Clean Air Act Clean Water Act RCRA

US SILICA CO

Quick Summary

•Assessed $0 in total penalties since records began.

Address: 701 BOYCE MEMORIAL DR
OTTAWA, IL 61350
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County: LA SALLE County
Industry: Mining, Quarrying, and Oil and Gas Extraction
NAICS (North American Industry Classification): 212322
Inspections: 2 · last Jul 30, 2025
Total Penalties: $0
Registry ID: 110000845925

Compliance Violations

Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.

Program	Type	Violation Date	Return to Compliance	Status
caa	HPV	Jun 6, 2018	Nov 28, 2018	Resolved

Discharge Limit Exceedances

Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.

Pollutant	Violation	Reported	Limit	Exceedance	Period	Status
Solids, total suspended	DMR, Limited - Numeric Violation	29.00 mg/L	25.00	+16%	Jul 2019	Open
Solids, total suspended	DMR, Limited - Numeric Violation	51.00 mg/L	45.00	+13%	Mar 2015	Open

Enforcement Actions

Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.

Administrative - Formal

Clean Air Act · Case 3601682054 · Nov 26, 2018

Notice of Violation

Clean Air Act · Case 3601478437 · Jun 28, 2018