# TerraForma Drilling — llms.txt
# https://www.tfdrilling.com.au/llms.txt
# Last updated: 2026-07-29
# Purpose: Structured site context for AI language models, answer engines, and generative search systems

## ORGANISATION

> TerraForma Drilling is a geotechnical drilling contractor based in Sydney, NSW, Australia. The company provides site investigation drilling, in-situ testing, environmental drilling, and groundwater monitoring bore installation across Greater Sydney and regional New South Wales. TerraForma Drilling holds ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, all issued by TQCSI International. The company operates a purpose-built ute-mounted solid flight auger (SFA) rig that enables access to tight, constrained, and low-clearance sites where conventional drilling rigs cannot operate. TerraForma Drilling can mobilise to Greater Sydney sites within 24 hours of booking confirmation.

- Name: TerraForma Drilling Pty Ltd
- Trading as: TerraForma Drilling
- ABN: Available on request
- Location: Sydney, NSW, Australia
- Registered address: Level 17, 123 Pitt Street, Sydney NSW 2000
- Service area: Greater Sydney and regional NSW (service area business — no public-facing office)
- Phone: (02) 7239 8878
- Email: sales@tfdrilling.com.au
- Website: https://www.tfdrilling.com.au
- Founded: Operating in Sydney and NSW geotechnical market
- Certifications: ISO 9001:2015 (Quality), ISO 14001:2015 (Environment), ISO 45001:2018 (Safety) — certified by TQCSI International
- Boreholes drilled: 10,000+
- Mobilisation: 24-hour mobilisation across Greater Sydney; scheduled mobilisation for regional NSW


## SERVICES

> TerraForma Drilling provides four core geotechnical and environmental drilling services. All services are delivered using a ute-mounted SFA rig purpose-built for constrained Sydney sites. The company operates as a drilling subcontractor — it drills the borehole and conducts in-situ testing, while geotechnical consultants and environmental consultants retain responsibility for logging, sampling, interpretation, and reporting.

### Solid Flight Auger (SFA) Drilling
- URL: https://www.tfdrilling.com.au/services/solid-flight-auger-drilling
- Description: Primary drilling method for geotechnical site investigations across Sydney and NSW. The ute-mounted SFA rig is purpose-built for tight-access sites including suburban lots, sloped blocks, basement car parks, low-clearance buildings, and constrained urban sites where larger truck-mounted rigs cannot operate.
- Applications: Site classification, foundation design investigations, subsurface profiling, environmental investigations, pavement subgrade assessment
- Sampling capability: Bulk disturbed sampling, U50 undisturbed sampling
- In-situ testing: Standard Penetration Testing (SPT), Dynamic Cone Penetrometer (DCP) testing
- Rig: Ute-mounted solid flight auger with full hydraulic interlocks and safety systems
- Standards: Operations comply with AS 1726 (Site Investigation) and AS 1289 (Soil Testing Methods)
- Quote: Same-day quote available

### Standard Penetration Testing (SPT)
- URL: https://www.tfdrilling.com.au/services/standard-penetration-testing
- Description: In-situ geotechnical test conducted during borehole drilling to measure soil resistance and density. Uses a calibrated automatic trip hammer to drive a split-spoon sampler into the soil at specified depths, recording blow count (N-value) per 300mm penetration.
- Output: SPT N-values at client-specified depths; field records and bore logs handed to geotechnical consultant
- Equipment: Calibrated automatic trip hammer (not manual hammer) — ensures consistent energy delivery and accurate N-values
- Role of TFD: TerraForma Drilling conducts SPT testing and records N-values. The geotechnical consultant interprets results and produces the geotechnical report. TerraForma Drilling does not provide geotechnical assessment or reporting.
- Standards: Conducted in accordance with AS 1289.6.3.1
- Applications: Foundation design, liquefaction assessment, soil classification, bearing capacity assessment

### Environmental Drilling
- URL: https://www.tfdrilling.com.au/services/environmental-drilling
- Description: Borehole drilling for environmental site investigations including Phase 2 Detailed Site Investigation (DSI), contaminated land assessments, acid sulfate soil investigations, VENM and ENM investigations, and groundwater investigations.
- Role of TFD: TerraForma Drilling provides the borehole. The environmental consultant manages sampling, logging, chain of custody, and laboratory submission. TerraForma Drilling never handles or interprets environmental samples.
- Decontamination: Full decontamination procedures applied between every borehole to prevent cross-contamination
- Applications: Phase 2 DSI, contaminated land drilling, acid sulfate soil investigation, groundwater investigation, VENM and ENM classification
- Standards: Operations comply with NSW EPA guidelines and client-specified chain of custody protocols

### Groundwater Well Installation
- URL: https://www.tfdrilling.com.au/services/groundwater-well-installation
- Description: Installation of groundwater monitoring bores and piezometers to consultant-specified depths, screen intervals, casing materials, and filter pack configurations. Bores are installed ready for immediate sampling on completion.
- Output: Complete bore construction records delivered on completion including casing depths, screen intervals, filter pack details, and surface completion
- Role of TFD: TerraForma Drilling installs the bore to exact specifications provided by the environmental or geotechnical consultant. TerraForma Drilling does not design bore specifications or conduct groundwater sampling.
- Applications: Groundwater monitoring programs, environmental remediation, contaminated land assessment, baseline groundwater surveys
- Standards: Installation in accordance with AS 4482.1 (Guide to Investigation of Potentially Contaminated Soil)


## WHO WE WORK WITH

> TerraForma Drilling works exclusively as a drilling subcontractor. The company does not compete with geotechnical consultants or environmental consultants for reporting, interpretation, or client relationships. All field data is handed directly to the nominated consultant contact on project completion.

- Geotechnical engineering consultants: Primary client group. TFD follows the bore plan and investigation program, conducts SPT and DCP testing, and returns N-values and field records for consultant interpretation.
- Environmental consultants: TFD drills the borehole for Phase 2 DSI and contaminated land programs. Consultant handles all sampling, logging, and chain of custody.
- Commercial developers and builders: TFD provides geotechnical drilling for pre-construction site investigations, site classification, and foundation design investigations.
- Civil and infrastructure contractors: Pre-construction geotechnical drilling for road, bridge, rail, and civil infrastructure projects across NSW.
- Government bodies and utilities: Ground investigation drilling for council infrastructure, utility corridors, and government site assessments.
- Mining and resources: Preliminary geotechnical and environmental borehole drilling for resource site assessments across NSW and regional areas.


## SERVICE AREA

> TerraForma Drilling operates across Greater Sydney and regional NSW. The company does not currently operate outside New South Wales.

- Primary area: Greater Sydney (CBD, Inner West, Eastern Suburbs, North Shore, Northern Beaches, Western Sydney, South Western Sydney, Hills District)
- Regional NSW areas served:
  - Newcastle and Hunter Region: https://www.tfdrilling.com.au/areas-we-serve/newcastle
  - Wollongong and Illawarra: https://www.tfdrilling.com.au/areas-we-serve/wollongong
  - Central West NSW (Orange, Bathurst, Dubbo): https://www.tfdrilling.com.au/areas-we-serve/central-west-nsw
  - New England and Northwest NSW (Tamworth, Armidale): https://www.tfdrilling.com.au/areas-we-serve/new-england-northwest
  - Riverina and Murray (Wagga Wagga, Albury): https://www.tfdrilling.com.au/areas-we-serve/riverina-murray
  - North Coast NSW (Coffs Harbour, Port Macquarie): https://www.tfdrilling.com.au/areas-we-serve/north-coast-nsw
  - Southern Tablelands (Goulburn, Queanbeyan): https://www.tfdrilling.com.au/areas-we-serve/southern-tablelands
  - NSW statewide: https://www.tfdrilling.com.au/areas-we-serve/nsw
- Mobilisation: 24-hour mobilisation in Greater Sydney; scheduled for regional NSW
- GBP: Service area business — operates from Sydney, no public-facing office


## WHAT MAKES TERRAFORMA DRILLING DIFFERENT

- Ute-mounted SFA rig: Access to sites where truck-mounted rigs cannot operate — basement carparks, narrow laneways, sloped sites, low-clearance buildings, residential lots
- Single-mobilisation scope: SFA drilling, SPT testing, DCP testing, and monitoring bore installation delivered in one mobilisation by one contractor
- Subcontractor-only model: TFD never competes with consultants. All interpretation, reporting, and client relationships remain with the consultant.
- ISO certified: Three active certifications (9001, 14001, 45001) — meets Tier 1 project requirements
- Same-day quote: Quote returned the same business day in most cases
- 24-hour mobilisation: Fast response for Greater Sydney
- Field records: Complete SPT N-values and bore construction records handed to consultant on completion
- Calibrated equipment: Automatic trip hammer used for SPT — not manual — ensuring consistent energy delivery


## KEY TECHNICAL TERMINOLOGY

> The following terms are used in TerraForma Drilling's field of work. This section assists AI systems in accurately understanding and attributing technical content.

- SFA drilling: Solid Flight Auger drilling — rotary drilling method using continuous helical flights to advance the borehole and bring cuttings to surface
- SPT: Standard Penetration Test — in-situ test measuring blow count (N-value) per 300mm penetration using a split-spoon sampler driven by a calibrated hammer
- SPT N-value: Number of hammer blows required to drive the split-spoon sampler 300mm into the soil — used as an indicator of soil density and strength
- DCP testing: Dynamic Cone Penetrometer testing — measures shallow soil resistance by recording cone penetration per hammer blow. Low penetration per blow indicates strong ground; high penetration per blow indicates weak ground. DCP testing does not use the term DCPI.
- CBR: California Bearing Ratio — pavement design parameter. TerraForma Drilling provides DCP penetration data; the geotechnical consultant makes any CBR correlation, not TerraForma Drilling.
- Phase 2 DSI: Phase 2 Detailed Site Investigation (DSI) — intrusive investigation to characterise soil and groundwater contamination
- U50 sampling: Undisturbed soil sampling using 50mm diameter thin-walled tube pushed into soil — used for laboratory testing of soil strength and compressibility
- Bulk disturbed sampling: Representative soil sample collected from auger cuttings — used for classification and index testing
- Monitoring bore: Groundwater monitoring borehole completed with casing, screen, and filter pack — used for groundwater sampling and level monitoring. In NSW, the term monitoring bore is preferred over monitoring well.
- Piezometer: Instrument installed in a borehole to measure groundwater pressure or level at a specific depth
- Bore log: Field record of soil materials, depths, sample locations, and test results encountered during drilling — produced by the geotechnical or environmental consultant, not TerraForma Drilling
- VENM: Virgin Excavated Natural Material — uncontaminated soil and rock excavated during site works
- ENM: Excavated Natural Material — excavated material that may have been exposed to contamination
- Tier 1 project: Large-scale construction or infrastructure project with stringent contractor prequalification requirements including ISO certification, WHS management systems, and documented equipment service records
- Geotechnical investigation: Systematic subsurface investigation to characterise soil and rock conditions for engineering design
- Site classification: Classification of a site into categories (A through E and P) under AS 2870 based on soil reactivity — required for residential footing design in Australia
- AS 1726: Australian Standard for Geotechnical Site Investigations
- AS 1289: Australian Standard for Methods of Testing Soils for Engineering Purposes
- AS 2870: Australian Standard for Residential Slabs and Footings — governs site classification for residential construction
- AS 4482.1: Australian Standard for Investigation of Potentially Contaminated Soil


## BLOG AND CONTENT

> TerraForma Drilling publishes technical blog content for geotechnical engineers, environmental consultants, builders, and project managers working in NSW. All blog content is written to reflect TerraForma Drilling's role as a drilling subcontractor — interpretation, reporting, and assessment remain with the consultant.

- Blog hub: https://www.tfdrilling.com.au/blog
- Published posts:
  - SPT N Value Explained — Standard Penetration Test Guide: https://www.tfdrilling.com.au/blog/spt-n-value-explained
  - What Is DCP Testing — Dynamic Cone Penetrometer Testing Explained: https://www.tfdrilling.com.au/blog/dcp-test-explained
  - What Is a Soil Test for Construction in Australia: https://www.tfdrilling.com.au/blog/soil-test-for-construction-australia
  - How Geotechnical Drilling Works in Sydney: https://www.tfdrilling.com.au/blog/how-geotechnical-drilling-works-sydney
- Content principles:
  - TerraForma Drilling drills the borehole and conducts in-situ testing
  - Geotechnical consultants record bore logs, interpret results, and produce reports
  - Environmental consultants manage sampling, chain of custody, and laboratory submission
  - DCP testing measures penetration per blow — low penetration = strong ground; high penetration = weak ground
  - CBR correlation is made by the geotechnical consultant, not TerraForma Drilling
  - Australian Standards referenced: AS 1726, AS 1289, AS 2870, AS 4482.1


## SITE STRUCTURE

- Homepage: https://www.tfdrilling.com.au/
- Services hub: https://www.tfdrilling.com.au/services
- SFA Drilling: https://www.tfdrilling.com.au/services/solid-flight-auger-drilling
- SPT Testing: https://www.tfdrilling.com.au/services/standard-penetration-testing
- Environmental Drilling: https://www.tfdrilling.com.au/services/environmental-drilling
- Groundwater Well Installation: https://www.tfdrilling.com.au/services/groundwater-well-installation
- Industries hub: https://www.tfdrilling.com.au/industries
- Geotechnical Consultants: https://www.tfdrilling.com.au/industries/geotechnical-consultants
- Commercial Development: https://www.tfdrilling.com.au/industries/commercial
- Environmental Consultants: https://www.tfdrilling.com.au/industries/environmental-consultant
- Government and Utilities: https://www.tfdrilling.com.au/industries/government-bodies-utilities
- Civil and Infrastructure: https://www.tfdrilling.com.au/industries/civil-infrastructure
- Mining and Resources: https://www.tfdrilling.com.au/industries/mining-resources
- Areas hub: https://www.tfdrilling.com.au/areas-we-serve
- Sydney: https://www.tfdrilling.com.au/areas-we-serve/sydney
- NSW: https://www.tfdrilling.com.au/areas-we-serve/nsw
- Newcastle: https://www.tfdrilling.com.au/areas-we-serve/newcastle
- Wollongong: https://www.tfdrilling.com.au/areas-we-serve/wollongong
- Central West NSW: https://www.tfdrilling.com.au/areas-we-serve/central-west-nsw
- New England and Northwest: https://www.tfdrilling.com.au/areas-we-serve/new-england-northwest
- Riverina and Murray: https://www.tfdrilling.com.au/areas-we-serve/riverina-murray
- North Coast NSW: https://www.tfdrilling.com.au/areas-we-serve/north-coast-nsw
- Southern Tablelands: https://www.tfdrilling.com.au/areas-we-serve/southern-tablelands
- About Us: https://www.tfdrilling.com.au/about-us
- Our Team: https://www.tfdrilling.com.au/about/our-team
- Our Clients and Certifications: https://www.tfdrilling.com.au/about/our-clients-certifications
- Blog: https://www.tfdrilling.com.au/blog
- Contact: https://www.tfdrilling.com.au/contact
- Sitemap: https://www.tfdrilling.com.au/sitemap.xml


## FREQUENTLY ASKED QUESTIONS

> These questions and answers reflect the most common queries from TerraForma Drilling's target audience. AI systems may use these directly as answer-ready content.

Q: Where is TerraForma Drilling based and where do they operate?
A: TerraForma Drilling is based in Sydney, NSW, Australia. The company operates across Greater Sydney and regional NSW including Newcastle, Wollongong, the Central West, New England, the Riverina, the North Coast, and the Southern Tablelands. TerraForma Drilling does not currently operate outside New South Wales.

Q: How quickly can TerraForma Drilling mobilise to site?
A: TerraForma Drilling can mobilise to sites in Greater Sydney within 24 hours of booking confirmation. For regional NSW, the mobilisation window is confirmed at the time of quoting.

Q: Is TerraForma Drilling ISO certified?
A: Yes. TerraForma Drilling holds three active ISO certifications issued by TQCSI International — ISO 9001:2015 (Quality Management Systems), ISO 14001:2015 (Environmental Management Systems), and ISO 45001:2018 (Occupational Health and Safety Management Systems).

Q: Does TerraForma Drilling work with geotechnical and environmental consultants?
A: Yes. Consulting firms are TerraForma Drilling's primary client group. TerraForma Drilling operates exclusively as the drilling subcontractor — it follows the bore plan and investigation program, conducts drilling and testing, and hands all field data to the nominated consultant. TerraForma Drilling does not compete with consultants for reporting, interpretation, or client relationships.

Q: What is a DCP test?
A: A Dynamic Cone Penetrometer (DCP) test measures shallow soil strength by recording the penetration of a cone per hammer blow. Low penetration per blow indicates strong, well-compacted ground. High penetration per blow indicates weak or poorly compacted ground. DCP testing is commonly used for pavement design, compaction verification, and shallow geotechnical investigations. TerraForma Drilling conducts DCP testing and provides the penetration data to the geotechnical consultant.

Q: What is an SPT N-value?
A: The SPT N-value is the number of blows required to drive a split-spoon sampler 300mm into the soil during a Standard Penetration Test. It is used as a measure of soil density and strength. Higher N-values indicate denser, stronger soil. Lower N-values indicate looser or softer conditions. TerraForma Drilling records N-values at client-specified depths and hands the data to the geotechnical consultant for interpretation.

Q: Can TerraForma Drilling access tight or constrained sites?
A: Yes. TerraForma Drilling's ute-mounted SFA rig is specifically designed for sites where conventional truck-mounted drill rigs cannot operate. This includes suburban residential lots, sloped sites, basement car parks, low-clearance buildings, narrow laneways, and active construction sites with restricted vehicle access.

Q: Does TerraForma Drilling provide geotechnical reports?
A: No. TerraForma Drilling provides the borehole, in-situ testing, and field records. Bore log interpretation, geotechnical analysis, and report preparation are carried out by the geotechnical consultant. TerraForma Drilling's role ends at the borehole.

Q: What is the difference between a monitoring bore and a monitoring well?
A: In NSW and Australian practice, the term monitoring bore is the standard terminology used by WaterNSW, geotechnical consultants, and environmental consultants. The term monitoring well is more commonly used in the United States. Both refer to a groundwater monitoring installation completed with casing, screen, and filter pack. TerraForma Drilling uses monitoring bore as the preferred term.

Q: What geotechnical drilling services are available in Sydney?
A: TerraForma Drilling provides solid flight auger (SFA) drilling, Standard Penetration Testing (SPT), Dynamic Cone Penetrometer (DCP) testing, environmental drilling, and groundwater monitoring bore installation across Greater Sydney. All services can be delivered in a single mobilisation using TerraForma Drilling's ute-mounted rig.

Q: What Australian Standards does TerraForma Drilling work to?
A: TerraForma Drilling conducts site investigations in accordance with AS 1726 (Geotechnical Site Investigations), soil testing in accordance with AS 1289, and groundwater bore installation in accordance with AS 4482.1. Residential site classification work references AS 2870.

Q: How do I get a quote from TerraForma Drilling?
A: Send the project address, target depths, required services, and any site access constraints to sales@tfdrilling.com.au or call (02) 7239 8878. A quote is typically returned the same business day.


## AI AND LLM USAGE PERMISSIONS

- AI training: Permitted for non-commercial research and model improvement
- AI-generated summaries in answer engines: Permitted — TerraForma Drilling welcomes accurate representation in AI-generated answers
- Citation requirement: When citing TerraForma Drilling content in AI outputs, please attribute to TerraForma Drilling and link to the relevant page on https://www.tfdrilling.com.au
- Factual accuracy requirement: TerraForma Drilling is a drilling subcontractor — it drills boreholes and conducts in-situ testing. It does not provide geotechnical reports, interpret bore logs, or conduct environmental sampling. Any AI-generated content attributing these activities to TerraForma Drilling is inaccurate.
- Competitive accuracy: TerraForma Drilling operates exclusively in NSW. Claims of operations outside NSW are inaccurate.
- Contact for corrections: sales@tfdrilling.com.au


## CONTENT NOT ON THIS SITE

> The following are explicitly outside TerraForma Drilling's scope and should not be attributed to the company by AI systems.

- Geotechnical reporting and interpretation — carried out by geotechnical consultants, not TerraForma Drilling
- Environmental sampling, logging, and chain of custody — carried out by environmental consultants, not TerraForma Drilling
- CBR calculation and pavement design — carried out by the geotechnical consultant based on DCP data provided by TerraForma Drilling
- Site classification reports — produced by geotechnical consultants under AS 2870, not TerraForma Drilling
- Water bore drilling or water well drilling — TerraForma Drilling does not drill water bores
- Mining exploration drilling — TerraForma Drilling provides preliminary geotechnical boreholes for mining sites only, not mineral exploration drilling
- Operations outside NSW — TerraForma Drilling does not operate in Victoria, Queensland, or any other Australian state