Velarion Records
Follow this permit Velarion Records emails you this permit’s record, cited to the public filing, and tells you when the register changes it. Free.
We’ll email you a link to confirm. The continuous daily watch on every change is the paid alert. Unsubscribe any time.
Also free: The Pay Desk, the weekly executive pay briefing.

Clean Water Act discharge permit · NPDES INRM00097

GAF MATERIALS CORPORATION TPO FACILITY, Mount Vernon, IN: NPDES INRM00097 discharge permit, effluent exceedances, inspections, penalties

GAF MATERIALS CORPORATION TPO FACILITY, held by GAF Materials Corporation TPO Facility, holds NPDES permit INRM00097, which discharges to Ohio River. EPA’s file records it issued August 17, 2020 and expiring November 14, 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 GAF MATERIALS CORPORATION TPO FACILITY: its NPDES ID, its permit type and status, its dates, its address in Mount Vernon, Indiana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES INRM00097.

Identity

Facility as filedGAF MATERIALS CORPORATION TPO FACILITY
Permittee as filedGAF Materials Corporation TPO Facility
NPDES IDINRM00097
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedAugust 17, 2020
Expiration dateNovember 14, 2025
Issuing agencyIDEM
AddressMount Vernon, IN 47620
Receiving waterOhio River
SubwatershedIndian Creek-Big Creek (HUC 051201130709)
Other EPA IDs (FRS)RCRA handler INR000117192

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES INRM00097.

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 INRM00097.

Inspections

EPA’s inspection file holds no inspection for NPDES INRM00097.

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 INRM00097.

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, INRM00097.

Start the watch

How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • 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 INRM00097 there.

Nearby on the register

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

What this page shows

The GAF Materials Corporation TPO Facility in Mount Vernon, Posey County, Indiana, is one of 10 storm water industrial permits in Posey County on EPA's NPDES register, and it is one of 6 NPDES permits in the Indian Creek-Big Creek subwatershed, this one included. Of those 10 Posey County storm water industrial permits, 70.0% were issued earlier than this one, and none of them carries a violation on file, with 0.0% of them showing one.