related links

• Services Available
• SPT Hammer Efficiencies
• Equipment

QUICK LINKS

• Organization Chart
• Technical Teams
• Client Requests
• Memos to GS Staff
• Geotechnical Manual
• Soil and Rock Logging Manual
• Foundation Reports
• Geotechnical Design Reports
• GS Discussion Board
• 2006 FHWA Review
• Specifications
• Photo Galleries
• Geotechnical Education
• Industry Related

 

Office of Drilling Services

The Office of Drilling Services (ODS provides statewide drilling services for Geotechnical Services (GS) and other Departmental functions such as Construction and Maintenance. ODS operates standard and specialized equipment to handle the many unique and challenging investigations required to support the Department's mission. Drilling equipment is stored at multiple locations across the State to better serve clients and for quick response to emergencies.

OFFICE CHIEF

Shira Rajendra
Phone: (916) 952-8329
E-mail: Shira_Rajendra@dot.ca.gov

BRANCH CHIEFS

North Liaison Materials/ Warehouse	David Thomas	(916) 227-5450	David.J.Thomas@dot.ca.gov
West & South 2 Liaison Equip/ Safety	Laurel Jensen	(916) 227-4407	Laurel.Jensen@dot.ca.gov
South 1 Liaison Contracts	Bogdan Komorniczak	(916) 227-5863	Bogdan.Komorniczak@dot.ca.gov
Scheduling	Mark Richards	(916) 227-5448	Mark.Richards@dot.ca.gov

SENIOR FOUNDATION DRILLERS

Equipment	Michael Santos	(916) 227-5446	Michael.Santos@dot.ca.gov
Purchasing	Carl Boling	(916) 227-5442	Carl.Boling@dot.ca.gov
Mud Disposal	David Orlandi	(916) 227-5431	David.Orlandi@dot.ca.gov
Scheduling	Wade Taylor	(916) 227-4420	Wade.Taylor@dot.ca.gov
Inventory	Robert Fletcher	(916) 227-5446	Robert.Fletcher@dot.ca.gov

 

 

Services Available

• Drilling methods including:
  • Wire line (94 mm)
  • Auger
  • Conventional open hole
  • Drive or push systems
• Boring depths to 1,000 ft.
• Boring diameters from 4 to 10 inches.
• Core diameters from 1.5 to 2.5 inches.
• Soil sample diameters from 1 to 3 ¾ inches.
• Sampling methods including:
  • Punchcore
  • Standard Penetration Test (SPT)
  • Shelby tubes
  • Lexan tubes
  • Brass tubes (2" or 2 ½")
• Instrument installations including:
  • Slope inclinometer casing
  • TDR cable
  • Piezometers
• Monument setting.
• Borehole backfill

Work Requests

Work requests submitted to the Office of Drilling Services must include a Drilling Request, Site Safety Plan, and Site Assessment Questionnaire. Examples of completed forms are available here:

• Drilling Request (Preliminary) Example
• Drilling Request (Final) Example
• Site Safety Plan Example
• Site Assessment Questionnaire

Submit work requests to the "Scheduling" Branch Chief listed above.