KOPPERS CO., INC. (OROVILLE PLANT)

MARYSVILLE-BAGGET ROAD, OROVILLE, CA, 95965

No open violations Compliance record — not a listed vendor

Facility identity · canonical

EPA Registry ID: 110041969313
RCRA Handler ID(s): CAD009112087
Generator status: Large Quantity Generator (LQG)
County: BUTTE
EPA Region: 09
Active: Yes
NAICS: 321114
Coordinates: 39.471677, -121.564779

Compliance summary · canonical · as of Aug 11, 2026

3-year compliance history Not in the compliance universe for any of the last 12 quarters

Not in universe In violation Significant non-compliance

Significant non-complier: No
Last inspection: Jan 12, 2000
Inspections (5 yr): —
Informal actions (5 yr): —
Formal actions (5 yr): —
Total penalties: —

Permits & authorizations · canonical

Program	Type	Status	Effective
RCRA	LQG	Not reported	Not reported

Type is EPA's RCRA handler classification. Permit status and effective date are not published in the RCRAInfo handler dataset.

Violations · canonical · 17 total, 0 open

6 distinct violation categories on record:

Count	Code	Category	EPA description
7	264.A	TSDF standards (permitted)	Standards for Owners and Operators of HW TSDs: General
4	264.H	TSDF standards (permitted)	Standards for Owners and Operators of HW TSDs: Financial Requirements
3	262.A	Generator standards	Standards Applicable to Generators of HW: General
1	264.G	TSDF standards (permitted)	Standards for Owners and Operators of HW TSDs: Closure and Post-Closure
1	265.F	TSDF standards (interim status)	Interim Status Standards for Owners and Operators of HW TSDs: Ground-Water Monitoring
1	279.C	Used oil management	Standards for Used Oil: Generators

Most recent 8 of 17:

Determined	Category	Status	Agency
Jan 12, 2000	Generator standards 262.A · Standards Applicable to Generators of HW: General	Resolved Jan 24, 2000	S
Nov 16, 1998	Generator standards 262.A · Standards Applicable to Generators of HW: General	Resolved Apr 21, 1999	E
Nov 16, 1998	TSDF standards (permitted) 264.A · Standards for Owners and Operators of HW TSDs: General	Resolved Apr 21, 1999	E
Nov 16, 1998	Used oil management 279.C · Standards for Used Oil: Generators	Resolved Apr 21, 1999	E
Apr 19, 1995	Generator standards 262.A · Standards Applicable to Generators of HW: General	Resolved Jan 12, 2000	S
Apr 19, 1995	TSDF standards (permitted) 264.A · Standards for Owners and Operators of HW TSDs: General	Resolved Jan 12, 2000	S
Feb 11, 1993	TSDF standards (permitted) 264.A · Standards for Owners and Operators of HW TSDs: General	Resolved Mar 23, 1993	S
Jun 26, 1992	TSDF standards (permitted) 264.A · Standards for Owners and Operators of HW TSDs: General	Resolved Mar 5, 1993	S

Inspection history · canonical · 18 total

Date	Type	Agency	Outcome
Jan 12, 2000	COMPLIANCE EVALUATION INSPECTION (CEI)	S	Violation found
Nov 16, 1998	COMPLIANCE EVALUATION INSPECTION (CEI)	E	Violation found
Apr 18, 1995	COMPLIANCE EVALUATION INSPECTION (CEI)	S	Violation found
Jan 19, 1993	FINANCIAL RECORD REVIEW (FRR)	S	In compliance
Jan 6, 1993	COMPLIANCE EVALUATION INSPECTION (CEI)	S	Violation found
May 29, 1992	FINANCIAL RECORD REVIEW (FRR)	S	In compliance
May 13, 1992	COMPLIANCE EVALUATION INSPECTION (CEI)	S	Violation found
Nov 22, 1991	FINANCIAL RECORD REVIEW (FRR)	C	Violation found

Showing 8 most recent of 18.

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Data sources

EPA ECHO — this facility's detailed report — facility, compliance summary, permits, evaluations & violations

RCRAInfo evaluation and violation records for this facility are integrated into the ECHO report linked above — RCRAInfo's own public search doesn't offer a stable per-facility link. General source: EPA ECHO, EPA RCRAInfo.

Compliance, permit, and location data come straight from EPA and can't be edited. Contact info and description come from the business's claimed listing, if any. This profile is not an official regulatory determination.