Abstract: A temporary silt guard for temporarily enclosing the open upper end of a drop inlet during the construction of a road system in commercial and residential developments is adapted to fit over and seat upon the open end of the drop inlet to enable runoff water to drain into the drop inlet while preventing silt and debris from being carried into and collected therein. The silt guard includes a body portion formed from a series of spaced slats defining radially spaced passages through the silt guard. A filter cover is received over the silt guard, formed from a silt screen material, with the slats of the body portion providing rigidity and strength to the filter cover. The filter cover filters out silt and debris while enabling storm water and runoff to drain into the drop inlet.

Abstract: A method of fabricating a groundwater monitoring system and a monitoring system formed using said method wherein a housing containing a groundwater monitoring well is slidably attached to a sheet piling section. After the sheet piling section is inserted in the ground, the housing is withdrawn so that the groundwater can be monitored by the well.

Abstract: A manhole for a storm sewage system comprising a structure having at least two outwardly extending substantially vertical flat panels projecting outwardly from the exterior surface a predetermined distance on opposite sides of the base portion of the manhole.

Abstract: A temporary silt guard for temporarily enclosing the open upper end of a drop inlet during the construction of a road system in commercial and residential developments is adapted to fit over and seat upon the open end of the drop inlet to enable runoff water to drain into the drop inlet while preventing silt and debris from being carried into and collected therein. The silt guard includes a body portion formed from a series of spaced slats defining radially spaced passages through the silt guard. A filter cover is received over the silt guard, formed from a silt screen material, with the slats of the body portion providing rigidity and strength to the filter cover. The filter cover filters out silt and debris while enabling storm water and runoff to drain into the drop inlet.

Abstract: A temporary silt guard for temporarily enclosing the open upper end of a drop inlet during the construction of a road system in commercial and residential developments is adapted to fit over and seat upon the open end of the drop inlet to enable runoff water to drain into the drop inlet while preventing silt and debris from being carried into and collected therein. The silt guard includes a body portion formed from a series of spaced slats defining radially spaced passages through the silt guard. A filter cover is received over the silt guard, formed from a silt screen material, with the slats of the body portion providing rigidity and strength to the filter cover. The filter cover filters out silt and debris while enabling storm water and runoff to drain into the drop inlet.

Abstract: A paddy field water level regulating device 6 installed between a water pipe buried along a farm road 43 and a farming plot 42, the device consisting of a cylindrical feed and drain basin 60 with a closed bottom, having a farming plot feed and drain port 61 communicating with the farming plot 42; a water inflow and drain section located in the geed and drain basin 60 near the bottom thereof and connected to the water pipe; a drain valve located in the water inflow and drain section; and a height-adjustable water level regulating weir 65 located in and water inflow and drain section.

Abstract: A temporary silt guard for temporarily enclosing the open upper end of a drop inlet during the construction of a road system in commercial and residential developments is adapted to fit over and seat upon the open end of the drop inlet to enable runoff water to drain into the drop inlet while preventing silt and debris from being carried into and collected therein. The silt guard includes a body portion formed from a series of spaced slats defining radially spaced passages through the silt guard. A filter cover is received over the silt guard, formed from a silt screen material, with the slats of the body portion providing rigidity and strength to the filter cover. The filter cover filters out silt and debris while enabling storm water and runoff to drain into the drop inlet.

Abstract: Below ground drain and conduit member to receive surface water. The member comprises two (2) extruded plastic assemblies that are joined together to form one (1) unit. This unit assembly is attached to a plastic carrier pipe, in a longitudinal fashion. The unit assembly is attached to the carrier pipe by a chemical welding process or other means.

Abstract: An irrigation conduit (10) includes a plurality of emitters (11) spaced apart along its length. A conveyance channel (12) is connected to each emitter (11) and is long enough so that a distal end (14) of the conveyance channel (12) may be positioned at or just above the soil surface with the conduit (10) buried below the soil surface. Each emitter (11) or each conveyance channel (12) includes associated with it a flow control arrangement (30) to control the rate of flow through the conveyance channel (12) when water is applied to the conduit (10) at a desired pressure and flow rate. The flow rate through each conveyance channel (12) exceeds the local hydraulic loading rate of the soil adjacent to the conveyance channel (12). The rate in excess of the local hydraulic loading rate causes localized flooding and allows the water to spread out substantially across the soil surface prior to moving downwardly into the soil.

Abstract: A plastic stackable riser for providing a grade level access for underground components such as septic tanks, distribution boxes, and drop boxes, including a cylindrical side wall having a top free edge and a bottom edge. The top free edge defines a first end opening and the second bottom edge is connected to a generally inverted U-shaped connecting member which defines a channel shaped to receive the first free edge portion of an adjacent stackable riser. In use, a plurality of stackable risers are interlocked together so that the side walls all extend along common vertical axes to the underground component and provide a gas-tight, liquid-tight column above the underground component.

Abstract: A temporary silt guard for temporarily enclosing the open upper end of a drop inlet during the construction of a road system in commercial and residential developments is adapted to fit over and seat upon the open end of the drop inlet to enable storm runoff water to drain into the drop inlet while preventing silt and debris from being carried into and collected therein. The silt guard includes a body having a filter box portion formed from a series of radially spaced slats. A silt screen material is encircled about at least the slats of the filter box portion and secured to the body portion, with the slats providing rigidity and strength to the silt screen material. The silt screen material filters out silt and debris while enabling storm water and runoff to drain into the drop inlet.

Abstract: A plastic stackable riser for providing a grade level access for underground components such as septic tanks, distribution boxes, and drop boxes, is disclosed. The stackable riser includes a continuous peripheral side wall having a top free edge and a bottom edge. The top free edge defines a first end opening and the second bottom edge is connected to a generally inverted U-shaped connecting member which defines a channel shaped to receive the first free edge portion of an adjacent stackable riser. In use, a plurality of stackable risers are interlocked together so that the side walls all extend along common vertical axes to the underground component.

Abstract: A method for deploying a work object, connected to a control system by an elongated, substantially flexible conduit, relative to a target, the method including the steps of substantially burying the work object in the earth in a predetermined position relative to the target with the conduit extending upwardly from the work object to the surface of the earth; extending the conduit to the control system substantially across the surface of the earth; and covering the portion of the conduit extending across the surface of the earth to conceal its presence. An apparatus for deploying a work object in an operational position, the apparatus having a housing adapted to be positioned beneath the operational position; a member mounted on the housing and adapted to mount the work object for movement to and from the operational position; and a system connected to the housing for moving the work object to and from the operational position.

Abstract: A flow diverter 10 for mounting on the flange 53 of an irrigation standpipe valve 52 comprising a hollow cylindrical body 12, having a side opening 14, an anchor strap 16 formed integrally with the body 12 below the side opening 14, and a cap 18 mounted to the body 12 above the side opening 14. The body 12 and the strap 16 have rows of anchor stops 33 and 35 which fit above and below the valve flange 53 and the diverter 10 is secured to the valve 52 by the anchor strap 16 and the stops 33 and 35.

Abstract: The present invention discloses a system and method for cleaning the field lines of a septic tank system. The field lines are outflow pipe fluidly connected to the septic tank. To the field line, there is connected a first pipe and a second pipe or a flush pipe and a vacuum pipe. One of the pipes directs cleaning fluid, usually water, into the field line while the other removes the cleaning fluid and other material from the field line through the field line. A third or valve pipe is added between the first and second pipes and the septic tank. A valve can be placed into the third or valve pipe which is used to close the flow of fluid between the septic tank and the first and second pipes.

Abstract: An apparatus is provided for installation in a manhole assembly. The mold apparatus is filled with a sealing material to establish a solid bond that blocks inflow of fluids at the joint between abutting components of the manhole assembly. The apparatus includes an open ring, a retaining band for urging the open ring into contact with the manhole so that the open ring defines an annular channel at the joint, and a sealing material dispenser for conveying sealing material into the annular channel. The sealing material hardens in the annular channel to provide the solid bond at the joint between the two manhole components. The manhole components may be an abutting manhole frame and manhole, or two abutting sections of manhole.

Abstract: An apparatus for use in conjunction with a silt collecting pond to prevent silt from being washed from adjacent land by rainwater comprises a base adapted to rest on the bottom of the pond and a cylindrical cage defining an upwardly open interior volume extending upwardly from the base. A conduit communicates between the interior volume of the cage and the exterior of the pond. Silt cloth is mounted about the cage and a floatable safety lid is adapted to cover the upper opening of the cage. In operation, silt bearing rainwater enters the pond and rises about the apparatus. Water passes through the silt cloth at a predetermined rate such that the water stands in the pond a sufficient time to allow silt to precipitate therefrom. When the pond has been filled with silt, a sleeve is slipped into the cage and a grated lid placed atop the sleeve so that the device thereafter provides for drainage of surface rainwater from the land.

Abstract: A drainage system comprises a drainage passage for a drain water, a pump for pumping up the drain water from the drainage passage to a drain portion which is arranged above the drainage passage, and a storage tank which has an inlet connected to the drainage passage to receive the drain water therethough from the drainage passage into the storage tank, and a height of the inlet is higher than that of the drainage passage and lower than that of the drain portion so that an ascent of upper surface of the drain water from the drainage passage is restrained after the drain water ascends to the inlet from the drainage passage.

Abstract: A sub-surface irrigation system includes a conduit connected to a water supply. A plurality of fluid dispenser units are connected to a conduit or conduits. Each of the fluid dispenser units includes a connector interconnected at one end to the interior of the conduit. The other end of the connector is coupled to a drip emitter positioned in an elongated casing. The elongated casing has an enlarged opening at one end and a reduced opening formed at the other end. Tubing interconnects the other end of the connector to the casing. The drip emitter is positioned in the tubing adjacent the casing reduced opening end. In a different invention, the casing extends up to the surface of the ground, so that inspection may be made relative to the operativeness of the drip emitter.

Abstract: The subject invention is a water retrieval system for a field irrigation system and comprises a water source, from which water is drawn for the irrigation process, and an intermediate reservoir in which water is stored, a delivery system to the field to be irrigated, with vertically extendable irrigation sprinklers strategically placed in the fields and a return irrigation system. The vertically extendable irrigation sprinkler members are controlled by remote water pressure flow or other automatically actuated means.

Abstract: A system consisting of multiple independent units each of which includes two standard fire hydrant connections located on two riser pipes and an interconnecting underground pipe providing a means for drafting tide, lake or river water from a streetside conneciton. Any pumper/tanker truck can thus connect a suction hose to the streetside riser and draft water through a second suction hose with one end connected to the riser at a bulkheaded waterside location and the other end equipped with a strainer is lowered into the water source. Standard lengths of fire hose suffice at both water and streetside connections when the water is bulkheaded and water level variations are sufficiently small that the lift capability of the pump is not exceeded. Pumping many begin when connections are complete. Backflushing with fresh water carried on the pumper/tanker may be performed if the pump is not well sealed and pumping begins after backflushing is complete and flow direction is reversed.

Abstract: Sprinkler head mounting system for connecting a sprinkler head to a horizontal water supply pipe in an irrigation system (e.g., an agricultural irrigation system). In one embodiment the mounting system includes (a) a U-shaped tubular member connected to the water supply pipe, (b) a flexible tubular member coupled to the U-shaped member, (c) a conduit having inlet and outlet portions, (d) a riser connected to the outlet portion of the conduit, and (e) a counter-weight carried by the conduit for balancing the weight of the riser and sprinkler head. The mounting system prevents vibration from the sprinkler head from being transmitted to the water supply pipe.

Abstract: A riser assembly for a sub-surface irrigation and drainage system is disclosed having a molded, housing defining a generally rectangular, elongated cavity. A divider within the housing divides the cavity into an upstream chamber and a downstream chamber. A drainage opening and a weir opening are defined by the divider, and slidable gate valves are disposed over each opening. By adjusting the positions of the gate valves, the upstream water level cable may be readily adjusted.

Abstract: A valve having a hollow body, an inlet and outlet for supplying and discharging pressured liquid, the valve body has a normally open top and a closure is provided to close said open top when positioned over the top opening and held in place by pressure of liquid supplied to the body, a closed air chamber communicates with the interior valve body and is arranged to hold compressed air therein.

Abstract: The decant 2 of a tailings dam comprises a pipe which is formed as a coil with turns 4 which are axially spaced apart one above the other. The end of the bottom turn is connected to a laterally extending water outlet pipe 6 which leads out of the tailings dam and the end of the top turn 7 is open and forms an inlet for the flow of water through the decant out of the dam. The coil is preferably in the form of a conical spiral and the turns are of such a size in relation to the cross-sectional area and wall thickness of the pipe from which they are formed that the coil is compressed axially without overstressing the pipe as, in continued use of the dam, tailings are consolidated around the decant and the decant is gradually extended upwards turn after turn.

Abstract: Valve apparatus for controlling the flow of irrigation water includes a valve plate in the irrigation water line, and a piston connected to the valve plate and movable in a cylinder, with fluid pressure in the cylinder opposing the movement of the valve plate to control the flow of irrigation water from the irrigation line.

Abstract: A low pressure, trickle irrigation system and a method of irrigating utilizing the system are provided. The irrigation system includes a head control device for controlling the head of water providing pressure to the system with a water inlet to the head control device, and a pump operatively connected to the water inlet. A buried, generally horizontal main line is operatively connected to the bottom of the head control device, the main line of relatively thin-wall large diameter PVC pipe. A plurality of lateral lines are provided above the main line directly connected to the main line and also buried underground, and extending generally horizontally generally perpendicular to the main line and composed of PVC pipe having a diameter smaller than that of the main line.

Abstract: In a system for leaching septic effluent from a source thereof, a first leach field has an input, a porous bed and means for distributing effluent from the input throughout the bed. A second leach field similarly has an inlet, a pervious bed and means for distributing effluent from that inlet throughout the pervious bed. Distribution means, having an intake coupled to the source, selectively feeds the effluent only to the input until the effluent level in the first field reaches a predetermined depth. Thereafter, the effluent is automatically fed to the inlet of the second leach field. The principle of operation is extended to the use of a third or more leach fields, the distribution means selectively feeding the effluent to the entrance to the third field only after the effluent in the second field reaches a preselected depth and so on.