Geotechnical Drilling Services
Our first 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
Equipment Description

CME 75 – Santa Rosa
CME 75 High Torque Auger Rig
Industry premier heavy-duty environmental 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.
Limited Access Track Rigs

DR8K – Sacramento
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 10,3 00 lb.
All-Terrain Track Auger Rigs

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.
Remote Access – Portable – Auger Rig

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 .
Off-Road Support Equipment

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

Truck Rigs
Northern California

CME Rig
Santa Rosa

Truck Rigs
Northern California

CME Rig
Santa Rosa

DR10K Install Well Under Canopy
San Francisco

Morooka Track
In South San Francisco

DR8K
Petaluma

DR8K
Petaluma

DR8K
In Sacramento County

1993 – Portable Remote Access Rig Eureka
Humboldt County

Portable Off Track
On Creek Bed

Portable Remote Access Rig
In South Bay

Portable Remote Access Rig
In Fremont – South Bay

Portable Remote Access Rig
In Mountain View

Portable Remote Access Rig
Bay Area – Drilled & Sampled to 90′

Portable Remote Access Rig
SF Bay Area
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.