St. Louis Airport Authority

NPDES permit MO0111210 · Minor NON-POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-03-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MO permits in EPA's filings — check your permit).

Limits in force (19)

OutfallParameterStatisticLimitMonths
006Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
006Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
006pHMINIMUM >= 6.5 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
006ChlorideDAILY MX report only all year
006ChlorideDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
006RainfallDAILY MX report only all year
006Storm water flowDAILY MX report only all year
007Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
007pHMINIMUM >= 6.5 SU all year
007pHMAXIMUM <= 9 SU all year
007Solids, total suspendedDAILY MX report only all year
007Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
007ChlorideDAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
007RainfallDAILY MX report only all year
007Storm water flowDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states