Page 34 - 2020 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Greenhouse Gas Emissions

Overview

This year we are reporting for the first time on our Scope 2 CO e emissions for all business lines: aggregates, cement,
2
ready mixed concrete, asphalt and paving services and magnesia specialties. This is in addition to our existing
e emissions across our business lines, as well as our Scope 1 CO e emissions reductions
disclosures on Scope 1 CO 2 2
commitments for our cement and magnesia specialties businesses.

Martin Marietta is, overwhelmingly, an aggregates-led Company (crushed stone, sand and gravel) in terms of our
revenue and operational footprint. In fact, the vast majority of our facilities are associated with our aggregates
business, including more than 300 quarries, mines and distribution yards. Construction aggregates businesses are not
large emitters of GHGs, with the predominant source being diesel fuel used in trucks and other mobile equipment. We
also have two targeted downstream businesses: ready mixed concrete and asphalt and paving services. Finally, we
operate a small, but strategic, cement business and the magnesia specialties business that, collectively, account for 87
percent of our Scope 1 GHG emissions.

2020 GHG for All Business Lines

We previously reported our Scope 1 emissions for all business lines in our most recent Sustainability Report. In this report,
we are reporting our Scope 2 emissions for all our business lines for the first time.

Scope 1 4.505 million metric tonnes CO e Scope 2 0.671 million metric tonnes CO e
2
2

Select Examples of Number of Cement Plants Worldwide

270

142
94
56
54 43 31
2
Lafarge Holcim Heidelberg China Nat Mat CEMEX CRH Votoranim Buzzi Cement Martin Marietta
Sources: 2019 annual reports, sustainability reports and corporate websites

Not surprisingly, our total GHG footprint in absolute terms — from our cement operations as well as all our other business
lines — is a small fraction of the footprint of many domestic and international cement companies. Our 2020 Scope 1
CO e emissions were 4.505 million metric tonnes of CO e across all business lines (including stationary and mobile
2
2
sources), of which 2.6 million metric tonnes were attributable to emissions from our cement business.

32 2020 SUSTAINABILITY REPORT