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Environmental/Geotechnical Drilling Services
  • Biological/Chemical Reagent Injection
  • Drillers Experienced in Heaving Sand Conditions
  • Sparge Point/Extraction Well Installation
  • Monitoring Well/Piezometer/Vapor Point Installation
  • Standard Penetration Test / Shelby Tubes
  • Well destruction (over-bore and pressure grout)
SIMCO Rotary Hollow Stem Rig
  • Limited Access (Trailer Mounted)
  • Low overhead clearance mast
  • Drilling mast pivots to allow angled drilling (30 deg)
  • Monitoring well, piezometer, and sparge well installation
  • Two Auger Sizes (ID) 3.25-inch to 50 feet and 6.25-inch to 20 feet
Geoprobe Truck-Mounted 6600DT
  • Soy-based Hydraulic Fluid
  • Macro-Core Capability to 100+ feet
  • Dual Tube Capability to 50+ feet
  • Screen Point Sampler Capability to 100+ feet
  • Probe-mounted jack hammer and concrete corer
  • Hydraulically-operated grout pump
  • Monitoring well closure via pressure grouting
  • Small diameter monitoring well/sparge well installation



LACO provides quality drilling services to consultants and property owners throughout California. With two C-57 licensed drillers on staff providing nearly 50 years of combined experience, LACO delivers complete project management and professional results consistently. Our established presence and expertise ensures that you'll receive direct savings, quality work and personalized service every time.

LACO's drilling team is supported by a broad range of environmental and geotechnical project experience that includes design and installation of monitoring wells, piezometers, vapor points and extraction/sparge wells for remediation systems. We own and operate both Geoprobe Direct Push 6600 series and Simco hollow-stem auger rigs to provide a complete package of drilling services under one contract.

Our work schedule and drilling activities are planned so that disruption to your business is kept to a minimum. LACO's standard of care extends to anticipating and adjusting to adverse hydrogeologic conditions and to clearing boring locations with utility and property owners.
"LACO has consistently met or exceeded our requirements on the many sites they have investigated for us."
Mickey Moore, General Manager
W.N. Tetrault
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