Describe the result you need
Start with the task: expose a marked water line at two crossings, clear soil around a repair, or dig a narrow trench within a defined work area. Include the number of locations and the approximate opening size and depth where known. Label depths as estimates until verified.
“One day of hydrovac” describes time, not a finished scope. If a crew needs a measured utility elevation before a bore can proceed, say that. If the purpose is access for another contractor to make a repair, explain the working space that contractor needs.
For a definition of the work, see utility locating versus potholing. Those terms should be clear in the request so nobody assumes surface locating, physical exposure, and surveying are all included in one line item.
Give dispatch a picture of the whole site
Include the exact address and entrance, not just the development name. A large campus or commercial property may have several entrances with very different routes to the work. Identify the on-site contact and any gate, escort, or check-in process.
- Truck position: where it can park relative to each exposure point.
- Access conditions: gate dimensions, turns, grade, soft ground, overhead obstructions, and surface restrictions.
- Work surface: lawn, aggregate, concrete, asphalt, or another surface; identify who opens hard surfacing.
- Work window: permitted site hours and the other crews depending on the result.
- Public access: sidewalks, parking stalls, traffic, or pedestrian routes that need a plan.
In a developed St. Louis property, staging and access coordination can be a substantial part of the job. At a rural Jefferson County site, a long approach or limited turnaround can change the truck plan. Photos and a marked-up aerial image help resolve those details before dispatch.
Separate digging time from the rest of the quote
Ask how each item below is handled. This is a comparison checklist, not a claim that every provider charges each item separately.
| Quote item | Question to ask |
|---|---|
| Mobilization and minimum charge | When does billable time start and stop? Is there a minimum? |
| Crew and equipment | What is included in the rate, and what needs separate coordination? |
| Water | What supply is planned, and how would refilling affect the work? |
| Spoil and disposal | Where will the material go, and what acceptance information is required? |
| Standby | How is waiting for site access, marks, or another crew handled? |
| Documentation | Are photos, exposure measurements, or survey coordination included? |
| Restoration | Who supplies backfill and restores lawn, pavement, or other surfacing? |
Read the scope and exclusions alongside the rate. Two prices can be reasonable and still cover different work. Our hydro excavation cost guide gives broader pricing context; a site-specific written quote is what establishes your job’s price.
Resolve utility and spoil questions before booking
Confirm the status of utility notifications, owner responses, and any private locating. Use the current Missouri 811 process rather than assuming the hydrovac booking makes the area ready to dig.
Tell the contractor about known contamination, unusual odors, old industrial uses, or material testing already performed. Do not treat hydrovac spoil as something that can simply be discharged into a ditch or storm drain. Agree on the destination and any testing or documentation required by the receiving facility before excavation begins.
Also identify who can approve a change if the expected conditions do not match the site. A named decision-maker helps keep a necessary scope change from becoming an extended wait with equipment on the property.
A request you can copy into your project notes
Site: address, entrance, and on-site contact.
Work: purpose, number of exposures, estimated dimensions, and surface type.
Access: truck position, photos, restrictions, and available work hours.
Coordination: locating status, other trades, and required measurements.
Completion: spoil destination, backfill, restoration, and requested date.
Use this information to request J1S hydrovac service. If the project combines exposure with installation, mention the utility trenching scope so the sequence can be reviewed together. You can leave unknowns marked as unknown; an honest gap is easier to plan around than an assumed depth or unrestricted access that is not actually available.