Facility	City	Industry	Status	Distance
Baychem, INC	Menlo Park	Other Basic Inorganic Chemical Manufacturing 325180	ACTIVE	3.9 KM
Seaport Environmental - Refining	Redwood City	Petrochemical Manufacturing 325110	LIKELY ACTIVE	6.4 KM
Silicon Valley Clean Water	Redwood City	Other Basic Inorganic Chemical Manufacturing 325188	UNVERIFIED	10.4 KM
Fmc Corporation	Newark	Other Basic Inorganic Chemical Manufacturing 325188	UNVERIFIED	9.9 KM
Ashland Chemical CO	Newark	Other Basic Inorganic Chemical Manufacturing 325188	UNVERIFIED	10.1 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

5 sources hold this plant, and 10 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 BR, CA-ENVIROVIEW, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record TZAPMSMZ4MM6 · first seen SEP 2025 · last seen AUG 2026
EPA Toxics Release InventoryOPERATING
first seen DEC 2024 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Records 110002790141, 110071756298 · first seen JUL 2016 · last seen AUG 2024
SBA 7(a) and 504 loan recordsEXISTENCE
first seen SEP 2018 · last seen SEP 2018

ALSO RECORDED ASCS BIO COMPANY; H&H PEPTIDES

IN SAN MATEO COUNTY23 other plants share this one’s industry (Basic Chemical Manufacturing, NAICS 3251); 1 of them has 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: C S BIO CO · JUL 2026 · ON THIS PAGE; SAM.gov: C S BIO CO · AUG 2026 · ON THIS PAGE
Street address: EPA: 20 KELLY CT · JUL 2026 · ON THIS PAGE; SAM.gov: 20 KELLY CT · AUG 2026 · ON THIS PAGE
City: EPA: MENLO PARK · JUL 2026 · ON THIS PAGE; SAM.gov: MENLO PARK · AUG 2026 · ON THIS PAGE
State: EPA: CA · JUL 2026 · ON THIS PAGE; SAM.gov: CA · AUG 2026 · ON THIS PAGE
County (FIPS code): EPA: 06081 · SEP 2026
CoordinatesSOURCES DISAGREE: Census geocoder: 37.47529495879,-122.149468292505 · AUG 2026; EPA: 37.47539,-122.14957 · JUL 2026 · ON THIS PAGE
Website: SAM.gov: www.csbio.com · AUG 2026
CAGE code: SAM.gov: 1V5J4 · AUG 2026
SAM registration expires: SAM.gov: 2027-08-19 · AUG 2026
SBA loans: SBA: 504 loan x2 · SEP 2018

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