ISO 21795-2:2021 鉱山の閉鎖と埋め立ての計画—パート2：ガイダンス | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 82, Mining, Subcommittee SC 7, Mine closure and reclamation management.

A list of all parts in the ISO 21785 series can be found on the ISO website.

Introduction

This document provides guidance for mine closure and reclamation planning applicable to both new and operating mines. The overarching objective is to promote consistency and quality in planning for mine closure and reclamation internationally. ISO 21795-1 provides requirements for the same material.

The intended audience are those with responsibility for, or an interest in, planning for mine closure and reclamation. This includes mine planners and designers, mine operators, regulators, environmental assessors, communities, indigenous peoples, and financial stakeholders, amongst others.

Mine planning, design and operations must be fully integrated with the closure and reclamation process. Early, continual and comprehensive mine closure and reclamation planning is essential for all new and operating mines because it:

• leads to the highest degree of environmental and social success, usually at a lower cost than if mine closure and reclamation planning is not done from the beginning of the mining project;
• reduces risks and liabilities throughout the mine’s operational life and on closure;
• allows for stakeholder involvement throughout, so that relevant knowledge and understanding are brought into the planning process;
• allows for devoting more attention to sustainable development activities identifying socio-economic opportunities for the various closure phases;
• helps build trust with governments, stakeholders and international communities;
• provides additional planning time to understand the complexity of the biophysical characteristics and socio-economic context of each mine site;
• provides for continual improvement and updating of closure and reclamation plans;
• allows companies to better integrate closure and reclamation activities with operations;
• provides time to identify, research and develop new technologies for mine closure strategies and mine closure treatments that increase robustness and resilience of mine closure and reclamation; and
• allows companies to better provision for and schedule closure and reclamation funding.

There are many leading practices and guidance documents related to mine closure and reclamation planning available in various jurisdictions and used by many mining companies and stakeholders. This document captures the intent of such guidance documents so that it can be applied globally.

1 Scope

This document provides guidance related to the necessary mine closure and reclamation planning activities for new and operating mines. Recommendations are provided on:

• closure and reclamation of a mine site;
• land reclamation and water management;
• stakeholder engagement;
• decision and analysis tools.

The following aspects of closure and reclamation are not addressed in this document:

• infrastructure such as rail lines, ports, off-site ore loaders, power stations, etc. that are associated with the mine operation, but which are not located at the mine site;
• detailed survey, testing or monitoring methods, detailed engineering procedures, detailed product requirements, or detailed construction and operational procedures; occupational health and safety management related to closure and reclamation, construction and exploration activities;
• relinquishment of a closed and reclaimed mine site, or portions thereof, to a party (governmental or private entity) not related to the mine operator;
• specific requirements for dealing with the radiological aspects of mine closure and reclamation, such as those that occur at uranium mining and processing facilities and other mines at which naturally occurring radioactive materials are present; however, the other aspects associated with closure and reclamation of these mines are included in this document; and
• closure and reclamation of abandoned mines.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 20305 apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

Bibliography