Wynnewood Refining Co. -PLF Remediation Site — NPDES permit OK0100544: limits, due date and EPA's record

NPDES permit OK0100544 · Minor NON-POTW · effective, expires 2027-08-31 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among OK permits in EPA's filings — check your permit).

Limits in force (17)

Outfall	Parameter	Statistic	Limit	Months
004	pH	MINIMUM	>= 6.5 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
004	Carbon, tot organic [TOC]	MO AVG	<= 75 mg/L	all year
004	Carbon, tot organic [TOC]	DAILY MX	<= 95 mg/L	all year
004	Methyl tert-butyl ether [MTBE]	MO AVG	<= 70 ug/L	all year
004	Methyl tert-butyl ether [MTBE]	DAILY MX	<= 70 ug/L	all year
004	Polynuclear Aromatic Hydrocarbons [PAHs]	MO AVG	<= 10 ug/L	all year
004	Polynuclear Aromatic Hydrocarbons [PAHs]	DAILY MX	<= 10 ug/L	all year
004	Benzene, ethylbenzene, toluene, xylene combination	MO AVG	<= 100 ug/L	all year
004	Benzene, ethylbenzene, toluene, xylene combination	DAILY MX	<= 100 ug/L	all year
004	Benzene	MO AVG	<= 5 ug/L	all year
004	Benzene	DAILY MX	<= 5 ug/L	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	<= .144 MGD	all year
004	Total Petroleum Hydrocarbons - Diesel	DAILY MX	<= 1000 ug/L	all year
004	Total Petroleum Hydrocarbons - Gasoline	DAILY MX	<= 1000 ug/L	all year