Page 60 - 2023 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

In addition to products like our scrubber stone, in 2023 we Jason Lynch, Regional VP/GM — Southern Texas Aggregates
continued to operate in the recycled aggregate market Region, oversees a network of recycling yards around
with sites in Texas, Minnesota and California. In 2023, Houston, Texas. In 2023, these 10 operations recycled more
across our network of operations, our operations than 1.2 million tons of concrete from a 2,900 square mile
processed 2.5 million tons of concrete generated from area around metropolitan Houston. Lynch sees benefits on
various construction/demolition projects (e.g. bridge/ many levels. “The production of locally sourced materials
building demolition, highway projects, airport supplements the supply of aggregates in this market with
reconstruction, and port projects). During this same period, few local natural sources. The business is a little different
our operations sold over 2.1 million tons of this material. than a quarry because we are working with other
This material is recycled and converted to various recycled companies and the public to acquire the raw materials that
products such as crushed base, ballast and rip rap. will ultimately be recycled for their own use on projects in
the future. There is also a substantial amount of steel that is
As discussed further below in the “Recarbonation” section, salvaged from the reinforcement within the concrete. These
recycled concrete can play a part in reducing the GHG operations also generated approximately 18,000 tons of
footprint of cement through the process of recarbonation. steel that can go back into use.”
Moreover, by recycling concrete versus mining virgin
aggregate, a certain portion of the GHG emissions that In our California operations, which we acquired in October
would otherwise be released are eliminated. Finally, the 2021, we also operate a recycling business which
EPA estimates that 600 million tons of construction and supplements our aggregates quarries. In 2023, our teams
demolition debris was generated in the United States in operated recycling facilities spread across the state which
2018. That volume is more than two times the amount of collectively processed more than 700,000 tons of concrete
municipal solid waste generated in the country each year. for sale as recycled aggregates. In addition, steel was
Landfills are finding it hard to meet the growing demand removed and recycled from this material. In such densely
for space so every pound of material that can be recycled is populated areas, the permitting of new aggregates
a net gain. resources is difficult, and sources are further away from the
city centers. As a result, recycled material is playing a bigger
role than ever before and we produce this material in many
of our other locations.

Our Specification Aggregate Plant,
Golden, CO
.

58 2023 SUSTAINABILITY REPORT