1. A containment system for low level nuclear waste involves a geotextile liner. There are four alternative designs. Decide which is the best alternative (i.e., alternative that minimizes overall annual cost). The design life is 50 years. The rate is 4% per year.

Liner type	Cost $	Cleaning cost if there is a leak $	Spill probability
Alt A	200,000	2,000,0000	1/20
Alt B	350,000	1,500,000	1/40
Alt C	600,000	300,000	1/100
Alt D	950,000	200,000	1/300