Stack Metallurgical Services, LLC

5938 N Basin Ave, Pob 17176, Portland, OR 97217

ACTIVELAST SEEN IN FEDERAL DATA DEC 2025 · 4 SOURCES

Operating signal within 12 months from two or more independent sources.

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What they make

Metal Heat Treating332811

Where it is

45.56665, -122.70680 · CENSUS TIGER

COUNTY

Multnomah County

METRO AREA

Portland-Vancouver-Hillsboro, OR-WA

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Other plants nearby

Facility	City	Industry	Status	Distance
Rem Steel Sales Incorporated	Portland	Rolled Steel Shape Manufacturing 331221	UNVERIFIED	2.6 KM
Dura Industries	Portland	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers 332812	LIKELY ACTIVE	2.2 KM
Columbia American Plating Site	Portland	Electroplating, Plating, Polishing, Anodizing, and Coloring 332813	UNVERIFIED	2.7 KM
Schoolhouse Electric CO	Portland	Electroplating, Plating, Polishing, Anodizing, and Coloring 332813	UNVERIFIED	2.9 KM
Zinkpower-portland LLC	Portland	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers 332812	LIKELY ACTIVE	3.0 KM

Every listed plant in Multnomah County

Also at this address

No other federal record shares this street address.

Where this record comes from

4 sources hold this plant, and 9 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 ICIS, NPDES, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

OSHA injury and illness reportsOPERATING
Record 1406153 · first seen DEC 2025 · last seen DEC 2025
SAM.gov entity registrationOPERATING
Record E23YAPM4ZEG3 · first seen DEC 2025 · last seen DEC 2025
EPA Toxics Release InventoryOPERATING
first seen DEC 2024 · last seen DEC 2024
EPA Facility Registry ServiceEXISTENCE
Record 110023028061 · first seen MAY 2019 · last seen MAY 2019

ALSO RECORDED ASSTACK METALLURGICAL SERVICES

IN MULTNOMAH COUNTY34 other plants share this one’s industry (Coating, Engraving, Heat Treating, and Allied Activities, NAICS 3328); 10 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.

NameSOURCES DISAGREE: EPA: STACK METALLURGICAL SERVICES · JUL 2026; SAM.gov: STACK METALLURGICAL SERVICES, LLC · DEC 2025 · ON THIS PAGE
Street address: EPA: 5938 N BASIN AVE · JUL 2026 · ON THIS PAGE; SAM.gov: 5938 N BASIN AVE · DEC 2025 · ON THIS PAGE
City: EPA: PORTLAND · JUL 2026 · ON THIS PAGE; SAM.gov: PORTLAND · DEC 2025 · ON THIS PAGE
State: EPA: OR · JUL 2026 · ON THIS PAGE; SAM.gov: OR · DEC 2025 · ON THIS PAGE
County (FIPS code): EPA: 41051 · SEP 2026
Coordinates: EPA: 45.566648,-122.706799 · JUL 2026
Employees (band): OSHA: 20-99 · DEC 2025
CAGE code: SAM.gov: 36ZC2 · DEC 2025
SAM registration expires: SAM.gov: 2026-12-15 · DEC 2025

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