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ARTICLE · 17 SEPTEMBER 2026

Proposed Amendment To The SEIA Regulation Submitted For Public Consultation

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Chile's Ministry of the Environment has published a draft amendment to the Environmental Impact Assessment System (SEIA) regulation, proposing significant changes to entry criteria and thresholds for mining and real estate projects. The proposal introduces higher thresholds for mining operations and exploration activities while establishing new exemptions for certain waste reprocessing projects and real estate developments with approved emissions offset programs.

ChileEnvironment
Julio Recordon
Julio Recordon
Manuel José Barros
Manuel José Barros
Mikaela Oberpaur
Mikaela Oberpaur

On July 31, 2026, Exempt Resolution No. 4,157 of the Ministry of the Environment was published in the Official Gazette, approving a draft amendment to the Regulation of the Environmental Impact Assessment System (“SEIA”) and commencing its public consultation process.

The proposal seeks to update certain SEIA entry criteria and thresholds applicable to mining development and real estate projects.

Main aspects

I. Mining development projects

The proposal increases the SEIA entry threshold for mining development projects to an ore extraction capacity exceeding 40,000 tonnes per month.

It also expands the scope of the exemption allowing certain mining waste reprocessing and recovery projects to be excluded from the SEIA when carried out at operations that already hold a favorable and currently valid Environmental Qualification Resolution (“RCA”).

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