Correspondence, memoranda, reports, budget materials, and notes related to administration of the Seattle Engineering Department. The records document SED projects and activities and its relationship with other City agencies. These records cover the period after SED stopped use of a central filing system.

Files relating to the work of the Engineering Department's Solid Waste Division.

Correspondence, working papers, reports, environmental impact statements, studies, testimony, conference presentations, and recommendations relating to research on converting solid waste to methanol or ammonia. Included is material concerning siting of a conversion plant. Correspondence includes input from government agencies and officials, community organizations, and the scientific community.