Abstract: A method of manufacturing a cast article including a frame that in use of the article defines an aperture; and a further component that is in use retained moveably captive relative to the frame. The method casts the further component and respective first and second frame members, the further component and the frame members being securable together to form the article, and subsequently assembles the frame members and the further component together to form the article. A gully grate results from practicing the method.

Abstract: An installation to assist in water usage of rainwater which has a number of take-offs positioned along a kerb along-side a road where these are separately connected to respective inground chambers filled with particulate material to encourage root access from trees in the vicinity.

Abstract: An improved grate 601 is made from a plurality of elongate grate pieces 602, each grate piece 602 having a body 603 with a first end 604 and a second end 605. Each grate piece 602 has the first end 604 angled with respect to the body 603 and the second end 605 angled with respect to the body 603. When the first end 604 of a grate piece 602a is welded to the first end of an adjacent grate piece 602b, and the second end 605 of the grate piece 602a is welded to the second end of the adjacent grate piece 602b so as to form the grate 601, a gap is formed between the respective bodies of the grate pieces 602 to permit the drainage of liquid between the grate pieces. By varying the angles at which the grate pieces 602 are welded together sections of grate with both horizontal and vertical curvature can be formed.

Abstract: A curb covering device for covering a portion of a curb featuring a generally flat panel; a first folding line, a second folding line, and a third folding line, wherein the first folding line is positioned about halfway between the third side edge of the panel and the fourth side edge of the panel, the second folding line is positioned between the first folding line and the fourth side edge of the panel, and the third folding line is positioned between the third side edge of the panel and the first folding line. The folding lines function to allow the panel to be folded over the portion of the curb.

Abstract: A storm water filtration apparatus, at the curb inlet for a storm drain, which prevents debris and pollutants from entering the storm drain system. Water passes through the filter at an upward angle. The filter does not require replacing for maintenance, and it continues to allow water to flow into the storm drain system even when the filter is full of trash, leaves, debris, and/or other pollutants.

Abstract: System and apparatus for filtering drainage which includes a configurable and adjustable rigid frame, hanger support structures adapted to contact a surface of a drainage structure, and a sediment bag. The frame may be adjusted or configured by modifying the location of connecting fasteners and/or by altering the orientation of frame components. Additional embodiments provide for an overflow gap comprising a vertical distance between an above grade surface of a drainage structure and the rigid frame, wherein the overflow gap is capable of allowing runoff to bypass the sediment bag when the sediment bag is obstructed. A configurable lifting tool device adapted to lift inlet grates and inlet filter devices includes a lifting bar, a plurality of connectors, a plurality of lifting arms, and a plurality of lifting hooks adapted to contact a grate and/or an inlet filter device lifting bar.

Abstract: A drain grate filter assembly having a filter sheet member, wedging anchors and mechanical fasteners, whereby the assembly is connected to a drain grate by inserting wedging anchors into the apertures of the grate, placing the filter sheet member atop the grate and inserting fasteners through the filter sheet member and into the wedging anchors.

Abstract: A restrictor plate assembly is disclosed. The assembly is adapted for being positioned within a catch basin throat so that the throat extends rearward of the assembly. The assembly has a longitudinally extending restrictor plate and a restrictor plate securing system, which includes a first clamp arm, pivotally positioned against the restrictor plate, for engaging a first throat surface of the catch basin; a second clamp arm pivotally positioned against the restrictor plate, for engaging a second throat surface of the catch basin, the second throat surface opposing the first throat surface; and an urging member which simultaneously urges the first and second clamp arms against the first and second throat surfaces, respectively.

Abstract: A catch basin configured to filter water by way of a matrix filter and a filter pouch. If the matrix filter should become clogged, a bypass weir provides means of bypassing the matrix filter to prevent the catch basin from clogging.

Abstract: A trench drain assembly including a flow channel and a frame for supporting the channel in a trench. Sidewalls of the frame have a gradually increasing height between ends of the frame so that the frame creates a gradual slope for the assembly to properly drain. In addition, sidewalls of the frame include spaced lugs that extend outwardly and sidewalls of the channel include spaced lugs that extend inwardly to create an interference fit with the lugs of the frame so that the channel can be easily attached to the frame. During assembly, the frame is lowered onto the channel so that the lugs of the frame are received between the lugs of the channels and the frame is then slid with respect to the channel until the lugs of the frame are positioned below the lugs of the channel to secure the frame to the channel.

Abstract: A street curb filter apparatus can be attached to a street curb side adjacent a manhole to collect storm water runoff from the curbside and direct the collected storm water through a filter basket. The street curb filter has a street curb shelf with a water channel on the surface thereof and filter basket supporting arms. The filter basket supporting arms are positioned to receive collected storm water runoff from the water channels in the street curb shelf. The filter basket is shaped to fit into a storm water manhole opening and is removably attached to the street curb shelf filter basket arms to receive storm water runoff from the water channeling surface.

Abstract: The present invention relates to a screen lock-unlock system for automatically locking and unlocking a screen that is within a fluid channel wherein the screen is rotatable relative to the channel from closed to open. The system includes an actuator comprising a flapper and a trigger, wherein the flapper is rotatably connectable to the back of the screen. The flapper is operably connected to the trigger for moving the trigger. And, the system is further summarized, according to one aspect, as follows. It includes a lock bar wherein the lock bar is rotatably attachable to a screen support structure, the lock bar being rotatable by movement of the trigger. The lock bar intercepts the rearward arc path of a blockable part (such as a flange extending laterally from the screen). The flapper is located and oriented with respect to the closed screen for at least part of the flapper to be rotatable in response to pressure from impact fluid.

Abstract: A drainage system grate assembly for covering and allowing fluid passage into a watercourse includes: a crossbar having a plurality of spaced-apart upstanding knuckles defining a plurality of spaced-apart channels therebetween, each of the knuckles having a pin-receiving hole; a plurality of tread bars positioned in the channels between the knuckles of the crossbar, each tread bar having a pin-receiving hole axially aligned with the pin-receiving holes of the knuckles; and a pin positioned within pin-receiving holes in the knuckles and the tread bars, to secure the tread bars in the crossbar.

Abstract: A water drainage system having an elongated housing constructed from a plurality of identical subhousings which are aligned end to end. The housing is constructed of a flexible material and includes an elongated longitudinally extending interior chamber and at least one inlet open to a top of the housing and the chamber. A drainage pipe is attached to the housing and has one end open to the chamber and its other end at a location which dissipates water collected within the housing chamber.

Abstract: A cover grating for a drainage channel or a similarly hollow body which can be installed in the ground is presented, wherein the cover grating is produced in a single piece and more particularly from a sheet metal strip, comprising at least two longitudinal webs extending on the underside of the cover grating and inlet slots formed in the cover grating between these longitudinal webs and comprising transverse webs resulting from the slot forming operation and extending on the lower side of the cover grating wherein the transverse webs are provided at each of their end regions with at least one receiving projection which at least partially engages in to a respective complementarily formed receiving slot in the longitudinal web.

Abstract: A surface drainage structure formed above a subgrade may include an elongate drain conduit disposed partially within the subgrade. The elongate drain conduit may define at least one drain slot extending through a wall thereof. The structure may include a pavement layer with an exposed top surface and a drainage channel extending therefrom. The drainage channel may be in fluid communication with the drain slot of the elongate drain conduit. A method of forming the surface drainage structure includes placing the elongate drain conduit in the subgrade, forming the pavement layer, cutting an upper channel along the elongate drain conduit, and cutting a lower channel and the drain slot in the elongate conduit.

Abstract: A drain grate filter assembly having a filter sheet member, wedging anchors and mechanical fasteners, whereby the assembly is connected to a drain grate by inserting wedging anchors into the apertures of the grate, placing the filter sheet member atop the grate and inserting fasteners through the filter sheet member and into the wedging anchors.

Abstract: A drainage system grate assembly for covering and allowing fluid passage into a watercourse includes: a crossbar having a plurality of spaced-apart upstanding knuckles defining a plurality of spaced-apart channels therebetween, each of the knuckles having a pin-receiving hole; a plurality of tread bars positioned in the channels between the knuckles of the crossbar, each tread bar having a pin-receiving hole axially aligned with the pin-receiving holes of the knuckles; and a pin positioned within pin-receiving holes in the knuckles and the tread bars, to secure the tread bars in the crossbar.

Abstract: A slotted drain having a first channeled half having a first engaging structure and a second channeled half having a second engaging structure mating within the first engaging structure is disclosed. The first channeled half can define a cantilever snap-fit recess and the second channeled half can comprise a cantilever snap-fit protrusion. A slot is formed when the first and second channeled halves are joined. The slot is adapted to receive a liquid variant and the slotted drain is adapted to receive the liquid from the slot into the first and second channeled halves. The slotted drain may optionally include a concrete pass-through port, a rebar clip, bedding feet and/or securement ribs. A method of assembling a slotted drain is also disclosed.

Abstract: An apparatus for reducing pollution in wastewater that collects in a catch basin is disclosed. The apparatus includes a hood affixed to an interior wall of a catch basin over an outlet, and a skirted boom adjacent to at least a portion of said hood and fixed relative to the hood. The skirted boom includes an upper portion and a skirt extending down from the upper portion. The skirted boom is installed so that the upper portion of the skirted boom is adjacent to said hood at the static water level in the catch basin and the skirt extends downward, preferably below the bottom of the hood. A tether assembly for installing the apparatus and a method of using the same is further disclosed.

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 asymmetric slot drain comprises a channel element and a throat element having two walls which extend upwardly from a channel opening of the channel element. The throat element is offset towards one-side of the channel element. Slot drain apparatus which comprises such an asymmetric slot drain and an access/outlet box is also provided. Slot drain apparatus which comprises such an asymmetric slot drain and an end cap adapter is also provided.

Abstract: An adjustable height drain has an elongate base element and an elongate drain element. The elongate base element has walls extending upwardly from the elongate base element. The elongate drain element has a top surface supported by downwardly extending walls, and the top surface has a plurality of apertures enabling water to drain through the top surface. First interlocking elements are vertically spaced from each other on the upwardly extending walls, and second interlocking elements are spaced apart from each other on the downwardly extending walls, enabling the elongate drain element to engage the elongate base element in either a first position or a second position, adapting to change in surface elevation.

Abstract: A flocculate dosing tray apparatus for placement in a storm water drain inlet under the inlet grate captures water entering the storm water drain inlet and dispenses a flocculate into the water for treatment of the interior storm water as the storm water enters the storm water drain system.

Abstract: A device for restricting flow through a curb inlet opening defined in a street storm drain by secure positioning a face plate extending thereover. Multiple flow slots are defined extending through the face plate to allow limited flow therethrough. The face plate is securable to the drain by mounting apparatus which includes one or more mounting brackets along with an engagement device attachable to the flow limiting slots and the brackets to hold the face plate in position extending over the curb inlet opening. Mounting brackets can have teeth for engaging storm drain for enhanced securement therewith. The flow restricting slots are preferably radially arranged with respect to one another and can include lateral slots further engageable with the mounting bracket to prevent rotation thereof during tightening thereof. Conical washers can extend over the head of mounting bolts for protection thereof.

Abstract: A first filter basket (20) sits down into a catch basin (10) and has an upper flange (24) that rests on a shoulder (14) provided in the catch basin (10) for supporting a grate (16). The filter basket (20) has expanded metal side and bottom walls which are adapted to pass liquid and catch particulate material larger in size than the wall openings. A geo-textile liner (42) is optionally positioned inside of the filter basket (20). The liner (42) is supported on a lower rim flange (26). Posts (40) on the rim flange (26) extend upwardly through openings (66) in marginal portions of the liner (42). A smaller second filter basket (72) is optionally supported inside the larger first filter basket (20). An absorbent pillow (90) may be positioned between the bottoms of the two filter baskets (20, 72) to catch and absorb oils and greases that are in the liquid that enters the catch basin (10).

Abstract: A concrete structure for replenishing an aquifer and a method for constructing the same is provided. The structure is comprised of a pavement layer with surface drains that extend through the pavement layer and into an aggregate leach field. The leach field includes leach lines spanning the leach field. An aggregate drain extends from the leach field into a sand lens. Precipitation which falls upon the structure thus flows through the surface drain, absorbed into the aggregate leach field, and transported to the aggregate drains by way of aggregate leach lines. The water is then absorbed into the sand lens, ultimately replenishing the aquifer. Existing conventional pavement structures are retrofitted by the removal of a section of the pavement, and filling the same with porous concrete.

Abstract: A protection device for a side entry pit, device having a frame to clamp to the exposed edge of the cover of the pit, and a screen of chains attached to the frame and extending beneath the opening of the pit to prevent trash from entering the pit. The protection device also includes a screen to prevent debris such as dirt and gravel entering the pit, the device including a wire mesh supporting a material such as filter foam to prevent the debris entering the pit, while permitting the passage of water therethrough.

Abstract: A storm drain relief channel for providing fluid/debris access from the surface of a road to the interior portion of a catch basin including a rigid box structure includes a substantially-hollow channel structure disposed adjacent to the rigid box structure of a curb inlet, the substantially-hollow channel structure having a first end defining a first opening and a second end defining a second opening, wherein the first end is configured to be disposed adjacent to and substantially flush with, and in fluid/debris communication with, the surface of the road and the second end is configured to be disposed one of adjacent to and within, and in fluid/debris communication with, the interior portion of the curb inlet.

Abstract: A roadway or other transport corridor infiltration system which collects runoff while allowing for the easily removal of litter from its surface. The infiltration system comprises at least the edge surface of the roadway or other transport corridor being formed by a plastics grid structure having at least its upper surface formed by an array of alternate openings and support members, such that water can permeate therethrough. An infiltration layer is located at least below and in communication with said grid structure, filled with aggregate material, which is larger in cross-section than the width of the openings of said grid structure. A geotextile wrapped water permeable infiltration tank located below and in communication with said infiltration layer, such that runoff passes through the grid structure into the infiltration layer and into the permeable infiltration tank, where the water is stored and/or flows back into the soil through the walls of the tank and the geotextile.

Abstract: A drainage catch basin is formed from a rectangular trough with a planar upper rim defined by at least two opposite sidewalls and includes at least one inner wall forming a lower rim to define the gutter opening for flush mounting with the curb. The basin is covered by a top with a planar bottom that preferably includes a central circular manhole cover. The top is preferably formed by first providing a mold having a bottom and side frame of steel plates reinforced by a galvanized steel nosing and crossing rebar. The mold is then filled by concrete casting while installed on the catch basin trough to match the exterior color and/or finish of the adjacent sidewalk, street and/or curb.

Abstract: System and apparatus for filtering drainage which includes a configurable and adjustable rigid frame, hanger support structures adapted to contact a surface of a drainage structure, and a sediment bag. The frame may be adjusted or configured by modifying the location of connecting fasteners and/or by altering the orientation of frame components. Additional embodiments provide for an overflow gap comprising a vertical distance between an above grade surface of a drainage structure and the rigid frame, wherein the overflow gap is capable of allowing runoff to bypass the sediment bag when the sediment bag is obstructed. A configurable lifting tool device adapted to lift inlet grates and inlet filter devices includes a lifting bar, a plurality of connectors, a plurality of lifting arms, and a plurality of lifting hooks adapted to contact a grate and/or an inlet filter device lifting bar.

Abstract: Disclosed herein is a soil inflow prevention apparatus in which an angular-rotation opening/closing plate is adapted to be inclined within a predetermined angle by virtue of opening stoppers to prevent a rear portion of the opening/closing plate from being excessively lowered in the beginning that an inflow amount of sewage increases due to rainfall, thereby preventing soil from entering an intercepting sewer in the beginning of an inflow of sewage.

Abstract: A cover grating for a drainage channel or a similarly hollow body which can be installed in the ground is presented, wherein the cover grating is produced in a single piece and more particularly from a sheet metal strip, comprising at least two longitudinal webs extending on the underside of the cover grating and inlet slots formed in the cover grating between these longitudinal webs and comprising transverse webs resulting from the slot forming operation and extending on the lower side of the cover grating wherein the transverse webs are provided at each of their end regions with at least one receiving projection which at least partially engages in to a respective complementarily formed receiving slot in the longitudinal web.

Abstract: An adjustable drain has an elongate base element and an elongate drain element. The elongate base element has upwardly extending walls extending upwardly from the elongate base element. The elongate drain element has a top surface supported by downwardly extending walls, and the top surface has a plurality of apertures enabling water to drain through the top surface. First interlocking elements are vertically spaced from each other on the upwardly extending walls, and second interlocking elements are spaced apart from each other on the downwardly extending walls, enabling the elongate drain element to engage the elongate base element in either a first position or a second position, adapting to either smaller or larger pavers.

Abstract: The invention relates to a tree grille system for covering tree grates. Said system consists of grille sections (1), which are interconnected by couplings (7) to form a self-supporting tree grille. The couplings (7) consist of two fixed coupling parts (8) configured on the grille sections (1) and a coupling part (9) that can be inserted between the other parts and then rotated into a locking position. An arc-shaped rib (18) is configured on the underside of the fixed coupling parts (8), the outer peripheral face (21) of said rib being configured as a ramp-type clamping surface (23). One section of said surface (23) is provided with undulating fluting (24). When the displaceable coupling part (9) is rotated into the locking position, teeth (34) that are formed on said part slide over the fluting (24), causing the displaceable coupling part (9) to be locked by a friction and positive fit in the locking position.

Abstract: A frame for retaining a grate over a trench for directing storm water to subterranean basins includes a frame that is embedded in the concrete surrounding the trench. The frame includes a support member, including a vertical support that is sized and dimensioned to abut the wall of the trench, and a horizontal flange that is cantilevered over the trench to receive a grate member. The frame further includes a reinforcement member that runs parallel to the length of the support member, and a plurality of rib members that couple the reinforcement member to the support member. The reinforcement member and rib members are embedded in the pavement adjacent the trench, to provide a back structure for reinforcing the support of the grate.

Abstract: An improved grate 601 is made from a plurality of elongate grate pieces 602, each grate piece 602 having a body 603 with a first end 604 and a second end 605. Each grate piece 602 has the first end 604 angled with respect to the body 603 and the second end 605 angled with respect to the body 603. When the first end 604 of a grate piece 602a is welded to the first end of an adjacent grate piece 602b, and the second end 605 of the grate piece 602a is welded to the second end of the adjacent grate piece 602b so as to form the grate 601, a gap is formed between the respective bodies of the grate pieces 602 to permit the drainage of liquid between the grate pieces. By varying the angles at which the grate pieces 602 are welded together sections of grate with both horizontal and vertical curvature can be formed.

Abstract: A catch basin curb inlet opening cover is a steel plate member which includes a main segment having at least one first opening whereby fluid may pass through said at least one first opening into the curb inlet opening when said plate member is positioned in its intended place, and a bend portion. The bend portion is formed from the main segment by deforming a respective section of the main segment. When in place across the curb inlet opening, the bend portion extends into the curb inlet opening. A respective surface of the bend portion is in sufficiently close proximity to either or both of the left edge or the right edge of the curb inlet opening so that the plate member will resist horizontal movement occasioned by being struck by a snow plow or other heavy duty street equipment. Adjusting means are described which adjust the length of the bend portion to accommodate different inlet openings. The main segment includes a further opening adapted to permit the viewing of a precautionary badge.

Abstract: A drain filtration apparatus including a catch basin and a filter housing. The catch basin includes a conduit extending upward from a drain opening in the catch basin, the upper vertical edge of the conduit being lower than the opening of the catch basin. The filter housing is removably securable to the upper portion of the conduit and includes a cover having an upper surface sufficient to cover the upper opening of the conduit as well as an elongated circumferential portion having openings which extend downwardly from the cover.

Abstract: A drain grate system can be installed in a curbside or storm drain to block the passage of debris while allowing liquid to flow into the drain. The drain grate system can open in response to a high flow rate to allow liquid and debris to flow into the drain. A locking mechanism can maintain the drain grate system in a closed and locked position and can unlock in response to a predetermined amount of force of a fluid flow.

Abstract: A two-part grate assembly for a channeled drain trough. The grate assembly has a grate frame that receives a removable grate section. The grate frame has lugs with vertical projections extending therefrom that define securing recesses that assist in aligning and securing the grate frame atop a drain trough. Additionally, the present invention is directed to the use of an alignment bar that prevents the grate section from sliding out of operating position within the grate frame by restricting lateral movement of the grate section. Further, the present invention is directed to a method of providing a grate assembly for a channeled drain trough having a grate frame that is adapted to receive a removable grate section.

Abstract: A concrete structure for replenishing an aquifer and a method for constructing the same is provided. The structure is comprised of a pavement layer with surface drains that extend through the pavement layer and into an aggregate leach field. The leach field includes leach lines spanning the leach field. An aggregate drain extends from the leach field into a sand lens. Precipitation which falls upon the structure thus flows through the surface drain, absorbed into the aggregate leach field, and transported to the aggregate drains by way of aggregate leach lines. The water is then absorbed into the sand lens, ultimately replenishing the aquifer. Existing conventional pavement structures are retrofitted by the removal of a section of the pavement, and filling the same with porous concrete.

Abstract: A modular curb inlet filter apparatus having an internal axial tube member on which are disposed at least two disc spacers, which in turn support a cylindrical mesh frame member, which in turn supports a tubular filter fabric. Wedge anchors composed preferably of a compressible polymer foam are provided with anchor bores of sufficient diameter to receive the ends of the cylindrical mesh frame member therein, the anchor bores being disposed near the base of the wedge anchors such that the curb inlet filter inlet apparatus will be seated close to surface of the curb inlet base when positioned within the curb inlet. Preferably the wedge anchors are provided with a base scuff plate made of a durable polymer material to prolong their use life. A short silt flap or skirt depends from the filter fabric, the silt flap extending the approximately the length of the curb inlet filter apparatus to seal any gap beneath the curb inlet filter apparatus and the base of the curb inlet.

Abstract: The invention relates to a water collecting structure 1 capable of positively capturing flowing water which may form a shooting flow. The water collecting structure 1 of the invention includes: a guide member 23 including a water channeling surface 23a inclined at a greater angle than that of a water-flow slope of a water-flow surface; and a plurality of flow straightening plates 24 extended along a flow direction of the guide member 23 and juxtaposed in a direction orthogonal to the flow direction. The flow straightening plate 24 includes a planar or curved lateral side 24a which cooperates with the water channeling surface 23a to define a substantially rectangular small channel S and which stands vertically to the water channeling surface 23a or inclined relative to the water channeling surface to widen the small channel toward top.

Abstract: A curb opening filter apparatus is provided for removably attaching over a curbside opening for a storm drain. The filter apparatus has a frame which can be interconnected with similar frames to adjust for different size storm drain openings. The curb opening filter has a system for vertically attaching a filter apparatus over the curbside opening.

Abstract: The invention relates to an integrated belowground vault with filter catch basin, that allows the runoff water to enter into a belowground two-part vault passing through a commercially available replaceable filter before being transferred out to the sewer, Rood control system or out through a French drain consisting of a cavity below the device that is filled with drain gravel. A layer of filter cloth can optionally be placed over the drain gravel. This device will be manufactured in variety of sizes and shapes and made from several different materials. The device has the unique ability of being capable of filtering low flow water runoff while allowing high volume to pass through with the added benefit of not retaining water that can become a mosquito breeding ground.

Abstract: A surface water drainage system according to the present invention includes a structure that can be installed in the ground, and a cover that can be laid onto an upper edge of the structure. Fixation devices that are attached to the cover include a locking system in a form of elastic hook elements fixed to edges of the cover that can be brought into snap-on engagement with other locking system on the structure in order to retain the cover on the structure.

Abstract: Apparatus for filtering out and collecting debris at a storm drain includes upper and lower assemblies, each including a frame member and a filter member. Water passing through or alongside the filter member of the upper assembly is directed into the filter member of the lower assembly.

Abstract: A first filter basket (20) sits down into a catch basin (10) and has an upper flange (24) that rests on a shoulder (14) provided in the catch basin (10) for supporting a grate (16). The filter basket (20) has expanded metal side and bottom walls which are adapted to pass liquid and catch particulate material larger in size than the wall openings. A geo-textile liner (42) is optionally positioned inside of the filter basket (20). The liner (42) is supported on a lower rim flange (26). Posts (40) on the rim flange (26) extend upwardly through openings (66) in marginal portions of the liner (42). A smaller second filter basket (72) is optionally supported inside the larger first filter basket (20). An absorbent pillow (90) may be positioned between the bottoms of the two filter baskets (20, 72) to catch and absorb oils and greases that are in the liquid that enters the catch basin (10).