Bring the site details into the conversation
Start with the address, intended use, requested dates and an on-site contact. Describe the access route and the available standing area, including gates, surface conditions and any time restrictions.
Ask what is included in the arrangement, what you need to prepare and how changes will be handled. Availability, delivery and collection windows are confirmed for your location; a quote request is not a reservation.
Coordinate with the rest of the rental
If you also need portable toilets or handwashing, include those in the same request. Coordinate placement so one delivery does not block another supplier or an ongoing service visit.
Explain the connection and expected use
Describe what will discharge into the tank, the equipment involved and the anticipated operating period. Ask the rental team to confirm compatibility and capacity for the application. Tank selection should be based on the actual connection and use, not on a generic storage estimate.
Keep pump-out access in the layout
The placement needs to support repeated service as well as initial delivery. Identify who will provide access and how changes in use will be reported. Ask how service visits are arranged and what to do if the expected demand changes during the rental.
Questions worth asking before booking
Is a holding tank the same as a fresh-water tank?
Do not treat them as interchangeable. Explain the intended application and ask for equipment specifically suitable for that use before confirming the rental.