NPDES IL0048151 · Clean Water Act
CONSTELLATION GENERATION COMPANY LLC, Marseilles, IL: NPDES IL0048151 discharge permit, effluent exceedances, inspections, penalties
CONSTELLATION GENERATION COMPANY LLC, Marseilles, Illinois: Individual permit IL0048151, held by EXELON GENERATION CO LLC; Administratively continued; issued July 5, 2013, term to July 31, 2018; discharges to ILLINOIS RIVER.
3 of the 11 pollutants listed for NPDES IL0048151 have no violation or effluent exceedance.
- Temperature, water deg. fahrenheit: 2 limits, 6 violations of any kind, 6 effluent exceedances, latest September 30, 2014, largest 3% over the limit.
- pH: 6 limits, 7 violations of any kind, 3 effluent exceedances, latest March 31, 2009.
- Solids, total suspended: 14 limits, 18 violations of any kind.
- Flow, in conduit or thru treatment plant: 12 limits, 8 violations of any kind.
- BOD, carbonaceous [5 day, 20 C]: 4 limits, 8 violations of any kind.
- Oil and grease: 6 limits, 4 violations of any kind.
- Zinc, total [as Zn]: 2 limits, 2 violations of any kind.
- Oxidants, total residual: 1 limit, 2 violations of any kind.
- Chlorine, total residual: 2 limits.
- Chlorination duration: 1 limit.
- Chlorine usage: 1 limit.
Other permits held by EXELON GENERATION CO LLC
- SERVICES TRAINING CENTER, Warrenville: IL0063100, issued 2005-05-17
CONSTELLATION GENERATION COMPANY LLC among its neighbors
14 discharge permits are in the South Kickapoo Creek-Illinois River subwatershed (HUC 071200050802); IL0048151 is one. Its county: 156, 10 major; IL0048151 is major permit.
Other permits in the South Kickapoo Creek-Illinois River subwatershed (HUC 071200050802)
- 4 STAR MHP STP, Marseilles: IL0070351, minor, term to 2021-08-31
- BERENEICE SEEBOLD PRIVATE SEWAGE DISPOSAL SYSTEM, Marseilles: ILG620289, minor, term to 2025-09-30
- CONSTELLATION GENERATION COMPANY, LLC - LA SALLE COUNTY GENERATING STATION, Marseilles: ILG870024, minor, term to 2021-10-31
- HAUSKEN OIL CO., Marseilles: ILR005208, minor, term to 2008-06-01
- ILLINI STATE PARK STP, Marseilles: IL0070017, minor, term to 2023-06-30
- INDEPENDENCE TUBE CORPORATION - MARSEILLES DIV, Marseilles: IL0078069, minor, term to 2011-07-31
- LASALLE EPU COOLING TOWER PROJECT, Marseilles: ILR10ZGB5, minor, term to 2028-08-31
- LASALLE POWER LINE PROJECT - TREE REMOVAL, Marseilles: ILR10ZGH8, minor, term to 2028-08-31
- LASALLE PROJECT ADJACENT AREA TREE REMOVAL, Marseilles: ILR10ZGLG, minor, term to 2028-08-31
- NUTRIEN US, LLC - MARSEILLES TERMINAL, Marseilles: IL0001708, minor, term to 2022-08-31
Identity
| Facility | CONSTELLATION GENERATION COMPANY LLC |
|---|---|
| Permittee | EXELON GENERATION CO LLC |
| NPDES ID | IL0048151 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Non-POTW |
| Issued | July 5, 2013 |
| Expires | July 31, 2018 |
| Address | Marseilles, IL 61341 |
| Receiving water | ILLINOIS RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | South Kickapoo Creek-Illinois River (HUC 071200050802) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler ILD000803643; ICIS-AIR source IL000099802AAA |
NPDES IL0048151: effluent limits and exceedances
CONSTELLATION GENERATION COMPANY LLC (NPDES IL0048151): 11 pollutants on file, 11 limited; 8 with a violation of any kind, 2 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Temperature, water deg. fahrenheit | 2 | 6 | 6 | September 30, 2014 | 3% over the limit |
| pH | 6 | 7 | 3 | March 31, 2009 | |
| Solids, total suspended | 14 | 18 | 0 | ||
| Flow, in conduit or thru treatment plant | 12 | 8 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 4 | 8 | 0 | ||
| Oil and grease | 6 | 4 | 0 | ||
| Zinc, total [as Zn] | 2 | 2 | 0 | ||
| Oxidants, total residual | 1 | 2 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Chlorination duration | 1 | 0 | 0 | ||
| Chlorine usage | 1 | 0 | 0 |
NPDES IL0048151: inspections, violations and enforcement
NPDES IL0048151 (CONSTELLATION GENERATION COMPANY LLC): no single-event violation, inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES IL0048151
NPDES IL0048151: one email when its EPA record changes — $99/month.
Permits near NPDES IL0048151
NPDES IL0048151: 11 pollutant rows, 0 dated events; ICIS-NPDES download, loaded October 14, 2026.