ASHLAND LLC — NPDES permit IL0064408: limits, due date and EPA's record

NPDES permit IL0064408 · Minor NON-POTW · effective, expires 2028-08-31 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (28)

Outfall	Parameter	Statistic	Limit	Months
002	pH	MO MIN	>= 6 SU	all year
002	pH	MO MAX	<= 9 SU	all year
002	Solids, total suspended	30DA AVG	<= 15 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 30 mg/L	all year
002	Lead, total [as Pb]	30DA AVG	<= .2 mg/L	all year
002	Lead, total [as Pb]	DAILY MX	<= .4 mg/L	all year
002	Zinc, total [as Zn]	30DA AVG	<= 1 mg/L	all year
002	Zinc, total [as Zn]	DAILY MX	<= 2 mg/L	all year
002	Toluene	SX	report only	all year
002	Toluene	SX	report only	all year
002	Benzene	SX	report only	all year
002	Benzene	SX	report only	all year
002	Chlorobenzene	SX	report only	all year
002	Chlorobenzene	SX	report only	all year
002	Ethylbenzene	SX	report only	all year
002	Ethylbenzene	SX	report only	all year
002	Tetrachloroethylene	SX	report only	all year
002	Tetrachloroethylene	SX	report only	all year
002	1,1-Dichloroethylene	SX	report only	all year
002	1,1-Dichloroethylene	SX	report only	all year
002	Vinyl chloride	SX	report only	all year
002	Vinyl chloride	SX	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	Bromodichloromethane	SX	report only	all year
002	Bromodichloromethane	SX	report only	all year
002	Xylene [mix of m+o+p]	SX	report only	all year
002	Xylene [mix of m+o+p]	SX	report only	all year