We have the experience

Founded in 1933, Pitcher Services has been providing site investigation services within California for more than 90 years. In this time Pitcher’s clients have grown to include government agencies, industrial owners, engineering consulting firms and construction firms.

Pitcher is proud of its long history and is focused on being the reliable, flexible and expert service provider that our clients have come to trust. From difficult and high profile projects, to geothermal installations and small construction sites, Pitcher is a valuable resource to your project team.

Enjoy some of our old photos from Pitcher’s long history of geotechnical drilling here in California. Everything from golf courses to the Salton Sea and everything in between!

Project Summaries

High speed rail developments in California

In support of the California High Speed Rail project in the Central Valley, Pitcher Services has worked with Jacobs from 2018-2023 to support the geotechnical investigation for this important green infrastructure project. Pitcher Services has completed over 100 borings for the geotechnical investigation as well as monitoring well installations for groundwater information to guide liquefaction […]

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Building beautiful open spaces in the mid-peninsula

Midpeninsula Regional Open Space has purchased or received gifted unused properties to create hiking and open space areas for habitat restoration and low intensity recreation. Many of these properties have old wells requiring destruction and abandonment. Pitcher Services completed a challenging well destruction project for Midpeninsula in Loma Prieta in 2022 using their Failing 1500 […]

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High accuracy drilling into tunnels beneath the bay

In 2010 the San Francisco Public Utilities Commission awarded the contract to Michels for a new tunnel beneath the San Francisco Bay. This tunnel would be part of the Hetch Hetchy Water Improvement Program to upgrade the system’s aging pipelines. Due to difficulties with the tunnel boring, Pitcher Services was hired by Michels in 2012 […]

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Atmospheric river causes emergency repairs on HWY1

In January 2023 California experienced a so-called atmospheric river causing severe rain and snow. The rainfall resulted in five slides in the Santa Cruz Mountains blocking the highway. Working for Caltrans and Granite Construction, Gregg completed (9) solid flight auger and mud rotary borings ranging from 50-63ft in depth. The solid flight auger was used […]

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City slickers: SF drilling in the rain

In March 2023, Pitcher Services completed four solid-flight auger and mud rotary combination borings ranging in depth from 30-175ft for this project. Initially, Pitcher used the solid-flight auger to drill until groundwater was encountered and then set casing and switched to mud rotary drilling to the final depth. Sampling was every 5ft using drive samplers […]

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We’ve come a long way in 90-years!

If something isn’t listed here, it doesn’t always mean we don’t know how to help you. Visit our Services page to learn more about the services we have to offer. We love to tackle a difficult project or site – just let us know how we can help!