Page 57 - 2021 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Biodiversity and Land Use

We own or lease significant land holdings on which we As both sedimentation and water diversion could impact
operate our businesses. We are committed to minimizing the Pearl Shell Mussel, during construction of the
operational impacts on local ecosystems’ biodiversity. Woodworth facility a number of steps to prevent such
In addition to complying with applicable laws and impacts were taken including the use of substantial buffers
regulations, we integrate various protection measures between operations and stream banks; levees constructed
into the way we operate, as described below. Further, on a 3-1 slope; and the use of matting, silt fencing, and
Prebble Jumping Mouse
our environmental management practices consider seeding to prevent sedimentation from erosion. The facility
the relevant ecosystem throughout the lifecycle of an also installed a closed loop water recycling system to
operation, including reclamation. prevent any discharges of process water. In part due to
these efforts, during the last mussel survey conducted in
Habitat and Species Protection late 2019 by the Louisiana Department of Fish and Wildlife,

it was found the numbers of mussels has increased.
Throughout the duration of our operations at a particular
location, we take a variety of steps to mitigate impacts Additionally, many of our quarries benefit biodiversity by
on habitats and species and to restore disturbed creating and maintaining valuable habitats for many
ecosystems. Our environmental staff works in concert species of wildlife, including threatened or endangered
with our mine planners and operations teams to ensure species. This occurs both in the ordinary course of
sensitive areas and species are not impacted. We maintaining large rural sites and through set-asides and
follow the U.S. Fish and Wildlife Service guidelines and conservation easements we have granted. In addition, in
regulations for operations near endangered or threatened many of our sand and gravel operations, we create
species, and we obtain required permits and conduct wetland features that improve water quality long term and
necessary mitigation in connection with our activities in water-storage basins that help to supply local water needs.
or near waters of the United States.
Because we own and lease many thousands of acres of
An excellent example of this practice can be found at our land, we are also active managers of significant forest
Woodworth facility in Louisiana which borders Bayou Clear, resources. Management and replenishment of this resource
home to the endangered Louisiana Pearl Shell Mussel. This is top of mind for our operations. For instance, beginning in
mussel is restricted to only two river drainages in central 2015, our East Division implemented a timber management
Louisiana, and as a result had declined by over 80% during program. In the last 4 years alone the division has planted
the last few decades. more than 560,000 trees reclaiming many acres of forest.

Pearl Shell Mussels

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