Clean Water Act discharge permit · NPDES RIRNE0393

MAGSEAL, Warren, RI: NPDES RIRNE0393 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MAGSEAL, held by Magseal Corporation, holds NPDES permit RIRNE0393. EPA’s file records it issued January 26, 2022 and expiring January 26, 2027.

MAGSEAL, Warren, Rhode Island: Coverage under a general permit RIRNE0393, held by Magseal Corporation; Industrial stormwater; Effective; issued January 26, 2022, term to January 26, 2027, by RIDEM.

Rhode Island holds 370 Industrial stormwater coverages of this permit type in EPA’s file; 277 were issued before RIRNE0393.

Coverages issued nearest RIRNE0393

December 21, 2021: SOUTH KINGSTOWN WASTEWATER TREATMENT FACILITY, Narragansett, RIRNE0389, held by Town of South Kingstown
December 28, 2021: ASPEN AEROGELS, East Providence, RIR50C013, held by ASPEN AEROGELS RHODE ISLAND, LLC
December 29, 2021: INTERPLEX ENGINEERED PRODUCTS, East Providence, RIRNE0390, held by Interplex Engineered Products
January 20, 2022: AMETEK SCP, INC., Westerly, RIRNE0391
January 21, 2022: MORGAN MILL METALS, North Kingstown, RIRNE0392, held by Morgan Mill Metals, LLC
February 11, 2022: HONEYWELL INTERNATIONAL, Woonsocket, RIRNE0396, held by Honeywell International
February 14, 2022: MATERIAL SAMPLING TECHNOLOGIES, North Smithfield, RIRNE0397, held by Q Tech, LLC d/b/a Material Sampling Technologies
February 14, 2022: ONSEMI, East Greenwich, RIRNE0398, held by Semiconductor Components Industries LLC dba onsemi
February 23, 2022: D'AGOSTINOS AUTO SALES & SALVAGE, INC., North Providence, RIR50M017, held by D'AGOSTINO AUTO SALES & SALVAGE, INC
April 8, 2022: SAFE HARBOR ALLEN HARBOR, North Kingstown, RIRNE0399, held by Safe Harbor Marinas

MAGSEAL among its neighbors

EPA’s permit file holds 12 discharge permits in the Point Judith Pond-Frontal Block Island Sound subwatershed (HUC 010900050402), RIRNE0393 among them.

Other permits in the Point Judith Pond-Frontal Block Island Sound subwatershed (HUC 010900050402)

DAVE HANDRIGAN SEAFOOD, INC., Narragansett: RI0023311, minor permit, discharging to POINT JUDITH POND, permit term to March 31, 2013
GREAT ISLAND BRIDGE NO. 499, Narragansett: RIR101054, minor permit, permit term to May 31, 2018
KSJ SEAFOOD, INC., Galilee: RI0023949, minor permit, discharging to PT. JUDITH POND, permit term to June 30, 2020
POINT JUDITH MARINA LLC, Wakefield: RIR50Q007, minor permit, discharging to POINT JUDITH POND, permit term to May 2, 2024
POINT VIEW MARINA, Wakefield: RIR50Q026, minor permit, discharging to POINT JUDITH POND, permit term to May 2, 2024
RAM POINT MARINA, Wakefield: RIR50R009, minor permit, discharging to POINT JUDITH POND, permit term to May 2, 2024
SEAFREEZE SHORESIDE, Narragansett: RI0021695, minor permit, discharging to POINT JUDITH POND, permit term to March 31, 2013
SHM SILVER SPRING LLC, Wakefield: RIR50Q009, minor permit, discharging to POINT JUDITH POND, permit term to May 2, 2024
STONE COVE MARINA INC, Wakefield: RIR50Q013, minor permit, discharging to UPPER POINT JUDITH POND, permit term to May 2, 2024
THE TOWN DOCK, Narragansett: RIR50U003, minor permit, discharging to POINT JUDITH POND, permit term to August 14, 2018

What the register holds for MAGSEAL: its NPDES ID, its permit type and status, its dates, its address in Warren, Rhode Island. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES RIRNE0393.

Identity

Facility as filed	MAGSEAL
Permittee as filed	Magseal Corporation
NPDES ID	RIRNE0393
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Industrial stormwater
Issued	January 26, 2022
Expiration date	January 26, 2027
Issuing agency	RIDEM
Address	Warren, RI 02885
Subwatershed	Point Judith Pond-Frontal Block Island Sound (HUC 010900050402)

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 RIRNE0393.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES RIRNE0393.

Inspections

EPA’s inspection file holds no inspection for NPDES RIRNE0393.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES RIRNE0393.

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, RIRNE0393.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

MAGSEAL is one of 2 storm water industrial permits on EPA's NPDES register in Warren. It is one of 12 NPDES permits in the Point Judith Pond-Frontal Block Island Sound subwatershed. The permit has 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.