UTICA SILICA LLC

NPDES permit IL0080047 · Minor NON-POTW · effective, expires 2027-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit

0required values missing, on 0 form(s)

0of 12 forms filed late

Last period with anything received: 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).

Outfall 001, form 0 (PROCESS WW, MINE DEWATERING, AND SW): every 1 month(s), 8 values

Limits in force (8)

Outfall	Parameter	Statistic	Limit	Months
001	pH	MO MIN	>= 6.5 SU	all year
001	pH	MO MAX	<= 9 SU	all year
001	Solids, total suspended	30DA AVG	<= 25 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
001	Nickel, total [as Ni]	30DA AVG	<= .0108 mg/L	all year
001	Nickel, total [as Ni]	DAILY MX	<= .0216 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Offensive Conditions	VALUE	report only	all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states