NPDES VAG250058 · Clean Water Act
AIRGAS MERCHANT GASES - CHESTER ASU PLANT, Chester, VA: NPDES VAG250058 discharge permit, effluent exceedances, inspections, penalties
AIRGAS MERCHANT GASES - CHESTER ASU PLANT, Chester, Virginia: General permit coverage VAG250058, held by Airgas USA, LLC; Administratively continued; issued March 2, 2018, term to March 1, 2023, by Virginia; discharges to Appomattox River-Ashton Creek; Industrial Gas Manufacturing.
5 of the 8 pollutants listed for NPDES VAG250058 have no violation or effluent exceedance.
- Chlorine, total residual: 1 limit, 22 violations of any kind, 22 effluent exceedances, latest June 30, 2026, largest 3,445% over the limit.
- Copper, total recoverable: 1 limit, 4 violations of any kind, 4 effluent exceedances, latest December 31, 2024, largest 67% over the limit.
- Temperature, water deg. centigrade: 1 limit, 2 violations of any kind, 2 effluent exceedances, latest September 30, 2023, largest 9% over the limit.
- pH: 2 limits.
- Nitrogen, ammonia total [as N]: 1 limit.
- Phosphorus, total [as P]: 1 limit.
- Zinc, total recoverable: 1 limit.
- Flow, in conduit or thru treatment plant: 1 limit.
- August 10, 2026: Letter of Violation/ Warning Letter (State).
- March 11, 2026: Letter of Violation/ Warning Letter (State).
Other permits held by Airgas USA, LLC
- AIRGAS MERCHANT GASES - CHESTER ASU PLANT, Chester: VAR051244, issued 2019-07-01
- AIRGAS USA LLC - HOPEWELL, Hopewell: VAR051497, issued 2019-07-01
- AIRGAS RICHMOND HPN/MATHESON DISTRIBUTION, Richmond: VAR051613, issued 2019-07-01
AIRGAS MERCHANT GASES - CHESTER ASU PLANT among its neighbors
Its county: 59, 7 major; VAG250058 is minor permit.
Other permits in the county
- ADDISON EVANS WATER PRODUCTION AND LAB FACILITY, Midlothian: VA0006254, minor, term to 2026-04-30
- ADDISON-EVANS WATER PRODUCTION & LABORATORY FACILI, Midlothian: VAR10U776, minor, term to 2029-06-30
- ADVANSIX RESINS AND CHEMICALS LLC - CHESTERFIELD, Chester: VA0005312, major, term to 2018-03-31
- AIRGAS MERCHANT GASES - CHESTER ASU PLANT, Chester: VAR051244, minor, term to 2024-06-30
- AMAZON SERVICES LLC - SVA4, Chester: VAR052682, minor, term to 2029-06-30
- AMCOR SPECIALTY CARTONS RICHMOND, Chester: VAR051538, minor, term to 2024-06-30
- APG MID-ATLANTIC RICHMOND, Richmond: VAG110303, minor, term to 2023-12-31
- APPOMATTOX RIVER WATER AUTHORITY, Petersburg: VA0005819, major, term to 2023-04-30
- BRIGHTPOINT COMMUNITY COLLEGE MS4, Chesterfield County: VAR040110, minor, term to 2023-10-31
- CHESTERFIELD COUNTY AIRPORT, Richmond: VAR051129, minor, term to 2024-06-30
Identity
| Facility | AIRGAS MERCHANT GASES - CHESTER ASU PLANT |
|---|---|
| Permittee | Airgas USA, LLC |
| NPDES ID | VAG250058 |
| Status | Administratively continued |
| Type | General permit coverage |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | March 2, 2018 |
| Expires | March 1, 2023 |
| Agency | Virginia |
| Address | Chester, VA 23836 |
| Receiving water | Appomattox River-Ashton Creek |
| NAICS | 325120 – Industrial Gas Manufacturing |
| SIC | 2813 – Industrial Gases |
NPDES VAG250058: effluent limits and exceedances
AIRGAS MERCHANT GASES - CHESTER ASU PLANT (NPDES VAG250058): 8 pollutants on file, 8 limited; 3 with a violation of any kind, 3 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 22 | 22 | June 30, 2026 | 3,445% over the limit |
| Copper, total recoverable | 1 | 4 | 4 | December 31, 2024 | 67% over the limit |
| Temperature, water deg. centigrade | 1 | 2 | 2 | September 30, 2023 | 9% over the limit |
| pH | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Zinc, total recoverable | 1 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 0 | 0 |
NPDES VAG250058: inspections, violations and enforcement
NPDES VAG250058: 2 informal enforcement actions
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2026 | Letter of Violation/ Warning Letter | State |
| March 11, 2026 | Letter of Violation/ Warning Letter | State |
NPDES VAG250058 (AIRGAS MERCHANT GASES - CHESTER ASU PLANT): no single-event violation, inspection and formal enforcement action on file.
Watch NPDES VAG250058
NPDES VAG250058: one email when its EPA record changes — $99/month.
Permits near NPDES VAG250058
NPDES VAG250058: 8 pollutant rows, 2 dated events; ICIS-NPDES download, loaded October 14, 2026.