Page 28 - 2019 Sustainability Report

Nevertheless, we have seen a considerable reduction
Woodville Lime Plant pollution
control devices under construction.
28 / MARTIN MARIETTA / SUSTAINABILITY REPORT / 2019
in GHG emissions intensity in our Magnesia Specialties
business in recent years. This is primarily driven through
our investments in modernizing the Woodville plant, most
notably construction of a new, more efficient kiln that
was completed in 2012. In 2018, under a consent decree
negotiated with USEPA, the company committed to spend
an additional +/- $30 million at this site to add preheaters
and other state-of-the-art control technology to two other
large kilns. While primarily designed to control NOx and
SO emissions, we believe this project may also result in
2
GHG emission reductions. This project is well under way.
We are currently evaluating systems to achieve additional
reductions through implementation of heat recovery systems,
improvements in combustion efficiency through new product
mixes, process changes and upgraded equipment, and
minimizing the generation of fines and other byproducts.
“Notably, our products manufactured at this
plant help control emissions and result in
other environmental benefits.”
We also manufacture magnesia-based products at
our Manistee, Michigan, facility, which are a relatively
insignificant source of direct GHG emissions. Notably, our
products manufactured at this plant help control emissions
and result in other environmental benefits.
Some of those applications for our products include:
Purification of drinking water as well as industrial
and municipal wastewater
Optimization of transformer electricity transmission
Replacement of hazardous chemicals with our
non-hazardous magnesium oxide and hydroxide
products
Sulfur oxide pollution reduction
Nuclear waste neutralization
Improvements in gas turbine electric generation
efficiency
Reduction of chemical usage in pulp bleaching and
improvements in paper grade pulp yield,reducing
wood demand, fertilizers to maximize crop yield
and to replenish soil nutrients
Reduction of sewer system pollution, such as
hydrogen sulfide gas