Walt K.

United States


Walter Kolbe is a Partner at Geothermic Solution, LLC and CEO at Plastoline, LLC. Walt has worked in various executive and managerial positions for the past 30 years, and he brings the benefit of this experience to Geothermic Solution and Plastoline. He served as CEO for four start-up cleantech companies, one of which later became public. He was awarded a Master's degree in Environmental Management from the University of San Francisco. Walt’s experience spans both public and private enterprises: he served as Deputy Manager for the City and County of San Francisco's Bureau of Water Pollution Control, where he was responsible for the operations and maintenance of $1.3 billion in infrastructure. During his tenure at the Bureau, Walt was awarded the Executive Director of Clean Water Enterprise Award in recognition for outstanding performance and managerial excellence. He also served as Regional Manager for Professional Services Group (Veolia Environment subsidiary), where he managed a number of the largest privatized wastewater facilities in the United States. Walt has been consistently recognized and awarded for his managerial capabilities. As General Manager of Biosystems Management International (Recology subsidiary), Walt directed all aspects of the largest biosolids firm in the Western U.S. with major contracts with the cities of Portland, San Francisco, Las Vegas and Reno. A number of these projects were unique in terms of complexity and scope. In addition, Walt was Founder and CEO of Environmental Protection Company, which provided bioremediation services to major oil companies such as Amoco, Unocal, and Conoco. The services of Walt’s firm were featured in two leading industry publications; the Oil and Gas Journal and Civil Engineering. The firm was also cited jointly with Amoco Oil for the best environmental project in its region.


  • climate change
  • services
  • public
  • development aid
  • entrepreneurism
  • united states
  • Sectors
  • Funders
  • Countries
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