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This invention relates to stormwater treatment, in particular to devices, apparatus, systems and methods of using a damper system to isolate a stormwater treatment structure from unwanted water inflow during servicing so that a vacuum such as vacuum truck deals with the contents of the treatment structure at the beginning of the service, where a slidable door can be sealed in place with rotatable cams pushing one side of the door against portions of the tracks, and a small pressure relief door can be used in the sliding door to allow for water pressure to equalize on both sides of the sliding door, or alternatively using removable triangular wedges to jam the door in place. 
     BACKGROUND AND PRIOR ART 
     There are federal clean water requirements that require water bodies such as lakes and rivers must meet strict minimal water quality specifications. To achieve these requirements, stormwater drainage pipes often require treatment before conveying stormwater into receiving water bodies. As a result, a wide variety of technologies have been developed to treat stormwater and improve the water quality. A common variety of stormwater treatment systems are hydrodynamic separators such as baffle type boxes and vortex systems. However, over time stormwater treatment systems often will fill with collected debris and will require service to remove the collected debris. 
     The servicing of a stormwater treatment structure typically requires the use of a vacuum truck that will suck out the collected solids and water within the structure. After the vacuum truck removes the debris and water from the stormwater structure, the vacuum truck transfers those contents to a processing facility for proper disposal. However, servicing stormwater structures is often complicated by unwanted water flow running into the stormwater structures during the service procedure. This unwanted water flow typically originates from high water levels in lakes and rivers adjacent to the treatment structure, or from an upstream base flow. 
     While the vacuum truck is removing water and debris from the treatment structure, water sometimes continues to flow in. Often the amount of water flowing into the treatment structure during servicing exceeds the rate at which the vacuum truck can remove the water. Having water enter the stormwater structure during servicing procedure reduces the effectiveness and efficiency of the service procedure and results with having the vacuum truck to dispose of additional water. 
     There have been attempts over the years to try to use a damper or gate type system, such as the aluminum slide and weir gates manufactured by Northcoast Valve &amp; Gate Inc., and slide gates manufactured by Halliday Products Inc. The common problem with damper or gate systems used in the prior art is that they are either difficult to install and use, or they leak badly. 
     Thus, the need exists for solutions to the above problems with the prior art. 
     SUMMARY OF THE INVENTION 
     A primary objective of the present invention is to provide devices, apparatus, systems and methods of using a damper system to isolate stormwater treatment structures from unwanted water inflow during servicing so that only a vacuum such as vacuum truck deals with the contents of the treatment structure at the beginning of the service. 
     A secondary objective of the present invention is to provide devices, apparatus, systems and methods of using a damper system in a stormwater treatment structure that will reduce service treatment time and increase the effectiveness of the service which will improve the removal efficiency of the treatment structure and reduce servicing costs. 
     A third objective of the present invention is to provide devices, apparatus, systems and methods of using a damper system in a stormwater treatment structure that is easy to install and use, and will not leak. 
     The novel damper system can include a track that attaches to the inside wall of a stormwater vault or treatment structure, and a damper panel that slides into the track. 
     The external housing of the stormwater vault or treatment structure is commonly made of concrete, fiberglass, or plastic. The damper system track can be installed so that it makes a kind of frame around the inflow and/or outflow pipes and is attached to the inside surface of the treatment structure. A track system can be ideally sized to accommodate the damper panel. 
     The damper panel is typically made of metal, fiberglass, or plastic, combinations thereof, and the like, can have a cam system mechanism along the vertical edges of the panel on one side. On the other side of the panel a rubber seal is continuous along the edge of the panel, going down one side, then across the bottom, and then up the other side. When the damper panel is lowered into the track system to block the pipe it is very loose and does not bind along the track system. When the cams are rotated the mechanism can then force the panel to wedge into the track and compress the rubber seal along the inside surface of the track. Once the cams have wedged the damper panel in place and the rubber seal is compressed against the track, the panel is locked in place and it will not leak water from the pipe into the stommwater vault. 
     The cams can be rotated to either lock the damper panel in place or release the damper panel. The cams can be either rotated by a lever attached to the top of the cam system, or a wrench, or other tools such as but not limited to pliers, pipes, and the like. The wrench can be either hand held or socket attached to the end of a hand held pole. The advantage of attaching the socket to the end of a long pole is that a person does not need to enter the vault to rotate the cams. 
     The damper panel can have a special lifting point attachment that allows the panel to be lowered into the track system without having to enter the vault. The lifting point would have a slot that would sized to receive an approximately 1″ diameter ball such as a metal sphere attached to the end of a thin rod, and the rod would be attached to a hand held pole. The damper panel would hang vertically on the end of the hand held pole and the geometry of the sphere in the slot would allow the damper panel to freely articulate on the end of the pole without binding. By this method the damper panel can be easily lowered into the vault and placed into the damper track. Once the damper panel is in place in the track, the sphere on the end of the pole can be slid out the bottom of slot in the lifting point attachment and the pole removed from the vault. 
     A pressure equalization door with a quick release latch can be built into the lower portion of the damper panel. When the water has been removed from the inside of the vault, water pressure from the pipe side of the damper panel will prevent the damper panel from being easily removed after servicing. To equalize the pressure on both sides of the damper panel, a small quick release door positioned near the bottom of the damper panel can be opened allowing water to pour through. A rubber seal around the edge of the equalization door can seal and prevent water from prematurely leaking around the door. A quick release latch can be used to hold the door closed. To open the door the latch can be reached either by hand or by a tool attached to the end of a hand held pole. Once the latch is opened the water pressure on the pipe side of the damper panel will push the equalization door open allowing water to flow into the vault. When the water level on each side of the damper panel is equal in elevation the damper panel can be easily removed. 
     The separate rotatable cams in each of the tracks can be replaced by single elongated cams that can have paddle or wedge shapes. Alternatively, the invention can use removable wedges that when driven into place compress and water seal the damper panel in place. 
     Further objects and advantages of this invention will be apparent from the following detailed description of the presently preferred embodiments which are illustrated schematically in the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG. 1  is a top perspective view of prior art type concrete storm water handling vault. 
         FIG. 2  is a cut-away perspective section view of the  FIG. 1  vault with novel damper system invention ready to be installed. 
         FIG. 3  is another view of the vault of  FIG. 2  with the damper system installed for shutting off water flow into the vault. 
         FIG. 4  is another view of  FIG. 3  with the damper panel assembly removed from damper frame allowing water to flow into the vault. 
         FIG. 5  is a front view of the damper system of  FIGS. 2-4  with damper panel and frame. 
         FIG. 6  is a side view of the damper system of  FIG. 5  along arrow  6 X. 
         FIG. 7  is a top view of the damper system of  FIG. 5  along arrow  7 Y with damper panel assembly locked into the damper frame. 
         FIG. 7A  is an enlarged view of the cam-lock mechanism of  FIG. 7  in locked configuration. 
         FIG. 8  is a top view of damper system of  FIG. 7  with damper panel assembly unlocked from the damper frame. Detail of cam-lock mechanism in unlocked configuration. 
         FIG. 8A  is an enlarged view of the cam-lock mechanism in an unlocked configuration. 
         FIG. 9  is a front perspective view of the damper panel system of  FIG. 5 . 
         FIG. 10  is a rear perspective view of the damper panel system of  FIGS. 5 and 9 . 
         FIG. 11  is a front perspective exploded view of the damper panel system of  FIGS. 5 and 9  with damper panel removed. 
         FIG. 12  is a rear perspective exploded view of the damper panel system of  FIG. 11  with damper panel removed. 
         FIG. 13  is a front view of the damper panel assembly used in the damper panel system of the preceding figures. 
         FIG. 14  is a side view of the damper panel assembly of  FIG. 13 . 
         FIG. 15  is a rear view of the damper panel assembly of  FIG. 13 . 
         FIG. 16  is a top view of damper panel assembly of  FIG. 13  along arrow  16 Y with cam-locks unlocked. 
         FIG. 17  is a top view of damper panel assembly of  FIG. 13  along arrow  17 Y with cam-locks locked. 
         FIG. 18  is front perspective view of the damper panel assembly of  FIG. 13 . 
         FIG. 19  is a rear perspective view of the damper panel assembly of  FIG. 18 . 
         FIG. 20  is an enlarged rear perspective partial detail view of damper panel locking system used in the damper panel assembly of  FIG. 19  in a locked configuration. 
         FIG. 21  is an enlarged rear perspective partial detail of  FIG. 20  showing the damper panel locking system in an unlocked configuration. 
         FIG. 22  is a front perspective of the damper system of the preceding figures installed into vault, with the pressure relief door about to be unlatched. 
         FIG. 22A  is an enlarged view of the pressure relief door of  FIG. 22 . 
         FIG. 23  is a front perspective view of the installed damper system of  FIG. 22  showing the unlatching of the pressure relief door, where water is flowing from the storm water inlet to equalize the pressures on both sides of the damper panel so the panel can be unlocked and removed. 
         FIG. 23A  is an enlarged view of the unlatched pressure relief door of  FIG. 23 . 
         FIG. 24  is an upper perspective view of the installed damper system where pressure on both sides of the damper panel has equalized and the locking mechanisms are now going to be unlocked for panel removal. 
         FIG. 24A  is an enlarged view of the locking mechanisms of  FIG. 24 . 
         FIG. 25  is an upper perspective view of the installed damper system where the remote socket wrench tool is used to turn the lock release hex on the top of the lock release bar. This turns the locking cams which releases the panel from the frame. 
         FIG. 25A  is an enlarged view of the socket tool and lock relief hex and bar of  FIG. 25 . 
         FIG. 26  is an upper perspective view of the installed damper system where the panel is now released from the frame and is ready to be lifted free of the frame using the remote Hook/Ring tool. 
         FIG. 26A  is an enlarged view of the remote Hook/Ring tool and panel portion of  FIG. 26 . 
         FIG. 27  is an upper perspective view of the installed damper system where the hook of the Hook/Ring tool is slipped into the panel lifting cleat. 
         FIG. 27A  is an enlarged view of the Hook/Ring tool and panel lifting cleat of  FIG. 27 . 
         FIG. 28  is an upper perspective view of the installed damper system where the panel is lifted free of the frame and full flow from the storm water inflow is restored. 
         FIG. 29  is a perspective view of the Hook/Ring tool. 
         FIG. 29A  is an enlarged view of the hook and ring portion of the tool of  FIG. 29 . 
         FIG. 30  is a side view of the Hook/Ring tool. 
         FIG. 30A  is an enlarged view of the hook and ring portion of the tool of  FIG. 30 . 
         FIG. 31  is a side view of the remote socket wrench tool. 
         FIG. 31A  is an enlarged view of the socket wrench portion of the tool of  FIG. 31 . 
         FIG. 32  is a perspective view of the remote socket wrench tool of  FIG. 31 . 
         FIG. 32A  is an enlarged view of the socket wrench portion of  FIG. 32 . 
         FIG. 33A  is a side view of a single rotatable cam embodiment. 
         FIG. 33B  is a top view of a paddle version of the single rotatable cam of  FIG. 33A  along arrow  33 B. 
         FIG. 33C  is a top view of a wedge configuration of the single rotatable cam of  FIG. 33A  along arrow  33 B. 
         FIG. 34  is a side partial cross-sectional view of an alternative removable wedge embodiment for compressing and water sealing the damper panel in the parallel tracks. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Before explaining the disclosed embodiments of the present invention in detail it is to be understood that the invention is not limited in its applications to the details of the particular arrangements shown since the invention is capable of other embodiments. Also, the terminology used herein is for the purpose of description and not of limitation. 
     A list of components will now be described.
           10 . Concrete storm water handling vault.     20 . Storm water inflow.     25 . Inlet port     30 . Storm water outflow.     35 . Outlet pipe     40 . Vault wall.     50 . Damper system.     60 . Damper panel assembly.     70 . Damper frame assembly.     71 . Through-holes for fasteners     72 . U-shaped plates     75 . Parallel tracks in frame assembly     76 . angled support plates     77 . Lower channel for damper panel     78 . Inner lip of frame     79 . Another lip of frame     80 . Panel lifting cleat.     90 . Pressure relief door.     95 . opening in panel     100 . Pressure relief door release latch.     105 . Base of latch attached to panel     110 . Damper panel.     120 . Damper panel lock release hex.     130 . Lock release bar mount.     140 . Damper panel guide bushing.     150 . Damper panel stiffener brace.     160 . Optional wrench to release panel lock.     170 . Foam sealing strip.     180 . Damper frame mounting hole.     190 . Lock release bar.     210 . Pressure relief door hinge.     230 . Optional socket wrench to release panel lock.     240 . Hook/Ring tool for remote unlatching of pressure relief door and lifting damper panel assembly from frame.     250 . Ring on item  240  for lifting latch knob to free pressure relief door.     260 . Latch knob.     270 . Storm water in vault.     280 . Storm water flows through open relief door to equalize pressure on both sides of damper panel so panel can be unlocked and lifted from frame.     290 . Foam sealing strip around relief door.     300 . Socket wrench tool for remote unlocking of panel assembly.     310 . Socket for engaging damper panel lock release hex.     330 . Steel ball to engage panel-lifting cleat.     332 . Angled hook     340 . Telescoping tube handle for remote hook/ring tool &amp; socket wrench tool.     350 . Universal joint for all angle operation of remote socket wrench tool.     360 . Damper panel cam-lock.     400 . Single elongated cam with rotatable ends     410 . pivot axis     420 . paddle shape     430 . rounded tip end     440 . wedge shape     450 . half curved tip end     500 . Removable wedge(s)     510 . pre-attached triangular wedge attached to back of damper panel     520 . removable triangular wedge     522 . actuator end     525 . release opening     528 . narrow lower tip end       

       FIG. 1  is a top perspective view of prior art type concrete storm water handling vault  10  that can have four vault walls  40  with storm water inflow coming in through an inlet port  25  into the vault  10  and eventually flow out  30  through an outlet pipe  35 . The external housing of the stormwater vault  10  or treatment structure is commonly made of concrete, fiberglass, or plastic. 
       FIG. 2  is a cut-away perspective section view of the  FIG. 1  vault  10  with novel damper system  50  invention ready to be installed to an inner wall over the inlet port  25  to the vault  10 . 
       FIG. 3  is another view of the vault  10  of  FIG. 2  with the damper system  50  installed for shutting off water flow from the inlet port  25  into the vault  10 .  FIG. 4  is another view of  FIG. 3  with the damper panel assembly  60  removed from damper frame assembly  70  allowing water  20  to flow into the vault  10  from inlet port  25 . 
     The novel damper system  50  can include a damper frame assembly  70  that can attach to the inner surface of the wall  40  about the inlet port  25  by fasteners, such as but not limited to bolts, screws, and the like. Once installed, a damper panel assembly  60  can slide into parallel tracks in the damper frame assembly  70  to close off the inlet port  25 . 
       FIG. 5  is a front view of the damper system  50  of  FIGS. 2-4  with damper panel  110  and frame assembly  70 .  FIG. 6  is a side view of the damper system  50  of  FIG. 5  along arrow  6 X. The damper panel  110  can be made from metal such as but not limited to aluminum, galvanized metal, stainless steel, fiberglass, plastic or combinations thereof. 
     Referring to  FIGS. 5-6 , through-holes  73  through the U-shaped side plates  72  of the frame assembly allow for the fasteners to be used to attach the frame assembly  70  to the inner wall  40  of the vault  10 . Angled strengthening members  76  support the U-shaped plates  72  to the tracks  75 . The damper panel  110  can slide along the parallel tracks  75  and sit against a lower channel  77 . Across the inside face of damper panel  110  is a panel lifting cleat  80 , pressure relief door  90  and pressure relief door release latch  100  which will be described in greater detail in reference to  FIGS. 22 ,  22 A,  23  and  23 A. 
       FIG. 7  is a top view of the damper system  50  of  FIG. 5  along arrow  7 Y with damper panel  110  locked into the damper frame  72 .  FIG. 7A  is an enlarged view of the cam-lock mechanism  360  of  FIG. 7  in locked configuration abutting against an inner lip  78  of the frame  72 . A damper panel stiffener brace(s)  150  can be attached across the bottom and/or the top of the damper panel  110  by fasteners, such as bolts and screws to increase the strength and stiffen the panel  110 . 
       FIG. 8  is a top view of damper system of  FIG. 7  with damper panel assembly unlocked from the damper frame  72 .  FIG. 8A  is an enlarged view of the cam-lock mechanism in an unlocked configuration. 
     Referring to  FIGS. 7 ,  7 A,  8  and  8 A, an installer can use a wrench  160  to lock and unlock the cam lock mechanism  360  by attaching the wrench  160  to a damper panel lock release hex  120 . The latter of which is attached to a lock release bar mount  130  and cam lock mechanism  360 . Rotating the wrench  160  ( FIG. 8A ) clockwise rotates the damper panel cam-lock clockwise from a locked position to an unlocked configuration. When the wrench  160  and hex nut  120  is rotated counter-clockwise, the damper panel cam-lock  360  rotates counter-clockwise from the unlocked configuration to a locked configuration. As the cam-lock  360  is moving to the locked configuration, the panel  110  is moved and shifted outward against a foam sealing strip  170  that can be located between perimeter edges of the panel  110  and another lip  79  of the frame  72 . As the sealing strip  170  is being compressed a waterproof seal forms between the panel  110  and frame assembly  70 . 
     Also shown in  FIGS. 7A and 8A , is a damper panel guide bushing  140  that fits between the lock release bar mount  130  and the inside of the frame  72 . The guide bushing  140  is useful to allow the panel  110  to slide down within the tracks  75  of the frame  72 . 
       FIG. 9  is a front perspective view of the damper panel system  50  of  FIG. 5  showing the pressure relief door  90 , pressure relief door release latch  100  and panel lifting cleat  80 . 
       FIG. 10  is a rear perspective view of the damper panel system  50  of  FIGS. 5 and 9  showing the other side of the pressure relief door  90  closing off the opening  95 , and foam sealing strip  290  about the opposite perimeter edge of the opening  95  and door  90 . 
       FIG. 11  is a front perspective exploded view of the damper panel system  50  of  FIGS. 5 and 9  with damper panel removed, where the damper panel guide bushings  140  are visible, and the foam sealing strip  170  is shown in a U-shaped pattern about the perimeter edge of the door panel  110 . 
       FIG. 12  is a rear perspective exploded view of the damper panel system  50  of  FIG. 11  with damper panel  110  removed from the frame assembly  70 , and the damper frame mounting hole(s)  180  which is equivalent to the through-holes  73  previously described.  FIG. 13  is a front view of the damper panel assembly  60  used in the damper panel system  50  of the preceding figures.  FIG. 14  is a side view of the damper panel assembly  60  of  FIG. 13 .  FIG. 15  is a rear view of the damper panel assembly  60  of  FIG. 13 .  FIG. 16  is a top view of damper panel assembly  60  of  FIG. 13  along arrow  16 Y with cam-locks  360  unlocked.  FIG. 17  is a top view of damper panel assembly  60  of  FIG. 13  along arrow  17 Y with cam-locks locked.  FIG. 18  is front perspective view of the damper panel assembly  60  of  FIG. 13 .  FIG. 19  is a rear perspective view of the damper panel assembly  60  of  FIG. 18 . 
     Referring to  FIGS. 12-21 , a pair of damper panel lock release hexes  120  can be located on adjacent to the top ends of the panel  110  of the damper panel assembly  60 . Each of the release hexes  120  can be fixably attached to lock release bars  190  that run parallel to one another. Each of the bars can be attached to the panel  110  by up to three lock release bar mounts  130 . Each of the bars  190  can include damper panel cam locks  360  fixably attached thereto, so that when the bars  190  rotate the cam locks  360  rotate. In a preferred embodiment there can be three cam locks  360  each adjacent to each of the three bar mounts  130 . 
     As previously described damper panel guide bushings  140  can be attached adjacent to the side edges of the panel  110 , and include portions (such as triangular shape) that protrude outward. In a preferred embodiment, the bushings can have a wedge shape protruding portion which allows the panel  110  to slide downward while the bushings  140  help wedge (see for example  FIG. 15 ) the panel  110  in place. 
       FIG. 20  is an enlarged rear perspective partial detail view of damper panel locking system used in the damper panel assembly  60  of  FIG. 19  in a locked configuration.  FIG. 21  is an enlarged rear perspective partial detail of  FIG. 20  showing the damper panel locking system in an unlocked configuration. 
     Referring to  FIGS. 20-21 , a socket wrench  230  (as an alternative to the wrench  160  previously described) can also be used to release the panel lock hex nut  120 . As previously described, the wrench  230  can be fit about release hex  120 . Rotating the wrench  230  counter-clockwise rotates bar  190  with fixably attached damper panel cam-lock(s)  360  counter-clockwise as well, which moves the panel  110  from a locked configuration to an unlocked configuration. Rotating the hex(s)  120  clockwise allows the cam lock(s)  360  to extend outward from the panel  110  locking the panel in place in the track  75  of the frame  71  (shown in the previous  FIGS. 7 ,  7 A,  8 ,  8 A. 
       FIG. 22  is a front perspective of the damper system  50  of the preceding figures installed against a vault wall  40 , with the pressure relief door  90  about to be unlatched.  FIG. 22A  is an enlarged view of the pressure relief door  90  of  FIG. 22  and hinge  210 .  FIG. 23  is a front perspective view of the installed damper system  50  of  FIG. 22  showing the unlatching of the pressure relief door  90 , where water  280  is flowing from the storm water inlet to equalize the pressures on both sides of the damper panel  110  so it can be unlocked and removed.  FIG. 23A  is an enlarged view of the unlatched pressure relief door  90  of  FIG. 23  with storm water  280  flows through the open relief door  90  to equalize pressure. 
       FIG. 29  is a perspective view of the Hook/Ring tool  240 .  FIG. 29A  is an enlarged view of the hook and ring portion of the tool  240  of  FIG. 29 .  FIG. 30  is a side view of the Hook/Ring tool  240 .  FIG. 30A  is an enlarged view of the hook and ring portion of the tool  240  of  FIG. 30 . The hook/ring tool  240  can include a telescoping tube handle  340  to allow for remote operation of the tool  240  by a handler so that the tool  240  can be lengthened or shortened. The lower part of the tool  240  can include a steel ball  330  projecting from a support bar  332  at an angle from the bottom of the tool  240 . A ring  250  can be angled off the bottom of the tool  240  in an opposite direction. 
     Referring to  FIGS. 22 ,  22 A,  23 ,  23 A and  29 ,  29 A,  30  and  30 A, a handler can grip the top of the telescoping handle  340  of the tool  240 . The ring  250  can be oriented to hook onto the latch knob  260  on the slidable pressure relief door release latch  100  were the latch can be slid upward in tracks on an outside of the base  105  that can be attached to the panel  110  by fasteners, such as bolts, screws, rivets, and the like. Once the lower edge  102  of the latch  100  rises above the door  90 , then the door  90  can rotate open by hinge  210 , and allow water to flow through opening  95  in the panel  110 . 
       FIG. 24  is an upper perspective view of the installed damper system  50  where pressure on both sides of the damper panel  110  of the damper panel assembly  60  has equalized after the pressure release door  90  has been opened and the locking mechanisms  120  are now going to be unlocked for removal of the panel  110 . Storm water  270  is filled inside of the vault.  FIG. 24A  is an enlarged view of the locking mechanisms  120  of  FIG. 24 . 
       FIG. 25  is an upper perspective view of the damper system  50  installed on the inner wall  40 , where the remote socket wrench tool  300  is used to turn the lock release hex  120  on the top of the lock release bar  190 . This turns the locking cams ( 360  shown rotating in  FIGS. 7 ,  7 A,  8 ,  8 A) which releases the panel  110  from the frame assembly  70 .  FIG. 25A  is an enlarged view of the socket tool  300  with universal joint for all angle operation, and socket  310  which fits over and locks damper panel lock release hex  120 . 
       FIG. 31  is a side view of the remote socket wrench tool  300  which includes a telescoping tube handle  340  that can be used for the remote socket wrench  310 .  FIG. 31A  is an enlarged view of the socket wrench portion of the universal joint  350  for all angle operation socket  310  of the tool of  FIG. 31 .  FIG. 32  is a perspective view of the remote socket wrench tool  300  of  FIG. 31 .  FIG. 32A  is an enlarged view of the socket wrench portion  310 ,  350  of  FIG. 32 . 
     Referring to  FIGS. 7 ,  7 A,  8  and  8 A,  24 ,  24 A,  25 ,  25 A,  31 ,  31 A,  32  and  32 A, rotating the socket wrench tool  300  clockwise, causes the damper panel locks  360  to move from a panel locking position of being pushed against and compressing foam sealing strip  170  to an unlocking position where the panel  110  is now loosely held in the framing assembly  70 . 
       FIG. 26  is an upper perspective view of the wall ( 40 ) installed damper system  50  where the panel  110  is now released from the frame assembly  70  and is ready to be lifted free of the frame assembly  70  using the remote Hook/Ring tool  250 .  FIG. 26A  is an enlarged view of the remote Hook/Ring tool  240  and portion of panel  110  of  FIG. 26 .  FIG. 27  is an upper perspective view of the installed damper system  50  where the hook  332  with ball tip  330  (such as an approximately 1 inch diameter metal sphere, such as a stainless steel ball, and the like) of the Hook/Ring tool is slipped into the panel lifting cleat  80 . 
       FIG. 27A  is an enlarged view of the Hook/Ring tool  240  and panel lifting cleat  80  of  FIG. 27 .  FIG. 28  is an upper perspective view of the installed damper system  50  where the panel  110  is lifted free of the frame assembly  70  and full flow from the storm water inflow  20  is restored through vault/structure inlet  25 . 
     The panel  110  and damper panel assembly  60  can be installed back into the frame assembly  70  by operating the above tools and the related components (hexes  120  and cam locks  360 ) in reverse order. 
     Although separate cams shown attached to the rotatable bars, a single rotatable cam can be used which can simultaneously push along substantially all of one perimeter side edge of the door panel. 
       FIG. 33A  is a side view of a single rotatable cam embodiment  400  having rotatable ends that can be rotated by release nut type hexes  120 , that can be used instead of the plural cam locks ( 360  shown for example in  FIGS. 12 ,  14 ,  15 ). 
       FIG. 33B  is a top view of a paddle version  420  of the single rotatable cam of  FIG. 33A  along arrow  33 B with a rounded tip end  430  opposite a pivot axis  410 .  FIG. 33C  is a top view of a wedge configuration  440  of the single rotatable cam of  FIG. 33A  along arrow  33 B with a half curved tip end  450 . Referring to  FIGS. 33A-33C , each side of the door panel  110  can have a single rotatable cam embodiment  400  so that an entire left side or an entire right side of the panel  110  can be compressed and water sealed in place by actuating the rotating of the upper end  410  of the single rotatable cam(s)  400 . 
       FIG. 34  is a side partial cross-sectional view of an alternative removable wedge embodiment  500  for compressing and water sealing the damper panel within the U-shaped plates  72  in the parallel tracks  75  on both the left and right sides of the damper panel  110 . A first wedge  510  having a triangular shape with a base on the lower end of the tracks  75  and an upper narrow tip end can be fixably attached to rear side edges of the damper panel  110 . The user can compress the damper panel  110  in place by pushing the blunt base end  522  of the removable triangular wedge  520  so that the narrow tip end  528  is on the lower end being pushed down. The two wedges  510  and  520  will compress and water seal the edges of the damper panel  110  in place. Removable wedge  520  can be removed by hooking onto opening  528  in the base end and pulling up the wedge  520  Either or both wedges  510  and  520  can be formed from solid materials such as metal, plastic and the like. Alternatively, either or both the wedges  510 ,  520  can be formed from compressible material such as rubber, elastomeric and the like, to enhance the water sealing effect of the wedges once they are installed in place. 
     In a preferred application the novel damper system can be used to isolate a stormwater treatment structure from unwanted water inflow during treatment servicing so that a vacuum such as vacuum truck deals with the contents of the treatment structure at the beginning of the service. 
     While the compressible seal has been described as elongated seal member, the seal can include a gasket member having a C or E or U type channel that compresses. The seal can also include resilient and/or elastomeric type members, and the seal can be an inflatable bladder type tube(s), and the like. Additionally, the seal can be placed along the bottom edge of the panel as well as the left and right sides of the panel. In a preferred embodiment, the seal member is placed on the opposite side of the panel from the inlet port to the vault or structure. 
     Although preferred types of tools are described, the invention can use other types of tools for opening the pressure relief door and to lift the sliding door, such as using a manhole hook tool, and the like. 
     While the latch has been described as having a knob, the latch can have a catch portion such as an indented or cut-out or lip edge, that can also be snagged or hooked to open the pressure relief door. 
     Although the invention refers to wrenches, the invention can work with lever arms that are fixably attached to the tops of the cam bars, or are removably attached as needed. 
     Although the invention is described for use with storm water treatment vaults and structures, the invention can have other applications, such as but not limited to being used in dam type applications, and the like for ponds, lakes, pools, waterfalls, and the like. 
     While the invention has been described, disclosed, illustrated and shown in various terms of certain embodiments or modifications which it has presumed in practice, the scope of the invention is not intended to be, nor should it be deemed to be, limited thereby and such other modifications or embodiments as may be suggested by the teachings herein are particularly reserved especially as they fall within the breadth and scope of the claims here appended.

Summary:
Systems, devices, apparatus, and methods of locking and unlocking a door that is slidable through tracks, over an entry port to a storm water type vault or storm water structure. Locking the door in place can be accomplished by rotating upwardly protruding bolt type heads that are fixably attached to cams. Rotating the bolt type heads causes the cams to press the door against one side of the tracks. An elongated sealing strip can be compressed between the door edges and the one side of the track and seal and prevent water from passing about the sides of the door. Alternatively, removable wedges can be used to compress door edges in place. Furthermore, a hinged pressure relief door can be attached over a small opening in the slidable door. Opening the small pressure relief door by an elongated tool allows for water on both sides of the sliding door to equalize. Once water has equalized on both sides the tool can be used to rotate the bolt type heads on the top of the slidable door and make it easier to next pull the sliding door from the tracks. The vault/structure can be sealed so that a vacuum truck can then remove water and debris contents inside of the vault/structure at the beginning of the treatment service.