Clean Water Act discharge permit · NPDES OR0030589
SILTRONIC CORPORATION, Portland, OR: NPDES OR0030589 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 16Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
SILTRONIC CORPORATION holds NPDES permit OR0030589, which discharges to Willamette River. EPA’s file records it issued August 1, 2009 and expiring July 1, 2014. 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 | SILTRONIC CORPORATION |
|---|---|
| Permittee as filed | SILTRONIC CORPORATION |
| NPDES ID | OR0030589 |
| 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 |
| Issued | August 1, 2009 |
| Expiration date | July 1, 2014 |
| Address | Portland, OR 97210 |
| Receiving water | WILLAMETTE RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Willamette River (HUC 170900120202) |
| Other EPA IDs (FRS) | RCRA handler ORD096253737 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 16Pollutants on file
- 16Under a numeric limit
- 4With a violation of any kind
- 2With 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 range excursions, > 60 minutes | 1 | 2 | 2 | April 30, 2025 | 2,147,483,650% over the limit |
| Solids, total suspended | 4 | 1 | 1 | November 30, 2024 | 47% over the limit |
| Temperature, water deg. fahrenheit | 1 | 1 | 0 | ||
| pH range excursions, monthly total accum | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 4 | 0 | 0 | ||
| Phosphate, total [as PO4] | 4 | 0 | 0 | ||
| Fluoride, total [as F] | 4 | 0 | 0 | ||
| Chromium, total [as Cr] | 4 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Chlorine, free available | 2 | 0 | 0 | ||
| Excess thermal load | 2 | 0 | 0 | ||
| Bromine, reported as the element | 2 | 0 | 0 | ||
| Report due [yrmoda] | 2 | 0 | 0 | ||
| Turbidity | 1 | 0 | 0 | ||
| Total toxic organics [TTO] [40 CFR469] | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 11, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 1, 2019 | Monitoring Violations - Failure to Monitor for Toxicity Requirements | 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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OR0030589.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 OR0030589 there.
Nearby on the register
- Discharge permits in Portland
- Every permit record in Portland, A to Z
- Discharge permits in Oregon
- Every permit record in Oregon, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.