Mobile County Commission — NPDES permit AL0062791: limits, due date and EPA's record

NPDES permit AL0062791 · Minor NON-POTW · effective, expires 2027-06-30 · EPA's file as of 2026-09-19

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

Reporting

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

Limits in force (27)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	>= 6 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
001	BOD, 5-day, 20 deg. C	DAILY MX	<= 45 mg/L	all year
001	pH	DAILY MN	>= 6 SU	all year
001	pH	DAILY MX	<= 8.5 SU	all year
001	Solids, total suspended	MO AVG	<= 27 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 88 mg/L	all year
001	Oil & Grease	DAILY MX	<= 15 mg/L	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.2 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 3.3 mg/L	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Carbon, tot organic [TOC]	DAILY MX	report only	all year
001	Zinc, total [as Zn]	MO AVG	<= .11 mg/L	all year
001	Zinc, total [as Zn]	DAILY MX	<= .197 mg/L	all year
001	Phenol	MO AVG	<= .015 mg/L	all year
001	Phenol	DAILY MX	<= .026 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Toxicity [chronic], Ceriodaphnia dubia	DAILY MX	<= 0 pass=0;fail=1	all year
001	Toxicity [chronic], Pimephales promelas [Fathead Minnow]	DAILY MX	<= 0 pass=0;fail=1	all year
001	p-Cresol	MO AVG	<= .014 mg/L	all year
001	p-Cresol	DAILY MX	<= .025 mg/L	all year
001	Benzoic acids, total	MO AVG	<= .071 mg/L	all year
001	Benzoic acids, total	DAILY MX	<= .12 mg/L	all year
001	.alpha.-Terpineol	MO AVG	<= .016 mg/L	all year
001	.alpha.-Terpineol	DAILY MX	<= .033 mg/L	all year
001	Chemical Oxygen Demand [COD]	DAILY MX	report only	all year