Page 65 - 2022 Sustainability Report

ENVIRONMENTAL STEWARDSHIP

Water Management

We use water for production, maintenance activities, permits under the National Pollutant Discharge Elimination
environmental controls and reclamation. We recognize that System (NPDES) that contain site-specific limits designed to
water availability is critical to the future of our maintain the health of the receiving water body and the
communities and our operations. We also recognize that aquatic species that call it home. We use treatment
our diversion and discharge of water into the environment systems designed to ensure that permit compliance is
impacts our communities and the ecosystem. We are maintained and conduct regular monitoring and reporting
committed to responsible and efficient water management to ensure compliance.
and continuously seek opportunities to use renewable and
In addition, stormwater discharges associated with
recycled sources. As with our GHG emissions strategy, we
industrial activity are regulated pursuant to the CWA.
invest in new processes and technologies following
These regulations require that the site operate under either
appropriate testing.
a general permit applicable to all similar facilities or a site-
In 1972, the U.S. Congress enacted the Federal Water specific permit depending upon many factors.
Pollution Control Act, now known as the Clean Water Act
The storm-water permitting system is designed to minimize
(CWA). This law, as amended, established the basic
and reduce pollution in the runoff from industrial facilities.
framework for regulating water pollution in the United
Sites must maintain a Storm Water Pollution Prevention
States. Compliance with water quality requirements under
Plan, implement Best Management Practices, and
the CWA is a critical aspect of Martin Marietta’s
undertake certain sampling and reporting.
environmental stewardship.
By the end of 2022, we operated approximately 350 aggregate
While we make significant efforts to reuse and recycle
facilities across the United States and recorded a total of only
water in our processes, we do have discharges at or from a
six CWA-related violations, all of which were minor.
number of our locations. In those cases, we have obtained

An expansive lake created at a reclaimed
site in Georgetown, South Carolina

MARTIN MARIETTA 63