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Port of ST. Helens

Electric Services, major discharger, Clatskanie, Oregon. NPDES permit OR0034231 expired Dec 31, 2007; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (9 values), outfall 101 form A monthly (4 values), outfall 102 form A monthly (6 values), outfall 103 form A monthly (4 values), outfall 104 form A monthly (6 values), outfall 1BI form A monthly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 6 of 72 reports late

Limits in force (32)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrade2-hour peak≤ 32 deg CJun–Oct001
Temperature, water deg. centigrademaximum 7-day average≤ 27 deg CJun–Oct001
Temperature, water deg. centigrademaximum 30-day average≤ 26 deg CJun–Oct001
Flow ratemonthly averagereport only (gal/min)all year001
Chlorine, total residualmonthly averagereport only (mg/L)all year001
Excess thermal loaddaily maximumreport only (MW)Jun–Oct001
Excess thermal loadmaximum 7-day average≤ 4.46 MWJun–Oct001
Excess thermal loadmaximum 30-day average≤ 3.58 MWJun–Oct001
pH, maximumdaily maximum≤ 8.5 SUall year001
pH, minimumdaily minimum≥ 6.5 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year101
Solids, total suspendeddaily maximum≤ 100 mg/Lall year101
Oil & Greasemonthly average≤ 15 mg/Lall year101
Oil & Greasedaily maximum≤ 20 mg/Lall year101
Chromium, total [as Cr]monthly averagereport only (mg/L)all year102
Chromium, total [as Cr]daily maximumreport only (mg/L)all year102
Zinc, total [as Zn]monthly averagereport only (mg/L)all year102
Zinc, total [as Zn]daily maximumreport only (mg/L)all year102
Chlorine, free availablemonthly average≤ .15 mg/Lall year102
Chlorine, free availabledaily maximum≤ .38 mg/Lall year102
Solids, total suspendedmonthly average≤ 30 mg/Lall year103
Solids, total suspendeddaily maximum≤ 100 mg/Lall year103
Oil & Greasemonthly average≤ 15 mg/Lall year103
Oil & Greasedaily maximum≤ 20 mg/Lall year103
Chromium, total [as Cr]monthly averagereport only (mg/L)all year104
Chromium, total [as Cr]daily maximumreport only (mg/L)all year104
Zinc, total [as Zn]monthly averagereport only (ug/L)all year104
Zinc, total [as Zn]daily maximumreport only (ug/L)all year104
Chlorine, free availablemonthly average≤ .15 mg/Lall year104
Chlorine, free availabledaily maximum≤ .38 mg/Lall year104
Chlorine, total residualmonthly average≤ .15 mg/Lall year1BI
Chlorine, total residualdaily maximum≤ .38 mg/Lall year1BI

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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0034231 · MCP: https://passage-data.com/mcp