Cargill Incorporated - Avery Island Mine — NPDES permit LA0000264: limits, due date and EPA's record

NPDES permit LA0000264 · Minor NON-POTW · effective, expires 2028-07-31 · 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 LA permits in EPA's filings — check your permit).

Limits in force (16)

Outfall	Parameter	Statistic	Limit	Months
002	pH	INST MIN	>= 6 SU	all year
002	pH	INST MAX	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 522.5 lb/d	all year
002	Solids, total suspended	DAILY MX	<= 1045 lb/d	all year
002	Oil & Grease	DAILY MX	<= 15 mg/L	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Carbon, tot organic [TOC]	DAILY MX	<= 50 mg/L	all year
002	Chloride [as Cl]	MO AVG	report only	all year
002	Chloride [as Cl]	DAILY MX	report only	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	Calcium sulfate	MO AVG	report only	all year
002	Calcium sulfate	DAILY MX	report only	all year