Carrier profile · USDOT 6789 · Updated Jun 13, 2026

THOS SOMERVILLE CO

77 power unitsavg 2.8 yrMulti-region · 8 statesUPPER MARLBORO, MD88/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
Verified linkstsconline.comFacebookFMCSA SAFER

Identity & Federal

The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.

Location

Physical address
16155 TRADE ZONE AVENUE, UPPER MARLBORO, MD, 20774
Operation
Interstate· Hazmat

Contact

Phone
(301) 390-9575
Fax
(301) 390-1108
Email
shirley

Registration

Officers
Michael Leisher · Doug Riley
USDOT / docket
6789
First registered
Jun 1, 1974
Last MCS-150
Jul 16, 2024 · 1,442,748 mi (2023)
FMCSA safety rating
Satisfactory · Feb 25, 2008
D-U-N-S
3242781

Fleet (self-reported · MCS-150)

77Power units
77Drivers
42CDL drivers
1,442,748Annual mileage

MCS-150 filing history· biennial-update cadence

Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.