03. Federally Enforceable Permits to Construct and State Permits to Operate](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_03.md) - [COMAR 26.11.02.04 COMAR 26.11.02.04. Duration of Permits](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_04.md) - [COMAR 26.11.02.05 COMAR 26.11.02.05. Violation of Permits and Approvals](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_05.md) - [COMAR 26.11.02.06 COMAR 26.11.02.06. Denial of Applications for State Permits and Approvals](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_06.md) - [COMAR 26.11.02.07 COMAR 26.11.02.07. Procedures for Denying, Revoking, or Reopening and Revising a Permit or Approval](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_07.md) - [COMAR 26.11.02.08 COMAR 26.11.02.08. Late Applications and Delays in Acting on Applications](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_08.md) - [COMAR 26.11.02.09 COMAR 26.11.02.09. Sources Subject to Permits to Construct and Approvals](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_09.md) - [COMAR 26.11.02.10 COMAR 26.11.02.10. Sources Exempt from Permits to Construct and Approvals](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_10.md) - [COMAR 26.11.02.11 COMAR 26.11.02.11. Procedures for Obtaining Permits to Construct Certain Significant Sources](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_11.md) - [COMAR 26.11.02.12 COMAR 26.11.02.12. Procedures for Obtaining Approvals of PSD Sources and NSR Sources, Certain Permits to Construct, and Case-by-Case MACT Determinations in Accordance with 40 CFR Part 63, Subpart B](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_12.md) - [COMAR 26.11.02.13 COMAR 26.11.02.13. Sources Subject to State Permits to Operate](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_13.md) - [COMAR 26.11.02.14 COMAR 26.11.02.14. Procedures for Obtaining State Permits to Operate and Permits to Construct Certain Sources and Permits to Construct Control Equipment on Existing Sources](https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_14.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_MD_COMAR_26_11_02_04. Check the current official text before relying on it. Not legal advice.