Clean Water Act discharge permit · NPDES ALR10C4MN
PROPULSION SYSTEMS LAB, Hunstville, AL: NPDES ALR10C4MN discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
PROPULSION SYSTEMS LAB, held by Hensel Phelps Construction Co., holds NPDES permit ALR10C4MN. EPA’s file records it issued December 4, 2023 and expiring March 31, 2026. 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 PROPULSION SYSTEMS LAB: its NPDES ID, its permit type and status, its dates, its address in Hunstville, Alabama. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES ALR10C4MN.
Identity
| Facility as filed | PROPULSION SYSTEMS LAB |
|---|---|
| Permittee as filed | Hensel Phelps Construction Co. |
| NPDES ID | ALR10C4MN |
| 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 |
| Program | Construction stormwater |
| Issued | December 4, 2023 |
| Expiration date | March 31, 2026 |
| Issuing agency | State |
| Address | Hunstville, AL 35808 |
| Subwatershed | Lower Huntsville Spring Branch (HUC 060300020503) |
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 ALR10C4MN.
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 ALR10C4MN.
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 ALR10C4MN there.
Nearby on the register
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- Every permit record in Alabama, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.