Railroad Track Design-build Agreement

Exhibit 10.13 " Nationwide Service" 800-999-3050 262-252-3377 Fax 262-252-3393 VOLKMANN RAILROAD Engineering - Construction Maintenance BUILDERS 14625 West Kaul Avenue - Menomonee Falls, WI 53051 Railroad Track Design-Build Agreement Owner Cassco Amaizing Energy LLC, 1201 E. 7 s' Street, Atlantic, IA 50022 Design-Build Contractor: Volkmann Railroad Builders, Inc (VRB) Date: September 29, 2006Whereas, Owner desires to have VRB design and build a complete and functional railroad track system to serve Owner' s proposed facility known as Cassco Energy ethanol plant located in Atlantic, lowa, Owner and VRB agree as follows: Phase One " Conceptual Drawings" : Owner will provide site map and topo phic survey of proposed site at no cost to VRB. Based upon information provided by Owner as to required railcar capacity, types of railcars, and service needs, VRB will furnish a Conceptual Plan indicating a possible track layout This plan is for discussion purposes and does not guarantee railroad approval and is subject to final field survey, drainage considerations, utility conflicts, construction drawings, local permits, and railroad approvals. A track construction cost estimate will be provided. for Owner' s budgeting purposes. Phase Two " Construction Drawings" : After preliminaty approval of the Conceptual Plan, VRB will provide detailed track construction drawings for final approval. VRB will coordinate with the operating railroad, the facility designer and builder, and the site civil engineer to establish final layout and elevations. Final plans will include both plan and profile views of the complete track facility. Note: Environmental and geotechnical investigation/evaluation is not part of VRB' s scope of work, Phase Three " Construction" : Owner and VRB agree that a track construction agreement will be based upon the final construction drawings to determine quantities of track, derails, turnouts, road crossings, ...