A radon gas removal apparatus configured to provide evacuation of radon gas from a desired area or building. The radon gas removal apparatus includes an exterior housing forming an interior volume. Disposed within said interior volume is a motor assembly and a fan operably coupled. The motor assembly includes an upper portion having a metal housing wherein the upper portion has a cavity proximate the top thereof configured to store a circuit board. The cavity is hermetically sealed utilizing a lid member. A heat sink assembly is proximate the lower edge of the upper portion of the motor assembly. The heat sink assembly includes a central void configured to receive a motor therein. The heat sink includes a first wall and a second wall having a void intermediate configured to a heat sink material. A motor is present within the central void of the heat sink assembly.

Presented is an apparatus for radon and other soil gas mitigation. The apparatus includes an outer sleeve substantially cylindrical in shape and formed using one or multiple modular structures having foldable flaps with openings. The apparatus further includes a lid for closure of a top opening of the outer sleeve. The lid includes pipe flange(s) configured thereon for allowing a suction pipe to connect at its one end. During operation, other end of the suction pipe is operationally connected to operating inline fan which when operated exerts maximum negative pressure on the surrounding soil to entrain various soil gases that needs to be drawn out of the soil gas prone site (Eg. building).

There is provided a geomembrane consisting of a multilayer structure comprising a barrier layer (A), an adhesive layer (B) made of an acid-modified thermoplastic resin and a thermoplastic resin layer (C), wherein the thermoplastic resin layer (C) is laminated on at least one side of the barrier layer (A) via the adhesive layer (B), and the barrier layer (A) has an ethylene unit content of 18 mol % or more and 55 mol % or less and comprises a modified ethylene-vinyl alcohol copolymer comprising a modifying group having a primary hydroxyl group. The geomembrane exhibits excellent peer strength between the barrier layer and the adhesive layer, exhibits further improved peel strength after prolonged exposure to high temperature and high humidity conditions.

A barrier tape comprises a barrier section comprising one or more barrier layers and one or more adhesive layers adhered to a face of the barrier section. The barrier tape can be used to join together adjacent barrier sheets or to patch a breach in a barrier sheet to form a barrier assembly.

A vapor mitigation apparatus and method for use with the construction of a building. The apparatus includes a vertical member configured to be affixed to a foundation wall proximate a footing that is supporting the foundation wall. The vertical member has a first end located proximate to a footing and a second end. A horizontal foot is located at the first end of the securing piece. The horizontal foot is configured to rest against the footing. The apparatus may include a mechanical clip located at the second end of the vertical member and is configured to secure a gas impermeable membrane. In the alternative, the vertical member and the gas impermeable membrane are of a unitary structure. The method includes securing the apparatus to the foundation wall, sealing the gas impermeable membrane to a membrane that is covering the footings or granular base of the building and then creating a concrete slab by pouring concrete over the footing and apparatus. The apparatus may also include a membrane material and a rigid ring located at the approximate center of the membrane material. An inner portion of the membrane material is located inside the perimeter of the ring. The rigid ring is configured to be located around one of the at least one penetration such that the inner portion of the membrane material is configured to stretch around the one penetration resulting in the sealing of the apparatus to the penetration.

The present invention relates to a method for reducing a flow of soil air to the indoor air in a building (1), wherein the building comprises at least one wall (2), which wall comprises a permeable channel (23) connected with soil air, wherein the method comprises achieving a flow stop (24) for the soil air in the permeable channel (23). The invention also pertains to a device to reduce the flow of soil air to indoor air in a building (1).

A vapor mitigation apparatus and method for use with the construction of a building. The apparatus includes a vertical securing piece configured to be affixed to a foundation wall proximate a footing that is supporting the foundation wall. The vertical securing piece has a first end located proximate to a footing and a second end. A horizontal foot is located at the first end of the securing piece and extends away from the securing piece. The horizontal foot is configured to rest against the footing. The apparatus also includes a mechanical clip located at the second end of the vertical securing piece and is configured to secure a piece of plastic sheeting. The method includes securing the apparatus to the foundation wall, securing a plastic sheeting to the mechanical clip and then creating a concrete slab by pouring concrete over the apparatus. The apparatus may also include a membrane material and a rigid ring located at the approximate center of the membrane material. An inner portion of the membrane material is located inside the perimeter of the ring. The rigid ring is configured to be located around one of the at least one penetration such that the inner portion of the membrane material is configured to stretch around the one penetration resulting in the sealing of the apparatus to the penetration.

A vapor mitigation apparatus and method for use with the construction of a building. The apparatus includes a vertical securing piece configured to be affixed to a foundation wall proximate a footing that is supporting the foundation wall. The vertical securing piece has a first end located proximate to a footing and a second end. A horizontal foot is located at the first end of the securing piece and extends away from the securing piece. The horizontal foot is configured to rest against the footing. The apparatus also includes a mechanical clip located at the second end of the vertical securing piece and is configured to secure a piece of plastic sheeting. The method includes securing the apparatus to the foundation wall, securing a plastic sheeting to the mechanical clip and then creating a concrete slab by pouring concrete over the apparatus.

A controller for controlling a system for mitigating the flow of vapors from contaminated soil into a building controls a blower pulling an exhaust from underneath the sub slab of the building and blowing the vapors away from the building. The blower is controlled by pressure sensors that measure the pressure drop across the sub slab. The sensors are monitored by the controller to make sure they all have a minimum pressure drop. If any of the sensors have an inadequate pressure drop, the blower speed is increased a small amount by the controller. If all of the sensors have adequate pressure drop, then the blower speed is decreased by a small amount. The controller then rechecks the pressure drops on a periodic basis and makes appropriate blower speed adjustments after each measurement.

A concrete slab underlayment product is used at an excavation area at which a concrete foundation slab is to be poured. The underlayment combines a vapour barrier layer with a set of foam insulation bodies. The vapour barrier layer spans fully over the entire set of foam insulation bodies, which are spaced apart from one another at least at lower ends thereof opposite the vapour barrier layer. This leaves drainage/air spaces open between the foam insulation bodies when laid in an installed position atop the floor of an excavated area. In use under a concrete slab, the vapour barrier layer forms a gas and moisture barrier, and the foam insulation bodies and the drainage/air spaces therebetween form a combination of void spaces, drainage channels and insulation blocks between the concrete slab and the floor of the excavation area.