Tom Holdrege, PE, CEG, has completed over 1,000 environmental, hazardous materials, solid waste, geotechnical, and geologic site characterizations in California since 1986.
Chuck Kull, PE, GE, has designed and overseen construction projects throughout California and Nevada since 1984.
Jason W. Muir, PE, GE, is a principal of Holdrege & Kull and manager of the Environmental Division of the Nevada City office.
John Atkinson is a principal with Holdrege & Kull. He manages the Lab and Field Operations for the firm and is the technical leader for the special inspection and materials testing staff. John has been with H&K since its inception in 1993.
Jake Hudson, PE, CEG, CPESC, has been a principal of Holdrege & Kull and manager of the Truckee office for the last 15 years.
Don Olsen, PE, PG, CEG, CHG, is a principal of Holdrege & Kull and General Manager of the Chico and Yuba City offices.
Shane Cummings, PG, CEG, CHG, is Operations Manager of the Chico office. He has been in the industry for 18 years, 13 of which have been with H&K.