CALIFORNIA BORING INC.
Specializing in Directional Boring
Why Directional Drilling for your
replacement or new installation
 Paving
repair cost minimized
 Backfill cost reduced
 Minimal taxing of Landfills
 Reduction in Permit fees
 Minimal manpower required
 Footage per day installed with HDD
versus open trench
Step #1- Call Underground
Service Alert (USA)
Partner with Planning Department and
local field employees to select best line
location
 Sub-surface exploration

 Ground conditions
 Pothole existing underground Utilities
 Depending on depth requirement of new
installation, sewers may need to be
electronically located. ( we provide this
service)
CALIFORNIA BORING SUPERVISOR MEETING
WITH CUSTOMER TO COORDINATE INSTALL
JOB LAYOUT BEGINS
CALIFORNIA BORING SELF CONTAINED
DRILLING FLUID TRUCK AND HDD UNIT
Step #2- Pre-Construction
Meeting

Proper drill size is critical to match drill
to job and soil conditions and pipe size
diameter
 Proper area to set spud and receiving pits
 Pipe lay down area
 Fluids containment
Duck Bill and Sonde
Step #3- Checking Soil
Conditions

Contractor to check soil conditions to
see if they are reactive or non-reactive
and choosing the proper bentonite and
polymers for the soil conditions

Calculating the proper mud ratio for size
reamer being used
CALIFORNIA BORING
VERMEER 36 X 50 HDD UNIT
Step #4- Proper Locating System
Selection
Walkover locating system
 Wire line locating system

Step #5- Drilling the Pilot Hole

During drill operation, make sure to keep
drilling fluid returns throughout the bore
Step #6- Reamer Selection
Sandy soils
 Rocky soils

 Aggressive

Clay soils
 Paddle type
ONE OF MANY BORE SLOT REAMER CHOICES
DEPENDING ON SOIL CONDITIONS
CALIFORNIA BORING STOCKS A LARGE SELECTION OF
REAMERS FOR ANY SOIL CONDITIONS ENCOUNTERED
Step #7- Pre-Ream Bore Hole

Excavating the drilled bore path to allow
room for product pipe
 Ream and push back
 Ream and chase with drill rod
Step #8- Pulling Product Pipe
Proper swivel size
 Pipe or conduit placed on rollers to
protect pipe from damage.

BORE SLOT REAMER AND SWIVEL SHOWN IN
BORE RECEIVING PIT WITH NEW PIPE . OUR
VACUUM TRUCK REMOVES BORING FLUIDS
PROTECTIVE PIPE ROLLERS PREVENT PIPE FROM
BEING DAMGED DURING INSTALL INTO BORE SLOT
PIPE JOINED, PLACED ON PIPE ROLLERS , AND
READY TO BE PULLED BACK THROUGH BORE
Step #9- Drilling Fluids (MUD)
Containment
 Mud
containment constantly
monitored and controlled until
pipe installation is complete.
 Have
proper mud vacuuming
equipment on site during bore
and pull back
Drill rig is supported with its own vacuum unit. Larger
Vacuum Tanker Truck available
California Boring’s drilling fluids
containment pit.
Large pump truck parked along side pit.
California Boring Big Red Vacuum Truck
California Boring 2010
Electrical Projects
San Diego Gas & Electric
& Par Electric are just a
few of our satisfied
customers.
Electrical conduit installed in bore slot
Ground is excavated and shored to
depth of bore
 Track is set in on grade with the bore
 Bore machine set on track
 Casing is lowered into pit with auger
installed inside

Casing is forced into the ground
 Spinning auger is removing soil from
inside the casing
 Process is repeated until completion

Things to Keep in Mind
Used for larger pipe sizes and utilizes
steel casings
 Proper casing selection to the ground
conditions
 Casings larger than 30” in diameter
require OSHA permit
 Pits deeper than 20’ require engineered
shoring

Conclusion

Directional drilling and jack boring have
their advantages and disadvantages.

Cost and jobsite conditions will
determine which method is better fit for
the project.