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Roadwaste Management: Field Trials: Final Report
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  • Alternative Title:
    Roadwaste management : field trials.
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  • Abstract:
    The Oregon Department of Transportation is concluding a study on roadwaste management. The first phase of the study provided a thorough regulatory analysis and synthesis of known fact compiled in Roadwaste: Issues and Options. The main emphasis of the second phase was hands-on study of the most efficient and environmentally sound management options for street sweepings and stormwater system residuals. This report documents the second phase investigations, which include field trials conducted by ODOT crews and those conducted in cooperation with the City of Portland. Dewatering, treatment methods (from composting to thermal treatment), and reuse were investigated. Field observations from crews, operators, managers, and the ODOT Principal Investigator provide an on-site account showing why some options worked and under what circumstances some methods performed poorly. Laboratory analysis was used to further characterize roadwaste materials. The data was also used to analyze the effectiveness of selected management options. Some options for trials were not followed-up, and some were pursued only on the bench scale. These preliminary findings and discussion of other promising technologies are also presented. Central to efficient management is the question of shared facilities, which is discussed in its own chapter. The findings of the second phase of the roadwaste management study were used to support the recommendations for a set of effective management options presented in the Phase 3 report, Roadwaste Management: A Tool for Developing District Plans. Phase 4 is planned to assist ODOT Maintenance Districts and local jurisdictions with planning and implementation. ODOT expects the documented observations to help maintenance personnel select workable methods to best address roadwaste management issues in their Districts, and to help field crews more efficiently implement the field methods, understanding that not all situations encountered in the field can be anticipated in a study.
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