Clean Water Act discharge permit · NPDES MAR10062F
0 HIGH STREET & 38 GROTON HARVARD ROAD, Ayer, MA: NPDES MAR10062F discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
0 HIGH STREET & 38 GROTON HARVARD ROAD, held by Onyx Corporation, holds NPDES permit MAR10062F. EPA’s file records it issued December 18, 2025 and expiring February 16, 2027. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for 0 HIGH STREET & 38 GROTON HARVARD ROAD: its NPDES ID, its permit type and status, its dates, its address in Ayer, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR10062F.
Identity
| Facility as filed | 0 HIGH STREET & 38 GROTON HARVARD ROAD |
|---|---|
| Permittee as filed | Onyx Corporation |
| NPDES ID | MAR10062F |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Construction stormwater |
| Issued | December 18, 2025 |
| Expiration date | February 16, 2027 |
| Issuing agency | U.S. EPA |
| Address | Ayer, MA 01432 |
| Subwatershed | Mulpus Brook-Nashua River (HUC 010700040205) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MAR10062F.
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 MAR10062F.
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.
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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 MAR10062F there.
Nearby on the register
- Discharge permits in Ayer
- Every permit record in Ayer, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.