NPDES DE0000523 · Clean Water Act
DPIF2 DE 1-2, Wilmington, DE: NPDES DE0000523 discharge permit, effluent exceedances, inspections, penalties
DPIF2 DE 1-2, Wilmington, Delaware: Individual permit DE0000523, held by Boxwood Industrial Park; Administratively continued; issued November 1, 2016, term to October 31, 2021.
- BOD, 5-day, 20 deg. C: 4 limits, 24 violations of any kind, 11 effluent exceedances, latest March 31, 2020, largest 145% over the limit.
- pH: 2 limits, 11 violations of any kind, 5 effluent exceedances, latest December 31, 2020.
- Nitrogen, total [as N]: 24 limits, 228 violations of any kind.
- Phosphorus, total [as P]: 24 limits, 228 violations of any kind.
- Enterococci: group D, MF trans, M-E, EIA: 6 limits, 83 violations of any kind.
- Toluene: 8 limits, 76 violations of any kind.
- Chlorobenzene: 8 limits, 76 violations of any kind.
- Ethylbenzene: 8 limits, 76 violations of any kind.
- Arsenic, total [as As]: 8 limits, 72 violations of any kind.
- Chromium, total [as Cr]: 8 limits, 72 violations of any kind.
- Benzene: 8 limits, 72 violations of any kind.
- Lead, total [as Pb]: 4 limits, 13 violations of any kind.
- Oil & Grease: 4 limits, 9 violations of any kind.
- Flow, in conduit or thru treatment plant: 2 limits, 6 violations of any kind.
- Hardness, total [as CaCO3]: 4 limits, 4 violations of any kind.
- Zinc, total [as Zn]: 4 limits, 4 violations of any kind.
- Solids, total suspended: 0 limits, 1 violation of any kind.
- Surfactants [MBAS]: 0 limits, 1 violation of any kind.
- October 9, 2026: Notice of Violation (State).
- May 16, 2026: Permit Violations - Failure to Submit Timely Permit Renewal Application (ST6).
- May 6, 2026: Letter of Violation/ Warning Letter (State).
- April 21, 2025: Effluent Violations - Unauthorized Discharge (ST6).
- September 26, 2019: WW Storm Water Non-Construction - Failure to Conduct Inspections (ST6).
DPIF2 DE 1-2 among its neighbors
2 discharge permits are in the Little Mill Creek subwatershed (HUC 020402050504); DE0000523 is one. Its county: 36, 2 major; DE0000523 is minor permit.
Other permits in the Little Mill Creek subwatershed (HUC 020402050504)
- NEW ADMINISTRATION BUILDING - VA MEDICAL CENTER, Wilmington: DER10F003, minor, term to 2022-02-15
Identity
| Facility | DPIF2 DE 1-2 |
|---|---|
| Permittee | Boxwood Industrial Park |
| NPDES ID | DE0000523 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | November 1, 2016 |
| Expires | October 31, 2021 |
| Address | Wilmington, DE 19804 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Little Mill Creek (HUC 020402050504) |
| Other EPA IDs (FRS) | RCRA handler DEN201100002 |
NPDES DE0000523: effluent limits and exceedances
DPIF2 DE 1-2 (NPDES DE0000523): 18 pollutants on file, 16 limited; 18 with a violation of any kind, 2 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 4 | 24 | 11 | March 31, 2020 | 145% over the limit |
| pH | 2 | 11 | 5 | December 31, 2020 | |
| Nitrogen, total [as N] | 24 | 228 | 0 | ||
| Phosphorus, total [as P] | 24 | 228 | 0 | ||
| Enterococci: group D, MF trans, M-E, EIA | 6 | 83 | 0 | ||
| Toluene | 8 | 76 | 0 | ||
| Chlorobenzene | 8 | 76 | 0 | ||
| Ethylbenzene | 8 | 76 | 0 | ||
| Arsenic, total [as As] | 8 | 72 | 0 | ||
| Chromium, total [as Cr] | 8 | 72 | 0 | ||
| Benzene | 8 | 72 | 0 | ||
| Lead, total [as Pb] | 4 | 13 | 0 | ||
| Oil & Grease | 4 | 9 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Hardness, total [as CaCO3] | 4 | 4 | 0 | ||
| Zinc, total [as Zn] | 4 | 4 | 0 | ||
| Solids, total suspended | 0 | 1 | 0 | ||
| Surfactants [MBAS] | 0 | 1 | 0 |
NPDES DE0000523: inspections, violations and enforcement
NPDES DE0000523: 3 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 16, 2026 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| April 21, 2025 | Effluent Violations - Unauthorized Discharge | ST6 |
| September 26, 2019 | WW Storm Water Non-Construction - Failure to Conduct Inspections | ST6 |
NPDES DE0000523: 2 informal enforcement actions
| Date | What EPA recorded | Agency |
|---|---|---|
| October 9, 2026 | Notice of Violation | State |
| May 6, 2026 | Letter of Violation/ Warning Letter | State |
NPDES DE0000523 (DPIF2 DE 1-2): no inspection and formal enforcement action on file.
Watch NPDES DE0000523
NPDES DE0000523: one email when its EPA record changes — $99/month.
Permits near NPDES DE0000523
NPDES DE0000523: 18 pollutant rows, 5 dated events; ICIS-NPDES download, loaded September 15, 2026.