Local health professionals in Rouyn‑Noranda are urging the incoming Quebec administration to keep the current deadline for the Horne Smelter to meet its arsenic emissions target set for 2029. They argue that extending the timeline would jeopardize the intended reduction in airborne arsenic and could affect community health.
The target established for the smelter is a maximum concentration of 15 nanograms per cubic metre of arsenic in emissions by the year 2029. This figure reflects the level deemed acceptable by regulatory standards and is intended to limit exposure for residents living near the industrial facility.
The deadline was originally granted after the former Quebec government approved a deferral, allowing the Horne Smelter additional time to implement measures needed to reach the 15 ng/m³ threshold. The previous administration’s decision was framed as a temporary accommodation to enable the plant to adjust its processes.
Health experts contend that maintaining the 2029 deadline is essential to ensure the smelter follows the reduction plan originally outlined. They stress that adherence to the schedule is a key component of protecting public health, as prolonged higher arsenic levels have been linked to various health concerns.
The call for the new government to uphold the existing deadline comes as the province prepares for a transition in leadership. Stakeholders, including the Horne Smelter and local authorities, are expected to review the emission schedule during upcoming policy discussions, with the health community emphasizing the importance of meeting the established target without further delay.