SUBSURFACE TESTING

SJB owns and operates a fleet of 15 drill rigs which feature some of the most advanced drill units currently available.

Our drill rigs include:

• Small truck-mounted rigs
  • CME 45's
  • CME 55's
  • CME 75's
  • CME 85's
• Failing F-10's
• ATV rigs
  • Track-mounted CME 45's
  • Track-mounted CME 850's
• Diedrich D50 mounted on a Morooka carrier
• Rubber-tired ATVs
  • CME 550
• Skid rigs
• Barge rigs

We also operate a fleet of support vehicles for the rigs including water trucks, pipe carriers, pickups, four-wheel drive trucks and equipment carriers. We provide mobile equipment and personnel decontamination trailers equipped with high-temperature, high pressure washers, portable decontamination pads and fluid pumps.

All equipment is maintained by our in-house staff of mechanics to ensure that it arrives on-site mechanically sound and ready to begin work.

Our monitoring, soil vapor, and recovery well installation experience covers a wide range of well sizes, configurations, geologic conditions and materials, including PVC, Teflon, fiberglass and stainless steel.  We are well equipped to drill in excess of 400 feet, and we have rigs capable of drilling borehole diameters ranging from 2 to 16 inches, vertical or angled.  We have also completed multiple rig investigation assignments for both environmental and geotechnical projects.

Drilling techniques include:

• Hollow stem auger
• Mud/Air rotary
• Angle drilling
• Shelby tubes (2” and 3”) and Osterberg equipment
• Dennison barrel
• CME continuous sample
• Hydropunch II
• Dutch cone
• Vane shear equipment
• Hydraulic pressure testing
• Conventional coring
• Wireline coring
• Split spoon sampling (2” and 4.5”)