Capabilities

Environmental Drilling

DPT

This is where we started and continue to serve our customer’s needs. ‘Direct Push Technology’ (DPT) still provides a low impact, no IDW, cost effective methodology for sampling soil, water and vapor on site. Geo Lab provides truck and track carriers to allow access to open and ‘difficult’ to access sites.
  • Soil Sampling (using ‘Macro-core’ or dual tube techniques)
  • Water sampling (temporary wells and discreet sampling)
  • Vapor Sampling
  • Piezometer installation
  • Small diameter monitoring well installation (3/4” to 1” pre-packs)
  • Injection point or well installation

HSA

The vast majority of monitoring well installation is still completed using ‘Hollow Stem Augers’ (HSA). This tried and true technology enables high quality well installation by providing a temporary casing through which well materials can be accurately placed at depth along with providing the capability to characterize soil layers and accurately detect water level during drilling operations.

  • Monitoring well installation
  • Injection well installation
  • Sparge well installation
  • Remediation system point installation
  • Vac point installation

Mud Rotary

In cases where litohology is not stable, there is a need to install a temporary barrier for intensely saturated zones and areas where there are underground ‘flowing’ zones. When this is a requirement, Geo Lab recommends mud rotary drilling where a drilling fluid or slurry is used to stabilize the borehole wall and move cuttings to the surface. This technology is ideally applied to the installation of deep wells and multiple cased wells in unconsolidated and saturated formations. Applications are similar to HSA and DTH.
  • Monitoring well installation
  • Injection well installation
  • Sparge well installation
  • Remediation system point installation
  • Vac point installation

DTH - Air Hammer

Air Hammer is the solution to HSA refusal, when competent rock halts the process of well installation using traditional methods. DTH – Air Hammer is a cost effective solution providing rapid tool string advancement for instances where minor or significant rock penetration is required and indications of rock lithology are not required.
  • Type II monitoring wells with ‘rock sockets’
  • Type III wells into a water bearing fracture zone
  • Air sparge wells
  • Discreet water sampling

Rock Coring

While DTH provides a very rapid tool string advancement, some jobs require information on subsurface rock characterization and fracture zones. In those instances, coring tools are used to both penetrate the rock and recover rock cores to gather that information. There are other instances where coring might be preferred.