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We use a wide range of drilling, soil sampling, and in-situ sampling techniques to provide data for engineering and design. This data can then be used to determine the type and use of preventative measures to mitigate possible settlement, soil movement, or the presence of groundwater that may adversely impact existing or proposed structures.

Your team at Holt Services Inc utilizes state-of-the art equipment and instruments to conduct your geotechnical testing with accuracy and to exacting standards.

We use a wide range of drilling, soil sampling, and in-situ sampling techniques to provide data for engineering and design.

Equipment

Direct Push Rigs

7 Geoprobe 7822DT
Geoprobe 7822DT

Capabilities

  • Direct push soil sampling
  • Groundwater sampling
  • Prepacked monitoring well installation
  • Hollow stem auger drilling
  • Mud rotary drilling
  • Air rotary drilling
  • Diamond core/rock coring
  • Standard penetration testing
  • Driven casing and wash boring
  • MIP/MIHPT/HPT/LIF HRSC
  • Limited-access and indoor drilling
  • Wireless and tethered remote operation
  • 4,000 ft-lbs rotary torque
  • GH63 hydraulic percussion hammer

Images

1 Geoprobe 54LT
Geoprobe 54LT

Capabilities

  • Direct push soil sampling
  • Groundwater sampling
  • Soil gas sampling and well installation
  • Prepacked monitoring well installation
  • Single rod and dual tube drilling configurations
  • Indoor/limited-access drilling
  • Low-clearance operation
  • Rough terrain operation
  • Tethered remote control
  • Hydraulic lateral swing for offset probe placement
  • 20,000 lb down force / 27,000 lb retraction force
  • GH42 hammer system

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Sonic Drilling

8 TSI 150 Sonic Rigs
TSI 150 Sonic Rigs

Capabilities

  • Sonic drilling up to 1,000 ft depth
  • Angle drilling
  • Casing up to 12” diameter
  • Continuous core sampling
  • Environmental soil sampling
  • Geotechnical investigation
  • Groundwater monitoring well installation
  • Standard penetration testing
  • Diamond core drilling
  • Indoor/low-clearance drilling
  • Limited-access and tight-terrain drilling
  • Wireline sampling
  • Radio remote operation

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Auger / Mud Rotary / Core Drilling

5 Mobile Drill B-57
Mobile Drill B-57

Capabilities

  • Hollow stem auger drilling
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Standard penetration testing
  • Geotechnical borings
  • Environmental soil sampling
  • High torque or high speed rotary head configurations
  • Truck or track-mounted configurations

Images

3 Mobile Drill B-58

Capabilities

  • Hollow stem auger drilling
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Standard penetration testing
  • Geotechnical borings
  • Environmental soil sampling
  • Truck or track-mounted configurations
1 Mobile Drill B-59

Capabilities

  • Hollow stem auger drilling
  • Standard penetration testing
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Reverse circulation drilling
  • Down-the-hole hammer drilling
  • Geotechnical borings
  • Environmental soil sampling
  • Rock coring
6 CME-75
CME-75

Capabilities

  • Hollow stem auger drilling
  • Large-diameter auger drilling
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Standard penetration testing
  • Monitoring well installation
  • Driven casing and wash boring
  • Limited-access and low-clearance drilling
  • 10,445 ft-lbs rotary torque

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3 CME-85
CME-85

Capabilities

  • Hollow stem auger drilling
  • Continuous flight auger drilling
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Standard penetration testing
  • Large diameter auger drilling
  • Rock coring
  • Monitoring well installation
  • Driven casing and wash boring
  • 22,950 ft-lbs max rotary torque
  • 490 RPM max rotary speed

Images

1 CME 850

Capabilities

  • Hollow stem auger drilling
  • Solid stem auger drilling
  • Large-diameter auger drilling
  • Mud rotary drilling
  • Diamond/Wireline Coring
  • Standard penetration testing
  • Continuous soil sampling
  • Monitoring well installation
  • All-terrain and soft ground operation
  • Independent hydrostatic track drive
  • 14,465 ft-lbs rotary torque
  • 28,275 lb retract / 18,650 lb pulldown force

Utility Location / Excavation

1 VacMaster System 4000
VacMaster System 4000

Capabilities

  • Air-vacuum excavation
  • Water-pressure excavation
  • Low-pressure washdown
  • Utility locating and exposure
  • Potholing
  • Probing to 12’ depth
  • Directional boring slurry cleanup
  • Valve box/catch basin/vault cleaning
  • Pavement cutting
  • Pipeline leak repair
  • Cathodic protection installation
  • Service line installation/termination
  • Dry and wet spoils separation
  • Hydraulic dump backfilling
  • Remote operation
  • Air tool operation
  • Environmental soil sampling
  • Sandblasting

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Drilling

  • Soil, rock and diamond coring
  • Vertical and angle drilling
  • 140 lb. and 300 lb. auto hammers with SPT energy calibrations
  • Instrumentation boreholes
  • Utility and surface settlement
  • Dewatering wells
  • Seismic casings
  • Groundwater monitoring wells
  • Pump test wells

Instrumentation Installation

  • Slope inclinometer casing
  • Sondex settlement casing
  • Anodes
  • Cathodic protection
  • Extensometers
  • Standpipe piezometers
  • Vibrating wire transducers
  • Vibrating wire piezometers (VWP)

Sampling

  • SPT 1.5 inch – 3 inch
  • Dames & Moore sampler
  • Shelby tube
  • Osterburg and Pitcher barrel sampling
  • Overwater drilling and sampling

Bring on your drilling projects

Contact us today to talk with a drilling professional about your project. Standard quotes are typically provided within 24 hours, often the same day.
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Clean Water Drilling & Well Services
Environmental Drilling
Geotechnical Drilling
Site Development
Injection Remediation
Hi-Res Site Characterization
Pump/Well Rehabilitation & Video Logging
Utility Clearance

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