Chadwick & Trefethen INC

What they make

Where it is

Other plants nearby

No other listed facility within 40 km shares this one’s four-digit industry code, or this record has no coordinates to measure from.

Also at this address

No other federal record shares this street address.

Where this record comes from

2 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 RCRAINFO · EPA site type STATIONARY.

• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record NH|portsmouth|50 borthwick ave · first seen APR 2020 · last seen APR 2020
• EPA Facility Registry ServiceEXISTENCE
  Record 110004097398 · first seen JAN 2012 · last seen JAN 2012

IN ROCKINGHAM COUNTY1 other plant shares this one’s industry (Cutlery and Handtool Manufacturing, NAICS 3322); 1 of them has 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: CHADWICK & TREFETHEN INC · NOV 2026

Street address

EPA: 50 BORTHWICK AVE · NOV 2026

City

EPA: PORTSMOUTH · NOV 2026

State

EPA: NH · NOV 2026

County (FIPS code)

EPA: 33015 · NOV 2026

Coordinates

EPA: 43.05918,-70.79623 · NOV 2026

Employees (band)

SBA PPP: 1-19 · APR 2020

PPP loan

SBA PPP: PPP loan x1, approved 2020-04-13, 6 jobs reported · APR 2020

Hazardous waste generator (RCRA)

EPA ECHO: none · NOV 2026