# J.R. SIMPLOT COMPANY, LATHROP CA: EPA ECHO compliance status: Significant Violation

**Remediation Urgency Score:** 98/100

| Field | Value |
|---|---|
| Facility | J.R. SIMPLOT COMPANY |
| EPA Registry ID | 110000485109 |
| Address | 16777 HOWLAND RD, LATHROP, CA, 95330 |
| County | SAN JOAQUIN |
| Industry (NAICS) | 325320: Pesticide and Other Agricultural Chemical Manufacturing |
| SIC | 2873: Nitrogenous Fertilizers, 2874: Phosphatic Fertilizers, 2879: Agricultural Chemicals |
| Overall compliance status | Significant Violation |
| Significant noncomplier | Yes |
| Quarters in noncompliance (last 12) | 12 |
| Clean Water Act | Not Applicable |
| Clean Air Act | Violation Unaddressed; Local Has Lead Enforcement |
| RCRA | Violation |
| Formal enforcement actions (5 years) | 13 |
| Total penalties | $454,200 |
| Last penalty | 12/20/2023 |
| Inspections (5 years) | 5 |
| Last inspection | 2024-12-09 |
| Watershed | San Joaquin Delta |

## Why this score
- Flagged as a significant noncomplier, the highest EPA priority tier.
- 12 of the last 12 quarters in noncompliance.
- Violations under 3 statutes (CWA, CAA, RCRA): a multi-media problem.
- 13 formal enforcement action(s) in 5 years.
- $454,200 in penalties: remediation has a clear cost of inaction.

Source: U.S. EPA ECHO (Enforcement and Compliance History Online) (https://echo.epa.gov/detailed-facility-report?fid=110000485109). Last refreshed: 2026-11-03T18:05:36.266Z.
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.