Clean Water Act discharge permit · NPDES GAP050302
HERTY ADVANCED MATERIALS DEVELOPMENT CENTER, Savannah, GA: NPDES GAP050302 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
HERTY ADVANCED MATERIALS DEVELOPMENT CENTER, held by Herty Advanced Materials Development Center, holds NPDES permit GAP050302. EPA’s file records it issued July 24, 2015 and expiring July 31, 2020. 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 | HERTY ADVANCED MATERIALS DEVELOPMENT CENTER |
|---|---|
| Permittee as filed | Herty Advanced Materials Development Center |
| NPDES ID | GAP050302 |
| Permit status | Effective |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | July 24, 2015 |
| Expiration date | July 31, 2020 |
| Address | Savannah, GA 31408 |
| Receiving water impaired | 303(D) Listed |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 8Under a numeric limit
- 8With a violation of any kind
- 3With 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 | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 4 | 20 | 16 | November 30, 2016 | 33% over the limit |
| Zinc, total [as Zn] | 0 | 13 | 13 | July 31, 2023 | 450% over the limit |
| pH | 4 | 15 | 11 | June 30, 2022 | |
| Chemical oxygen demand [COD] | 4 | 7 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 5 | 0 | ||
| BOD, 5-day | 4 | 4 | 0 | ||
| Solids, total suspended | 4 | 4 | 0 | ||
| Solids, sludge, total, dry weight | 1 | 3 | 0 | ||
| Oil & Grease | 2 | 0 | 0 |
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 GAP050302.
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, GAP050302.
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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 GAP050302 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.