Abstract: Stormwater management systems, methods, and apparatus for containing and filtering runoff may be provided. In one implementation, a stormwater management crate for managing stormwater runoff may be provided. The stormwater management crate may include a top plate having a first plurality of support column attachments and one or more support column assemblies located below the top plate; the one or more support column assemblies being affixed to the top plate at the support column attachments. The stormwater management crate may further include an intermediate plate may be located below the top plate and above the bottom plate. The intermediate plate may have a third plurality of support column attachments. The intermediate plate may be lightweight and may weigh less than one or both of the top plate and the bottom plate.

Abstract: Stormwater management systems, apparatus, and methods for containing and filtering runoff may be provided. In one implementation, a stormwater chamber may be provided. The stormwater chamber may be configured for use with an endcap for connecting a pipe to the stormwater chamber, and the stormwater chamber may include a first end with a scalloped edge portion. The end cap may include a sleeve with an interior projecting edge, an outward projecting edge, a bore shaped to receive a pipe, a first cutout portion at the upper half of the outward projecting edge of the sleeve, and a second cutout at the bottom half of the interior projecting edge of the sleeve. The stormwater chamber may also include a flared end ramp with an inlet end, an outlet end, and a protrusion on the outside of the inlet end that abuts the flared end ramp with the end cap.

Abstract: Disclosed embodiments relate to a water treatment unit for use in a water treatment system. In some embodiments, the water treatment unit may comprise a hollow unit forming an interior volume, a first divider and a second divider, wherein the first divider and the second divider may divide the interior volume into a first compartment, a second compartment, a third compartment and a fourth compartment, an aeration grid, wherein the aeration grid may release oxygen into the interior volume, an aeration grid pipe, wherein the aeration grid pipe may supply oxygen to the aeration grid, and an air lift system, wherein the air lift system may recirculate water within the water treatment system.

Abstract: Weir systems, methods, and apparatuses for containing and filtering runoff may be provided. In one implementation, a modular weir may be used to isolate suspended solids from a flow of water in a stormwater management crate array. The modular weir may include a plurality of weirs configured to isolate the flow of water from the stormwater management crate, a plurality of column grooves along the one or more weirs configured to extend around a plurality of columns in the stormwater management crate, an inlet located at a first end of the plurality of weirs configured to receive the flow of water within the stormwater management crate, and a cap located at a second end of the plurality of weirs configured to contain the flow of water within the modular weir.

Abstract: The disclosed embodiments include a secondary lid for installation in a riser.

Abstract: Stormwater and fluid management runoff systems, apparatus, and methods for containing and filtering runoff may be provided. In one implementation, a stormwater management box for managing stormwater runoff may be provided. The stormwater management box may include a top plate and a base plate having a plurality of spaced apart columns positioned therebetween. The stormwater management box may include one or more side panels positioned between the top plate and the base plate, each side panel comprising a cover. The stormwater management box may also include a truss, the truss running perpendicular to the vertical plane of the one or more side panels and fitting within a vertical space between an upper surface of the bottom plate and a lower surface of the top plate.

Abstract: A manhole assembly comprising a plurality of interconnected longitudinal manhole segments is provided. In an embodiment, the plurality of interconnected longitudinal manhole segments may comprise a first edge comprising a plurality of dowel pins, a second edge comprising a plurality of dowel holes, a curved wall extending between the first edge and the second edge, and a plurality of clip bosses extending periodically along the first edge and the second edge. In another embodiment, the plurality of interconnected longitudinal manhole segments may comprise a plurality of hinges extending periodically along the first edge and the second edge.

Abstract: A manhole assembly comprising a plurality of interconnected longitudinal manhole segments is provided. In an embodiment, the plurality of interconnected longitudinal manhole segments may comprise a first edge comprising a plurality of dowel pins, a second edge comprising a plurality of dowel holes, a curved wall extending between the first edge and the second edge, and a plurality of clip bosses extending periodically along the first edge and the second edge. In another embodiment, the plurality of interconnected longitudinal manhole segments may comprise a plurality of hinges extending periodically along the first edge and the second edge.

Abstract: Stormwater management systems, methods, and apparatuses for containing and filtering runoff are provided. Disclosed embodiments may include a top plate and a bottom plate, the top plate including a first plurality of side panel attachments. Embodiments may include a plurality of support columns between the top plate and the bottom plate. Furthermore, disclosed embodiments may also include one or more arched side panels. Stormwater management crates may be arranged into an array and include side panels of variable heights. The array of stormwater management crates may be further wrapped in sediment impervious material and serve to restrict stormwater flow as part of a stormwater management system.

Abstract: Weir systems, methods, and apparatuses for containing and filtering runoff may be provided. In one implementation, a modular weir may be used to isolate suspended solids from a flow of water in a stormwater management crate array. The modular weir may include a plurality of weirs configured to isolate the flow of water from the stormwater management crate, a plurality of column grooves along the one or more weirs configured to extend around a plurality of columns in the stormwater management crate, an inlet located at a first end of the plurality of weirs configured to receive the flow of water within the stormwater management crate, and a cap located at a second end of the plurality of weirs configured to contain the flow of water within the modular weir.

Abstract: Stormwater and fluid management runoff systems, apparatus, and methods for containing and filtering runoff may be provided. In one implementation, a stormwater management box for managing stormwater runoff may be provided. The stormwater management box may include a top plate and a base plate having a plurality of spaced apart columns positioned therebetween. The stormwater management box may include one or more side panels positioned between the top plate and the base plate, each side panel comprising a cover. The stormwater management box may also include a truss, the truss running perpendicular to the vertical plane of the one or more side panels and fitting within a vertical space between an upper surface of the bottom plate and a lower surface of the top plate.

Abstract: An aeration grid is provided. The aeration grid may comprise a curved body, a plurality of aeration extensions extending from the curved body, wherein each of the plurality of aeration extensions may comprise one or more aeration openings, and a plurality of nesting extrusions extending between the curved body and the plurality of aeration extensions.

Abstract: Stormwater management systems, methods, and apparatus for containing and filtering runoff may be provided. In one implementation, a stormwater management crate for managing stormwater runoff may be provided. The stormwater management crate may include a top plate having a first plurality of support column attachments and one or more support column assemblies located below the top plate; the one or more support column assemblies being affixed to the top plate at the support column attachments. The stormwater management crate may further include a bottom plate having a second plurality of support column attachments located below the support column assemblies. Stormwater management crates may be arranged into an array and include side panels of variable heights. The array of stormwater management crates may be further wrapped in sediment impervious material and serve to restrict stormwater flow as part of a stormwater management system.

Abstract: A corrugated pipe manufacturing cell is configured to produce multiple corrugated pipes in parallel. The manufacturing cell may comprise an extrusion system that is capable of providing multiple independently regulated flows of plastic piping material to multiple die heads. The multiple die heads may feed a set of mold blocks having dual cavities for forming he multiple corrugated pipes. The pipe manufacturing cell may be converted between a first mode for producing large diameter single corrugated pipes, and a second mode for producing smaller diameter, plural corrugated pipes.

Abstract: A plastic leaching chamber is provided and includes a chamber substrate constructed from a PET material and having opposing side base flanges which lie in a horizontal plane and extend lengthwise along the chamber substrate. The chamber substrate includes opposing sidewalls extending upwardly from each of the opposing side base flanges to a top of the chamber substrate and includes a lengthwise center plane which is perpendicular to the horizontal plane. The opposing sidewalls define a plurality of leaching openings having at least one tab slot opening located proximate thereto, and a plurality of louver articles constructed from at least one of a PE and a PP material. Each of the louver articles include a tab which is configured to engage a tab slot opening to securely associate the plurality of louver articles with the chamber substrate to cover the at least one leach opening.