18-Env-A6 Solid Waste Engineering and Management · December 2014
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Reference texts: Tchobanoglous, Theisen & Vigil, Integrated Solid Waste Management: Engineering Principles and Management Issues; Vesilind, Worrell & Reinhart, Solid Waste Engineering; Davis & Cornwell, Introduction to Environmental Engineering (6th ed.); CCME, Guidance Document on Landfill Gas Management; Canadian Environmental Protection Act, 1999.
This paper prints marks IN FRONT of the question number on every line (e.g. "5 1. What are the elements…", "4 16. All 29 questions are answered in full.
Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.
| Property | Why it matters |
|---|---|
| Density (as-discarded and compacted) | sizes collection vehicle payload and landfill airspace consumption |
| Moisture content | governs weight, combustion feasibility and leachate generation |
| Particle size and size distribution | affects screening, size-reduction equipment selection and compaction |
| Field capacity | the maximum moisture the waste can retain before leachate forms — sizes leachate management |
| Permeability (of compacted waste) | governs leachate and landfill-gas migration within the fill |
