The Source Group Inc. provides a variety of services to key industries.

Contact Us

To meet our clients' needs, The Source Group maintains offices across California, as well as in Clarkston, Michigan and Coral Springs, Florida, conducting work on projects throughout the U.S.

General Company Information

Email: info@thesourcegroup.net

Pleasant Hill (San Francisco Bay Area) Corporate Office

3451-C Vincent Road
Pleasant Hill, California 94523

Contact: Andy Zdon, Principal Hydrogeologist
Ph. (925) 944-2856; Fax (925) 944-2859

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San Francisco Peninsula Office

751 Laurel Street, Suite 722
San Carlos, California 94070

Contact: James G. Ritchie, Principal Geologist
Ph. (650) 394-4774; Fax (650) 412-2408

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Thousand Oaks Office (Los Angeles Area)

299 West Hillcrest Drive, Suite 220
Thousand Oaks, California 91360

Contact: Mark Labrenz, Principal Hydrogeologist
Ph. (805) 373-9063; Fax (805) 373-9073

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Long Beach Office (Los Angeles Area)

1962 Freeman Avenue
Signal Hill, California 90755

Contact: Neil Irish, Vice President
Ph. (562) 597-1055; Fax (562) 597-1070

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Sacramento Office

944 McCourtney Road, Suite H
Grass Valley, CA 95949

Contact: Greg McIver, Senior Project Scientist
Ph. (530) 272-4200; Fax (530) 272-4211

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Florida Office

7401 Wiles Road, Suite 305
Coral Springs, FL 33067

Contact: Peter Fuller
Cell Phone (954) 629-6792
Ph. (954) 840-0422; Fax (954) 756-8078

Michigan Office

50 Robertson Court
Clarkston, MI 48346

Contact: Eileen Bullen, Principal Program Director
Ph. (248) 921-1665

Agricultural Services Offices

3213 Liberty Square Parkway
Turlock, CA 95382

Contact: Tom Prevost, Principal Engineer
Ph. (209) 669-1800; Fax (209) 669-1889