paraphase text: Another option we considered as an alternative is a geosynthetic clay liner (GCL), the system would consist of a 6-inch layer of excavated soil, 1ft gravel leachate collection layer, 40 mil HDPE layer, and a bottom 40 mil HDPE layer & upper protective geotextile, with a floor of excavation graded at an angle (4% grade). There is no estimated thickness for a hydrated sodium bentonite layer (we can assume less than 1inch thick when hydrated). As an alternative, the GCL must be equal to or greater than the CCL system, with a 95% relative compaction, with a CCL hydraulic conductivity of 3x10^-10 cm/sec. Moreover, market conditions can influence our choice, the company Dig'em Up , the estimate is $0.32/ft^2 for a smooth liner (floor), and a textured liner (sloped walls) which costs $0.52/ft^2 (considering a 40-mil material will cost less than a 60-mil material). The GCL estimated cost is about $1.4/ft^2, about $686,000 for the HDPE liner material and about $ 1.44M for the GCL material