Koppers Industries Portland Tar Plant
7540 Nw St Helens Rd, Portland, OR 97210
UNVERIFIED1 SOURCELAST SIGNAL —
Present in a source dataset, with no recent operating signal.
Location
ADDRESS
7540 Nw St Helens Rd
Portland, OR 97210
Portland, OR 97210
COORDINATES
45.57706, -122.75950
COUNTY
METRO AREA
Industry
PRIMARY NAICS
ALSO CLASSIFIED
Chemical Manufacturing
325132 325192 325199
EMPLOYMENT
Not reported
Sources
| SOURCE | EVIDENCE | FIRST SEEN | LAST SEEN |
|---|---|---|---|
| EPA FRS | EXISTENCE | OCT 2018 | OCT 2018 |
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| CITY | EPA FRS | JUL 2026 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| STATE | EPA FRS | JUL 2026 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.