A radon gas removal apparatus that is operable to substantially inhibit the entrance of radon gas into a structure. The radon gas removal apparatus is operably coupled to an area to which the structure is superposed. A housing is further included wherein the housing has a lower portion and upper portion mateably coupled. A blower assembly is present within the housing and is mounted in a vertical upright position. The lower portion of the housing includes a bottom having a mount extending upward therefrom to which the blower assembly is operably coupled utilizing a coupling. A fluid aperture is present in the mount and is operable to facilitate the egression of accumulated fluid present at the bottom of the housing into a connected pipe. The housing further includes an air turbulence diffusion member present on an exit aperture formed in the upper portion of the housing.

A geosynthetic sensor that incorporates an arrangement of a first layer of lengths of electrically conductive geosynthetic and a second layer of lengths of electrically conductive geosynthetic where each said length undergoes a change in electrical resistance or capacitance when subject to changes in any one or more of: pressure; strain; water content; or temperature.

The present disclosure relates to a system for installing anti-scouring material on a premanufactured marine foundation, said foundation being transportable in a self-floating manner to its final position on the seabed; comprising: at least one device for housing the anti-scouring material; at least one device for securing the anti-scouring material and/or said housing device to the marine foundation; and wherein the housing device and the securing device are installable on the marine foundation prior to the marine foundation being installed in its final position.

The present disclosure relates to a system for installing anti-scouring material on a premanufactured marine foundation, said foundation being transportable in a self-floating manner to its final position on the seabed; comprising: at least one device for housing the anti-scouring material; at least one device for securing the anti-scouring material and/or said housing device to the marine foundation; and wherein the housing device and the securing device are installable on the marine foundation prior to the marine foundation being installed in its final position.

Composite particles contain a natural stone or aggregate core and a coating of two or more sorbent layers collectively containing at least two distinct kinds of sorbent materials effective for sorbing two distinct contaminants. One or both sorbent layers may be mixed with a water-absorbent, swellable clay that, upon contact with water, causes spalling or disintegration of the coating layer to release the sorptive material into a body of water such as a pond, ditch, stream, or riverbed. Additional swellable or protective layers may also be present. The composite particles are deployed into a pond, ditch, river, or streambed where the core of natural stone remains in the riverbed. The sorptive materials of the two different sorbent layers sorb and fix a wide range of contaminants, including both the heavy and light-weight hydrocarbons, from the water, and settle as a fine sediment. The sediment with sorbed contaminants is then removed by means such as hydraulic collectors or dredging.

A clamping tool (1) is disclosed suitable for securing underwater protective shields, jackets and covers. A system is also described comprising the clamping tool and a protective shield, jacket or cover. The clamping tool (1) comprises a clamp (2), a jaw attachment (12) and a plurality of locking bolts (46). The clamp (2) comprises a first claw (20), a second claw (22), and a pivot (3). The jaw attachment (12) comprises a first tube (40) connected to the first claw (20) and a second tube (42) connected to the second claw (22). The first tube (40) and the second tube (42) comprise a plurality of holes (44) for receiving the plurality of locking bolts (46) and the pivot (3) is configured to transform a rotational torque applied by a user into a clamping pressure of the jaw attachment (12).

Disclosed is a shielding apparatus for high-depth groundwater well pollution prevention grouting comprising: a shielding portion which is provided on the outer circumferential surface of a grouting casing installed in an excavation hole in the ground and compressed to be in close contact with a hollow wall of the excavation hole; a compression portion which is provided on the outer circumferential surface of the grouting casing and formed to descend toward the shielding portion and brings the shielding portion into close contact with the hollow wall of the excavation hole to guide the excavation hole to be sealed; and a pressure equalization injection tube portion which is connected with the compression portion on the outer circumferential surface of the grouting casing and lowers the compression portion by water pressure generated by supplying water from the outside through a water supply tube.

A membrane-lined wall for levee reinforcement or leak prevention, prevention of water migration, and pollution control of impoundments. The membrane-lined wall generally includes a cementitious or concrete wall formed within an excavated trench. The concrete may be internally reinforced, and the wall may also comprise a double-layer of impermeable geomembrane liner that forms a barrier between the concrete and the sides and bottom of the trench. The membrane or liner reduces water migration, prevents levee leakage, and prevents the escape of contaminants in impoundments.

A containment basin comprising a plurality of interlocking modular panels, wherein said modular panel are free-standing. The interlocking modular panel for use in a containment basin, comprise: a base section; and a side section; wherein said base section panel and side section panel being fixedly connected to one another at an edge and comprising a plurality of rib elements bridging the side section and base section.

A containment basin comprising a plurality of interlocking modular panels, wherein said modular panel are free-standing. The interlocking modular panel for use in a containment basin, comprise: a base section; and a side section; wherein said base section panel and side section panel being fixedly connected to one another at an edge and comprising a plurality of rib elements bridging the side section and base section.