Calmat Company Dba Shamrock Materials-st Helena Plant
800 Crane Ave, Saint Helena, CA 94574
UNVERIFIEDLAST SEEN IN FEDERAL DATA — · 1 SOURCE
Present in a source dataset, with no recent operating signal.
What they make
Ready-Mix Concrete Manufacturing327320Where it is
38.49615, -122.46880 · CENSUS TIGER
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Harold Smith & Son, INC | Saint Helena | Ready-Mix Concrete Manufacturing 327320 | UNVERIFIED | 0.0 KM |
| Northgate Ready Mix | Santa Rosa | Ready-Mix Concrete Manufacturing 327320 | UNVERIFIED | 22.5 KM |
| Selvage Concrete Products, INC | Santa Rosa | Other Concrete Product Manufacturing 327390 | UNVERIFIED | 26.1 KM |
| Jensen Enterprises INC | Santa Rosa | Other Concrete Product Manufacturing 327390 | UNVERIFIED | 26.2 KM |
| Calmat CO Dba Shamrock Materials | Napa | Ready-Mix Concrete Manufacturing 327320 | UNVERIFIED | 30.8 KM |
Also at this address
1 other record shares this street address. Separate filings can describe distinct businesses on one site, or the same plant recorded by different agencies, so every record is kept rather than merged away.
WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 6 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| EPA FRS | EXISTENCE | APR 2022 | APR 2022 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| RCRA GENERATOR STATUS | EPA ECHO | SEP 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.