Measuring the Environmental Impact of Low Carbon Asphalt

A Guide to Assessing the Sustainability of Asphalt Mixtures

Sustainable winding road

In our dedication to sustainability, it is crucial to have a clear and measurable understanding of the environmental footprint of our products. When it comes to low carbon asphalt, measuring its impact is a methodical process that ensures our asphalt mixtures contribute positively to our environmental goals. Here’s how we measure the low carbon footprint of our asphalt mixtures.

The Standard of Measurement: The Declared Unit

Our measurement is standardized to one metric tonne (equivalent to approximately 1 short ton) of an asphalt mixture, classified under UNSPSC Code 30111509: Asphalt Based Concrete. This mixture is a composite material produced in plants, consisting of aggregates, asphalt binder, and other materials.

Cradle-to-Gate: Scope of the Environmental Product Declaration (EPD)

Our analysis is confined to a cradle-to-gate Environmental Product Declaration (EPD). This EPD encompasses:

  • Materials (A1): Includes the extraction and manufacturing of raw materials like aggregates and asphalt binder, proportionate to their use in the mix design.
  • Transport (A2): Accounts for the transport of raw materials to the asphalt plant, tailored to the actual distances and transportation modes for the mix ingredients.
  • Production (A3): Encompasses the operations within the asphalt production plant, including the energy consumed to generate electricity and heat for the production process.

Understanding the Life Cycle Inventory

The life cycle inventory is an essential component of our EPD. It documents all the inputs and outputs associated with the production stages Al to A3, providing a comprehensive profile of the environmental impacts from raw material acquisition to the finished asphalt mixture ready to leave the plant.

Beyond the Gate: What’s Not Included

It’s important to note that our current EPD does not cover the construction (placement
and compaction), use, maintenance, rehabilitation, or end-of-life stages of the asphalt
life cycle (modules A4-A5, B1-B7, and C1-C4). Our focus is on the up-front environmental impact, paving the way for sustainable choices from the very beginning.



As a leader with both creative and analytical skills, Jason oversees the planning, development, and execution of Surface Tech’s marketing and advertising strategies. He has been responsible of late for clarifying the company’s value proposition through a series of new branding executions resulting in a revamped website and other improvements in the company’s strategic marketing initiatives.

Jason brings more than 25 years of industrial design, branding, and manufacturing experience to his new role as CMO. His work has appeared in leading design publications, and he has received numerous international design awards. His portfolio includes more than 40 design and utility patents in the fields of consumer electronics, software, packaging, medical devices, and software. Speed to market, with a critical eye for detail and simplicity, is the driving force behind his multidisciplinary design process.

Jason holds a BS in Industrial Design from The Ohio State University. His previous work experience includes Nike, Proctor & Gamble, Skylab Architecture, and founder of New Studio. 

Stacie Steel

U.S. Northwest

Stacie Steel, PE, offers a depth of experience in asphalt and concrete pavements. She has provided infrastructure-related civil engineering and project management consulting services to both public and private sector clients for the past 20 years.

Stacie’s technical expertise centers around all things pavements: structural design, materials design and specifications, sustainability, life-cycle cost analyses, pavement management, preservation and rehabilitation, QA/QC, materials testing, and forensic evaluations.

Throughout her career, she has worked on paving projects for many national commercial retailers, municipalities, and airports. Stacie has proven leadership and organizational capabilities, as evidenced by earning the President’s Choice Award from the WTS Colorado Chapter early in her career. She currently serves on the WTS Puget Sound Chapter’s TransportationYOU Committee, and is dedicated to ensuring access to local outdoor recreation opportunities serving on the Board of Directors for the Lonesome Lake Preservation Group.