Clean Water Act discharge permit · NPDES MDG679770
NORTHROP GRUMMAN UNDERSEA SYSTEMS OCEANIC SITE, Annapolis, MD: NPDES MDG679770 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
NORTHROP GRUMMAN UNDERSEA SYSTEMS OCEANIC SITE, held by NORTHROP GRUMMAN SYSTEMS CORP., holds NPDES permit MDG679770, which discharges to Severn River, West Cheapeake Bay. EPA’s file records it issued August 22, 2023 and expiring July 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for NORTHROP GRUMMAN UNDERSEA SYSTEMS OCEANIC SITE: its NPDES ID, its permit type and status, its dates, its address in Annapolis, Maryland, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MDG679770.
Identity
| Facility as filed | NORTHROP GRUMMAN UNDERSEA SYSTEMS OCEANIC SITE |
|---|---|
| Permittee as filed | NORTHROP GRUMMAN SYSTEMS CORP. |
| NPDES ID | MDG679770 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 22, 2023 |
| Expiration date | July 31, 2025 |
| Issuing agency | MARYLAND DEPARTMENT OF THE ENVIRONMENT |
| Address | Annapolis, MD 21409 |
| Receiving water | SEVERN RIVER, WEST CHEAPEAKE BAY |
| Subwatershed | Whitehall Creek-Severn River-Chesapeake Bay (HUC 020600040203) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MDG679770.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MDG679770.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MDG679770.
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- One state — $4,990/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MDG679770 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.