- Valero (Hartley, IA)
- …48 million bushels of corn into approximately 135 million gallons of denatured ethanol and 400,000 tons of distillers grains co-products. The bio-refinery ... drug screen.* *About Valero Renewables - Hartley* Valero's Hartley ethanol plant is located near Hartley, Iowa, about 100...The bio-refinery sits on approximately 350 acres and started ethanol production in August 2008. The facility uses a… more