22 Boreholes Delivered in 4 Days: We Coordinated Geotechnical Drilling Across 5 Greater Sydney Sites
22 boreholes across 5 Greater Sydney sites in 4 days. Progressive bore logs issued as each site completed. One drilling subcontractor, consistent field procedures throughout.
The Challenge: Coordinating Five Sets of Field Requirements Within One Programme
A geotechnical consulting firm needed investigations completed across five development sites in Parramatta, Blacktown, Randwick, Hornsby, and Sutherland as part of a staged residential and mixed-use programme.
Each location came with its own bore plan, access conditions, investigation depths, and testing requirements. Managing separate drilling arrangements for every site would have added another layer of coordination to an already staged programme.
The consultant instead needed a drilling subcontractor for a multi-site investigation programme in Sydney that could coordinate all five locations while maintaining consistent field procedures from the first site to the last.
The Solution: Treating Five Sites as One Coordinated Field Programme
TerraForma Drilling reviewed all site requirements before mobilisation and sequenced the programme to reduce travel and maximise daily output over four days.
The programme included:
- Coordinating drilling across five separate Greater Sydney locations.
- Completing 22 boreholes across the programme to the investigation depths specified for each site.
- Carrying out Standard Penetration Testing (SPT) at the nominated intervals using the same calibrated equipment throughout.
- Retaining and labelling samples from each borehole in line with the consultant's requirements.
- Maintaining consistent field testing procedures across all five locations.
- Issuing bore logs progressively as individual sites were completed rather than holding documentation until the entire programme was finished.
For a geotechnical drilling contractor working across multiple sites in Greater Sydney, consistency mattered just as much as field productivity. Using the same equipment and testing approach throughout gave the consultant comparable field data across the programme.
The Outcome: Reporting Started While Drilling Was Still Underway
All five investigations and 22 boreholes were completed across four consecutive field days.
But the programme's value wasn't only in how quickly the drilling was completed.
Bore logs for the first three sites were issued while fieldwork on the remaining locations was still underway. This allowed the consultant to start preparing reports in parallel instead of waiting for the entire five-site programme to finish.
By the time the final locations were completed, reporting on the earlier sites was already progressing.
Why Multi-Site Programmes Need More Than Site-by-Site Drilling
A staged investigation across several locations creates a different coordination challenge from a single-site project.
Programme sequencing, equipment consistency, sample identification, field documentation, and the timing of bore log delivery all affect how efficiently the consultant can manage the wider investigation.
Working with a single SPT testing subcontractor for a staged investigation programme in NSW also helps maintain consistent field procedures across locations, giving the consultant a more coordinated dataset to work from.
“We needed the same drilling and testing approach across all five sites, and TerraForma handled it as one programme for us. The progressive bore logs were very helpful because our team could start on the earlier reports while drilling continued at the other sites.”
Frequently Asked Questions
Yes. A drilling subcontractor for a multi-site investigation programme in Sydney can coordinate bore plans, access requirements, testing, sampling, and field documentation across several locations. In this programme, TerraForma Drilling coordinated 22 boreholes across five Greater Sydney sites over four consecutive field days.
Using one geotechnical drilling contractor across multiple sites in Greater Sydney can simplify programme coordination and help maintain consistent field procedures and equipment. It also allows drilling and documentation to be sequenced around the consultant's wider investigation and reporting programme.
Yes. Where the programme allows, bore logs can be issued progressively as individual sites are completed. On this project, TerraForma Drilling provided logs for the first three sites while drilling continued at the remaining locations, allowing the consultant to begin report preparation in parallel.
Five Sites Shouldn't Mean Five Separate Workflows
TerraForma Drilling coordinates multi-site drilling programmes across Greater Sydney, helping geotechnical consultants keep fieldwork, bore log delivery, and report preparation moving as one programme rather than a series of disconnected jobs.