Facility	City	Industry	Status	Distance
Westlake Royal Stone LLC - American Canyon, CA	American Canyon	Other Concrete Product Manufacturing 327390	LIKELY ACTIVE	5.7 KM
Boral Stone Products LLC	American Canyon	Pottery, Ceramics, and Plumbing Fixture Manufacturing 327110	UNVERIFIED	5.8 KM
Csr Hydro Conduit	Napa	Concrete Pipe Manufacturing 327332	UNVERIFIED	5.8 KM
Foley Products Company - Napa	American Canyon	Concrete Pipe Manufacturing 327332	LIKELY ACTIVE	5.9 KM
Napa Valley Cast Stone	American Canyon	Concrete Pipe Manufacturing 327332	UNVERIFIED	7.3 KM

Every listed plant in Napa County

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.

Syar Concrete LLC

Napa, CA

UNVERIFIED327320

WHERE THIS RECORD COMES FROM — 1 FEDERAL SOURCE, 5 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 EIS · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
EPA FRS	EXISTENCE	JUN 2017	AUG 2024

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
STATE	EPA FRS	JUL 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Report a correction · Request removal