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Portland General Electric Company

Electric Services, Clatskanie, Oregon. NPDES permit OR0027430 expired Nov 30, 2012; its limits still apply. Last 12 months: over a limit 3 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (11 values), outfall 101 form A monthly (4 values), outfall 301 form A monthly (4 values), outfall 401 form A monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 2 required values missing, 6 of 48 reports late

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

Period endingParameterReportedLimitOver by
July 2026Oil & Grease, daily maximum19.1 mg/L≤ 15 mg/L27%
August 2026Oil & Grease, daily maximum29.7 mg/L≤ 15 mg/L98%
August 2026Oil & Grease, monthly average< 11.2 mg/L≤ 10 mg/L12%

Limits in force (23)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspendeddaily maximum≤ 30 mg/Lall year001
Oil & Greasemonthly average≤ 10 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 1.44 MGDall year001
Excess thermal loadmonthly average≤ 1.6 MWall year001
Excess thermal loaddaily maximum≤ 3.95 MWall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
Chlorine, free availablemonthly average≤ .2 mg/Lall year101
Chlorine, free availabledaily maximum≤ .5 mg/Lall year101
Solids, total suspendedmonthly average≤ 30 mg/Lall year301
Solids, total suspendeddaily maximum≤ 100 mg/Lall year301
Oil & Greasemonthly average≤ 15 mg/Lall year301
Oil & Greasedaily maximum≤ 20 mg/Lall year301
Solids, total suspendedmonthly average≤ 30 mg/Lall year401
Solids, total suspendeddaily maximum≤ 100 mg/Lall year401
Oil & Greasemonthly average≤ 15 mg/Lall year401
Oil & Greasedaily maximum≤ 20 mg/Lall year401

How strict are these limits?

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

Same industry: the 8 Electric Services permits in Oregon.

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0027430 · MCP: https://passage-data.com/mcp