A construction site fuel truck needs the gate, not the bid office
The bid office ZIP and the job ZIP are often different places. The truck serves the job.

Set the product before the pour
Highway trucks and pickups that belong on the public road take clear ULSD or gasoline. Eligible off-road iron is the dyed-diesel question. Mixing them in one tank is not a shortcut. If the site has both, say which tank is which.
Early on, a wagon may wet-hose because the job tank is not set. Later, the same distributor may drop into that tank. Tell them which phase this quote is, so they do not price a hose job as a transport.
The gate is the schedule
Write the delivery hour next to the crew’s start, the overhead clearance, and whether a semi can turn around. City jobs and plant sites add badges and curfews. A distributor who covers the ZIP on a map can still decline a site their truck cannot enter.
Search that ZIP on Bulk Fueling, pick the fuel, and open one profile. The quote goes to that company only. If they pass, open the next profile. Do not wait on a blast that this site does not send.
Questions
Should I search the contractor’s home office?
Search the site. Coverage is measured from the delivery point.
Can one truck bring gasoline and diesel?
Only if that distributor sells both and will load them for your stop. Ask in the notes. Do not assume a shared tank.