18-Env-B5 Industrial & Hazardous Waste Management · May 2015
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Reference texts: Nemerow & Dasgupta, Industrial and Hazardous Waste Treatment, 2nd ed.; Metcalf & Eddy, Wastewater Engineering: Treatment and Resource Recovery, 5th ed.; Davis & Cornwell, Introduction to Environmental Engineering, 6th ed.; LaGrega, Buckingham & Evans, Hazardous Waste Management, 2nd ed.; CCME, Guidelines for the Management of Biomedical Waste in Canada (1992); Canadian Environmental Protection Act (CEPA), 1999; Basel Convention on the Control of Transboundary Movements of Hazardous Wastes (1989); provincial hazardous waste regulations (e.g. BC's Environmental Management Act and Hazardous Waste Regulation).
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) Early detection of leachate migration beyond the engineered containment (liner) system, before it reaches groundwater. (2) Verification of liner and cap integrity over the facility's operating and post-closure life. (3) Confirmation of compliance with the regulatory groundwater-quality and emissions limits attached to the facility's operating permit. (4) Tracking of landfill gas generation and migration, both for explosive-hazard control and for confirming the gas-collection system is performing as designed. (5) Early warning to protect public health and the environment, so that a developing problem (e.g., an early sign of liner failure) can be corrected before it becomes a significant off-site release. (6) Generation of long-term performance data to inform post-closure care decisions and demonstrate when (or whether) institutional controls can eventually be relaxed.
