Meeting the Realities of Corn Stover Supply Chain Operation February 17, 2017

DUPONT CELLULOSIC ETHANOL Making Cellulosic Ethanol A Reality in Nevada, Iowa STOVER February 2014 Copyright © 2014 DuPont. All rights reserved

DuPont Feedstock Supply Chain Design - - Service Provider Model - - Farmer Acceptance: DuPont contracts with farmer to purchase residue Operations Readiness: DuPont provides equipment and labor to remove residue as a service Store Transport Sustainability: DuPont, trained and audited by NRCS, certifies sustainability of farm system

DuPont Feedstock Supply Chain Design - - Service Provider Model - - Farmer Acceptance: DuPont contracts with farmer to purchase residue Operations Readiness: DuPont provides equipment and labor to remove residue as a service Store Transport Sustainability: DuPont, trained and audited by NRCS, certifies sustainability of farm system

Feedstock Supply Chain Contracting Experience 2020: 190,000 acres 2015: 85,000 acres Biomass collection 2014: 115,000 acres Farmer contracting 2013: 60,000 acres 2012: 16,000 acres Storage 2011: 7,500 acres Transport 2010: 2,500 acres Delivery & Pre-processing

DuPont Feedstock Supply Chain Design - - Service Provider Model - - Farmer Acceptance: DuPont contracts with farmer to purchase residue Operations Readiness: DuPont provides equipment and labor to remove residue as a service Store Transport Sustainability: DuPont, trained and audited by NRCS, certifies sustainability of farm system

DuPont Feedstock Supply Chain Design - - Service Provider Model - - Farmer Acceptance: DuPont contracts with farmer to purchase residue Operations Readiness: DuPont provides equipment and labor to remove residue as a service Store Transport Sustainability: DuPont, trained and audited by NRCS, certifies sustainability of farm system

Managing Soil Health and Productivity Pathway to: Reduced Tillage Eliminated Tillage Cover Cropping

Together we can accomplish what no one can do alone.