HILLSBORO ENERGY LLC — NPDES permit IL0078727: limits, due date and EPA's record

NPDES permit IL0078727 · Minor NON-POTW · administratively continued, expires 2019-11-30 · EPA's file as of 2026-09-19

This permit expired on 2019-11-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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 (307)

Outfall	Parameter	Statistic	Limit	Months
001	pH	QC	>= 6 SU	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	QC	>= 6 SU	all year
001	pH	QB	<= 9 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	pH	QB	<= 9 SU	all year
001	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
001	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
001	Acidity, total [as CaCO3]	DAILY MX	report only	all year
001	Acidity, total [as CaCO3]	DAILY MX	report only	all year
001	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
001	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
001	Solids, settleable	QB	<= .5 mL/L	all year
001	Hardness, total [as CaCO3]	QB	report only	all year
001	Hardness, total [as CaCO3]	DAILY MX	report only	all year
001	Hardness, total [as CaCO3]	DAILY MX	report only	all year
001	Hardness, total [as CaCO3]	QB	report only	all year
001	Chloride [as Cl]	QB	<= 500 mg/L	all year
001	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
001	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
001	Chloride [as Cl]	QB	<= 500 mg/L	all year
001	Sulfate, total [as SO4]	QB	<= 771 mg/L	all year
001	Sulfate, total [as SO4]	DAILY MX	<= 771 mg/L	all year
001	Sulfate, total [as SO4]	DAILY MX	<= 771 mg/L	all year
001	Sulfate, total [as SO4]	QB	<= 771 mg/L	all year
001	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
001	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
001	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
001	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
001	Mercury, total [as Hg]	DAILY MX	report only	all year
002	pH	MINIMUM	>= 6 SU	all year
002	pH	QC	>= 6 SU	all year
002	pH	QC	>= 6 SU	all year
002	pH	MINIMUM	>= 6.5 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	pH	QB	<= 9 SU	all year
002	pH	QB	<= 9 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
002	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
002	Acidity, total [as CaCO3]	DAILY MX	report only	all year
002	Acidity, total [as CaCO3]	DAILY MX	report only	all year
002	Solids, total suspended	30DA AVG	<= 35 mg/L	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	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
002	Solids, settleable	QB	<= .5 mL/L	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Hardness, total [as CaCO3]	QB	report only	all year
002	Hardness, total [as CaCO3]	QB	report only	all year
002	Hardness, total [as CaCO3]	DAILY MX	report only	all year
002	Chloride [as Cl]	DAILY MX	<= 1000 mg/L	all year
002	Chloride [as Cl]	QB	<= 1000 mg/L	all year
002	Chloride [as Cl]	QB	<= 1000 mg/L	all year
002	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
002	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
002	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
002	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
002	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
002	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
002	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
002	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
002	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
002	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
002	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
002	Flow, in conduit or thru treatment plant	MO AVG	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	MO AVG	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	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
002	Mercury, total [as Hg]	DAILY MX	report only	all year
003	pH	MINIMUM	>= 6.5 SU	all year
003	pH	MINIMUM	>= 6.5 SU	all year
003	pH	QC	>= 6 SU	all year
003	pH	QC	>= 6 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	pH	QB	<= 9 SU	all year
003	pH	QB	<= 9 SU	all year
003	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
003	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
003	Acidity, total [as CaCO3]	DAILY MX	report only	all year
003	Acidity, total [as CaCO3]	DAILY MX	report only	all year
003	Solids, total suspended	30DA AVG	<= 35 mg/L	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	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
003	Solids, settleable	QB	<= .5 mL/L	all year
003	Hardness, total [as CaCO3]	DAILY MX	report only	all year
003	Hardness, total [as CaCO3]	DAILY MX	report only	all year
003	Hardness, total [as CaCO3]	QB	report only	all year
003	Hardness, total [as CaCO3]	QB	report only	all year
003	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
003	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
003	Chloride [as Cl]	QB	<= 500 mg/L	all year
003	Chloride [as Cl]	QB	<= 500 mg/L	all year
003	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
003	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
003	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
003	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
003	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
003	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
003	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
003	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
003	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
003	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Mercury, total [as Hg]	DAILY MX	report only	all year
003	Mercury, total [as Hg]	DAILY MX	report only	all year
004	pH	MINIMUM	>= 6.5 SU	all year
004	pH	QC	>= 6 SU	all year
004	pH	QC	>= 6 SU	all year
004	pH	MINIMUM	>= 6.5 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	pH	QB	<= 9 SU	all year
004	pH	QB	<= 9 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
004	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
004	Acidity, total [as CaCO3]	DAILY MX	report only	all year
004	Acidity, total [as CaCO3]	DAILY MX	report only	all year
004	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
004	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
004	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
004	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
004	Solids, settleable	QB	<= .5 mL/L	all year
004	Hardness, total [as CaCO3]	DAILY MX	report only	all year
004	Hardness, total [as CaCO3]	QB	report only	all year
004	Hardness, total [as CaCO3]	QB	report only	all year
004	Hardness, total [as CaCO3]	DAILY MX	report only	all year
004	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
004	Chloride [as Cl]	QB	<= 500 mg/L	all year
004	Chloride [as Cl]	QB	<= 500 mg/L	all year
004	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
004	Sulfate, total [as SO4]	DAILY MX	<= 837 mg/L	all year
004	Sulfate, total [as SO4]	QB	<= 837 mg/L	all year
004	Sulfate, total [as SO4]	QB	<= 837 mg/L	all year
004	Sulfate, total [as SO4]	DAILY MX	<= 837 mg/L	all year
004	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
004	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
004	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
004	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
004	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
004	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
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
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
004	Mercury, total [as Hg]	DAILY MX	report only	all year
005	pH	MINIMUM	>= 6.5 SU	all year
005	pH	QC	>= 6 SU	all year
005	pH	QC	>= 6 SU	all year
005	pH	MINIMUM	>= 6 SU	all year
005	pH	MAXIMUM	<= 9 SU	all year
005	pH	QB	<= 9 SU	all year
005	pH	QB	<= 9 SU	all year
005	pH	MAXIMUM	<= 9 SU	all year
005	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
005	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
005	Acidity, total [as CaCO3]	DAILY MX	report only	all year
005	Acidity, total [as CaCO3]	DAILY MX	report only	all year
005	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
005	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
005	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
005	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
005	Solids, settleable	QB	<= .5 mL/L	all year
005	Hardness, total [as CaCO3]	DAILY MX	report only	all year
005	Hardness, total [as CaCO3]	QB	report only	all year
005	Hardness, total [as CaCO3]	QB	report only	all year
005	Hardness, total [as CaCO3]	DAILY MX	report only	all year
005	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
005	Chloride [as Cl]	QB	<= 638 mg/L	all year
005	Chloride [as Cl]	QB	<= 638 mg/L	all year
005	Chloride [as Cl]	DAILY MX	<= 638 mg/L	all year
005	Sulfate, total [as SO4]	DAILY MX	<= 837 mg/L	all year
005	Sulfate, total [as SO4]	QB	<= 837 mg/L	all year
005	Sulfate, total [as SO4]	QB	<= 837 mg/L	all year
005	Sulfate, total [as SO4]	DAILY MX	<= 837 mg/L	all year
005	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
005	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
005	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
005	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
005	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
005	Manganese, total [as Mn]	DAILY MX	<= 1 mg/L	all year
005	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
005	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
005	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
005	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
005	Mercury, total [as Hg]	DAILY MX	report only	all year
005	Mercury, total [as Hg]	DAILY MX	report only	all year
006	pH	QC	>= 6 SU	all year
006	pH	MINIMUM	>= 6.5 SU	all year
006	pH	MINIMUM	>= 6.5 SU	all year
006	pH	QC	>= 6 SU	all year
006	pH	QB	<= 9 SU	all year
006	pH	MAXIMUM	<= 9 SU	all year
006	pH	MAXIMUM	<= 9 SU	all year
006	pH	QB	<= 9 SU	all year
006	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
006	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
006	Acidity, total [as CaCO3]	DAILY MX	report only	all year
006	Acidity, total [as CaCO3]	DAILY MX	report only	all year
006	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
006	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
006	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
006	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
006	Solids, settleable	QB	<= .5 mL/L	all year
006	Hardness, total [as CaCO3]	QB	report only	all year
006	Hardness, total [as CaCO3]	DAILY MX	report only	all year
006	Hardness, total [as CaCO3]	DAILY MX	report only	all year
006	Hardness, total [as CaCO3]	QB	report only	all year
006	Chloride [as Cl]	QB	<= 500 mg/L	all year
006	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
006	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
006	Chloride [as Cl]	QB	<= 500 mg/L	all year
006	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
006	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
006	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
006	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
006	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
006	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
006	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
006	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
006	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	pH	QC	>= 6 SU	all year
007	pH	QC	>= 6 SU	all year
007	pH	MINIMUM	>= 6.5 SU	all year
007	pH	MINIMUM	>= 6.5 SU	all year
007	pH	QB	<= 9 SU	all year
007	pH	QB	<= 9 SU	all year
007	pH	MAXIMUM	<= 9 SU	all year
007	pH	MAXIMUM	<= 9 SU	all year
007	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
007	Alkalinity, total [as CaCO3]	DAILY MX	report only	all year
007	Acidity, total [as CaCO3]	DAILY MX	report only	all year
007	Acidity, total [as CaCO3]	DAILY MX	report only	all year
007	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
007	Solids, total suspended	30DA AVG	<= 35 mg/L	all year
007	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
007	Solids, total suspended	DAILY MX	<= 70 mg/L	all year
007	Solids, settleable	QB	<= .5 mL/L	all year
007	Hardness, total [as CaCO3]	QB	report only	all year
007	Hardness, total [as CaCO3]	QB	report only	all year
007	Hardness, total [as CaCO3]	DAILY MX	report only	all year
007	Hardness, total [as CaCO3]	DAILY MX	report only	all year
007	Chloride [as Cl]	QB	<= 500 mg/L	all year
007	Chloride [as Cl]	QB	<= 500 mg/L	all year
007	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
007	Chloride [as Cl]	DAILY MX	<= 500 mg/L	all year
007	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
007	Sulfate, total [as SO4]	QB	<= 1435 mg/L	all year
007	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
007	Sulfate, total [as SO4]	DAILY MX	<= 1435 mg/L	all year
007	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
007	Iron, total [as Fe]	30DA AVG	<= 3 mg/L	all year
007	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
007	Iron, total [as Fe]	DAILY MX	<= 6 mg/L	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
007	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year