Clean Water Act discharge permit · NPDES SC0049107
AMERESCO SRS BIOMASS COGENERATION FACILITY, Aiken, SC: NPDES SC0049107 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
AMERESCO SRS BIOMASS COGENERATION FACILITY, held by AMERESCO, holds NPDES permit SC0049107. EPA’s file records it issued June 9, 2011 and expiring June 30, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AMERESCO SRS BIOMASS COGENERATION FACILITY |
|---|---|
| Permittee as filed | AMERESCO |
| NPDES ID | SC0049107 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 9, 2011 |
| Expiration date | June 30, 2016 |
| Issuing agency | State |
| Address | Aiken, SC 29808 |
| Subwatershed | Lower Upper Three Runs (HUC 030601060506) |
| NAICS | 221117 – Biomass Electric Power Generation |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | ICIS-AIR source SC00000800144 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 14Pollutants on file
- 14Under a numeric limit
- 12With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Length of longest pH excursion | 1 | 6 | 3 | January 31, 2026 | 250% over the limit |
| Solids, total suspended | 3 | 11 | 2 | September 30, 2025 | 24% over the limit |
| % of time exceeding pH limits | 1 | 5 | 2 | August 31, 2016 | 136% over the limit |
| Chlorine, free available | 2 | 7 | 1 | January 31, 2014 | 133% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 10 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 9 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Oil & Grease | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Chlorine, total residual | 2 | 6 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 3 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 3 | 0 | ||
| LC50 Static Renewal 48Hr Acute Daphnia ambigua | 1 | 0 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Daphnia ambigua | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 28, 2022 | Management Practice Violations - Failure to Maintain Records | ST6 |
| March 28, 2022 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
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
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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 SC0049107 there.
Nearby on the register
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- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.