18-Env-B1 Environmental Assessment and Management Systems · May 2017
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Reference texts: Mihelcic & Zimmerman, Environmental Engineering: Fundamentals, Sustainability, Design; Davis & Cornwell, Introduction to Environmental Engineering (6th ed.); ISO 14001:2015, Environmental Management Systems — Requirements with Guidance for Use; ISO 14040/14044, Life Cycle Assessment — Principles and Framework; Canadian Environmental Protection Act, 1999 (CEPA); Impact Assessment Act, 2019 (Canada); World Commission on Environment and Development, Our Common Future (the Brundtland Report), 1987.
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.
(i) Forestry example — integrated slash/residual biomass utilization design. A representative example is a harvest-area design that recovers logging residuals (slash, non-merchantable stems, sawmill offcuts) as feedstock for a co-located biomass energy or wood-pellet facility, instead of the conventional practice of piling and open-burning residuals at the cutblock.
| Dimension | How the residual-recovery design integrates it |
|---|---|
| Ecological | Eliminates slash-pile smoke and particulate emissions, reduces coarse woody debris removal to the level that still protects soil nutrient cycling and wildlife habitat structure, and displaces fossil-fuel generation with a renewable biomass source. |
| Economic | Converts a disposal cost (piling and burning) into a revenue stream (sold biomass feedstock), while creating year-round hauling and processing jobs that are not tied to the harvest season alone. |
| Social | Removes the seasonal open-burning smoke that drives air-quality complaints from nearby communities, and demonstrates visible resource-use efficiency that supports the forestry licensee's social licence to operate. |
The design is genuinely multidisciplinary because the same physical change — collecting rather than burning residuals — simultaneously satisfies an ecological constraint (air quality, retained soil structure), an economic objective (feedstock revenue) and a social objective (public acceptance), which is exactly the recycling-and-optimal-use logic the question is testing against the global deforestation/habitat-loss problem.
(ii) Three key EIA issues for the tailings pond expansion, one per dimension. 1. Ecological — geotechnical/hydrogeological stability and seepage risk of the expanded impoundment. Because a tailings dam failure or chronic seepage releases metals-laden process water directly to the surrounding boreal watershed, the EIA must assess the expanded embankment's stability under the enlarged storage volume and characterize seepage pathways to groundwater and any downstream fish-bearing waters, consistent with the geotechnical rigour required after well-publicized Canadian tailings-dam failures. 2. Economic — closure liability and financial assurance sized to the expanded footprint. The larger impoundment increases the long-term liability for reclamation, water treatment and dam maintenance after mine closure, so the EIA/approval package must include an updated closure cost estimate and a correspondingly larger financial security bond, ensuring the economic burden of the expansion does not fall on the province if the operator becomes insolvent. 3. Social — Indigenous and local community engagement on land and water use. An expansion in northern Quebec very likely overlaps traditional territory and subsistence/recreational water use, so the EIA must document meaningful consultation with affected Indigenous and local communities on the expanded footprint's effect on land access, traditional harvesting and downstream water quality, and how their concerns were incorporated into the final design.
