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Crushed And Broken Limestone, Rockwood, Illinois. NPDES permit IL0060674, in force until Jan 31, 2031. Last 12 months: no values over a limit, 4 of 42 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | minimum | ≥ 6.5 SU | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | quarterly minimum | ≥ 6 SU | all year |
| pH | quarterly minimum | ≥ 6 SU | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | quarterly minimum | ≥ 6 SU | all year |
| pH | quarterly minimum | ≥ 6 SU | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | minimum | ≥ 6.5 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | quarterly maximum | ≤ 9 SU | all year |
| pH | quarterly maximum | ≤ 9 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | quarterly maximum | ≤ 9 SU | all year |
| pH | quarterly maximum | ≤ 9 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| pH | maximum | ≤ 9 SU | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Acidity, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year |
| Solids, settleable | quarterly maximum | ≤ .5 mL/L | all year |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year |
| Solids, settleable | daily maximum | ≤ .5 mL/L | all year |
| Oil & Grease | daily maximum | report only (mg/L) | all year |
| Oil & Grease | daily maximum | report only (mg/L) | all year |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 30 mg/L | all year |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | quarterly maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | quarterly maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | quarterly maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1477 mg/L | all year |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year |
| Iron, total [as Fe] | 30-day average | ≤ 3 mg/L | all year |
| Iron, total [as Fe] | 30-day average | ≤ 2 mg/L | all year |
| Iron, total [as Fe] | 30-day average | ≤ 2 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 6 mg/L | all year |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year |
| Iron, total [as Fe] | daily maximum | ≤ 4 mg/L | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 1 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 24 Mining and Quarrying of Nonmetallic Minerals permits in Illinois.
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