Applied Process Technology Appoints Douglas A. Liddie as COO.

PLEASANT HILL, Calif. -- Applied Process Technology, Inc. ("Applied") has appointed Douglas A. Liddie as its Chief Operating Officer effective May 1, 2004.

Mr. Liddie holds a BS in Environmental Engineering from Cal Poly San Luis Obispo and an MBA from Santa Clara University. Before joining Applied, Mr. Liddie founded Environmental Navigator, Inc., an environmental management consulting firm specializing in the design and deployment of environmental management systems. He also served as President of The Gauntlett Group, LLC, an international environmental management and cost-accounting consulting firm. Other positions previously held by Mr. Liddie include Vice President of EMCOM, a publicly-held environmental engineering company headquartered in Silicon Valley, Chief Financial Officer of EMCON Associates, Inc., and a member of the Board of Directors of Columbia Analytical Services, Inc.

Terry Applebury, President and Chief Executive Officer of Applied Process Technology commented, "Doug brings to Applied more than 20 years experience as an entrepreneurial business leader and financial manager within the environmental services industry. He will be responsible for guiding our sales and marketing initiatives as well as managing our finance and administrative operations. He will be a tremendous asset to the company, and we are very pleased to have him on board."

Mr. Liddie stated, "Applied has all the right ingredients for near term success: an excellent product, field-proven technology, exciting new products in the pipeline, and committed investors. We're well positioned for growth in our target markets."

Applied Process Technology, Inc. (www.aptwater.com) provides technically superior pump-and-treat and in-situ water treatment solutions and services to the drinking water, environmental remediation and industrial process water markets. Applied specializes in treatment technologies that do not generate by-products or waste streams. Its first two product lines, HiPOx and PulseOx, are based on advanced oxidation and chemical oxidation processes that destroy a wide variety of contaminants including 1,4-dioxane, MTBE, and TBA. In addition, Applied and its alliance partners offer other technologies that treat a variety of contaminants including perchlorate. New advanced products are under development.