Adjustable, configurable storm inlet filter

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.

BACKGROUND OF THE INVENTION

Water pollution degrades surface waters making them unsafe for drinking, fishing, swimming, and other activities. As authorized by the Clean Water Act, the National Pollutant Discharge Elimination System (NPDES) permit program controls water pollution by regulating point sources that discharge pollutants into waters of the United States. Point sources are discrete conveyances such as pipes or man-made ditches. Individual homes that are connected to a municipal system, use a septic system, or do not have a surface discharge do not need an NPDES permit; however, industrial, municipal, and other facilities must obtain permits if their discharges go directly into surface waters. In most cases, the NPDES permit program is administered by authorized states. Since its introduction, the NPDES permit program is responsible for significant improvements to our Nation's water quality.

The NPDES storm water program called for implementation in two phases; Phase I addressed the most significant sources of pollution in storm water runoff. Phase II addresses other sources to protect water quality. Construction sites that disturb one acre or more of land are required to have coverage under the NPDES general permit for storm water discharges from construction site activities.

The United States Environmental Protection Agency has set forth guidelines for municipalities in the NPDES Phase II Storm Water Rule that outlines best management practices (BMPs) for limiting pollutants in storm water drainage systems. Drainage inlet protection devices help to satisfy the following NPDES Phase II control measures: 1) Construction site storm water runoff control; 2) Post-construction storm water management in new development and redevelopment; and 3) Pollution prevention and good housekeeping for municipal operations.

Inlet protection devices have been developed to address the concerns of construction site storm water runoff. Previous inlet protectors may be composed of injection molded plastic housings with a fixed size and shape and particular dimensions. However, fixed dimension plastic inlet protection devices are expensive to tool and can be overly complex to install and maintain.

Other types of inlet protection devices, such as the Illinois Department of Transportation (IDOT) approved Inlet Filter, are comprised of welded steel angles and channels designed to fit specific drainage structures with fixed dimensions. The steel frames also support a sediment bag which filters the storm water. Various geotextile sediment bag materials, oil absorbent pouches, and other filtration devices can be utilized with the IDOT Inlet Filter. The sediment bag hangs below grade catching storm water runoff and debris as it is washed into the drainage structure.

There are hundreds of different sized curb and catch basin inlets in use throughout the world. There are two primary shapes for curb and catch basin inlets: rectangular and circular. Fixed dimension inlet filters are manufactured to fit one specific size of inlet basin. Furthermore, the fabrication of the welded steel frames is tedious and labor intensive resulting in higher cost levels of finished goods, long lead times, and elevated prices. Contractors typically order and stock fixed dimension size inlet filters relating to specific drainage make and model numbers. Contractors that come into contact with a large number of different types of inlet castings may need to stock a large inventory of inlet filters of varying shapes and dimensions. Additionally, pre-existing roadwork may contain inlets of unknown origin and nonstandard dimensions.

Still other types of inlet protection devices are comprised of geotextile fabric sediment bags that are attached to an existing inlet. For example, these sediment bags may be suspended from straps or chains, which are wrapped around or attached to an inlet grate. Some sediment bags have slots adapted to contain pieces of re-bar used to hold down sides of the sediment bag on the outside of the inlet grates, above grade. Other types of sediment bag inlet protection devices require that the inlet grate be inserted into a geotextile envelope preventing sediment from entering at the surface. These “fabric-only” style sediment bag inlet protectors are more difficult to install and maintain than inlet protectors utilizing a “drop-in” rigid frame supporting a sediment bag.

DETAILED DESCRIPTION OF THE INVENTION

One embodiment of the invention provides for a configurable inlet filter protection device. The configurable inlet filter protection device is comprised of rigid frame rail components with configurable and adjustable dimensions. The frame rail components may be assembled to have the dimension required to fit any inlet opening. Two specific examples provide for frame rail components assembled to have dimensions of 14″ length and 10″ width and dimensions of 24″ length and 12″ width. However, the embodiments of the invention are not limited to those specific dimensions. Rather, embodiments of the invention provide for inlet filter framing systems capable of fitting any and all inlet sizes. The configurable dimensions of the frame rail components allow for the inlet filter protection device to fit the wide array of drainage structures in use throughout the world. In one example embodiment, the frame rail components may be comprised of 11 gauge stamped steel components. The configurable frame rail components form a frame to support a sediment bag used to capture pollutants and/or sediment. The inlet filter protection device may be placed within the dimensions of the inlet and may also contact the inlet or drainage structure for support. More specifically, one example embodiment of the invention is designed to drop in the casting opening and hang suspended from the load bearing lips of the casting beneath the drainage gate. The structure of at least one embodiment of the invention provides an inherent overflow gap vertically spaced below the drainage grate and the top of the sediment bag.

Certain embodiments of the invention may be placed in a typical cast inlet, or any other drainage structure. For example, inlet filter devices may be placed into a plastic or concrete storm drainage structure. In some instances, the inlet filter devices are placed in metal, plastic, or concrete storm drainage structures 20-28 inches in diameter. Another example embodiment may be placed right on the concrete lid of a catch basin, which is typically 24 inches in diameter or a 24-48 inch square opening. In a preferred embodiment of the invention, the dimensions of the inlet filter framing device may be adjusted by a user at the location of the inlet. For example, if the inlet filter device as assembled is larger than an inlet, a user may configure the framing device to accommodate the smaller inlet. In another example, a user may remove an inlet filter framing device, adjust the framing device to increase its dimensions, and fit the inlet filter framing device in a larger inlet.

Additionally, other example embodiments of the invention are configured to drop in rectangular and circular inlet shapes with frame rail dimensions slightly smaller than the clear drainage opening. In some example embodiments of the invention, the frame rails can be adjusted to just less than the clear drainage opening of an inlet casting or any other type of drainage structure. Typically, the frame rails are dimensioned such that there is range of 0.1″ to 1.1″ clearance around the perimeter of the frame structure. A preferred embodiment of the invention provides for 0.5″ of clearance. Other embodiments of the invention provide a funnel flange to collect any runoff falling through the clearance gap and funnel it back through the sediment bag. Embodiments of the invention may be referred to as The FLeXstorm™ Inlet Filter System.

FIG. 1illustrates a rectangular configurable, i.e. adjustable, inlet filter framing system100according to an embodiment of the invention. The rectangular configurable inlet filter framing system100includes corner bracket110, frame rail channels120, lifting brackets130, lifting rails140, and bolts150.

The corner bracket110may be comprised of one or more rigid materials, such as steel. The corner bracket110includes hangers111, hanger support structure112, corner angle113, holes114, and frame rail channel contacts115. In a preferred embodiment, a corner bracket110comprises a hanger support structure112comprising two planar steel surfaces adjoined transversely at angle113. Additionally, the hanger support structure112is adjoined transversely to at least one hanger111. In a preferred embodiment, the hangers111are planar pieces of steel. Hangers111contact the edges of an inlet to support the weight of the rectangular configurable inlet filter framing system100. The hangers111are designed to contact the perimeter of an inlet and allow the configurable rectangular inlet filter framing system100to rest primarily below grade in order to filter liquids and solids entering a drainage system.

Further, hanger support structure112includes a plurality of holes114and a plurality of frame rail contacts115. The holes114are located transversely through the planar surfaces of hanger support structure112. In a preferred embodiment, the holes114located through corner bracket110have the same orientation as the holes124in frame rail120. The frame rail contact115is a rigid structure in contact with hanger support structure112and is adapted to receive a frame rail channel120. Additionally, a frame rail contact115may allow for a frame rail120to be moved in one dimension while limiting movement in two other transverse dimensions. The frame rail contact115may comprise a steel channel adapted to receive a smaller steel channel. Alternate embodiments of corner bracket110may include only one hanger111. Additionally, the angle113is not required to be 90 degrees.

The frame rail channel120includes a first planar surface121, second planar surface122, and holes124. In a preferred embodiment, the frame rail channel120is comprised of steel channel. The first planar surface121is adjoined transversely to two planar surfaces122. The holes124are located transversely through first planar surface121.

The lifting bracket130includes a frame rail contact131, a lifting rail contact132, an angle133, and holes134. The frame rail contact131and lifting rail contact132are rigid structures adjoined transversely and adapted to receive a frame rail120and a lifting rail140respectively. Additionally, frame rail contact131may allow for a frame rail120to be moved in one dimension while limiting movement in two other transverse dimensions. Likewise, lifting rail contact132may allow for a lifting rail140to be moved in one dimension while limiting movement in two other transverse dimensions. The frame rail contact131and lifting rail contact132may comprise steel channel adapted to receive a smaller steel channel or bar. In a preferred embodiment, a lifting rail bracket130may comprise a single piece of steel channel formed at approximately a 90 degree angle. The lifting bracket130includes holes134located transversely through frame rail contact131and the lifting rail contact132. In a preferred embodiment, the holes134located through frame rail contact131have the same orientation as the holes124in frame rail120. Likewise, the holes134located through lifting rail contact132have the same orientation as the holes144through lifting rail140.

The lifting rail140includes a first planar surface141and holes144. The lifting rail is preferably a rigid structure capable of being secured to one or more lifting brackets130. The lifting rail140may be a steel channel or flat piece of steel bar. The holes144are transversely located through the first planar surface141.

The bolts150may be bolts, bolted joints, screws, screw joints, pin joints, rivets, or any other rigid fastener capable of attaching two surfaces together.

The corner brackets110, frame rail channels120, lifting brackets130, lifting rails140, and bolts150are connected to form the rectangular configurable inlet filter framing system100. Specifically, four corner brackets110are oriented to form the four corners of a rectangle. Four frame rail channels120are oriented to form the four sides of a rectangle. In certain embodiments, the four corner brackets110and four frame rail channels120form a square. Two lifting brackets130are oriented in contact with a first frame rail120. Two more lifting brackets130are oriented in contact with a second frame rail120which is parallel to first frame rail120. Two lifting rails140are oriented to contact the two lifting brackets in contact with the first frame rail channel120with the two lifting brackets in contact with the second frame rail channel120.

Bolts150secure the components of the rectangular configurable inlet filter framing system100. More specifically, at least one bolt150connects each frame rail120to a corner bracket110. Additionally, at least one bolt150connects each lifting rail140to a lifting bracket130. In a preferred embodiment, the corner brackets110include a plurality of extruded holes114and are spaced ½″ apart. The preferred embodiment also includes frame rails120which are steel channel lengths with through holes124spaced 1″ apart. The preferred embodiment also includes bolts150which are ¼-20 thread forming fasteners, eliminating the need for washers and nuts on the ¼-20 bolts. The bolts150are threaded through the extruded holes114and124to secure the corner brackets110to the frame rails120. Likewise, the lifting brackets130include a plurality of extruded holes134. The extruded holes134are spaced ½″ apart. The lifting rails140are steel channel lengths with through holes144spaced 1″ apart. Bolts150are threaded through the extruded holes134and144to secure the lifting brackets130to the lifting rails140. In alternative embodiments of the invention, holes114or124may be any opening in the surface of the corner bracket110or the frame rail120. For example, the holes114or124may actually be a slot, through which a pin or bolt may placed into and/or through. The pin or bolt may be secured with a clip or nut to secure it into position.

In a preferred embodiment of the invention, the components of the rectangular configurable inlet filter framing system100provide for a system capable of forming to the dimensions of a wide variety of rectangular inlet shapes. For example, the spacing of the holes114in the corner brackets110and the spacing of the holes124in the frame rails120allow for the corner brackets110and the frame rails120to be secured by bolts150in a variety of configurations. The frame rails120may be 20″ long steel channels while the corner brackets110may have sides capable of receiving 3″ frame rails120. As described above, the extruded holes134in the preferred embodiment are spaced ½″ apart and the through holes144spaced 1″ apart. This allows for inlet filter framing system100width and length adjustments in ½″ increments and up to 5″ per side using only ¼-20 thread forming fasteners150. Additionally, the frame rails120and lifting rails140may be any length of steel channel or bar. If an inlet filter framing system100needs to be adjusted by more than 5″ inches in a dimension to fit a different inlet basin, frame rails120of a different length may be substituted. Likewise, different length lifting rails140may also be substituted. A preferred embodiment of the invention allows for a user to adjust the inlet filter framing system to fit a variety of inlet structures. For example, if an inlet filter framing system need to be enlarged to properly fit an inlet, the bolts securing the frame rails to the corner brackets may be adjusted to increase the dimensions of the inlet filter framing system.

The lifting rails140provide for a point to secure a lifting tool capable of lifting the configurable rectangular inlet filter framing system100in and out of an inlet basin. The configurable rectangular inlet filter framing system100may be assembled by bolting the interchangeable components together and placing the system100into an inlet. The system100may be configured, i.e. adjusted, to fit a different sized inlet by moving the bolt150to a different hole in the corner bracket110and/or the frame rail120. Alternatively, different sized frame rails120may be substituted into the system100. Other alternative embodiments of the invention provide for lifting brackets130and lifting rails140to connect perpendicular frame rails120.

Alternate embodiments of the configurable, adjustable rectangular inlet filter framing system100include corner brackets110adapted to fit a variety of inlet configurations and drainage structures. For example, the corner bracket110may only include one hanger111. Alternatively different corner brackets110may have hangers111of differing heights. The hanger111is designed to contact the perimeter of an inlet and allow the configurable rectangular inlet filter framing system100to rest primarily below grade in order to filter liquids and solids entering a drainage system. Certain rectangular inlets have a perimeter substantially at the same grade as a road. However, other rectangular inlet basins have a perimeter at the same grade as a road and also a rear portion along a curb. In one alternative embodiment, the system100will include a first two corner brackets110with hangers111and a second two corner brackets110with hangers111located6″ higher than the hangers111on the first two corner brackets. Thus, two sets of hangers111may rest on the road portion of an inlet while two other sets of hangers111may rest on the curb portion of an inlet.

FIG. 2illustrates a circular configurable inlet filter framing system200according to an embodiment of the invention. The circular configurable, i.e. adjustable, inlet filter framing system200includes circular brackets260, circular channel220, lifting rails240, and bolts250.

The circular bracket260may be comprised of one or more rigid materials, for example steel. The circular bracket260includes hangers261, lifting rail contacts262, holes264, and circular channel contact266. In a preferred embodiment, a circular bracket260comprises a circular channel contact266and a lifting rail contact262adjoined at angle263and adapted to receive a circular channel220and a lifting rail240respectively. Additionally, the circular bracket260is adjoined transversely to at least one hanger261. In a preferred embodiment, the hangers261are planar pieces of steel. Hangers261contact the edges of a circular inlet or concrete drainage structure to support the weight of the circular configurable inlet filter protection system200. The hangers261are designed to contact the perimeter of an inlet and allow the configurable circular inlet filter framing system200to rest primarily below grade in order to filter liquids and solids entering a drainage system.

Further, circular rail contact266includes a plurality of holes264. In a preferred embodiment, the holes264located through circular rail contact266have the same orientation as the holes224in circular channel220. The lifting rail contact262is a rigid structure in contact with circular channel contact266and adapted to receive a lifting rail240. In a preferred embodiment, the lifting rail contact262includes holes264with the same orientation as the holes244in lifting rail240. Additionally, a lifting rail contact262may allow for a lifting rail240to be moved in one dimension while limiting movement in two other transverse dimensions. The lifting rail contact262may comprise a steel channel adapted to receive a smaller steel channel or bar.

The circular channel220includes holes224. In a preferred embodiment, the circular channel220is comprised of steel channel rolled into circles of standard inlet opening diameters. The holes264are located diametrically through the circumference of circular channel220. The channel ends are connected at one of four circular brackets260, each of which contains two fasteners.

The lifting rail240includes a first planar surface241and holes244. The lifting rail240is preferably a rigid structure capable of being secured to one or more circular brackets260. The lifting rail240may be a steel channel or flat piece of steel. The holes244are transversely located through the first planar surface241.

The bolts250may be bolts, bolted joints, screws, screw joints, pin joints, rivets, or any other rigid fastener capable of attaching two surfaces together. Bolts250secure the components of the circular configurable, adjustable inlet filter framing system200. More specifically, four circular brackets260are bolted to circular channel220. The bolts pass through holes264of each circular channel contact266. Additionally, two lifting rails240are each bolted to two of the 4 circular brackets260.

In a preferred embodiment, the circular brackets260include a plurality of extruded holes264and are spaced 1″ apart. The circular channel220in a preferred embodiment is a rolled steel channel length with through holes224spaced 1″ apart. The bolts250are ¼-20 thread forming fasteners. The bolts250are threaded through the extruded holes264and224to secure the circular channel contact266to the circular channel220. Likewise, the lifting rail contacts262include extruded holes264. The lifting rails240are flat steel bar lengths with through holes244spaced 1″ apart. Bolts250are threaded through the extruded holes264and244to secure the lifting rail contacts262to the lifting rails240. Alternative embodiments provide for holes224and holes244with spacing other than 1″ apart.

In a preferred embodiment of the invention, the components of the circular configurable inlet filter framing system200provide for a system capable of forming or adjusting to the dimensions of a wide variety of circular inlet shapes. For example, the circular channel220may be formed to any diameter. Likewise, the lifting rails240may be formed in any length. In one example, circular configurable inlet filter framing system200is configured for a 20″ diameter inlet. The system200includes a 20″ diameter circular channel220. In order to accommodate a 24″ diameter inlet, the 20″ diameter circular channel220can be replaced by a 24″ diameter circular channel220. All other components of the system200may remain unchanged. Alternatively, the frame rails240may be replaced with longer frame rails240. In another alternative embodiment, the circular channel220may be adjustable or configurable. For example, the circular channel220may be segmented into 2 or more rolled lengths of a nominal radius. The segments may be connected and adjusted at each circular bracket260using a plurality of extruded holes264and bolts250. Furthermore, the circular channel and/or channel segments may be rolled such that portions of the circular channel220overlap. The circular configurable inlet filter framing system200may be adjusted to fit a larger diameter circular inlet by adjusting circular channel220such that amount of overlapping channel is decreased and/or effectively increasing the diameter of the circle formed by the circular channel220. Similarly, to accommodate a smaller diameter circular inlet, the reverse operation could be performed. These adjustments and configurations may be performed at the location of an inlet, even after a circular inlet framing system has already been assembled. Certain embodiments of the invention provide for adjusting the configuration of a circular inlet frame through the use of bolts, screws, pins, or rivets, etc. that pass through holes, slots, openings, etc of the inlet frame and/or bracket. These adjustments may be performed by an unskilled laborer and without welding, thereby decreasing costs and increasing efficiency.

FIG. 3illustrates a rectangular configurable inlet filter protection system300with according to an embodiment of the invention. The rectangular configurable, adjustable inlet filter protection system300is similar to the system illustrated inFIG. 1. The rectangular configurable inlet filter protection system300includes corner brackets310, frame rail channels320, lifting brackets330, lifting rail channels340, and sediment bag370.

The corner bracket310, frame rail channels320, lifting brackets330, and lifting rails340are similar to corner brackets, frame rail channels, lifting brackets, and lifting rails described elsewhere in this application.

The sediment bag370is comprised of inner layer371, outer layer372, compartment373, and opening374. The sediment bag is370is provided to limit and/or prevent pollution from entering a drainage inlet. The sediment bag370is comprised of an inner layer371and outer layer372. In a preferred embodiment, the inner layer371is a geotextile fabric filter with a typical flow rate between 140 and 200 gpm/sq yd. The inner layer371filter may be either woven or non-woven. The outer layer372is preferably a flexible polyester mesh weighing at least 4 oz/sq yd. The outer layer372may reinforce the inner layer371. Additionally the outer layer372may include bright colors, such as orange, to signal the presence of an inlet protection device.

The sediment bag370is attached to the frame of the rectangular configurable inlet filter protection system300with a stainless steel quick release style locking hose clamp. The hose clamp is threaded through compartment373and tightened. The tightened hose clamp and compartment373are supported by the channels of frame rail channels320. The stainless steel hose clamp is inserted into compartment373through opening374. The cone shaped sediment bag370is designed so as not to expand beyond the frame's perimeter, which is slightly smaller than the clear opening of the casting.

In operation, the rectangular configurable inlet filter protection system is assembled as described elsewhere in this application. Additionally, the stainless steel hose clamp is threaded through compartment373and tightened to press sediment bag370against frame rails320. The rectangular configurable inlet filter protection system300is lowered into an inlet with corner brackets310supporting the weight of the system300on a load bearing surface. When water enters the inlet and falls below grade, the water contacts the inner layer371of sediment bag370. The inner layer371filters out sediment and foreign objects while letting the runoff water pass through. As sediment is collected in the sediment bag370through the filtering process, the sediment fills up the sediment bag370. The outer layer372supports the weight of the sediment collected in the sediment bag. When a sediment bag370is full, the sediment bag may have a reduced or eliminated ability to allow water flow. The diminished water flow rate may lead to localized flooding. One of the benefits of the invention is to reduce the possibility of such flooding.

In a preferred embodiment of the invention, the inlet filter protection system provides for an overflow bypass. For example, the hanger brackets310include hanger hooks311which support the weight of the inlet filter protection by contacting the perimeter of the inlet. The rest of the of inlet filter protection system hangs below grade. The height of the corner brackets310may be configurable or adjustable. For example, the corner bracket310could be configured so that the frame rails320and sediment bag370hang either at grade or immediately below grade. In this scenario, a full sediment bag370could lead to overflow flooding. Alternatively, the height of the corner brackets310could be configured so that the frame rails320and sediment bag370hang several inches below grade. In this scenario, when the sediment bag370is full, runoff water may spill over the frame rails to enter the inlet. Although this may result in reduced filtering, the overflow bypass will eliminate or greatly reduce the possibility of flooding the areas surrounding drainage structure. This will allow roads and jobsites to completely drain, thus eliminating the hazards of standing water, icing, and/or jobsite erosion.

Additionally, the sediment bag370is designed to be reused and/or easily replaceable. The hose clamp may be loosened with a single bolt or screw, allowing for the sediment bag to be detached from the inlet filter frame. The sediment bag370may either be cleaned and reattached, or replaced with another sediment bag370.

Some inlet castings have open curb backs allowing water to bypass the main drainage grate and filter system. Certain embodiments of the invention include a sediment bag370with a curb guard flap. The curb guard flap is typically sewn to the sediment bag370and may be pulled up over the front of the curb box opening. Alternative embodiments of the curb guard flap are a stand alone assembly. The separate, stand alone curb guard flap may be partially secured under the casting grate. Other stand alone curb guard flaps may attach to the rest of the assembly with hook and loop, snaps, or other reusable fasteners. Alternatively, a stand alone curb guard flap may use magnets to secure the stand alone curb guard flap to the inlet casting. For example, two magnets sewn into corner pockets may secure the lower portion of a stand alone curb guard flap to the grade level surface on an inlet casting, while two additional corner magnets may secure the upper portion of a stand alone curb guard flap to the curb level surface of an inlet casting. Alternative embodiments may also use different numbers and locations of magnets and/or fasteners.

In a preferred embodiment of the invention, the curb guard flap utilizes magnets located within the corners of the curb guard flap to secure the curb guard flap to the inlet casting. This embodiment improves curb guard flap designs which require a large surface area to stake down or hold the curb guard flap in position to effectively cover the curb opening. In this preferred embodiment, the curb guard flap includes pockets sewn within the curb guard flap capable of storing magnets. The pocket openings may be secured, for example, by Velcro. In one example embodiment, the magnet pockets located at the corners of the curb guard flap hold 1″×1″×0.25″ corrosion resistant neodymium magnets. In other embodiments, magnets of different sizes and materials may be used. Additionally, the magnet pockets may be located elsewhere in the curb guard flap. Typically 1 magnet with approx 30 lbs holding force at each corner is required, however additional magnets may be inserted for especially long curb openings requiring additional holding force.

The curb guard flaps are constructed of 2-ply material, like the sediment bag370. The inner layer of the curb guard flap may be similar to the inner layer371of the sediment bag370. Likewise, the outer layer of the guard flap may be similar to the outer layer371of the sediment bag370. Additionally, the outer layer of the curb guard flap may be a bright orange polyester mesh, which reinforces the curb guard flap while providing notice of the inlet protection device covering the curb box opening. The brightly colored material may alert street sweepers to the presence of the curb guard flap material in order to prevent the street sweepers from contacting the curb guard flap and tearing portions away. If a street sweeper does catch the flap, the magnets will give way as a fail safe and the fabric will not be torn apart. Furthermore, the highly visible curb guard flaps may also incorporate company logos or other warnings such as “Dump No Waste—Drains to Lake.”

The sediment bag370is also designed to be used with circular inlet protection devices, such as the device shown inFIG. 2. In circular embodiments, the sediment bag370is attached to the frame of the circular configurable inlet filter framing system200with a stainless steel quick release style locking hose clamp. The hose clamp is threaded through a compartment in the sediment bag370and tightened. The tightened hose clamp and compartment373are supported by the channels of circular channels220. The sediment bag370is designed so as not to expand beyond the frame's perimeter, which is slightly smaller than the clear opening of the casting.

FIG. 4illustrates an exploded view of a modified rectangular configurable inlet filter framing system400according to an embodiment of the invention. The modified rectangular configurable inlet filter framing system400is similar to the system illustrated inFIG. 1. The rectangular configurable, adjustable inlet filter framing system400includes corner brackets410, frame rail channels420, and lifting brackets480. The corner bracket410and frame rail channels420are similar to corner brackets and frame rail channels described elsewhere in this application. Like other lifting brackets, the lifting brackets480are a rigid material secured to the frame of the inlet protection device. In a preferred embodiment, the lifting bracket480may be a formed steel channel. The lifting brackets480are used to lift an inlet protection device out of an inlet casting. The lifting brackets480are oriented in such a manner to make it easier and more efficient to remove an inlet framing device in order to empty a sediment bag. Additionally, orienting the lifting brackets480at the corners of the inlet framing device requires less material than lifting brackets spanning parallel sides of an inlet frame, thus reducing cost and weight. A lifting tool may be hooked underneath the lifting brackets480and used to remove the inlet protection device.

However, the lifting brackets480provide some differences from the lifting brackets illustrated in other figures. Unlike other lifting brackets which attach a lifting rail to two parallel frame rail channels, the lifting brackets480operate as a lifting rail while contacting two perpendicular frame rail channels420. As shown inFIG. 4, the lifting brackets480are located at two of the corners of modified rectangular configurable inlet filter framing system400. In certain embodiments, the lifting brackets480are a fixed length piece of formed steel channel. The lifting brackets may be used with varying lengths of frame rail channels420providing for configurable dimension inlet protection devices.

The lifting bracket480includes frame rail contacts482, first angle483, and second angle484. The frame rail contacts482are rigid structures at each end of the lifting bracket480and adapted to receive a frame rail420. Additionally, frame rail contact482may allow for a frame rail420to be moved in one dimension while limiting movement in two other transverse dimensions. The frame rail contact482may comprise a steel channel adapted to receive a smaller steel channel. The lifting bracket480may be formed with first angle483and second angle484. In a preferred embodiment first angle483and second angle484are equal. In alternative embodiments, first angle483and second angle484are unequal.

In a preferred embodiment, the lifting bracket480is secured to a frame rail channel420by coupling the steel channel of a frame rail channel420to the larger steel channel of a lifting bracket480. This may be achieved by sliding a frame rail channel420through a frame rail contact482. In some embodiments, the frame rail contact482may also include an extruded hole or other opening such as a slot, to allow a bolt so secure the frame rail contact482to the frame rail channel420. As in other configurable systems, the frame rail channels420and corner brackets may be interchanged, providing for a configurable rectangular inlet protection system.

FIGS. 5A,5B, and5C illustrate an improved configurable universal bracket and a configurable hanger hook500according to an embodiment of the invention. The configurable universal bracket and configurable hanger hook500may be a part of a rectangular configurable inlet filter protection system as described elsewhere in this application. The configurable universal bracket and configurable hanger hook500may adjusted by a user before or after being assembled as part of an inlet filter framing device. Additionally, the configurable hanger hook is capable of adapting to a rolled curb.

The configurable universal bracket and configurable hanger hook500as shown inFIG. 5Aincludes universal corner bracket510, frame rail channel contact515, and hanger hook orientation adjuster590.

The universal corner bracket510may be comprised of one or more rigid materials, for example steel. In a preferred embodiment, the universal corner bracket510may be used as a component in a rectangular configurable inlet protection system. As described elsewhere in the application, the corner bracket is connected to a frame rail channel at frame rail contact515. The universal corner bracket510can be used with any length of frame rail channel. Additionally, the universal corner bracket510may include a plurality of holes through which a frame rail can be connected to a universal corner bracket510. Further, the universal corner bracket510can be connected to a hanger. The hanger may be similar to other hangers described in this application. The hanger hook orientation adjuster590can be used to adjust the orientation of a hanger hook with respect to the universal corner bracket510. For example, a hanger hook may be transversely connected to a universal corner bracket510. The hanger hook may be connected to the universal corner bracket510by a screw through the hanger hook orientation adjuster590. A user may adjust the orientation of the hanger hook by adjusting the position of the screw through the hanger hook adjuster orientation590.

In operation, a configurable hanger hook591may be connected to a universal corner bracket510as shown inFIG. 5B. Configurable hanger hook591further includes hanger511and holes592. Hanger511is designed to contact an inlet or curb surface and support the weight of a configurable inlet device. Holes592are designed to accept screws, bolts or other fasteners in order to connect configurable hanger hook592to universal corner bracket510. As shown inFIG. 5B, the universal corner bracket510forms a right angle593. The configurable hanger hook592is oriented perpendicular to the plane described by right angle593. In other embodiments, angle593may be greater or less than 90 degrees.

FIG. 5Cillustrates the configurability and adjustability of configurable universal bracket and configurable hanger hook500. More specifically, the configurable hanger hook592is no longer oriented perpendicular to the plane described the right angle593. In operation, a user can adjust the angle of the configurable hanger hook592with respect to the universal corner bracket510by adjusting the connector that connects configurable hanger hook592and universal corner bracket510through holes592and hanger hook orientation adjuster590. The hanger hook may be rotated between 5 and 45 degrees with respect to the planar grade surface engaging load bearing lips of inlet castings with V-grate or gutter style configurations.

A user may wish to use a configurable inlet filter system in a variety of environments. For example, a configurable inlet filter system may initially be placed in a below grade rectangular inlet. In this scenario, the configurable hanger hooks592comprising a rectangular configurable inlet filter system may all be equal lengths and oriented perpendicular to the universal corner brackets510. A user may replace or adjust components of the configurable inlet filter system to adapt the inlet filter system to another type of inlet. More specifically, the inlet filter system residing entirely below grade may be configured to rest in an inlet on a curb. A user may replace or more configurable hanger hooks592comprising the inlet filter system with longer configurable hanger hooks592. For example, two configurable hanger hooks592may be 3 inches long and have hangers511resting at grade level. The other two configurable hanger hooks592may be 8 inches long and have hangers511resting at curb level. As shown inFIG. 5C, the configurable inlet filter system can be further adapted to fit a rolled curb. The orientation of the configurable hanger hooks592with respect to the universal corner brackets510can be adjusted such that the hangers511of the configurable hanger hooks592contact the surface of a curb. Embodiments of the configurable hanger hooks592are adapted to work with straight, curved, sloped, rolled or any other type of curb orientation.

FIGS. 6A,6B, and6C illustrate a configurable lifting tool600according to an embodiment of the invention. The configurable lifting tool600comprises a lifting bar610, eye bolts620, connectors621, and one or more lifting bars.FIG. 6Aillustrates a lifting tool600with two lifting arms630. One end of the lifting arm630is adapted to receive the connector621, while the other end of the lifting arm630forms a J-hook631. The J-hook631is adapted to catch and lift a grate covering an inlet.FIG. 6Billustrates a lifting tool600with two lifting arms640. One end of the lifting arm640is adapted to receive the connector621, while the other end of the lifting arm640forms a lift handle receiver641. The lift handle receiver641is adapted to fit a lift handle or rail on an inlet filter frame for the purpose of lifting an inlet filter system out of an inlet.

FIG. 6Cillustrates a configurable lifting tool600according to an embodiment of the invention. The configurable lifting tool600comprises a lifting bar610, eye bolts620, connectors621, and one or more lifting bars.FIG. 6Cillustrates a lifting tool600with two lifting arms630. One end of the lifting arm630is adapted to receive the connector621, while the other end of the lifting arm630forms a right angle hook632. As shown inFIG. 6C, the right angle hook632is formed with two approximately 90 degree angles. The right angle hook632is adapted to catch and lift a grate covering an inlet.

The different interchangeable lifting arms are clipped onto the lifting bar eye bolts620. The lifting arms are capable of rotating and swinging on the eye bolts at any orientation so they can grab the cross corner lift handles on any square or rectangular spread and the parallel lift rails on circular designs. The grate lifting is critical for installation and maintenance of inlet filters. The configurable lifting tool600provides several advantages over previous systems. The configurable lifting tool600may be used by one or more users to lift any grate up with two J-hooks631instead of a traditional grate puller such as a crow bar with a hook at the end. Rather than a user dragging a grate off an inlet casting with a puller, a user can lift a grate up and off an inlet with the configurable lifting tool600. Heavy rectangular grates often end up falling into the inlet when being pulled off with the traditional pullers.

FIG. 7illustrates an improved circular configurable inlet filter protection system700according to an embodiment of the invention. The circular configurable inlet filter protection system700comprises circular channel720, circular bracket760, and runoff flange798. As described elsewhere in this application, the circular bracket760may be comprised of one or more rigid materials, for example steel. The circular bracket760includes hanger761and hanger support structure768.

The runoff flange798is designed to catch runoff water from a circular configurable inlet filter framing system700with overflow protection. As shown inFIG. 7, the circular configurable inlet inlet filter framing system700includes hanger761which rests on the load bearing lips of the inlet casting to support the circular configurable inlet filter framing system700. The circular channel720which supports a sediment bag filter rests below grade at a distance approximately equal to the height of hanger support768. The distance between the hanger761and the sediment bag allows for runoff water to overflow if the sediment bag is full. However, even when the sediment bag is not full the runoff may pass between the overflow openings, bypassing the sediment bag. In the improved circular configurable inlet filter framing system700, a runoff flange798attaches to the circular channel720to prevent runoff from bypassing the sediment bag. In one embodiment of the invention, the runoff flange extends outward from the circular channel and slopes upward between a 30 and 45 degree angle. When runoff flows into the inlet, even if the runoff does not travel completely vertically downward, the runoff will be caught by the flange and funneled back down through the sediment bag. Other embodiments of the invention may incorporate other angles and orientations. The runoff flange798may be comprised of plastic or any other rigid material. In other embodiments, the runoff flange may be flexible to allow deformation while still retaining its basic shape. Additionally, the runoff flange798may be connected to the circular channel720with a screw, bolt, or other fastener.

FIG. 8illustrates an improved rectangular configurable inlet filter framing system800according to an embodiment of the invention. The rectangular configurable inlet filter framing system800comprises corner bracket810, frame rail contact815, frame rail820, bolt850, and runoff flange899. Corner bracket810further includes hanger811and hanger support structure812.

As described elsewhere in this application, the frame of the rectangular inlet filter framing system800is comprised by four frame rails820joined at four corner brackets810. In some embodiments of the invention, the frame rails820and corner brackets810may be joined by bolts850. Other embodiments of the invention may use other fasteners that allow for quick assembly and disassembly.

Similar to other embodiments of the invention, the hanger811contacts the edge of an inlet and supports the weight of the rectangular configurable inlet filter protection system800. In some embodiments, a portion of the rectangular configurable inlet filter framing system800resides below grade. For inlet filters with overflow protection, there is a vertical gap between the hanger811and the frame rail820which connects to a sediment bag. When runoff travels below grade, it may not flow directly downward. Rather, the runoff may flow in vertical and horizontal directions. In some embodiments, the horizontal component of the runoff flow may cause runoff to travel through the gap between the hanger811and the frame rail820, thus bypassing the sediment bag and causing unfiltered runoff to enter the storm sewer system. However, the embodiment illustrated inFIG. 8contains a runoff flange899capable of catching runoff traveling through the vertical gap and funneling it back downward through the sediment bag. As shown inFIG. 8, the runoff flange899extends outward and upward from the frame of the inlet filter. In some embodiments, the runoff flange899is constructed of a rigid or semi-rigid material such as plastic. Other embodiments may utilize runoff flanges899constructed of any other material capable of catching and funneling water back through the sediment bag. In one embodiment of the invention, the runoff flange899may be bolted or screwed to the frame rail820. Certain embodiments of the invention allow the runoff flange899to funnel water back to the sediment bag while still allowing for overflow when the sediment bag is full.

FIGS. 9A,9B, and9C illustrate several views of an improved rectangular configurable inlet filter protection system900according to an embodiment of the invention.FIG. 9Aillustrates an improved rectangular configurable inlet filter protection system900with a corner bracket910, frame rail920, sediment bag970, lifting bracket980, and runoff flange999. Similar to other embodiments, the rectangular frame is formed by connected frame rails920to corner brackets910. The hangers911of the corner brackets910support the weight of the rectangular frame as it rests below grade by contacting an inlet edge surface. The lifting brackets980can be used to lift the inlet filter system out of the inlet with a tool such as the configurable lifting tool described elsewhere in this application. The sediment bag970is designed to filter the runoff water. The runoff flange899is capable of funneling water back to the sediment bag970.

FIG. 9Billustrates the improved rectangular configurable inlet filter protection system900ofFIG. 9Aplaced in an inlet901. As shown inFIG. 9B, the hanger911rests upon an inlet901surface while the rest of the frame is below inlet901grade. Further, runoff flange999is adapted to prevent runoff from bypassing the sediment bag970.FIG. 9Cillustrates the addition of an inlet grate902placed upon the inlet901opening. The inlet grate902may be capable of preventing large objects, such as a person from falling into the inlet901opening. In some embodiments the inlet901and inlet grate902are made of a rigid material such as metal.

FIG. 10illustrates a sediment bag with a securing mechanism1000for use in a drainage structure filter protection system according to an embodiment of the invention. The sediment bag1070described in one embodiment may be similar to other embodiments of sediment bags described in this application. For example, the sediment bag1070may possess similar properties with the sediment bag370. The sediment bag1070may be comprised an inner and outer layer and is designed to limit and/or prevent pollution from entering a drainage inlet. In a preferred embodiment, the inner layer is a geotextile fabric filter with a typical flow rate between 140 and 200 gpm/sq yd. The inner layer filter may be either woven or non-woven. The outer layer is preferably a flexible polyester mesh weighing at least 4 oz/sq yd. The outer layer may reinforce the inner layer. Additionally the outer layer372may include bright colors, such as orange, to signal the presence of an inlet protection device.

As shown inFIG. 10, the sediment bag1070has a curb guard flap1055adapted for use with an inlet having a curbed portion. The curb guard flap1055covers the curbed portion of an inlet to filter runoff entering the curb inlet. Like other components of the sediment bag1070, the curb guard flap1055may be comprised of an inner and outer layer of material. Alternatively, the curb guard flap may be a single layer of material. Additionally, the curb guard flap1055includes components designed to secure the curb guard flap in place. For example, the curb guard flap1055includes magnet pockets1075. The magnet pockets1075are adapted to hold a magnet1078. The magnet1078is attracted to the metal of the curb inlet and secures the curb guard flap1055to a surface, i.e. the top, of the curb inlet. The magnet may be a rare earth magnet, or any other type of magnet. The magnet pocket1075may be any size and hold any size magnet, but in one embodiment, the magnet pocket1075is approximately 8 inches long. One end of the magnet pocket1075is shared with the edge of the curb guard flap1055while the other end of the magnet pocket1075is formed by stitching1076. Additionally, the edge of the magnet pocket1075shared with the edge of curb guard flap1075is secured with fastener1077. Fastener1077may be any type of fastener. In one embodiment of the invention, the fastener1077is a hook and loop type fastener such as Velcro. Other embodiments may use snaps, buttons, or any other reusable fastener. Alternatively, the fastener1077may be stitching or some other non-reusable fastener. In operation, a user may slide a magnet1078into magnet pocket1075, attach the Velcro fastener1077and place the magnet pocket1075into contact with a metal surface of an inlet.

The curb guard flap1055may include other components adapted to secure the curb guard flap1055in position over a curb inlet. For example as shown inFIG. 10, the curb guard flap1055includes a weight pocket1079. In one embodiment weight pocket1079is a two-ply segment, with an approximately nine inch wide opening at both ends of curb guard flap1055. In operation, a user may place a weight into weight pocket1079. Weight pocket1079, including the added weight would rest on a surface, i.e. the top, of an inlet in order to secure the curb guard flap1055over the inlet opening in order to filter runoff. Like the magnet1078, the weight may prevent the curb guard flap1055from being moved out of position which would limit the effectiveness of the curb guard flap1055. In one embodiment of the invention, the weight may be a 2 inch by 4 inch section of board. In other embodiments, the weight may be a rock sack or sand bag.

As shown inFIG. 10, curb guard flap1055includes curb filter1056. Curb filter1056is the portion of curb guard flap1055that covers the curb inlet opening and comes into contact with runoff flow. The curb filter1056may be similar in composition and functionality to the below grade portion of sediment bag370that comes into contact with runoff flow. For example, curb filter1056may be comprised of an inner and outer layer like the inner and outer layers of sediment bag370. In one embodiment, the curb filter1056may be approximately five and half inches high. Other embodiments of the invention provide for a curb filter1056with a height capable of covering the height of the curb inlet. Additionally, as shown inFIG. 10, the curb filter1056may extend wider than the rest of sediment bag1070. In one embodiment, each side of the curb filter1056extends three inches wider than the rest of the sediment bag1070. The sediment bag1070with a curb guard flap1055adapted for use with an inlet having a curbed portion may include alternative embodiments with other dimensions. Additionally, the embodiments of the invention may be used with rolled or non-rolled curbs.

FIGS. 11A,11B,11C, and11D illustrate a configurable lifting tool1100according to an embodiment of the invention. The configurable lifting tool1100comprises a lifting bar1110, eye bolts1120, connectors1121, and one or more lifting arms.

FIG. 11Aillustrates a lifting tool1100with lifting arm1130and lifting arm1140. One end of the lifting arm1130is adapted to receive the connector1121, while the other end of the lifting arm1130forms a right angle hook1132. The right angle hook1132is adapted to catch and lift a grate covering an inlet. In one embodiment of the invention, the distance from end to end of the lifting bar1110, as indicated by A, measures 36 inches. Further, the distance from one end of the lifting bar1110to the closest eye bolt1120, as indicated by B, measures 10 inches. The distance between eye bolts, as indicated by C, measures 16 inches. The height of the lifting tool, as measured from the top of the lifting bar1110to the bottom of the lift handle receiver1141and indicated by D, measures approximately 28.53 inches. In alternative embodiments, the length of the lifting arm may vary. For example, the lifting arm1130could have a length of 20 inches instead of 24. As a result, the height of the lifting tool, as measured by D, would measure approximately 24.53 inches. The lifting arm1130could be any height effective to lift a grate and/or an inlet out of drainage structure.

FIG. 11Billustrates further views of the lifting arms1130and1140. As shown inFIG. 11Bby E, the height of lifting arm1140measures 24 inches. Further the distance between the top of lifting arm1140and the attachment point1143, as indicated by G, measures 0.5 inches. The distance between the bottom of the lifting arm1140and the attachment point1143, as indicated by F, measures 23.5 inches. Similarly, the distance between the top of lifting arm1130and the attachment point1133, as indicated by I, measures 0.5 inches. The distance between the bottom of the lifting arm1130and the attachment point1133, as indicated by H, measures 23.5 inches. The attachment points1133and1143may be a hole or opening adapted to receive connector1121. In some embodiments, connector1121may be a carabineer style clip or any other fastener. In alternative embodiments, the length of the lifting arm may vary. For example, the lifting arm1130could have a length of 20 inches instead of 24. As a result, the distance between the bottom of the lifting arm1130and the attachment point1133, as indicated by H, measures 19.5 inches.

FIG. 11Cillustrates an additional view of lift handle receiver1141, which is adapted to fit a lift handle or rail on an inlet filter frame for the purpose of lifting an inlet filter system out of an inlet. As shown inFIG. 11C, the lift handle receiver1141contacts lifting arm1140. In some embodiments, the lift handle receiver1141may be welded to lifting arm1140. The height of lift handle receiver1141as indicated by J, measures approximately 2.26 inches. The lift handle receiver1141includes an angle, as indicated by N, of 90 degrees. The depth of lift handle receiver1141, as indicated by K, measures approximately 2.06 inches. The lift handle receive1141includes a lip1144formed at an angle indicated by M, of 65 degrees. The height of the lip1144as indicated by L, measures approximately 1.04 inches.

FIG. 11Dillustrates an additional view of right angle hook1132, which is adapted to fit a grate covering an inlet casting for the purpose of lifting a grate out of an inlet. As shown inFIG. 11D, the right angle hook1132may be a component of lifting arm1130. Alternatively, in some embodiments, the right angle hook1132may be attached to lifting arm1130. The right angle hook1132includes two angles, as indicated by Q and R, of 90 degrees. The outer depth of right angle hook1132, as indicated by S, measures approximately 7.5 inches. The inner depth of right angle hook1132, as indicated by P, measures approximately 5 inches. The right angle hook1132includes a lip1134. The height of the lip1134as indicated by O, measures approximately 2 inches.

The different interchangeable lifting arms are clipped onto the lifting bar eye bolts1120. The lifting arms are capable of rotating and swinging on the eye bolts at any orientation so they can grab the cross corner lift handles on any square or rectangular spread and the parallel lift rails on circular designs. The grate lifting is critical for installation and maintenance of inlet filters. The lifting tool1100is not limited to the above disclosed dimensions and may incorporate components of varying sizes. An alternative embodiment of the interchangeable lifting arms provides for lifting arms with a height of approximately 20 inches. A lifting arm of 20 inches rather than 24 inches may alter some or all of the measurements disclosed in the discussion ofFIGS. 11A-11D. Other embodiments of the invention are capable of working with any length lifting arm effective to lift grates and/or inlet filter framing systems.

This inexpensive system will replace the welded framework required on current Inlet Filters and offer more versatility to fit the wide array of drainage structures throughout the United States. As did the previous welded device, this frame is designed to drop into the casting opening and hang suspended on the load bearing lips of the casting beneath the drainage grate. Additionally, the inlet filter may be inserted directly into a pre-cast opening of a concrete drainage structure.

Both round and rectangular designs feature 2 lift handles at various spacing widths. Some rectangular designs with longer spans may incorporate 2 lifting rails in parallel and centered along the width, spaced 14″-16″ apart.

Other, smaller rectangular frames feature 2 convenient corner lift handles located at opposite ends and corners. The lift handles add structural reinforcement and allow for easy removal with our universal maintenance tool in any framework. The maintenance tool is a proprietary design which incorporates grate lifting hooks, thus serving 2 purposes: 1. to remove the grate easily with up to 2 people, and 2. to quickly and efficiently remove and maintain the inlet filter frame and sediment bag assembly.

Testing has shown the combination of 1/-20 bolts with our extruded stamped holes carry a strip torque of 360 in-lbs and holding (backoff) torque of 200 in-lbs on average. Single and double hangers along with universal corner brackets are offered for different rectangular shaped castings depending on available load bearing surfaces and/or grate contours. The unique design feature of this system is the hanger hook concept. These are permanently fixed on some corners, but may also be angularly rotated and positioned at various heights creating a perfect fit for rolled curb, concave, and gutter style storm castings using the universal corners. This is not possible with other “adjustable” rigid framing technology, which are designed for basic flat round or rectangular grates.

The FLeXstorm™ Inlet Filter System will allow contractors to make adjustments as needed in the field. Once a job is complete the contractor can take the re-usable filter frame to the next jobsite requirement and equip it with a new sediment bag using only a screwdriver. Contractors may also break down the components and re-assemble into a completely different model by ordering new or modifying the existing channel lengths. Parts breakdowns and assembly instructions for each inlet filter requirement are easy to follow with corner bracket holes labeled A, B, C and channel holes labeled1,2,3. All steel components are corrosion resistant (zinc plated) and stamped with the FLeXstorm™ part numbers.

The FLeXstorm™ Inlet Filter System provides several advantages over types of inlet protection devices. First, the FLeXstorm™ Inlet Filter System sits below grade and may include an overflow bypass to prevent standing water forming at the inlet. The FLeXstorm™ Inlet Filter System is easily adjustable at the jobsite by simply moving bolts and/or swapping individual components of the configurable system. The sediment bag is also designed to be easily replaceable. The stamped steel construction of the FLeXstorm™ Inlet Filter System provides several advantages over cast or welded inlet devices such as lighter weight, cheaper material cost, and drastically reduced installation times. Additionally, FLeXstorm™ Inlet Filter System is corrosion resistant. The lifting tool is adapted to remove all types of FLeXstorm™ Inlet Filter System devices as well as inlet grates. Further, the FLeXstorm™ Inlet Filter System will fit non-traditional inlets, such as castings with contours, concave or rolled curb profiles, and inlets with a limited flange area. The magnetic curb guard is simple and efficient to utilize. It allows for easy securing of the curb guard where the curb box opening is surrounded by concrete and does not require stakes or heavy items to secure. Additionally, the magnetic curb guard allows for breakaway in case of contact with a street sweeper without damaging the curb guard or inlet protection frame. Finally, the FLeXstorm™ Inlet Filter System provides for several advantages over bag-only inlet protectors. Unlike a bag-only protector which requires an inlet grate to be removed along with the full sediment bag when emptying the sediment bag the FLeXstorm™ allows for the removal of the sediment bag with a lightweight inlet protection frame. Removing a grate or inlet basin with a full sediment bag attached often requires machine assistance and multiple laborers. A FLeXstorm™ Inlet Filter System may be easily removed and installed with just one laborer.