Carrier profile · USDOT 1977671 · Updated Jun 13, 2026
WILLIAM H DUNCAN III
DBA GARYS SEPTIC TANK SERVICE
2 power unitsWALLA WALLA, WA50/100
AUTHORITY STATUS UNKNOWN
Network & Fraud
Reincarnation chains, shared-VIN links, common domains and officers, and owner-group affiliations — the chameleon / double-broker signals that name-and-USDOT lookups miss.
Shares a registration email domain with other carriers
@ya.com — 3 carriers: USDOT 3026949USDOT 3051443
Shares a company officer with other carriers
william duncan — 11 carriers: USDOT 324992USDOT 1276816USDOT 1498474USDOT 1603534USDOT 1626023USDOT 1927189USDOT 3148264USDOT 3302079
Owner / group view· confidence: email domain + officer
Owner / group view
Affiliated authorities
Collapses 13 related authorities · joined by email domain + officer
- Authorities
- 13
- Combined power
- 38
- States
- 12
- Oldest authority
- Aug 11, 1988
- Active now
- 10
- WILLIAM H DUNCAN III· viewingUSDOT 19776712PU
- THE STEPHEN B CHURCH COUSDOT 32499212PU
- ROCA CARRIERS INCUSDOT 30514439PU
- WDDUNCAN SERVICES LLCUSDOT 33020794PU
- D&S COSTUMS LLCUSDOT 41333254PU
- WILLIAM DUNCANUSDOT 16035342PU
- WILLIAM DUNCANUSDOT 16260231PU
- BEST CONCRETE USA INCUSDOT 30269491PU
- WILLIAM DUNCANUSDOT 14984741PU
- WILLIAM DUNCANUSDOT 12768161PU
- WILLIAM DUNCANUSDOT 19271891PU
- WILLIAM DUNCANUSDOT 31482640PU
- TRI ARROW FREIGHT LLCUSDOT 44988920PU
Affiliated entities· hover to preview