Masons Supply Company

What they make

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
CFComposite Fundamentals, INC	Seattle	Other Motor Vehicle Parts Manufacturing 336390	● ACTIVE	4.9 KM
Aaloktronix INC.	Seattle	Printed Circuit Assembly (Electronic Assembly) Manufacturing 334418	● ACTIVE	5.7 KM
SPSound Propeller Services INC	Seattle	All Other General Purpose Machinery Manufacturing 333999	◐ LIKELY ACTIVE	9.9 KM
FPFinning Power Solutions INC	Seattle	Other Engine Equipment Manufacturing 333618	◐ LIKELY ACTIVE	12.4 KM
RDRed Dot CORP	Tukwila	Air and Gas Compressor Manufacturing 333912	◇ UNVERIFIED	13.2 KM

Every listed plant in King County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 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 EIS, RCRAINFO, TRIS, WA-FSIS · EPA site type STATIONARY.

• EPA Facility Registry ServiceEXISTENCE
  Record 110000489542 · first seen MAY 2019 · last seen MAY 2019
• EPA ECHO compliance recordsOPERATING
  first seen OCT 2017 · last seen OCT 2017

IN KING COUNTY11 other plants share this one’s industry (Motor Vehicle Parts Manufacturing, NAICS 3363); 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: MASONS SUPPLY COMPANY · OCT 2026

Street address

EPA: 115 S DAWSON ST · OCT 2026

City

EPA: SEATTLE · OCT 2026

State

EPA: WA · OCT 2026

County (FIPS code)

EPA: 53033 · OCT 2026

Coordinates

EPA: 47.555302,-122.333268 · OCT 2026

Hazardous waste generator (RCRA)

EPA ECHO: none · OCT 2026