Charles Duprey

Charles Duprey

Charles Duprey

Speaker | Naturcycle

Plainville, NY |

USCC Member

Charles Duprey is President on Naturcycle a firm focused on the sales and marketing of compost and engineered soils throughout the Northeast. Working with a variety of private and public composters, they provide material for projects and retail use throughout our region.

He serves as the Vice Chair of the Market Development Committee of the US Composting Council. Mr. Duprey consults on beneficial reuse of organics, engineered soil and stormwater projects around the country. Along with working to develop and supply some of the largest green roof and engineered soil projects in the Northeast. Mr. Duprey has a BS and BA from Syracuse University and resides in Upstate New York.

Session Name: Growing Your Market: DOTs, Urban Applications

Session Time: Thursday, January 30, 8:30 to 10:00 AM

Presentation Title: Furthering Compost Use by Departments of Transportation

Presentation Description: Each State Department of Transportation (DOT) publishes construction specifications that outline how to carry out work from closing traffic lanes to applying plant seed after highway construction has finished. Our research question was: How is compost use prescribed by state DOTs? Each state’s DOT specification document was assessed for if/how compost use is prescribed. For analysis, we relied on recommendations from the U.S. Composting Council (USCC) and the American Association of State Highway and Transportation Officials (AASHTO), and findings from previously published journal articles.

Most states had some mention of compost, but specifications varied widely. Many states outlined using compost for erosion control. The particle size distribution requirements differed from state to state significantly. Many of the requirements outlined by the USCC and AASHTO were not incorporated into design specifications for each state. Overall, DOTs would benefit from using compost effectively and efficiently. The findings from this study can be used to guide communication with DOTs and aid in development of the next iterations of design specifications.

Co-Author: Corey Poland, University of Wisconsin, Everett, WA,