Maryland air permit applications
Updated 2026-11-04 · 11 records · all permit types
As of the 2026-11-04 check, PermitFiled lists 11 current environmental permit records for Maryland air permit applications from Maryland MDE air permit applications (opendata.maryland.gov). By type: air 11.
The most common filing is State Permit to Operate Renewal (State Permits To Operate) (4 of 11), followed by Part 70 Permit to Operate Renewal (Part 70 Permits To Operate) (3).
11 of the 11 records name a county, spread across 9 counties; the most are in Baltimore (3), Frederick (1), Harford (1).
These are 100% of the 11 current Maryland records PermitFiled tracks.
The most recently received filing in the data is Laurel Sand & Gravel, Inc. - Laurel Hill Quarry (Initial State Permit to Operate (State Permits To Operate)), received 2026-11-02; the oldest listed was received 2026-09-08.
Latest records (11 of 11)
| Received | Type | Facility / applicant | Program | Location | Status | Source |
|---|---|---|---|---|---|---|
| 2026-11-02 | air | Laurel Sand & Gravel, Inc. - Laurel Hill Quarry · ID 021-0003 | Initial State Permit to Operate (State Permits To Operate) | Frederick County | Issued | official record |
| 2026-10-29 | air | Citrus And Allied Essences, Ltd · ID 025-0242 | State Permit to Operate Renewal (State Permits To Operate) | Harford County | Expired - Extended | official record |
| 2026-10-22 | air | AES Warrior Run · ID 001-0203 | Part 70 Permit to Operate Renewal (Part 70 Permits To Operate) | Allegany County | Issued | official record |
| 2026-10-21 | air | Cargill, Inc. - Salt Division · ID 005-0866 | State Permit to Operate Renewal (State Permits To Operate) | Baltimore County | Issued | official record |
| 2026-10-20 | air | Anduril Industries, Inc. · ID 005-0332 | Change of Ownership State Permit to Operate (State Permits To Operate) | Baltimore County | Issued | official record |
| 2026-10-15 | air | MPI Labels of Baltimore, Inc · ID 510-2244 | State Permit to Operate Renewal (State Permits To Operate) | Baltimore City County | Expired - Extended | official record |
| 2026-10-02 | air | Aggregate & Dirt Solutions, LLC · ID 033-2326 | State Permit to Operate Renewal (State Permits To Operate) | Prince George's County | Issued | official record |
| 2026-10-02 | air | Worcester County Central Municipal Landfill · ID 047-0112 | Part 70 Permit to Operate Renewal (Part 70 Permits To Operate) | Worcester County | Issued | official record |
| 2026-09-29 | air | Morgantown Power, LLC · ID 017-0279 | Initial Part 70 Permit to Operate (Part 70 Permits To Operate) | Charles County | Issued | official record |
| 2026-09-16 | air | NRG Vienna Generating Station · ID 019-0013 | Part 70 Permit to Operate Renewal (Part 70 Permits To Operate) | Dorchester County | Issued | official record |
| 2026-09-08 | air | Greater Baltimore Medical Center · ID 005-0039 | Synthetic Minor State Permit to Operate Renewal (State Permits To Operate) | Baltimore County | Issued | official record |
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Questions about this data
How many environmental permit records are listed for Maryland air permit applications?
As of 2026-11-04, PermitFiled lists 11 current records for Maryland air permit applications from public agency data (air 11).
What kinds of permits are filed in Maryland air permit applications?
The most common filings are State Permit to Operate Renewal (State Permits To Operate) (4), Part 70 Permit to Operate Renewal (Part 70 Permits To Operate) (3), Initial State Permit to Operate (State Permits To Operate) (1), based on the program named in each agency record.
What is the most recent permit filing listed for Maryland air permit applications?
Laurel Sand & Gravel, Inc. - Laurel Hill Quarry: Initial State Permit to Operate (State Permits To Operate), received 2026-11-02, status Issued, permit ID 021-0003.
Where does this data come from and how can I verify a record?
The records come from Maryland MDE air permit applications (opendata.maryland.gov) (https://opendata.maryland.gov/d/r8cv-wcdu). Each record on this page links to its official record; verify there before acting.
Related pages
Other permit types in Maryland: none yet
Same type in other states: Texas (176) · Louisiana (12)
Permit type × state index · All county pages