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.