Calstone Company

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
ASAPG - San Martin	San Martin	Concrete Block and Brick Manufacturing 327331	◐ LIKELY ACTIVE	0.0 KM
KLKijero, LLC	Morgan Hill	Other Electronic Component Manufacturing 334419	◐ LIKELY ACTIVE	5.0 KM
OOldcastle	Morgan Hill	Other Concrete Product Manufacturing 327390	◐ LIKELY ACTIVE	10.9 KM
CGCalstone Gilroy-oldcastle Apg	Gilroy	Concrete Block and Brick Manufacturing 327331	◐ LIKELY ACTIVE	12.9 KM
Willis Construction Company, INC.	San Juan Bautista	Other Concrete Product Manufacturing 327390	● ACTIVE	24.5 KM

Every listed plant in Santa Clara County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 7 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in CA-ENVIROVIEW, NPDES, RCRAINFO · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110013850387 · first seen JUN 2017 · last seen AUG 2024
• EPA ECHO compliance recordsOPERATING
  first seen JUN 2022 · last seen JUN 2022

IN SANTA CLARA COUNTY49 other plants share this one’s industry (Cement and Concrete Product Manufacturing, NAICS 3273); 5 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

EPA: CALSTONE COMPANY · OCT 2026

Street address

EPA: 13755 LLAGAS AVENUE · OCT 2026

City

EPA: SAN MARTIN · OCT 2026

State

EPA: CA · OCT 2026

County (FIPS code)

EPA: 06085 · OCT 2026

Coordinates

Census geocoder: 37.09170066382,-121.610158132544 · JUL 2026 · ON THIS PAGE

EPA: 37.09182,-121.61016 · OCT 2026 · ON THIS PAGE

Hazardous waste generator (RCRA)

EPA ECHO: none · OCT 2026