Geotechnical Drilling Services

Our fist of hundreds of geotechnical drilling jobs started in 1986. We offer experienced and professional crews to help determine ground conditions and soil formations. To obtain this information we have a variety of truck, track and remote access drilling equipment.


Type of Services

  • Soil borings – hollow stem & solid flight augers
  • SPT sampling
  • CAL mod sampler
  • 5’ Dry core sampling
  • Selby tube sampler
  • Inclinometers
  • Piezometers
  • Monitor Wells

Groundwater Investigation - Wells Along Russian River - Sonoma County

Groundwater Investigation - Wells Along Russian River - Sonoma County


Equipment Description


Truck, track, Remote Access

Truck-Mounted Rigs


CME 75 High Torque Auger Rig

CME 75 - Santa Rosa



CME 75 High Torque Auger Rig

Industry premier heavy-duty geotechnical drilling rig.

  • Torque – 13,000 Ft.-lb
  • Augers up to 15”
  • Auto-hammer
  • In-hole-hammer
  • Mono-pump
  • 5’ Continuous Dry Sampler System
  • 8’ wide
  • 26’ long
  • 31.5’ high mast up, 11.3’ mast dn.

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Deeprock - DR5K

Slide Drilling - St. Helena - Napa County

Deeprock - DR5K

Medium Torque Truck Auger Rig- 15’ stroke, Fast with solid-flight augers for borings to 25’-30’ as can hang 10’ – 15’ of augers.

  • Auger Rig
  • Torque – 5,000 Ft.-lb.
  • Long stroke – 15’
  • Cathead, 140#, 30” drop
  • 8.25’ Wide
  • 22’ Long
  • 11.5’ high (mast dn.)
  • 25’ high (mast up)
  • Weight – 23,000 lb.

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Limited Access Track Rigs



Deeprock - DR8K

DR8K - Sacramento



Deeprock - DR8K

Rubber track auger rig- variable height mast. Excellent inside bldg. under power-lines, under canopies and inside narrow spaces. Can take 10” augers to 100’

  • Auger Rig
  • Angle drilling
  • Torque – 7500 ft-.lb
  • Auto-hammer
  • Mono Pump
  • Powers Portable rig for remote use
  • 5 ’-2” Wide
  • 13’ Long
  • 7 ’ 3” high (mast dn.)
  • Min. Ht. 8’-9” with SFA
  • Min. Ht. 9’-6” with HSA
  • Weight 10,300 lb.

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All-Terrain Track Auger Rigs



Morooka Track - All-Terrain Drill Rig

Creek Bed - Mendocino County

Morooka Track - All-Terrain Drill Rig

If you can walk it we can drill it.
Very stable. Slopes up to 30 degrees. Excellent on muddy sites.
Portable drill rig can be powered up to 250’ from this rig.

  • Augers - up to 11”
  • Torque – 3,000 ft-lb
  • Rubber tracks – 20” wide
  • Cathead and 140# drop hammer
  • 7’ wide
  • 13’ Long
  • 7 ’ high
  • Weight - 12,000 lb.

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Remote Access – Portable - Auger Rig


Portable Remote Access Auger Drill

Hillside Los Gatos


Portable Remote Access Auger Drill

Can be set up in remote locations – hillsides, under canopies, under bridges, in ditches, inside closets, in rooms, basements, etc.
Access to drill location can be through narrow door, through windows, over walls, down hillsides, etc.
Rig is hand carried to drill locations in components (mast, rotary head, base, cathead, controls, 140# drop hammer, samplers, rods, augers) and assembled over hole.
Two hydraulic hoses are extended from DR8K or Morooka rig to power Portable drilling rig. Maximum distance from power source – 250’

  • Augers up to 11”
  • Torque – 3,000 Ft.-lb.
  • Cathead and 140 lb .drop-hammer
  • Concrete coring
  • Rig can be bolted to concrete floor
  • Rig can be staked to hillside
  • Minimum passage width 24”.
  • Minimum work area 3’ X 6’
  • Minimum overhead 8’ with SFA & 9.5’ with HSA .

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Off-Road Support Equipment


Morooka Support Vehicle

All-Terrain - Northern California

Morooka Support Vehicle

All-terrain, rubber tracks.
It can go where our support trucks cannot go.

It has a hydraulic dump bed and is capable of moving pallets of materials, augers, rods, water tank, generator and other equipment.


  • Width – 7’
  • Length – 12’
  • Height – 6.5’
  • Weight – 12,000 lbs.


Other Equipment


Support trucks, pumps, generators, pressure washers, decon ponds, hoses, forklift, hopper, concrete core barrels, etc.


Photo Gallery

DR5K

DR5K
Oakland

DR8K - Angle Drilling

DR8K - Angle Drilling
Marin County

DR8K

DR8K
Sonoma County

DR5K

DR5K
St. Helena - Napa County

Morooka Track Rig

Morooka Track Rig
San Jose

1994 - Portable - Env.

1994 - Portable - Env.
Eureka

Portable Remote Access Rig

Portable Remote Access Rig
Santa Clara County

Portable Remote Access Rig

Portable Remote Access Rig
Walnut Creek - Contra Costa County

Portable Remote Access Rig

Portable Remote Access Rig
San Jose

1988 - Portable Remote Access Rig

1988 - Portable Remote Access Rig
San Rafael - Marin County

Drilled & Sampled to 90'

Drilled & Sampled to 90'
Bay Area

Portable Remote Access Rig

Portable Remote Access Rig
San Francisco Bay Area - Under Hwy 80

Click on the picture for more information

For more photos (click here) To go to our photo gallery

Health and Safety:


All personnel have current 40-hr OSHA health and safety training and participate in a medical surveillance program. We provide our own PPE.