About Pitcher Services

Widely recognized as a trusted California union driller, we are fueled by our passion to provide quality service.

Pitcher offers a wide range of services for geotechnical site investigation and instrumentation installation. Pitcher’s history goes back to 1933 and we pride ourselves as a leader and innovator in drilling, sampling, and subsurface investigation. Our goal is to provide clients in industry and government with the highest quality services.

Pitcher has earned an excellent reputation within our industry by building a team of highly experienced personnel and management who reflect our mission and embody our commitment to providing the highest quality services and offering innovative solutions to difficult projects.

We are proud of our relationship with Operating Engineers #3 and #12 and employ union personnel in both our field and maintenance operations. We are the preferred option for high profile Bay Area projects including the San Jose BART exploration, California High Speed Rail, Giants Stadium and Millennium Tower stabilization and repair as well as other complicated tunneling and instrumentation projects.


To provide our clients with service that embodies our values of Reliability – Flexibility – Expertise


We have collaborative, long-term partnerships with our clients

Many of our client relationships date back to the founding of our company. We’re proud of this fact. These long-term partnerships have been a collaborative effort built on trust and are a result of the high rate of client satisfaction with our overall performance. We work to earn our clients’ trust and satisfaction by consistently responding to their needs with sound technical advice and innovative solutions.

and more!


Delivering excellence through client-focused solutions


Delivering high quality services is a key focus of our business

Quality isn’t something we test for after the job is done. It’s a way of doing business, an integral part of our daily activities, something we instill in our personnel and something we build into our equipment and technologies. This ensures our clients are provided with the samples and data they need the first time; minimizing re-work, delays and the frustration that can come from a lack of planning.


Protecting our workforce, our clients and the general public from injuries and hazardous incidents

Because of this a “safety first” policy has been integrated into all areas of our operation and is put into practice by all Pitcher Services personnel on a daily basis. The emphasis we place on safety has enabled us to successfully manage the risks inherent in our industry, control costs and provide a secure, sensible, and productive work environment for our employees and our clients.


Add significant value to the professional services we offer

We are committed to providing cost effective solutions that consistently meet or exceed our clients’ project requirements. This commitment blended with the innovative thinking of our personnel and research backed equipment and technologies add significant value to the professional services we provide.


We maintain a valid C57 license as a contractor in the state of California.


Pitcher Services C57 license number

We are owned by Sealaska, an Alaska Native corporation, and have agreements with both the Operating Engineers union #3 in Northern California and #12 in Southern California.

We also carry extensive insurance coverage, which includes general liability, automobile, workers compensation, and contractor’s pollution insurance. Copies of our licenses and certificates of insurance are available upon request.

Say Hello to the
Pitcher Team



As CEO of commercial services, Boris leads Pitcher’s U.S. based operations. A structural and civil engineer by training, Boris is an accomplished leader, manager and problem solver with nearly 20 years of construction experience in Europe and the Americas. Boris speaks five languages and has made homes in Southern Europe, Mexico, the United States, Colombia and the United Kingdom. Immersion in so many cultures and locations has sharpened his awareness of how finite and fragile our planet is and fueled his passion for reversing the effects of climate change.

Email Boris: boris.caro@sealaska.com



Mr. Shewchuk has been in his current role as General Manager of Pitcher Services, LLC and Pitcher Drilling Co. since 2004. Before becoming General Manager, he served four years with the company. He is responsible for the daily management of the company, including but not limited to: field operations, yard and office activities, project management, proposals and scheduling. He is experienced in mud rotary, air rotary and hollow stem auger drilling and sampling methods, cone penetration testing (CPT), geotechnical instrumentation and geothermal heat loop installations. Mr. Shewchuk has directed both on-land and overwater geotechnical site investigation projects.

Email Terry: tshewchuk@pitcherservicesllc.com


Operations Manager

Mr. Porter has been in his current role as Operations Manager of Pitcher Services, LLC and Pitcher Drilling Co. since 2011.  He is responsible for day-to-day operations including dispatching of drill rigs, project management, site logistics, underground utility clearance (USA tickets), vendor/subcontractor coordination, well completion reports, Gold Shovel and ISNetworld.  He is experienced in mud rotary and hollow stem auger drilling and coring, various sampling methods, cone penetration testing (CPT), geotechnical instrumentation and geothermal heat loop installations.  He is also experienced in SPT energy calibration and Vane Shear Testing (VST).

Mr. Porter has assisted with the management of hundreds of geotechnical site investigation projects, instrument installations and destructions.  He is also proficient in the operation of drilling and testing equipment.

As Operations Manager for Pitcher, Mr. Porter is responsible for all aspects of day-to-day operations of the company, specializing in field and yard operations.

Email Brad: bporter@pitcherservicesllc.com


Technical Advisor

Dr. Peter K. Robertson brings more than 50 years of experience as an educator, researcher, consultant and practitioner specializing in the areas of in-situ testing and site investigation, earthquake design of geotechnical structures, and soil liquefaction. Peter is recognized as an expert both nationally and internationally in the areas of in-situ testing and soil liquefaction. He has been a consultant to various clients around the world for projects involving liquefaction evaluation for major structures, stability of on-shore and off-shore structures, landslides, stability of natural slopes and tailings dams, and use and interpretation of in-situ tests. He is the co-author of the primary reference book on Cone Penetration Testing (CPT). He has also authored or co-authored over 250 publications as well a popular CPT Guide that is freely available on several websites. Peter has also assisted in the development of several inexpensive CPT-based interpretation software programs and has presented a series of free webinars to enhance education and practice.

Peter continues to provide private consulting to a wide range of clients and currently resides in Southern California.

Email Peter: probertson@greggdrilling.com

We’re ready for you

With more than 90 years experience drilling in California and surrounding states, Pitcher can handle any size project from land based geotechnical investigations to near-shore marine projects and instrumentation installations.