2) the minimum biocrude sale price and theminimumanimal feed sale pricewere determined for
a 30-year payback period and the current market price for either the animal
feed (when determining the minimum biocrude sale price) or the
biocrude (when determining the minimum animal feed price). For Case
5, which includes ethanol as a co-product, the minimum animal feed
and biocrude price calculations also assume the current market price
for ethanol. A 30-year facility lifetime was selected because the pond
liners are guaranteed for 20 years and the HDPE pipes have N30 year
lifespans (the two greatest contributors to capital cost), and there is a
large maintenance budget.