Clean Water Act discharge permit · NPDES RIR50R016

SENESCO MARINE, LLC, Quonset Point, RI: NPDES RIR50R016 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
0Pollutants with an effluent exceedance

SENESCO MARINE, LLC, held by Senesco Marine, LLC, holds NPDES permit RIR50R016, which discharges to Lower West Passage - Narragansett Bay. EPA’s file records it issued August 1, 2019 and expiring May 2, 2024. 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.

Identity

Facility as filed	SENESCO MARINE, LLC
Permittee as filed	Senesco Marine, LLC
NPDES ID	RIR50R016
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
Program	Industrial stormwater
Issued	August 1, 2019
Expiration date	May 2, 2024
Issuing agency	RIDEM
Address	Quonset Point, RI 02852
Receiving water	LOWER WEST PASSAGE - NARRAGANSETT BAY
Subwatershed	Lower West Passage (HUC 010900040908)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

7Pollutants on file
6Under a numeric limit
7With a violation of any kind
0With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind
Iron, total [as Fe]	4	7
Lead, total [as Pb]	4	7
Zinc, total [as Zn]	4	7
Aluminum, total [as Al]	4	7
Solids, total suspended	4	2
Copper, total [as Cu]	0	2
Oil & Grease	4	1

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES RIR50R016.

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 RIR50R016.

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

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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 RIR50R016 there.

Nearby on the register

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

This public-records page covers NPDES permit RIR50R016, held by SENESCO MARINE, LLC (permittee as filed: Senesco Marine, LLC) for a facility at Quonset Point, RI, discharging to Lower West Passage - Narragansett Bay. The permit is listed as administratively continued, with a Minor Discharger class, issued August 1, 2019 and expiring May 2, 2024, under the industrial stormwater program. The page reports 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.