Abstract: A tough, high-strength geomembrane made from a custom blend of polyethylene copolymers, for protecting waterproofing courses from impact and pressure damage of debris resting against the waterproof course. A slip sheet configuration reduces surfaces stress due to earth movement and subsurface cracking thereby maintaining the protective course intact without any effect on the waterproofing layers. The geomembrane is available as lightweight rolls which can be easily be handled by one man. The film is installed horizontally in continuous sheets with few adhesive joints. Installation begins by applying a thick brush coat of the selected waterproofing membrane material (usually a rubber coat but may be any waterpoofing material). The film is unrolled along the wall, held up into position and secured using plastic self-sealing plugs and/or plastic termination bars. Concrete nails are used to attach the self-sealing plugs or termination bar to the wall.

Abstract: A spill containment system for storage tanks, flow devices, and the like, and a containment system for spilled light non-aqueous phase liquid are provided. The spill containment system comprises a liner for receiving and containing liquid that spills, as well as a withdrawal tube that sealingly extends into the liner at a high point thereof. The containment system comprises a trench, filled for example with low capillarity medium, for at least partially surrounding an area where light non-aqueous phase liquid is stored or may migrate to. A liner is disposed over the top of the trench and along at least a portion of one side thereof. At least one withdrawal tube sealingly extends through the liner at a high point thereof and into the trench.

Abstract: An apparatus for preventing the contamination of a fresh water source by grey water to be land applied, the apparatus comprising a source of grey water, a source of fresh water, a mixing tank having inlets for fresh and grey water as well as outlets for mixed fresh/grey water, and a safety overflow to prevent contamination of the fresh water source by grey water. There is a total disconnect between fresh water and grey water. Also provided is a means for preparing a desired mixture of fresh and grey water to be land applied, having desired characteristics of concentration of nitrogen, phosphorous, and other nutrients. A means for automatically transferring grey water from a lagoon or holding pond to an additional tank when the level of the grey water in the lagoon or holding pond exceeds a desired level is provided. Finally, the invention allows injection of additional nutrients, herbicides, pesticides and the like into the mixture to produce a desired composition for land application.

Abstract: A polymeric waterproofing membrane is provided which has an improved biaxial elongation compared with conventional polymeric waterproofing membranes. The membrane is a composite of an upper layer and a lower layer as well as an in between situated barrier layer, wherein the barrier layer comprises at least one organic polymeric material and the upper layer and the lower layer comprise at least one organic polymeric material which has better mechanical characteristics in comparison to the organic polymeric material used in the barrier layer. The upper layer and the lower layer contain the same or different materials. The organic polymeric material for the barrier layer is not damaged upon biaxial elongation of the polymeric waterproofing membrane, and biaxial elongation of the polymeric waterproofing membrane does not result in separation of the layers.

Abstract: An adjustable, compact and stable sump stabilizer bar is disclosed. In one embodiment, the stabilizer bar may be made from a continuous material and the bar may be unitary in form. The stabilizer bar may include a substantially planar and continuous plate, and is configured to adjustably mount components, such as shear valves, to the stabilizer bar. Tabs extend substantially perpendicular to, and in generally opposite directions from, the plate. The tabs are configured to adjustably secure the stabilizer bar to the mounting struts in a sump. A shear valve may be adjustably and stably mounted to a sump using the stabilizer bar in close-to-side-wall pipe entry applications without interference from stabilizer bar components or parts.

Abstract: A mobile reuse center structure for containment and handling of hazardous materials comprising a base assembly having a containment pan, right side and left side walls, front and rear walls and a roof assembly. The right side wall and the front wall each have a door which allow access to the interior of the structure by its user. The left side wall has a plurality of deflagration vents which burst open when pressure is applied to the deflagration vents. The roof assembly has at each corner thereof a corner fitting which may receive a twistlock stacker. The twistlock stackers when coupled to the roof assembly corner fittings allow a drum rack to be stacked on top of and secured to the roof assembly. A machinery compartment is located in the rear end of the mobile reuse center structure. The machinery compartment includes the electrical control and power distribution system for the mobile reuse center structure.

Abstract: A system for removing contaminants from the phreatic zone, also known as the saturation zone, or groundwater. The technique preferably involves gas sparging while slowing down the sparging process by placing packing balls into the eductor tube. A preferred embodiment of the system is comprised of a means for supplying gas to the lower extent of a well which induces a flow of groundwater and gas bubbles up the well. The system may also contain a conduit within the well which extends below the water table The conduit has a lower fluid-permeable section which is located below the water table and an upper fluid-permeable section which is adjacent to the water table the system may further comprise an eductor tube contained in the conduit which extends from the top extent of the conduit to the saturation zone. Packing balls may be located between the eductor tube and the means for supplying gas to the lower extends of the well.

Abstract: An inflatable dike formed from sections includes an upper and lower partition. The lower partition includes a water inlet and is water-fillable via the water inlet to add weight to the dike. The upper partition attaches to partially surround to the lower partition. The upper partition includes an air inlet for inflating the upper partition with air. The upper partition inflates to add rigidity, and to laterally support the lower partition.

Abstract: A removable containment apparatus for containing pipeline valve seepage comprising a one piece foldable leak proof membrane with an outer edge contoured to form a container about a pipeline valve when said membrane is folded about a midline and over the pipeline valve, said one piece membrane having: a first section on said edge on said membrane which forms an aperture for an in-line to said valve when said membrane is folded, a second section on said edge on said membrane which forms an aperture for an outline from said valve when said membrane is folded, a third section and fourth section on said edge on said membrane which join and form an aperture for a stem on said valve when said membrane is folded, a fifth section and sixth section on said edge of said membrane which join forming a seam between said in-line and said stem, a seventh section and eighth section on said edge of said membrane which join forming a seam between said outline and said stem, means for removably sealing said first section to said

Abstract: A pit assembly 10 is provided to assist in the installation of a pit, such as a dynamometer pit, into cementitious material. The pit assembly 10 includes a pan 20 which has an open top and an interior region having a desired size for housing equipment, such as a dynamometer. A floor of the pan 20 is preferably at least partially sloped so that any liquids within the pan 20 migrate to a sump 40 in the pan 20. A rebar cage 50 surrounds the pan 20. The rebar cage 50 is securely attached to the pan 20 through ties 52, 54, 56. The rebar cage 50 includes various different loops 60, 62, 64 and other rebar segments forming the rebar cage 50. The rebar cage 50 is attached to the pan 20 before the cementitious material is poured around the pit assembly 10 and before the pan 20 is placed in the desired position.

Abstract: A liquid distribution system for distributing effluent from a source of waste water. This liquid distribution system is contained within a distribution box and includes liquid inlet piping and a series of liquid flow splitting elements arranged in parallel, perpendicular to the horizontal flow of effluent through the distribution box. In addition, an adjustment system is incorporated into the liquid distribution system for maintaining the level of the liquid distribution system in the ground.

Abstract: A geotechnical structure that includes a first body of soil having a first unsaturated concentration of moisture. There is also a second body of soil, which includes a second unsaturated concentration of moisture that is different from the first concentration. A moisture barrier is interposed between the first body of soil and the second body of soil. The moisture barrier includes an upper and lower layer that draw water laterally. A medial capillary barrier layer prevents traverse moisture migration between the first and second bodies of soil. Moisture migration both upwardly and downwardly is thus prevented, and water in the first and second bodies of unsaturated soil is drained laterally to reduce pore water pressures in the first and second bodies of soil.

Abstract: An apparatus and method for controlling ground water flow within a contaminated soil zone. A constant head moat is created surrounding the contaminated volume by digging a trench encircling the volume. A closed loop pipe, slotted or perforated, is laid in the bottom of the trench and serves to cause a constant hydraulic head around the perimeter of the zone. This prevents ground water movement into the zone. An upward gradient is created within the zone by trees, plants or mechanical pumps to move ground water inward and upward. Leaching or movement of contaminants out of the zone is minimized or eliminated.

Abstract: A drainage water pumping system. A number of drainage pumps are positioned at two different levels. Drainage water flowing into a drainage water pumping system from an underground inflow main pipeline is pumped to a discharge destination. Preferably the drainage pumps installed at the lower installation level have a high pump head and a small capacity, while the drainage pumps installed at the higher installation level have a low pump head and a large capacity. The drainage pumps can be in a circular arrangement with a congregated delivery pipeline installed lengthwise at the center of the circular arrangement and having each of the drainage pumps connected to it.

Abstract: An elongate grate capable of securing an edge portion of an artificial turf surface within a drainage channel is provided. The grate includes an elongate central portion defining a plurality of openings to permit runoff from the artificial turf surface to flow into the drainage channel. Connected to at least one exterior edge of the central portion is a downwardly extending wall portion being interior of the exterior edge for applying a downwardly directed engagement force to the edge portion of the artificial turf surface. According to another embodiment of the grate, an elongate slot is integrally defined in the central portion having a width such the edge portion of the artificial turf can be frictionally engaged therein. According to yet another embodiment, a grate is provided with a central portion positioned between opposed edge portions and defines a plurality of openings therein such that an impervious athletic surface can be formed over each of the edge portions.

Abstract: The invention provides a portable apparatus and a method for quickly conting, suppressing and mitigating localized hazardous material spills. The hazardous material containment apparatus has a vapor, aerosol and particulate containment vessel having a cover and side walls attached around a perimeter of the cover to define an open central cavity. Each of the cover and side walls are composed of a material which resists penetration of a hazardous material therethrough. A tube extending through the vessel has a first end open at a point inside the cavity and a second end at a point outside the vessel. Vacuum and filtration systems are attached to the second end of the tube for extracting a hazardous material from inside the cavity to outside the vessel through the tube.

Abstract: An apparatus and method for installing a fluid dispenser (10) in a submerged relation in wastewater of a wastewater chamber (14). The fluid dispenser (10) is secured to a bracket (44) which slides along a vertical post (32) in the wastewater to a desired depth at which a stop (46) positions and blocks further sliding movement of the bracket (44) and fluid dispenser (10). Fluid dispenser (10) and sliding bracket (44) move downwardly from the upper end of post (32) and when sliding bracket (44) hits the stop (46), bracket (44) and dispenser (10) pivot relative to the post (32) to a desired position and direction of the dispenser (10). Serrated knife edges (100) on propeller (92) cooperate with serrated knife edges (112) on collar (90) on opposed sides of an orifice (106) to cut and remove any solid particles obstructing the orifice (106).

Abstract: A coaxial piping system connected between an underground pump and an above-ground liquid dispenser is used to provide containment of the pumped liquid from the underground piping system, preventing unintended release into the environment. A pair of coaxial pipes are removably connected to the underground pump at one end and to the dispenser at the other end using quick-disconnect fittings to allow for the replacement of the piping. A primary pipe for conveying gasoline or the like is surrounded by a secondary pipe, which provides containment in the event of leakage from the primary pipe. The piping system can be tested for leaks or replaced from grade without excavating at the installed tank site. A sensor in the annular space between the primary and secondary pipes may be used to detect leakage. A path may be provided for the gravity drainage of such leaks from the secondary pipe into a containment chamber, where the liquid may be detected and removed.

Abstract: A system for preventing release from an underground storage tank from further migrating into surrounding geological formations and groundwater of a surrounding underground storage tank field includes a low permeable layer surrounding the tank field and a set of horizontal pipes positioned above and below the underground storage tank above the low permeable layer within underground storage tank field. The horizontal pipes include two portions including a lower portion installed below the underground storage tanks and an upper portion installed above the underground storage tanks. An air blower injects air in the lower portion of the horizontal pipes for providing air flow which passes through the formation of the underground storage tank to strip out volatile and semi-volatile components of any release from the underground storage tanks when there is a small release from the underground storage tanks.

Abstract: The system includes a plurality of flood plains. Each flood plain contains a plurality of plants and each plant is held in a pot. The flood plains are excavated at different elevations from an upper most elevation to a lower most elevation. The flood plains are sequentially flooded for a resident time period with a selected volume of water directed from a water source. As the flood plains are excavated to different elevations, gravity, and a series of flood gates, control the water flow from one flood plain to a next lower flood plain. Each flood plain has a top surface and an underlying bed comprising a soil and clay composition. The surface of each bed is contoured to adequately drain water from one flood plain to the next. This clay mixture firms the bed to adequately support vehicles and laborers to prevent depressions in the bed which may adversely affect water flow in and out of a flood plain. Each of the flood plains is lined with a water impermeable membrane.

Abstract: A first molding is provided for forming from concrete a drain component housing having a fluid channel therethrough, preferable having an exterior lateral dimension smaller than or equal to the O.D. of the drain pipe used in the system. After locating the drain pipe, and exposing its top surface, a drain hole is cut into the top surface without severing the drain pipe. The drain component housing is then placed over the drain hole, and mortared in place, providing a water-tight seal. If the drain component housing does not reach the earth's surface being drained, a riser drain housing is stacked on top of the lower housing to provide the desired height. A second mold is provided for pouring the riser housing from concrete, the riser housing also having a fluid channel therethrough.

Abstract: An underground water channel is provided in an underground of a large depth, and rain water and the like flow into this underground channel from flood control channels, conduits and rivers through vertical shafts. A pump well of a pump station is connected to a downstream end of the underground channel, and water flowing into the pump well is discharged by a pump to a discharge tank. The pump is disposed generally at a medium water level of the underground channel, and a lowest water level L.W.L enabling draining is the medium water level of the underground channel. In an open channel flow operation of an open channel-closed channel mixed flow operation, water level of the underground channel is maintained at the lowest water level L.W.L, so that the underground channel is in an open channel condition.

Abstract: An impoundment leak detection, location, and containment system includes a leak detection and location structure positioned below the impoundment with a system of conduit spanning substantially all of the extent under the impoundment. A mobile sensor system can be maneuvered through the conduit and into the leak detection and location structure to identify and locate leaks in the impoundment above. The system also includes a hydrocarbon sealing compound which has a sealing effect when exposed to fluids containing water and/or hydrocarbon liquids.

Abstract: The invention relates to a stabilized fluid barrier member and to methods of forming the same. The fluid barrier comprises a first outer sheet member having a top surface and a bottom surface, with a stabilizer element overlying at least part of the first sheet member top surface and abutting the top surface along at least a portion thereof. The stabilizer element contains a plurality of interstitial apertures adapted to contain a quantity of a selectively fluid-impervient barrier material and for substantially preventing displacement of the barrier material from the apertures, notwithstanding the angular inclination at which the fluid barrier member is oriented during manufacture, transport, installation and/or use. The barrier material is chosen for its ability to prevent passage of one or more particular fluids, in liquid or gas form, depending upon the application for which the barrier member is intended.

Abstract: With a method for constructing a water intake pipe, a vertical shaft 10 is constructed, and a shield tunnel 12 is constructed by causing a shield driving machine to advance from the vertical shaft 10 toward a seashore by breaking the wall of the vertical shaft 10. The tunnel 12 becomes a water intake pipe after the tunnel is constructed, and is built by annularly assembling segments 14 one after another at the rear side of the shield driving machine in line with the advancement thereof. Two types of segments 14, RC segments 18 and ductile segments 20, are used. The segments 20 are provided with water intake pores clogged by clogging members. After the tunnel 12 is constructed, workmen enter the shield tunnel 12 with compressed air supplied thereinto, and remove the clogging members of the ductile segments 20.

Abstract: There is provided by the invention a subsurface drainage system which promotes efficient and controlled subsurface drainage of fluids, such as irrigation water, applied to the surface of land such as a football field. A drain core apparatus is provided that provides rapid infiltration and later movement of subsurface fluids, but which is resistant to settling, compacting and crushing. The drain core is a thermoplastic mat having crush-resistant support members integrated with and upon a backing grid which holds the support members in spaced relation to one another. Fluid flowing into and through the drain core is collected and stored in a fluid storage container. The fluid storage container is adapted to be buried beneath the ground, and has an easily assembled internal support structure composed of vertically layered thermoplastic mats. The mats permit fluids to flow freely within the container, and yet lend vertical and structural stability to the container.

Abstract: A system for stabilizing moisture content of soil around and beneath the foundation of a building. The system includes a source of pressurized water; one or more conduits buried in the soil around the building foundation, at least a portion of soil conduit being pervious to water, allowing water therein to enter said soil; and a remotely operated valve connecting the source of water to the conduits to permit or prevent flow of water, respectively, from the source of water to the conduits. A controller is operatively connected to the remotely operated valve for transmitting signals to the valve for opening and closing thereof in a predetermined time cycle. At least one soil moisture sensitive device is operatively connected to the controller and/or the valve for interrupting signals transmitted to the valve, to prevent opening of the valve when the moisture content of the soil exceeds a predetermined amount.

Abstract: A method and apparatus for providing water from a lake, pond, or other body of water, relatively silt and sediment free. A water inlet is positioned off the bottom of the body of water and is adjustably supported from the bottom of the body of water. The inlet is maintained above the silt and sediment layer at the bottom of the body of water and below the surface layer of the body of water.

Abstract: A water well recharge throttle valve is configured as a hydraulically actuated flow control device that permits calibrated throttling of water used in Artificial Storage and Recovery (ASR), Salt Water Barrier, Dedicated Recharge and Injection Wells to prevent the free cascading of water and thereby eliminate the entrainment of air which may cause air fouling, bio-fouling, and calcite formation with a resultant reduction in permeability of the aquifer. The valve includes a fixed tubular member which is selectively mounted in one of three ways: (1) to the lower end of the pump column, below the pump with a check valve/strainer mounted below the unit and including a co-generation/recharge feature; (2) to the lower end of the pump column, and above the check valve and submersible pump; and (3) to the lower end of a drop pipe, with a blind flange connected to the bottom end of the valve, a dedicated recharge well application.

Abstract: A system for use in preventing a flow of gas from a gas-containing region (20) to an adjacent region (22) and/or for collecting or dispersing gas at the interface between the regions, comprising a composite barrier (10) installed so as to separate the two regions (20, 22), the barrier (10) comprising a gas-impermeable layer (11) and a gas-permeable membrane (12) interconnected so as to define an interspace (16) between them and arranged with the permeable layer (12) facing the region containing gas (20) to be dispersed or collected. A method is also described comprising the steps of connecting an aperture (36) or aperture of the barrier communicating with the interspace (16) thereof to pumping means (37) which, in operation, act to pump gas into or out from the interspace (16) by creating a pressure differential across the permeable membrane such as to cause gas to flow therethrough across a major proportion of its surface area.

Abstract: A panel assembly to be used in an RCC dam structure, or the like, includes a precast concrete panel, a geomembrane liner extending over the full face of the panel and a geotextile sheet backing on the liner directly attached to the panel. The liner seals the panel against water leakage in a manner that allows shifting of the dam structure without placing undue stress on the liner or the interconnecting sealing strips. The geotextile sheet is preferably fabricated of a mat of non-woven polyester fibers and the geomembrane liner is preferably polyvinylchloride. The geotextile sheet is attached by hardened concrete slurry integral with the panel. Once the panel assembly is connected to adjacent panel assemblies by the sealing strip to form the dam structure, stress concentrations are relieved in the event that the panels shift for any reason.

Abstract: A method of upgrading an existing unprotected submersible pump area with secondary containment to prevent accidental release of harmful materials from contaminating the soil below grade.

Abstract: A drain and inspection manhole for liquid conduits, in particular waste water and/or storm water drains, comprises a manhole section which is formed as a composite pipe having a smooth cylindrical internal pipe and a corrugated external pipe. The external pipe is deformed to comprise at least one connecting base with a marginal web. Apertures that are flush with each other are cut into the connecting base and the internal pipe, a connector being inserted in these apertures.

Abstract: A passive absorptive device covered with a layer of DNAPL-philic hydrophobic material, is disposed within a groundwater remediation well to soak up DNAPL (ie., dense non-aqueous phase liquid) seepage at the wall of the groundwater remediation well so that, after retrieval of the passive absorptive device from the well, the DNAPL soaked in the DNAPL-philic hydrophobic layer can be safely disposed of.

Abstract: A wave-forming apparatus comprises a water flow chute or pool and an aerofoil structure that shapes the flow of water generated by the chute or pool. The shaped flow of water then flows across a wave-forming aerofoil or ramp to produce a safe and surfable standing wave or traveling wave. A transparent wave-forming ramp may be used to enable spectators to view, from the underside, a surfer riding a wave formed on the wave-forming ramp. Wave enhancing devices are also provided to vary the shape of the surfable wave.

Abstract: A portable, modular fluid-containment system is described which can be assembled anywhere to form a wall or dike for preventing fluids (e.g., water) from escaping from their intended location and for preventing flooding. The system uses individual collapsible modules which can be stacked in rows and columns, as desired. The modules overlap each other and are also interconnected so that a liquid such as water can be used to fill all of the modules to make them more stable and immobile.

Abstract: A modular trench drain for use in a trench drain system. The trench drain includes an open-faced channel including a narrow throat into which water can flow and a wider flow passage. The trench drain can include an integrally formed, removable cover which renders the channel close-faced. The removable cover is removed after installation of the drain. The throat can be offset to allow curbside installation of the trench drain. Protuberances are provided to secure the drain in the material in which the trench drain is embedded. Securement clips are provided for receiving support rods and reinforcing rods to ease installation and to provide structural stability to the trench drain.

Abstract: Sloping water tunnels and channels interconnect existing sources of water with dry land areas to form new water basins. Turbines are installed in rapidly flowing portions of the water tunnels and channels to generate electricity. Overflow tunnels connected to the sloping water tunnels by water gates communicate with wastewater treatment plants feeding into the sloping water tunnels to open the water gates when the outflow of treated wastewater starts to back up. The water tunnels and channels are formed by removing earth and installing steel frames with sprayed on concrete which is waterproofed. The earth removed is used to fill valleys to create dams and dumped into existing lakes and ocean bays on pontoon railways to create breakwaters and islands. A number of existing sources of water and new water basins are interconnected by a number of open water channels navigable by water vessels to create a transregional navigable water transportation system.

Abstract: A floating reservoir cover tensioning system that eliminates unsightly towers that are mounted on the upper surface of the surrounding containing walls of a reservoir. A plurality of tensioning assemblies are mounted in cases supported on the top surface of the surrounding containing wall of the reservoir at predetermined spaced intervals to assure that the tension forces are equally distributed. Each of the tensioning assemblies has a combined structure of a cable drum and a storage drum journaled on a bearing extending up from a mounting plate. A pair of laterally spaced spring motor drums are also journaled on their respective bearings extending up from the mounting plate. One end of a first coiled-band spring is secured to one of the spring motor drums and its opposite end is secured to the storage drum. A second coiled-band spring has its one end secured to the second motor drum and its other end secured to the storage drum.

Abstract: A flood barrier having water fillable elongate tube portions and cylindrical water fillable junction portions. Water fill inlets, water drain outlets, air relief valves, and anchors are formed on the elongate tube portions and cylindrical junction portions. Ends of the elongate tube portions are held in watertight contact with the cylindrical junction portions with straps threaded through the anchors. Saddle portions prevent the elongate portion from rolling. The saddle portion has two loops with tubes placed in the loops, and the elongate tube portion is placed on the saddle portion with tubes straddling the elongate tube portion.

Abstract: The system includes a plurality of flood plains. Each flood plain contains a plurality of plants and each plant is held in a pot. The flood plains are excavated at different elevations from an upper most elevation to a lower most elevation. The flood plains are sequentially flooded for a resident time period with a selected volume of water directed from a water source. As the flood plains are excavated to different elevations, gravity, and a series of flood gates, control the water flow from one flood plain to a next lower flood plain. Each flood plain has a top surface and an underlying bed comprising a soil and clay composition. The surface of each bed is contoured to adequately drain water from one flood plain to the next. This clay mixture firms the bed to adequately support vehicles and laborers to prevent depressions in the bed which may adversely affect water flow in and out of a flood plain. Each of the flood plains is lined with a water impermeable membrane.

Abstract: A tank sump has a one-piece body comprising a hollow base member for collecting fluids leaking from a piping system, the base member having an upper portion and a lower portion, and a hollow riser section having an upper portion and a lower portion, the riser lower portion extending upwardly from the base member upper portion, the riser section having sidewalls with alternately adjacent vertically extending wall portions and outwardly extending, U-shaped grip portions. An integrally formed cover is defined on top of the riser section upper portion. The cover may be cut off from the riser section of the body. A gasket may extend between the cover outer periphery and the outwardly extending grip portion of the riser section, and a mechanism removably secures the cover to the outwardly extending grip portion with the gasket therebetween, in a substantially water resistant sealing manner. The cover may alternately be cut away from the body and discarded.

Abstract: A flood barrier wall consisting of a flexible tubular flood chamber, skirts and an air-filled flotation collar. In its unexpanded and deflated mode the device is relegated to a substantially flattened condition which can be folded, rolled up or placed on a spindle for ease of transport and rapid deployment at a flood site. Deployment consists of placing the barrier on the anticipated flood site, weighting and fastening the skirts to the ground and inflating the collar. As rising flood water enters the flood chamber it expands said chamber, resulting in an effective flood barrier.

Abstract: The present invention relates to a method for treating groundwater in situ in rock or soil. An elongate permeable upgradient zone and an elongate permeable downgradient zone, each in hydraulic communication with a permeable subsurface treatment zone and having a major axis parallel to a non-zero component of the general flow direction, are provided in the subsurface by any of a number of construction methods. The upgradient zone, downgradient zone, and treatment zone are situated within the subsurface medium and have permeabilities substantially greater than the adjacent subsurface medium's permeability. Groundwater is allowed to move from the subsurface medium adjacent to the upgradient zone into the upgradient zone, where the groundwater refracts and moves to a treatment zone.

Abstract: In a drain structure for an electric connection box, a drain hole (5) for discharging water permeating within a case (4) is provided in a bottom wall (4a) of the case (4) of an electric connection box (1) having a terminal insertion port (3b) of a terminal receiving portion (3); and a permeation prevention wall (6) for preventing the water discharged from the drain hole (5) from permeating within the terminal receiving portion (3) is provided at least in a portion between a discharge port (5a) of the dram hole (5) and the terminal insertion port (3b) of bottom wall surface (4b) close to the discharge port (5a) of the drain hole (5) in a projecting manner.

Abstract: A sump shield assembly particularly adapted for creating a watertight seal with a container sump which are used with underground fluid storage tanks is disclosed. The assembly prevents water from entering a containment sump. This assembly includes a sump adapter, a sump shield and spill collector boots which couple to spill collectors that are commonly used to collect fluid spilled during the filling or evacuation of underground fluid storage tanks. The sump adapter is mounted to a containment sump, and includes a groove to receive a sealing member. The sump shield is shaped and configured to mate with the sump adapter and the gasket, and is secured to the sump adapter with releasable latches. The latches are used to make the shield easily removable, and also provide the clamping force needed to compress the gasket sufficiently to create a watertight seal. The spill collector boots join the spill collectors and the sump shield, and have watertight seals at both ends.

Abstract: A portable berm for use in and out of doors. The berm includes a impervious flexible synthetic floor which has a berm wall formed about its periphery. The berm wall comprises a plurality of elongated plastic strips which are attached to the floor along their inner and outer edges each forming a cavity which extend around the floor. A plurality of openings are formed in the strips adjacent at least their edges. An adsorbent and absorbent hydrophobic material which allows water to pass through but absorbs chemical contaminants is positioned within the cavities to extend about the floor.

Abstract: An integrated underground storage reservoir and above-ground canopy system is provided. This system comprises a storage reservoir suitable for being buried beneath ground level and suitable for containing a fluid. The integrated system also includes a support system disposed in communication with the reservoir and suitable for projecting above ground level when the reservoir is in a buried condition. The support system preferably includes at least one support member. The integrated system further includes a canopy attached to at least one support member, suitable for providing shelter from weather while accessing the reservoir. In alternative embodiments of this invention, the support system includes support units disposed adjacently to, attached to the exterior of, and disposed within the interior of the underground storage reservoir. The integrated system allows direct access to the storage reservoir, minimizes underground piping and provides enhanced vapor recovery.

Abstract: A liner assembly for a manhole or passage comprises a multiple-ply, generally cylindrical tube. The outermost ply includes inner and outer surfaces and is adapted for being impregnated with material for rigidifying and bonding the outer surface of the outermost ply to a manhole or passage. The innermost ply includes inner and outer surfaces and is adapted for being impregnated with a material for rigidifying the innermost ply. An impermeable ply is disposed between the innermost and outermost plies. The impermeable ply includes an impermeable membrane having fibers impregnated on the inner and outer surfaces of the impermeable ply. The fibers of the inner surface of the impermeable ply bond with the epoxy impregnated outer surface of the innermost ply. Likewise, the fibers of the outer surface of the impermeable ply bond with the epoxy impregnated inner surface of the outermost ply, so that the manhole or passage becomes structurally reinforced.

Abstract: The secondarily contained piping system having two spaced access chambers that are interconnected by a secondary containment pipe to provide a sealed arrangement for a flexible fluid supply pipe, the ends of which are disposed within the access chambers. The outer flexible pipe is sized to permit the insertion and/or removal of the primary flexible pipe during installation and testing of the same and after backfilling of the trench within which the pipe is disposed, the outer flexible tubing partially collapses to engage and prevent relative movement between the two pipes while providing a flow path thereinbetween.