Page 118 - Martin Marietta - 2024 Sustainability Report
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SASB Index
SASB Index
The following table shows Sustainability Accounting Standards Board (SASB) disclosure topics and metrics. The date of this
index is April 30, 2025.
Table 1. Sustainability Disclosures Topics & Metrics
Topic Accounting Metric Category Unit of Measure Code Report Section or Response
Greenhouse Gas Gross global Scope 1 Quantitative Metric tons EM-CM-100a.1 Scope 1 emissions: 2.9 million metric tonnes
Emissions emissions, percentage (t) CO2-e, across all business lines (including stationary
covered under emissions- Percentage (%) and mobile sources).
limiting regulations
Currently, none of our operations are
covered under emissions-limited
regulations.
See Greenhouse Gas Emissions in this
Sustainability Report.
Discussion of long- and Discussion & n/a EM-CM-110a.2 Scope 1 emissions are direct greenhouse
short-term strategy or plan Analysis gas (GHG) emissions that occur from
to manage Scope 1 sources that are controlled or owned by
emissions, emissions us.
reduction targets and an
analysis of performance In 2023, we established a new Net Zero
against those targets Scope 1 Ambition for 2050, in addition to
our existing Net Zero Scope 2 Target for
2050 – our Net Zero Ambition now covers
our Scope 1 and 2 emissions across all our
businesses.
We also have a Scope 1 GHG reduction
commitment for 2030 for our cement and
magnesia specialties business.
We have converted more than 90% of our
Type I/II cement customers in Texas to PLC
or Type 1L, which we estimate contributed
to the year over year reduction in Scope 1
GHG emissions in our heritage cement
business.
We completed our combined finish mill
and silo projects at our Midlothian Cement
Plant in 2024. Initial estimates are that this
equipment results in an estimated 4 kWh/
ton savings in power consumption, directly
reducing the Plant’s Scope 2 footprint.
See 2024 Sustainability Highlights and
Performance Milestones, Greenhouse Gas
Emissions and Our Roadmap to Achieve
our 2030 and 2050 GHG Reduction Goals
in this Sustainability Report.
Air Quality Air emissions of the Quantitative Metric tons (t) EM-CM-120a.1 We maintain compliance with air quality
following pollutants: permits but are not required to and do not
(1) NOx (excluding N2O, track air emissions beyond GHG emissions
(2) Sox, (3) particulate at an enterprise level.
matter (PM10), (4) dioxins/
furans, (5) volatile organic See Greenhouse Gas Emissions in this
compounds (VOCs), (6) Sustainability Report.
polycyclic aromatic
hydrocarbons (PAHs), and
(7) heavy metals
116 2024 SUSTAINABILITY REPORT
