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Harbor Ready-mix

123 Seaport Boulevard, Redwood City, CA 94063

UNVERIFIEDLAST SEEN IN FEDERAL DATA DEC 2022 · 2 SOURCES

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

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What they make

Ready-Mix Concrete Manufacturing327320

Where it is

37.49375, -122.21334 · CENSUS TIGER
COUNTY
METRO AREA
ON GOOGLE MAPS
STREET VIEW

Other plants nearby

FacilityCityIndustryStatusDistance
Granite Rock Company Redwood CityRedwood CityReady-Mix Concrete Manufacturing
327320
 LIKELY ACTIVE0.2 KM
Cemex San CarlosSan CarlosReady-Mix Concrete Manufacturing
327320
 UNVERIFIED3.9 KM
Union CityUnion CityReady-Mix Concrete Manufacturing
327320
 LIKELY ACTIVE16.7 KM
Tournesol Siteworks LLCUnion CityAll Other Plastics Product Manufacturing
326199
 ACTIVE17.8 KM
Central Concrete Supply - a US Concrete CompanyHaywardReady-Mix Concrete Manufacturing
327320
 UNVERIFIED19.3 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

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, EIS, NPDES, RCRAINFO, TRIS · EPA site type STATIONARY.

  • EPA Facility Registry ServiceEXISTENCE
    Record 110001157364 · first seen FEB 2024 · last seen AUG 2024
  • EPA ECHO compliance recordsOPERATING
    first seen DEC 2022 · last seen DEC 2022

IN SAN MATEO COUNTY19 other plants share this one’s industry (Cement and Concrete Product Manufacturing, NAICS 3273); 2 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: HARBOR READY-MIX · OCT 2026
Street address
EPA: 123 SEAPORT BOULEVARD · OCT 2026
City
EPA: REDWOOD CITY · OCT 2026
State
EPA: CA · OCT 2026
County (FIPS code)
EPA: 06081 · OCT 2026
CoordinatesSOURCES DISAGREE
Census geocoder: 37.494141078353,-122.213502561729 · SEP 2026
EPA: 37.49375,-122.213344 · OCT 2026 · ON THIS PAGE
Hazardous waste generator (RCRA)
EPA ECHO: none · OCT 2026

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