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Clean Water Act discharge permit · NPDES NJG287717

GMP CONTRACTING, LLC, SOUTH PLAINFIELD, South Plainfield Boro, NJ: NPDES NJG287717 discharge permit, effluent exceedances, inspections, penalties

GMP CONTRACTING, LLC, SOUTH PLAINFIELD, held by GMP CONTRACTING LLC, holds NPDES permit NJG287717. EPA’s file records it issued October 23, 2018 and expiring February 28, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for GMP CONTRACTING, LLC, SOUTH PLAINFIELD: its NPDES ID, its permit type and status, its dates, its address in South Plainfield Boro, New Jersey. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES NJG287717.

Identity

Facility as filedGMP CONTRACTING, LLC, SOUTH PLAINFIELD
Permittee as filedGMP CONTRACTING LLC
NPDES IDNJG287717
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedOctober 23, 2018
Expiration dateFebruary 28, 2022
AddressSouth Plainfield Boro, NJ 07080
Receiving water impaired303(D) Listed
SubwatershedGreen Brook (HUC 020301050504)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES NJG287717.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES NJG287717.

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, NJG287717.

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  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 NJG287717 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.