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Assurance notice

The Board of Directors and Management
Tata Chemicals Limited
Mumbai, India

Ernst & Young LLP (EY) was engaged by Tata Chemicals Limited (the 'Company') to provide independent assurance on its Integrated
Report 2017-18 (the ‘Report’) covering salient features of business as well as sustainability, including performance during the period 1st
April 2017 to 31st March 2018.

The development of the Report based on the <IR> Integrated Reporting Framework by International Integrated Reporting Council
(IIRC), its content and presentation is the sole responsibility of the management of the Company. EY’s responsibility, as agreed with the
management of the Company, is to provide independent assurance on the report content as described in the scope of assurance below.
Our responsibility in performing our assurance activities is to the management of the Company only and in accordance with the terms
of reference agreed with the Company. We do not therefore accept or assume any responsibility for any other purpose or to any other
person or organization. Any dependence that any such third party may place on the Report is entirely at its own risk. The assurance
statement should not be taken as a basis for interpreting the Company’s overall performance, except for the aspects mentioned in the
scope below.

Scope of assurance
The scope of assurance covers the following aspects of the Report:
• Data and information related to the Company’s environmental and social performance for the period 1st April 2017 to 31st March 2018;
• The Company’s internal protocols, processes and controls related to the collection and collation of specified environmental and social
performance data;
• Verification of sample data and related information through consultations at the Company’s Head Office in Mumbai, desktop review at
Innovation Centre (Pune) and physical visits to the following manufacturing locations:
o Mithapur (Gujarat)
o Sriperumbudur (Tamil Nadu)
o Green River, Wyoming, USA (Tata Chemicals Soda Ash Partners)
o Lake Magadi, Kenya (Tata Chemicals Magadi)
o Tata Chemicals Europe Limited, Northwich & British Salt Limited, Middlewich, United Kingdom
• The environmental and social performance data that was subject to above assurance is as follows:
o Environmental Performance:
• Raw material consumption, material recycled and reclaimed, energy consumption, energy savings, water withdrawal, water recycled
and reused, wastewater discharge, greenhouse gas emissions, air emissions (SOX, NOX and particulate matter) and waste disposed;
o Social Performance:
• Total workforce, new hires and turnover, number of fatalities and reportable injuries, number of man-days lost, average employee
training hours, employee training hours on human rights, total number of incidents of discrimination, and local community
engagement and development programs.
Limitations of our review
The assurance scope excludes:
• Operations of the Company other than those mentioned in the ‘Scope of Assurance’;
• Aspects of the Report and data/information other than those mentioned above;
• Data and information outside the reporting period i.e. 1st April 2017 to 31st March 2018;
• The Company’s statements that describe expression of opinion, belief, aspiration, expectation, aim or future intention provided by the
Company;
• Review of the Company’s compliance with regulations, acts, guidelines with respect to various regulatory agencies and other legal
matters.
• Data and information on economic and financial performance of the Company.

54 Annual Report 2017-18