Clean Water Act discharge permit · NPDES OR0026905
COLUMBIA BOULEVARD STP, Portland, OR: NPDES OR0026905 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
COLUMBIA BOULEVARD STP, held by PORTLAND, CITY OF, holds NPDES permit OR0026905, which discharges to Columbia River. EPA’s file records it issued May 26, 2011 and expiring June 30, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | COLUMBIA BOULEVARD STP |
|---|---|
| Permittee as filed | PORTLAND, CITY OF |
| NPDES ID | OR0026905 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 26, 2011 |
| Expiration date | June 30, 2016 |
| Address | Portland, OR 97203 |
| Receiving water | COLUMBIA RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Columbia Slough-Frontal Columbia River (HUC 170900120201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 24Pollutants on file
- 20Under a numeric limit
- 18With a violation of any kind
- 7With 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, total residual | 4 | 25 | 21 | October 31, 2022 | 196% over the limit |
| Solids, total suspended | 6 | 23 | 7 | July 31, 2021 | 156% over the limit |
| pH range excursions, > 60 minutes | 0 | 8 | 7 | November 30, 2023 | 2,147,483,650% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 25 | 5 | October 31, 2022 | 64% over the limit |
| E. coli | 4 | 17 | 3 | December 31, 2024 | 99,999% over the limit |
| pH range excursions, monthly total accum | 0 | 4 | 3 | November 30, 2023 | 137% over the limit |
| pH | 4 | 3 | 1 | September 30, 2001 | |
| Oil & Grease | 2 | 10 | 0 | ||
| Solids, total dissolved | 2 | 10 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 9 | 0 | ||
| Temperature, water deg. centigrade | 2 | 5 | 0 | ||
| Chlorine usage | 2 | 5 | 0 | ||
| Alkalinity, total [as CaCO3] | 3 | 4 | 0 | ||
| Solids, suspended percent removal | 2 | 3 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 3 | 0 | ||
| BOD, 5-day, percent removal | 2 | 2 | 0 | ||
| Cyanide, free [as free] | 0 | 2 | 0 | ||
| Cyanide, total [as CN] | 0 | 2 | 0 | ||
| Temperature, water deg. fahrenheit | 8 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Phosphate, total [as PO4] | 1 | 0 | 0 | ||
| Flow, maximum during 24 hr period | 1 | 0 | 0 | ||
| Excess thermal load | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 1, 2023 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| July 10, 2020 | WW SSO - Discharge to Waters | ST6 |
| January 1, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 1, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| September 16, 2018 | Permit Violations - Unapproved Operation | ST6 |
| September 12, 2018 | Effluent Violations - Unauthorized Discharge | ST6 |
| September 12, 2018 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| July 1, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| April 1, 2018 | WW SSO - Improper Operation and Maintenance | ST6 |
| July 31, 2017 | WW SSO - Narrative effluent violation | ST6 |
| July 31, 2017 | WW SSO - Discharge without a valid permit (includes satellite systems) | ST6 |
| July 13, 2017 | WW SSO - Discharge to Waters | 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 OR0026905 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.