Page 58 - Martin Marietta - 2024 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

more than 7 million kWh in this its first partial year of operation. We also continue to explore solar and wind options for at
our other facilities as well. For example, at our St. Cloud and Yellow Medicine quarries in Minnesota, a substantial portion of
their power (more than 1.5 million kWh in 2024) is provided from a local Solar Garden under a long term subscription
agreement. Similarly, as described in more detail elsewhere in this report, at our Hatton and Jones Mill, Arkansas quarries,
we have installed solar power panels that power the offices, labs and training rooms during daylight hours. The Arkansas
installations alone avoided almost 33 metric tonnes of Scope 2 GHG emissions in 2024. Lastly, we continue to undertake
efficiency projects which replace older equipment with newer, more energy efficient equipment such as at our Minnesota
asphalt plants and our finish mill upgrade at our Midlothian, Texas Cement Plant.

The emissions offsets from these projects are not included in our Scope 2 emissions calculation for 2024. However, as we
work to move away from reliance on RECs, we intend to include these offsets in future year calculations.

Minnesota Solar Garden

Scope 3 Emissions

Scope 3 emissions are not produced by the reporting organization and are not the result of activities from assets owned
or controlled by the reporting organization, but are emissions that result from its value chain. The Scope 3 emissions for
one organization are the Scope 1 and 2 emissions of another organization. Scope 3 emissions are also referred to as value
chain emissions.

At this time, the Company is continuing to gather data and develop our Scope 3 inventory. We are also evaluating the
disclosure of Scope 3 emissions in light of state and federal climate disclosure rules. We expect a substantial portion of
our Scope 3 emissions will be from the transportation of our products. Transportation commonly occurs by truck with
attendant GHG emissions related to diesel and other fuels. However, we are also the largest rail shipper of aggregates in
the U.S., which is more efficient and less GHG-intensive for longer shipments.

56 2024 SUSTAINABILITY REPORT