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.
(1) Climate change and greenhouse-gas accounting — growing pressure to reduce landfill methane and haul-related emissions creates both a compliance challenge and an opportunity for landfill-gas-to-energy and organics-diversion projects. (2) Diminishing landfill capacity and siting difficulty — fewer communities will accept a new landfill, pushing toward waste-to-energy, regional facilities and more aggressive diversion. (3) Growing and increasingly complex waste streams (electronic waste, plastics, single-use packaging) — a challenge for safe management but an opportunity for extended producer responsibility (EPR) programs and material recovery innovation. (4) The shift toward a circular economy — growing policy and market demand to treat waste as a resource (recovered materials, compost, recovered energy) rather than a disposal liability, opening new revenue streams and reducing virgin-material demand.
