DDP SPECIALTY ELECTRONIC MATERIALS US LLC — NPDES permit IL0037851: limits, due date and EPA's record

NPDES permit IL0037851 · Minor NON-POTW · effective, expires 2031-02-28 · 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 (1).

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 (21)

Outfall	Parameter	Statistic	Limit	Months
004	pH	MINIMUM	>= 6 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	Solids, total suspended	SEMI AVG	<= 15 mg/L	Jan, Jul
004	Solids, total suspended	SX	<= 30 mg/L	Jan, Jul
004	Chloride [as Cl]	SEMI AVG	report only	Jan, Jul
004	Chloride [as Cl]	SX	report only	Jan, Jul
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
A04	BOD, 5-day, 20 deg. C	30DA AVG	<= 30 mg/L	all year
A04	BOD, 5-day, 20 deg. C	DAILY MX	<= 60 mg/L	all year
A04	BOD, 5-day, 20 deg. C	30DA AVG	<= 2.1 lb/d	all year
A04	BOD, 5-day, 20 deg. C	DAILY MX	<= 4.1 lb/d	all year
A04	Solids, total suspended	30DA AVG	<= 30 mg/L	all year
A04	Solids, total suspended	DAILY MX	<= 60 mg/L	all year
A04	Solids, total suspended	30DA AVG	<= 2.1 lb/d	all year
A04	Solids, total suspended	DAILY MX	<= 4.1 lb/d	all year
A04	Oil & Grease	SEMI AVG	<= 15 mg/L	Jan, Jul
A04	Oil & Grease	SX	<= 30 mg/L	Jan, Jul
A04	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
A04	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
A04	Coliform, fecal general	DAILY MX	<= 400 #/100mL	all year