Abstract: A connector pipe screen device configured for mounting on a water conduit includes an expandable ring mounting assembly, the expandable ring mounting assembly being configured to be engagable with and securable to the conduit near or at an axial end of the conduit at which a conduit opening is disposed, a back plate mounted on the expandable ring mounting assembly and a front cover mounted on the back plate. The front cover has a perforated portion defining a multiplicity of openings formed therein to allow water to pass through the perforated portion and to prevent debris carried by the water from passing through the perforated portion.

Abstract: An expansion ring mountable in a storm drain for supporting a filtering apparatus includes a ring-shaped expansion member having an adjustable diameter which is cut transversely to define two open end portions thereon which face each other and which are separated from each other by a predetermined distance to define a gap therebetween. A wedge assembly is positioned at the gap between the open end portions of the expansion member and is adjustable to increase the diameter of the expansion member. When the wedge assembly is adjusted to increase the diameter of the expansion member, the expansion member tightly engages a side wall of a portion of the storm drain in which the expansion ring is mounted to secure the expansion ring, and a filtering apparatus supported thereby, in a desired position.

Abstract: A device for detecting the presence of hydrocarbon fluid in runoff water includes an outer canister and a cartridge situated within the outer canister. The cartridge includes a pre-filter, at least one containment vessel, a diffuser/separator member situated within the containment vessel, a hydrocarbon fluid accumulator and an electronic circuit. The diffuser/separator member slows the flow of runoff water entering the containment vessel so that oil in the runoff water separates from and rises to the surface of the water where it accumulates in the hydrocarbon fluid accumulator. A sensor situated in the hydrocarbon fluid accumulator detects the accumulated oil and sends a signal to the electronic circuit which, in turn, closes a valve and prevents water from flowing through an egress opening in the outer canister.

Abstract: A stormwater treatment system includes water treatment media that defines a helical flow path within a conduit. The water treatment media may include a plurality of helical water treatment media components that are constructed and arranged to seal against an inside surface of the conduit. The individual helical water treatment media components may be installed in situ within the conduit when the conduit is positioned within a chamber having an access opening, and periodically removed and replaced by passing the components to the access opening. The components further may have a flexible frame, which allows the water treatment media to dynamically adjust to swelling of the filtration media and other forces that may occur during use. The performance of the system may be adjusted by adjusting the helical pitch of the helical water treatment media components.

Abstract: A stormwater treatment system includes water treatment media that defines a helical flow path within a conduit. The water treatment media may include a plurality of helical water treatment media components that are constructed and arranged to seal against an inside surface of the conduit. The individual helical water treatment media components may be installed in situ within the conduit when the conduit is positioned within a chamber having an access opening, and periodically removed and replaced by passing the components to the access opening. The components further may have a flexible frame, which allows the water treatment media to dynamically adjust to swelling of the filtration media and other forces that may occur during use. The performance of the system may be adjusted by adjusting the helical pitch of the helical water treatment media components.

Abstract: A method of mounting a grate adapter unit beneath a stormwater collection grate includes steps of providing a grate adapter unit having a plurality of outwardly extending mounting flanges, each mounting flange being adapted to fit a different size commercially common stormwater collection grate. The grate adapter unit is trimmed, either at the factory, at the contractor's facilities or at the installation site, at the desired location to select a desired one of the mounting flanges that is appropriate for the collection grate to which the grate adapter is being fit. The grate adapter unit is then mounted beneath the stormwater collection grate using the selected mounting flange. A stormwater remediation unit may be pre-mounted to a lower end of the grate adapter unit or mounted to the lower end after installation.

Abstract: A system for treating runoff water from a plastic container includes a tray having at least one drainage hole defined in a lower surface thereof. Remediation media is positioned within the tray for absorbing at least one nutrient from the runoff water. A container support member may be connected to the tray for supporting a number of potted plants above the space within the tray that is occupied by the remediation media.

Abstract: A method of mounting a grate adapter unit beneath a stormwater collection grate includes steps of providing a grate adapter unit having a plurality of outwardly extending mounting flanges, each mounting flange being adapted to fit a different size commercially common stormwater collection grate. The grate adapter unit is trimmed, either at the factory, at the contractor's facilities or at the installation site, at the desired location to select a desired one of the mounting flanges that is appropriate for the collection grate to which the grate adapter is being fit. The grate adapter unit is then mounted beneath the stormwater collection grate using the selected mounting flange. A stormwater remediation unit may be pre-mounted to a lower end of the grate adapter unit or mounted to the lower end after installation.

Abstract: A storm sewer insert for use in a storm water drainage system includes a collection basin that has an upper inlet opening, a lower outlet opening and at least one overflow bypass opening defined therein. A filter assembly is preferably positioned in the lower opening of the collection basin for filtering storm water that is held in the collection basin. Advantageously, adjustable mounting structure is provided for mounting the collection basin to an inlet opening of a storm sewer or catch basin. In addition, a mosquito barrier is preferably provided for reducing mosquito passage through the bypass opening.

Abstract: A storm sewer insert includes a mounting assembly that is constructed and arranged to be mounted to a storm sewer system and a filter bag that is fabricated from a mesh material. The filter bag is releasably attached to the mounting assembly by a plurality of suspension elements that suspend the filter bag from the mounting assembly. The storm sewer insert may be provided with a covered bypass system for permitting excess storm water to bypass the filter bag in a manner that will facilitate the capture of floatable material that may be contained within the excess storm water.

Abstract: A storm sewer insert includes a mounting assembly that is constructed and arranged to be mounted to a storm sewer system and a filter bag that is fabricated from a mesh material. The filter bag is releasably attached to the mounting assembly by a plurality of suspension elements that suspend the filter bag from the mounting assembly. The storm sewer insert may be provided with a covered bypass system for permitting excess storm water to bypass the filter bag in a manner that will facilitate the capture of floatable material that may be contained within the excess storm water.

Abstract: An effluent treatment apparatus, and associated methods of use, are provided for treating in a closed-loop configuration a volume of effluent contained in a holding vessel. The apparatus includes one or more treatment tank units arranged to hold a volume of molecular filtering material capable of removing one or more toxic contaminants from the effluent, al least in part, as the effluent contacts the surface areas of the molecular filtering material within each tank unit. A pump unit is provided to draw effluent from the holding vessel and deliver the effluent to selected tank units to effect treatment. The apparatus further includes fluidic conduit structures to fluidically couple the holding vessel, a pre-filter, the pump, and each selected tank unit.