Clean Water Act discharge permit · NPDES NHG360028
GREEN MOUNTAIN POWER - LOWER GREAT FALLS (SOMERSWORTH) HYDROELECTRIC PROJECT, Somersworth, NH: NPDES NHG360028 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 3Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GREEN MOUNTAIN POWER - LOWER GREAT FALLS (SOMERSWORTH) HYDROELECTRIC PROJECT, held by GREEN MOUNTAIN POWER-LOWER GREAT FALLS (SOMERSWORTH) HYDROELECTRIC PROJECT, holds NPDES permit NHG360028, which discharges to Salmon Falls River. EPA’s file records it issued September 27, 2012 and expiring December 31, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GREEN MOUNTAIN POWER - LOWER GREAT FALLS (SOMERSWORTH) HYDROELECTRIC PROJECT |
|---|---|
| Permittee as filed | GREEN MOUNTAIN POWER-LOWER GREAT FALLS (SOMERSWORTH) HYDROELECTRIC PROJECT |
| NPDES ID | NHG360028 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 27, 2012 |
| Expiration date | December 31, 2014 |
| Address | Somersworth, NH 03878 |
| Receiving water | Salmon Falls River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Salmon Falls River (HUC 010600030507) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 3Pollutants on file
- 3Under a numeric limit
- 3With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| pH | 2 | 4 | 0 | ||
| Oil & Grease | 1 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES NHG360028.
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 NHG360028.
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 NHG360028 there.
Nearby on the register
- Discharge permits in Somersworth
- Every permit record in Somersworth, A to Z
- Discharge permits in New Hampshire
- Every permit record in New Hampshire, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.