Facility	City	Industry	Status	Distance
Norcal Materials LLC Dba Harbor Ready Mix	San Carlos	Ready-Mix Concrete Manufacturing 327320	UNVERIFIED	1.1 KM
South Bay Marble INC	San Carlos	All Other Plastics Product Manufacturing 326199	UNVERIFIED	1.2 KM
Diamond Foundry INC	San Carlos	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing 327999	UNVERIFIED	1.2 KM
Marble City Company	san Carlos, CA	Cut Stone and Stone Product Manufacturing 327991	LIKELY ACTIVE	2.3 KM
E R Porter Marble Products CO	San Mateo	Cut Stone and Stone Product Manufacturing 327991	UNVERIFIED	8.8 KM

Every listed plant in San Mateo County

Also at this address

No other federal record shares this street address.

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	FEB 2021	FEB 2021

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.

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