EXHIBIT 10.3.1 SAFETY-KLEEN CORP. SEVERANCE AGREEMENT PARTICIPANTS John G. Johnson, Jr. President and Chief Executive Officer Hyman K. Bielsky Senior Vice President/General Counsel James L. Breece Vice President, Technical Roy D. Bullinger Senior Vice President, Business Management and Marketing Robert J. Burian Senior Vice President, Human Resources Michael H. Carney Senior Vice President, Marketing Services and Customer Care Glenn R. Casbourne Vice President, Engineering Joseph Chalhoub Senior Vice President, Processing, Engineering & Oil Recovery David A. Dattilo Senior Vice President, Sales and Service Scott E. Fore Senior Vice President, Environment, Health & Safety F. Henry Habicht, II Senior Vice President, Strategic/ Environmental Planning William P. Kasko Senior Vice President, Operations and Information Ulisse Marini Vice President, Recycle Center Operations Clyde R. Phillips Divisional Vice President Clark J. Rose Vice President, Technical Services Laurence M. Rudnick Treasurer Clifford J. Schulz Controller Robert W. Willmschen, Jr. Senior Vice President, Finance