# HEMLOCK SEMICONDUCTOR OPERATIONS LLC, HEMLOCK MI: EPA ECHO compliance status: Violation Identified

**Remediation Urgency Score:** 48/100

| Field | Value |
|---|---|
| Facility | HEMLOCK SEMICONDUCTOR OPERATIONS LLC |
| EPA Registry ID | 110000407783 |
| Address | 12334 GEDDES RD., P.O. BOX 80, HEMLOCK, MI, 48626 |
| County | SAGINAW |
| Industry (NAICS) | 327992: Ground or Treated Mineral and Earth Manufacturing |
| SIC | 2819: Industrial Inorganic Chemicals, 3295: Minerals, Ground Or Treated, 3339: Primary Nonferrous Metals |
| Overall compliance status | Violation Identified |
| Significant noncomplier | No |
| Quarters in noncompliance (last 12) | 7 |
| Clean Water Act | Violation Identified |
| Clean Air Act | Violation w/in 1 Year |
| RCRA | No Violation Identified |
| Formal enforcement actions (5 years) | 0 |
| Total penalties | $0 |
| Last penalty | 10/16/2000 |
| Inspections (5 years) | 10 |
| Last inspection | 2026-06-18 |
| Watershed | Shiawassee |

## Why this score
- 7 of the last 12 quarters in noncompliance.
- Violations under 2 statutes (CWA, CAA): a multi-media problem.
- Inspected within the last year (2026-06-18).

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000407783). Last refreshed: 2026-11-04T18:09:33.420Z.
Compliance data comes from EPA ECHO and may lag state records; a violation flag is not a finding of wrongdoing. Informational only; not legal or engineering advice.