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Port of Portland & Co-Applicants

Airports, Flying Fields, & Services, Portland, Oregon. NPDES permit OR0040291 expired Nov 30, 2023; 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: form CR monthly (1 value), form CS monthly (1 value)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (22)

ParameterStatisticLimitMonths
Flow ratedaily maximumreport only (cfs)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)Apr, May, Nov
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)Jan, Feb, Mar, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 22500 lb/dApr, May, Nov
BOD, 5-day, 20 deg. Cdaily maximum≤ 41800 lb/dJan, Feb, Mar, Dec
pHdaily minimum≥ 6 SUJan, Feb, Mar, Apr, May, Nov, Dec
pHdaily maximum≤ 8.5 SUJan, Feb, Mar, Apr, May, Nov, Dec
Carbon, tot organic [TOC]daily maximumreport only (mg/L)Jan, Feb, Mar, Dec
Carbon, tot organic [TOC]daily maximumreport only (mg/L)Apr, May, Nov
Carbon, tot organic [TOC]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]daily maximum≤ 19900 lb/dJan, Feb, Mar, Dec
Carbon, tot organic [TOC]daily maximum≤ 10700 lb/dApr, May, Nov
Carbon, tot organic [TOC]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]daily maximumreport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]weekly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Carbon, tot organic [TOC]weekly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, May, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDJun–Oct
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
Flow, in conduit or thru treatment plantdaily maximum≤ 0 MGDJun–Sep

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OR0040291 · MCP: https://passage-data.com/mcp