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Kla-tencor Corporation

1 Portola Avenue, Livermore, CA 94550

UNVERIFIEDLAST SEEN IN FEDERAL DATA — · 1 SOURCE

Present in a source dataset, with no recent operating signal.

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What they make

Semiconductor and Related Device Manufacturing334413

Where it is

37.70582, -121.80499 · CENSUS TIGER
COUNTY
METRO AREA
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Other plants nearby

FacilityCityIndustryStatusDistance
Toshiba America Electronic Components INCLivermoreSemiconductor and Related Device Manufacturing
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REPORTED CLOSED0.2 KM
Myheatsinks, INC.LivermoreSemiconductor and Related Device Manufacturing
334413
ACTIVE0.8 KM
Altamont Manufacturing, INC.LivermoreFabricated Structural Metal Manufacturing
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Bolb INCLivermoreSemiconductor and Related Device Manufacturing
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LIKELY ACTIVE1.7 KM
Cable Wholesale.com, INCLivermoreOther Electronic Component Manufacturing
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Every listed plant in Alameda 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.

Lam Research Corporation
Livermore, CA
UNVERIFIED333242

Where this record comes from

1 source holds this plant, and 6 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 EIS · EPA site type STATIONARY.

IN ALAMEDA COUNTY228 other plants share this one’s industry (Semiconductor and Other Electronic Component Manufacturing, NAICS 3344); 44 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: KLA-TENCOR CORPORATION · OCT 2026
Street address
EPA: 1 PORTOLA AVENUE · OCT 2026
City
EPA: LIVERMORE · OCT 2026
State
EPA: CA · OCT 2026
County (FIPS code)
EPA: 06001 · OCT 2026
Coordinates
EPA: 37.70582,-121.80499 · JUL 2026

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