Clean Water Act discharge permit · NPDES MO0105783
DYNO NOBEL - LOMO PLANT, Louisiana, MO: NPDES MO0105783 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
DYNO NOBEL - LOMO PLANT, held by Dyno Nobel, LOMO Plant, holds NPDES permit MO0105783, which discharges to Tributary To Buffalo Creek. EPA’s file records it issued July 24, 2018 and expiring July 31, 2023. 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.
Identity
| Facility as filed | DYNO NOBEL - LOMO PLANT |
|---|---|
| Permittee as filed | Dyno Nobel, LOMO Plant |
| NPDES ID | MO0105783 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | July 24, 2018 |
| Expiration date | July 31, 2023 |
| Address | Louisiana, MO 63353 |
| Receiving water | Tributary to Buffalo Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Buffalo Creek-Mississippi River (HUC 071100040702) |
| Other EPA IDs (FRS) | RCRA handler MOD981116734; ICIS-AIR source MO0000002916300031 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 27Pollutants on file
- 23Under a numeric limit
- 18With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Nitrogen, nitrate total [as N] | 4 | 84 | 20 | August 31, 2020 | 227% over the limit |
| Nitrogen, ammonia total [as N] | 14 | 122 | 18 | October 31, 2024 | 160% over the limit |
| pH | 4 | 72 | 6 | August 31, 2020 | |
| Temperature, water deg. fahrenheit | 26 | 101 | 5 | July 31, 2019 | 35% over the limit |
| Solids, total suspended | 4 | 104 | 4 | July 31, 2020 | 43% over the limit |
| Day - max excursion time [min] | 2 | 2 | 2 | July 31, 2019 | 467% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 131 | 1 | October 31, 2005 | 145% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 35 | 1 | July 31, 2008 | 100% over the limit |
| Month excursion time [min] | 4 | 2 | 1 | September 30, 2018 | 51% over the limit |
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 33 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 12 | 0 | ||
| Nitrogen, total [as N] | 4 | 8 | 0 | ||
| Chloride | 4 | 4 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 4 | 0 | ||
| Iron, total recoverable | 2 | 4 | 0 | ||
| Aluminum, total recoverable | 2 | 4 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Sulfate [as S] | 2 | 0 | 0 | ||
| Solids, settleable | 2 | 0 | 0 | ||
| Temp. diff. between up/down stream deg. F | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Chlorides + Sulfates | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 5, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 28, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| June 30, 2021 | Effluent Violations - Numeric effluent violation | 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.
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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 MO0105783 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.