You are to evluate the optimum level of environmental protection for a landfill that has a 30 year life. Decide on the type of liner to be used to minimize the overall construction and leak damage cost. The rate is 4% per year.

Treatment	Construction Cost $	Potential Leak Damage Cost $	Leak probability
No liner	-	1,000,0000	1/5
Clay liner	250,000	800,000	1/10
Polypropelne liner	500,000	400,000	1/25
Geopolymer liner	900,000	300,000	1/100

A new product has the following sale volume/unit cost characteristics: