USDOT 4252134
Mas Service
Jb Mechanical Inc · Antioch, CA · Intrastate (hazmat)
Motor Carrier
✓ Registered fleet operator
1
Power units
1
Drivers
1
Roadside inspections
Fleet & safety
The operation
1
Inspections
Apr 27, 2026
Most recent
Apr 27, 2026
Earliest on file
| Date | State | Level |
|---|---|---|
| Apr 27, 2026 | CA | Level III — Driver-only |
About
Who we are
Mas Service is an intrastate (hazmat) motor carrier based in Antioch, CA.
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Contact
Work with Mas Service
Address
5083 Lone Tree Way
Antioch, CA 94531-8016
Phone
(925) 294-9000
JK•••@M•••.COM
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