Passage Data · Check a report · Use it from your AI

Vernonia, City of

Sewage treatment plant, Vernonia, Oregon. NPDES permit OR0022560, in force until Nov 30, 2029. Last 12 months: over a limit 4 times (last December 2025), 6 of 43 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (28 values), outfall 001 form G monthly (6 values), outfall 001 form RW monthly (1 value), outfall 003 form A monthly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 33 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, daily maximum320.7 lb/d≤ 280 lb/d15%
December 2025BOD, 5-day, 20 deg. C, monthly average181.4 lb/d≤ 140 lb/d30%
December 2025BOD, 5-day, 20 deg. C, weekly average320.7 lb/d≤ 210 lb/d53%
December 2025BOD, 5-day, percent removal, monthly average minimum51.9 %≥ 65 %37%

Limits in force (48)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temperature, water deg. centigrademaximum 7-day averagereport only (deg C)all year001
Flow ratemonthly minimumreport only (cfs)May–Nov001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LMay–Nov001
BOD, 5-day, 20 deg. Cmonthly average≤ 140 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 140 lb/dMay–Nov001
BOD, 5-day, 20 deg. Cdaily maximum≤ 280 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
BOD, 5-day, 20 deg. Cdaily maximum≤ 280 lb/dMay–Nov001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 210 lb/dall year001
pHdaily minimum≥ 6.3 SUall year001
pHdaily maximum≤ 9 SUall year001
pHmonthly minimumreport only (SU)all year001
pHmonthly maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 50 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Solids, total suspendedmonthly average≤ 50 mg/LMay–Oct001
Solids, total suspendedmonthly average≤ 230 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Solids, total suspendedmonthly average≤ 230 lb/dMay–Oct001
Solids, total suspendeddaily maximum≤ 460 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Solids, total suspendeddaily maximum≤ 460 lb/dMay–Oct001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedweekly average≤ 80 mg/Lall year001
Solids, total suspendedweekly average≤ 350 lb/dall year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May–Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Nov001
Nitrogen, ammonia total [as N]monthly maximumreport only (mg/L)Jan, Feb, Mar, Apr, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Mar, Apr, May, Nov, Dec001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, May, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)May–Nov001
Flow, in conduit or thru treatment plantdaily maximum≤ .2 MGDMay–Nov001
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDMay–Nov001
Chlorine, total residualmonthly average≤ .05 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Chlorine, total residualdaily maximum≤ .05 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 406 #/100mLall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximumreport only (#/100mL)all year001
Excess thermal loadmaximum 7-day average≤ 8.99 mkcal/dayJan, Feb, Mar, Apr, May, Sep, Oct, Nov, Dec001
Excess thermal loadmaximum 7-day average≤ 8.97 mkcal/dayMay–Aug001
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year001
Solids, suspended percent removalmonthly average minimum≥ 65 %all year001
Chlorine usagemonthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDall year003

New limits from Feb 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], daily maximum20 mg/L (May–Nov)new10.2 mg/L (5 values)0.51×
Nitrogen, ammonia total [as N], monthly average10 mg/L (May–Nov)new7.8 mg/L (5 values)0.78×

How strict are these limits?

Cited limits by parameter: Oregon's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0022560 · MCP: https://passage-data.com/mcp