Clean Water Act discharge permit · NPDES OK0100439
MYALL, LLC, Pryor, OK: NPDES OK0100439 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
MYALL, LLC, held by Myall, LLC, holds NPDES permit OK0100439, which discharges to 121600010280 Neosho River. EPA’s file records it issued June 12, 2020 and expiring June 30, 2025. 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 | MYALL, LLC |
|---|---|
| Permittee as filed | Myall, LLC |
| NPDES ID | OK0100439 |
| 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 12, 2020 |
| Expiration date | June 30, 2025 |
| Issuing agency | OKDEQ |
| Address | Pryor, OK 74361 |
| Receiving water | 121600010280 Neosho River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Crutchfield Branch-Neosho River (HUC 110702090508) |
| NAICS | 518210 – Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services |
| SIC | 7374 – Data Processing And Preparation |
| Other EPA IDs (FRS) | RCRA handler OKR000025809; ICIS-AIR source OK0000004009700040 |
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
- 4Pollutants on file
- 4Under a numeric limit
- 3With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Chlorine, free available | 4 | 1 | 1 | June 30, 2022 | 395% over the limit |
| pH | 4 | 2 | 0 | ||
| Oxidants, total residual | 2 | 1 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES OK0100439.
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 OK0100439 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.