Document Type

Closed Project

Publication Date

Summer 2014


Timothy Anderson

Course Title

Engineering and Technology Management Synthesis

Course Number

ETM 590


Waste disposal -- Technological innovations -- Evaluation, Waste disposal -- Oregon -- Tillamook County, Waste disposal -- Management


Tillamook County is a rural county straddling the Northern Oregon Coast Range with the majority of the local economy based around agriculture, timber, tourism, and fishing. As part of Tillamook County’s mission statement, they strive“to enhance the quality of life for its citizens by promoting and preserving public health and safety, maintaining a stable economy, encouraging wise use of resources, and providing services in the most efficient and cost-effective manner possible.” To that end, Tillamook County, Tillamook County Economic Development Council (TCEDC), Portland State University, Oregon State University, and Tetra Tech have undergone an evaluation and technology assessment process to determine a sustainable, economically-viable, and socially-acceptable pilot installation capable of dealing with the large amount of biodegradable waste produced by the timber and dairy industries. This survey provides a technology assessment and recommendations regarding three potential technologies: thermophilic composting, gasification/pyrolysis, and direct incineration. Each of these technologies have strengths and weaknesses in dealing with the three waste streams (manure, bovine carcasses, and timber slash), and this analysis works as a decision-making guide for choosing the proper technology or array of technologies to dispose of Tillamook County’s biodegradable waste.


This project is only available to students, staff, and faculty of Portland State University

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