Cody Vavra, P.E. Email and Phone Number

Experience includes: hydraulic system design, water treatment chemistry, biogas and RNG mass and energy balances, P&ID design, mechanical design, economic evaluation, Pro Forma development, project development, plant optimization, wastewater treatment plant design, reclaim water system design, lift station design, water treatment plant design, capital assets improvements master planning, water system master planning, capacity analysis for unit processes, HVAC design, state submissions and regulatory compliance, resource recovery and fertilizer system design.

Projects:Corn Oil System -• Conducted bench scale R&D for optimal feed stream selection• Designed and managed system modifications for proper scale-up• Developed start-up SOPs, conducted PSSR, and MOC• Commissioned unit operation as the Project Lead• Optimized system operations with correlations to protease dosage,temperature, feed rate, and separator efficiency• Increased oil recovery by 38%Residue Water Heat Recovery -• Designed heat exchangers, instrumentation, and piping layout• Developed start-up SOPs, conducted PSSR, and MOC• Managed construction and commissioned the $300,000 system as theProject Lead• Optimized system for improved heat recovery• Reduced total thermal energy inputs to distillation unit by 7.4%Operations:• Directed daily operations as the Production Manager• Developed SOPs for CIP (Clean-in-Place) and plant shutdown operations• Optimized continuous fermentation• Reduced enzyme usage by 77% and bacterial control chemicals by 94%• Tuned problematic control loops in Siemens DCS for system stability• Stimulated positive plant culture between operations and management

• Conducted and compiled R&D data for enzyme/chemical trials• Generated material and energy balances (MEB) for two ethanol plants• Integrated DDGS Screener into the plant• Created and updated existing operator training manuals• Created and submitted Environmental/Waste water reports for compliance