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US Silica Company

Industrial Sand, Ottawa, Illinois. NPDES permit IL0001325, in force until Sep 30, 2028. Last 12 months: no values over a limit, 1 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 002 form 0 monthly (7 values), outfall 004 form 0 monthly (7 values), outfall 002 form S twice a year, outfall 004 form S twice a year
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 28 reports late

Limits in force (94)

ParameterStatisticLimitMonthsOutfall
pHmonthly minimum≥ 6.5 SUall year002
pHmonthly maximum≤ 9 SUall year002
Solids, total suspended30-day average≤ 25 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Oil & Greasedaily maximumreport only (mg/L)all year002
Oil & Greasedaily maximumreport only (mg/L)all year002
Cyanide, weak acid, dissociabledaily maximumreport only (mg/L)all year002
Cyanide, weak acid, dissociabledaily maximumreport only (mg/L)all year002
Cyanide, total [as CN]daily maximumreport only (mg/L)all year002
Cyanide, total [as CN]daily maximumreport only (mg/L)all year002
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year002
Fluoride, total [as F]daily maximumreport only (mg/L)all year002
Fluoride, total [as F]daily maximumreport only (mg/L)all year002
Arsenic, total [as As]daily maximumreport only (mg/L)all year002
Arsenic, total [as As]daily maximumreport only (mg/L)all year002
Barium, total [as Ba]daily maximumreport only (mg/L)all year002
Barium, total [as Ba]daily maximumreport only (mg/L)all year002
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year002
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year002
Chromium, total [as Cr]daily maximumreport only (mg/L)all year002
Chromium, total [as Cr]daily maximumreport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Iron, total [as Fe]daily maximumreport only (mg/L)all year002
Iron, total [as Fe]daily maximumreport only (mg/L)all year002
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year002
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year002
Lead, total [as Pb]daily maximumreport only (mg/L)all year002
Lead, total [as Pb]daily maximumreport only (mg/L)all year002
Manganese, total [as Mn]daily maximumreport only (mg/L)all year002
Manganese, total [as Mn]daily maximumreport only (mg/L)all year002
Nickel, total [as Ni]daily maximumreport only (mg/L)all year002
Nickel, total [as Ni]daily maximumreport only (mg/L)all year002
Silver, total [as Ag]daily maximumreport only (mg/L)all year002
Silver, total [as Ag]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Selenium, total [as Se]daily maximumreport only (mg/L)all year002
Selenium, total [as Se]daily maximumreport only (mg/L)all year002
Phenolics, total recoverabledaily maximumreport only (mg/L)all year002
Phenolics, total recoverabledaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Offensive Conditionsmaximumreport only (N=0;Y=1)all year002
Mercury, total [as Hg]daily maximumreport only (ng/L)all year002
Mercury, total [as Hg]daily maximumreport only (ng/L)all year002
pHmonthly minimum≥ 6.5 SUall year004
pHmonthly maximum≤ 9 SUall year004
Solids, total suspended30-day average≤ 25 mg/Lall year004
Solids, total suspendeddaily maximum≤ 45 mg/Lall year004
Oil & Greasedaily maximumreport only (mg/L)all year004
Oil & Greasedaily maximumreport only (mg/L)all year004
Cyanide, weak acid, dissociabledaily maximumreport only (mg/L)all year004
Cyanide, weak acid, dissociabledaily maximumreport only (mg/L)all year004
Cyanide, total [as CN]daily maximumreport only (mg/L)all year004
Cyanide, total [as CN]daily maximumreport only (mg/L)all year004
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year004
Fluoride, total [as F]daily maximumreport only (mg/L)all year004
Fluoride, total [as F]daily maximumreport only (mg/L)all year004
Arsenic, total [as As]daily maximumreport only (mg/L)all year004
Arsenic, total [as As]daily maximumreport only (mg/L)all year004
Barium, total [as Ba]daily maximumreport only (mg/L)all year004
Barium, total [as Ba]daily maximumreport only (mg/L)all year004
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year004
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year004
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year004
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year004
Chromium, total [as Cr]daily maximumreport only (mg/L)all year004
Chromium, total [as Cr]daily maximumreport only (mg/L)all year004
Copper, total [as Cu]daily maximumreport only (mg/L)all year004
Copper, total [as Cu]daily maximumreport only (mg/L)all year004
Iron, total [as Fe]daily maximumreport only (mg/L)all year004
Iron, total [as Fe]daily maximumreport only (mg/L)all year004
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year004
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year004
Lead, total [as Pb]daily maximumreport only (mg/L)all year004
Lead, total [as Pb]daily maximumreport only (mg/L)all year004
Manganese, total [as Mn]daily maximumreport only (mg/L)all year004
Manganese, total [as Mn]daily maximumreport only (mg/L)all year004
Nickel, total [as Ni]daily maximumreport only (mg/L)all year004
Nickel, total [as Ni]daily maximumreport only (mg/L)all year004
Silver, total [as Ag]daily maximumreport only (mg/L)all year004
Silver, total [as Ag]daily maximumreport only (mg/L)all year004
Zinc, total [as Zn]daily maximumreport only (mg/L)all year004
Zinc, total [as Zn]daily maximumreport only (mg/L)all year004
Selenium, total [as Se]daily maximumreport only (mg/L)all year004
Selenium, total [as Se]daily maximumreport only (mg/L)all year004
Phenolics, total recoverabledaily maximumreport only (mg/L)all year004
Phenolics, total recoverabledaily maximumreport only (mg/L)all year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Offensive Conditionsmaximumreport only (N=0;Y=1)all year004
Mercury, total [as Hg]daily maximumreport only (ng/L)all year004
Mercury, total [as Hg]daily maximumreport only (ng/L)all year004

How strict are these limits?

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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0001325 · MCP: https://passage-data.com/mcp