Underground leachate barrier and method of making same
OwnerGilbert R. Tallardinventor
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Abstract
The invention comprises a method for making an underground barrier for hazardous leachate that includes digging a trench under biodegradable slurry adjacent a contaminated area, placing a liquid impervious membrane on one side of the trench and securing it by an impervious plug of material lining the bottom of the trench adjacent the membrane's lower end. A drain pipe and risers are positioned in the slurry into which filter gravel is subsequently added.
Claims13
A barrier for preventing underground leachate from flowing across a trench dug adjacent a contaminated area comprising:
- (a) a trench extending from ground surface to a fluid impervious stratum,
- (b) membrane means of fluid impervious material in said trench having an upper end adjacent the top of said trench and extending to a lower end adjacent the bottom of said trench,
- (c) plug means extending along said bottom of said trench in fluid sealing engagement with said lower end of said membrane means and said fluid impervious stratum, and
- (d) filter means extending from said plug means to said top of said trench.
A method of constructing a barrier for preventing underground leachate from flowing out of a contaminated area comprising the steps of:
- (a) digging a trench adjacent said contaminated area from the ground surface to a depth sufficient to reach a fluid impervious stratum,
- (b) filling said trench with a slurry during digging to support the sides of the trench during digging,
- (c) lining a side of said trench with a fluid impervious membrane means, and
- (d) providing plug means along the bottom of said trench in fluid sealing engagement with said membrane means and said fluid impervious stratum.
A barrier for preventing underground leachate from flowing across a trench dug adjacent a contaminated area comprising:
- (a) a trench extending from ground surface to a fluid impervious stratum,
- (b) membrane means of fluid impervious material in said trench having an upper end adjacent the top of said trench and extending to a lower end adjacent the bottom of said trench, and
- (c) plug means extending along said bottom of said trench in fluid sealing engagement with said lower end of said membrane means and said fluid impervious stratum.
Dependencies are inferred from the claim text.