Page 82 - Martin Marietta - 2024 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Waste Management

While our business is not a large generator of solid or As noted above, we are generally a small quantity
hazardous waste like many manufacturing businesses, we generator of traditional solid and hazardous wastes. We
are committed to improving resource efficiency through currently track solid waste disposal and recycling rates at
the enterprise level for approximately 65% of our
reuse, recovery and/or recycling of waste materials in our
locations. In 2024 these locations generated approximately
businesses. We also dispose of waste using safe and
10,000 tons of solid waste, of which approximately 470
responsible methods.
tons were recycled. Hazardous wastes generally consist of
small quantities of used aerosols, paints, and similar
Our primary operations involve mining limestone and
common wastes. These wastes, along with any used oil are
granite; the resulting fines are non-hazardous. We attempt
handled by our environmental and operational teams in
to minimize the need to store and/or dispose of aggregates
the divisions and disposed of in accordance with the
waste products at our facilities by selling the fine material.
requirements of the law at specially designated facilities. In
We often sell fine material as a replacement for natural
the future, we will consider further consolidated tracking
sand where customer specifications allow. To the extent
of these materials and processes.
that we maintain settling basins for fine material on our
mine sites, these are generally constructed below grade in
mined out areas of our pits or in specially engineered
settling basins.

A below ground level settling pond

80 2024 SUSTAINABILITY REPORT