Landscaping channel liner apparatus
Leaching chamber
Levee gate and process for the production thereof
Liftable and collapsible barrage
Light weight run-off trough
Lightweight semi-flexible dike
Linear action hurter
Liquid and flood water barrier wall forming-apparatus
Liquid barrier assembly and connector therefor
Liquid containment/diversion dike
Liquid damming protective bank as well as a method and a damming
Liquid flow controller device
Lock using air chambers
Locking gutter screen hinge
Low headroom culvert
Low profile buoyancy adjustment controller and valve system...