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1 INTRODUCTION 1.1 Background

1.1 Background
Cyanide occurs as a groundwater contaminant at
various current and former industrial sites, including
electroplating facilities, aluminum production plants,
manufactured-gas plants (MGP), and gold mining
industries. The study site is located in British Co-
lumbia (Canada) and is primarily an aluminum
smelter, but also functions as an aluminum produc-
tion facility.
Spent pot lining (SPL) is a waste product of alu-
minum refining. It contains, in addition to carbon,
fluoride salts and cyanide. In British Columbia, SPL
is classified as a special waste by the provincial
Ministry of Water, Lands and Air Protection
(MWLAP), and is therefore subject to particular
handling, storage and transfer requirements. Dis-
posal of SPL is an industry wide problem.
Prior to the mid-1980s, SPL from the smelter was
deposited in a landfill on the smelter site. The land-


Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal


Collections: Engineering; Environmental Management and Restoration Technologies