Ardmore, City of (Ind Air Park) — NPDES permit OK0030422: limits, due date and EPA's record

NPDES permit OK0030422 · Minor POTW · effective, expires 2029-05-31 · EPA's file as of 2026-09-19

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (5), E. coli (3), Chlorine, total residual (2).

Reporting

Reports are due about 16 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (15)

Outfall	Parameter	Statistic	Limit	Months
002	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 50 lb/d	all year
002	pH	MINIMUM	>= 6.5 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
002	Solids, total suspended	MO AVG	<= 50 lb/d	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Chlorine, total residual	INST MAX	<= .099 mg/L	all year
002	E. coli	GEO MEAN	<= 126 MPN/100mL	May, Jun, Jul, Aug, Sep
002	E. coli	GEO MEAN	<= 630 MPN/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
002	E. coli	DAILY MX	<= 406 MPN/100mL	May, Jun, Jul, Aug, Sep
002	E. coli	DAILY MX	<= 2030 MPN/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec