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
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
- 1019 HIGHLAND ROAD, WALLA WALLA, WA, 99362
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (509) 529-8185
- Cell
- (509) 386-2723
- Web domain
- ya.com
Registration
- Officer
- William Duncan
- USDOT / docket
- 1977671
- First registered
- Dec 22, 2009
- Last MCS-150
- Oct 18, 2024 · 11,000 mi (2023)
- FMCSA safety rating
- Not rated
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
—CDL drivers
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.