Cemex Construction Materials South LLC

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
GCGolden Concrete Lllp (sec Screen)	Longmont Area	Ready-Mix Concrete Manufacturing 327320	◇ UNVERIFIED	10.7 KM
LWLafarge West, INC.	Longmont	Ready-Mix Concrete Manufacturing 327320	◇ UNVERIFIED	10.9 KM
HIHolcim-wcr INC - Francis	Longmont Area	Ready-Mix Concrete Manufacturing 327320	◐ LIKELY ACTIVE	11.1 KM
Prometheus Materials INC.	Longmont	Cement Manufacturing 327310	● ACTIVE	11.8 KM
BRBoulder Ready Mix Concrete INC	Boulder	Ready-Mix Concrete Manufacturing 327320	◐ LIKELY ACTIVE	19.6 KM

Every listed plant in Boulder County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 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 AIR, AIRS/AFS, CEDRI, E-GGRT, EIS, ICIS, NCDB, NPDES, RCRAINFO, TRIS, TSCA · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen MAY 2026 · last seen MAY 2026
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2023 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110000467450 · first seen AUG 2021 · last seen AUG 2021

IN BOULDER COUNTY16 other plants share this one’s industry (Cement and Concrete Product Manufacturing, NAICS 3273); 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: CEMEX CONSTRUCTION MATERIALS SOUTH LLC · OCT 2026

Street address

EPA: 5134 UTE HIGHWAY · OCT 2026

City

EPA: LYONS · OCT 2026

State

EPA: CO · OCT 2026

County (FIPS code)

EPA: 08013 · OCT 2026

Coordinates

EPA: 40.20872,-105.22924 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: VSQG · OCT 2026