AMRIZE MID-AMERICA INC-JOLIET QUARRY — NPDES permit IL0061115: limits, due date and EPA's record

NPDES permit IL0061115 · Minor NON-POTW · effective, expires 2030-11-30 · 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

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (18)

Outfall	Parameter	Statistic	Limit	Months
002	pH	MO MIN	>= 6.5 SU	all year
002	pH	MO MAX	<= 9 SU	all year
002	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
002	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
002	Sulfate, total [as SO4]	DAILY MX	<= 1699 mg/L	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Offensive Conditions	VALUE	report only	all year
003	pH	MO MIN	>= 6.5 SU	all year
003	pH	MO MAX	<= 9 SU	all year
003	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
003	Hardness, total [as CaCO3]	DAILY MX	report only	all year
003	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
003	Sulfate, total [as SO4]	DAILY MX	<= 1699 mg/L	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Offensive Conditions	VALUE	report only	all year