Facility	City	Industry	Status	Distance
Bartkus Oil CO	Longmont	Petroleum Refineries 324110	UNVERIFIED	16.2 KM
Bartkus Oil CO	Boulder	Petroleum Refineries 324110	UNVERIFIED	22.2 KM
Lafarge West, INC.	Boulder	Asphalt Paving Mixture and Block Manufacturing 324121	UNVERIFIED	21.9 KM
Aggregate Industries - Wcr, INC.	Longmont	Asphalt Paving Mixture and Block Manufacturing 324121	UNVERIFIED	22.2 KM
Asphalt Spec-port Recycling Plant	Erie	Asphalt Paving Mixture and Block Manufacturing 324121	LIKELY ACTIVE	24.3 KM

Every listed plant in Boulder County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold 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 AIR, AIRS/AFS, EIS · EPA site type STATIONARY.

EPA Facility Registry ServiceEXISTENCE
Record 110001431950 · first seen JUN 2017 · last seen JUN 2017
EPA ECHO compliance recordsOPERATING
first seen FEB 2004 · last seen FEB 2004

IN BOULDER COUNTY6 other plants share this one’s industry (Petroleum and Coal Products Manufacturing, NAICS 3241); 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: REX OIL CO INC · OCT 2026
Street address: EPA: 431 4TH AVE · OCT 2026
City: EPA: LYONS · OCT 2026
State: EPA: CO · OCT 2026
County (FIPS code): EPA: 08013 · OCT 2026
Coordinates: EPA: 40.222956,-105.269921 · OCT 2026

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