Facility	City	Industry	Status	Distance
Atmosphere Heat Treating INC.	Wixom	Metal Heat Treating 332811	LIKELY ACTIVE	9.9 KM
Hawthorne Hydroponics LLC	Wixom	Pesticide and Other Agricultural Chemical Manufacturing 325320	UNVERIFIED	9.9 KM
Tribar Technologies	Wixom	Electroplating, Plating, Polishing, Anodizing, and Coloring 332813	LIKELY ACTIVE	10.2 KM
Tiodize Co., INC. - Michigan Division	Wixom	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers 332812	UNVERIFIED	10.4 KM
March Coatings Plant 2	Brighton	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers 332812	LIKELY ACTIVE	11.9 KM

Every listed plant in Oakland County

Also at this address

No other federal record shares this street address.

Where this record comes from

6 sources hold this plant, and 11 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, BR, EIS, NPDES, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

OSHA injury and illness reportsOPERATING
Record 696436 · first seen DEC 2025 · last seen DEC 2025
DOL Form 5500 retirement plan filingsOPERATING
Record 381586170|MI|48178|550 n mill st · first seen DEC 2024 · last seen DEC 2024
EPA ECHO compliance recordsOPERATING
first seen MAR 2022 · last seen MAR 2022
SBA Paycheck Protection Program loan recordsEXISTENCE
Record MI|south lyon|550 n mill st · first seen JAN 2021 · last seen JAN 2021
EPA Facility Registry ServiceEXISTENCE
Record 110000406212 · first seen JUN 2017 · last seen JUN 2017
SBA 7(a) and 504 loan recordsEXISTENCE
first seen JUL 2015 · last seen JUL 2015

IN OAKLAND COUNTY74 other plants share this one’s industry (Coating, Engraving, Heat Treating, and Allied Activities, NAICS 3328); 21 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: SUN STEEL TREATING INC · OCT 2026
Street address: EPA: 550 MILL ST. · OCT 2026
City: EPA: SOUTH LYON · OCT 2026
State: EPA: MI · OCT 2026
County (FIPS code): EPA: 26125 · OCT 2026
Coordinates: EPA: 42.46526,-83.64555 · OCT 2026
Employees (band): OSHA: 20-99 · DEC 2025
Retirement plan filing (Form 5500): DOL: 42 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
PPP loan: SBA PPP: PPP loan x2, approved 2021-01-21, 53 jobs reported · JAN 2021
Hazardous waste generator (RCRA): EPA ECHO: none · OCT 2026
SBA loans: SBA: 7a loan x4, jobs 60.0 · JUL 2015

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