Stormwater Management Plan MCU17/0014

Steps For Cartridge Replacement Maintenance

1    Depending on the particular unit, one or two utility         14   Using the appropriate lifting cap, attach the cable and
     workers and a hauling truck operator will deliver                 remove the cartridge (up to 10kgs. each) from the
     the replacement cartridges to the site. Information               vault. It is strictly prohibited to have personnel standing
     concerning how to obtain the replacement cartridges is            under suspended cartridges. Care must also be used
     available from Stormwater360.                                     to avoid damaging the cartridges during removal
                                                                       and installation. The cost of repairing components
2    If applicable, set up safety equipment to protect
                                                                       damaged during maintenance will be the responsibility
     pedestrians from fall hazards presented by open
                                                                       of the owner unless Stormwater360 is performing
     doors. Also, set up appropriate safety equipment for
                                                                       maintenance activities and damage is not related to
     work near roadways.
                                                                       discharges to the system.
3    Inspect the external condition of the unit and take
                                                                  15   Set the used cartridge aside or load onto the
     notes concerning defects/problems.
                                                                       hauling truck.
4    Open the doors to the vault and allow the system to air
                                                                  16   Repeat steps 14 to 15 until all cartridges have
     out for 5-10 minutes.
                                                                       been removed.
5    Without entering the vault, give the inside of the unit,
                                                                  17   Remove deposited sediment from the floor of the vault.
     including components, a general condition inspection.
                                                                       This can be accomplished by using the vacuum truck
6    Make notes about the external and internal condition.
                                                                  18   Once the sediments are removed, it is necessary
7    Give particular attention to recording the level of               to assess the condition of the vault, particularly
     sediment build-up on the floor of the vault and on top            the manifold and the connectors. These are short
     of the internal components.                                       sections of 2-inch schedule 50 PVC, or threaded
     Ensuring safe working procedures are met, off load the            schedule 80 PVC that should protrude above the floor
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     replacement cartridges (16-39kgs each) and set aside.             of the vault. If required, apply a light coating of FDA
                                                                       approved silicon grease to the outside of the exposed
9    Remove the top cap (threaded), upper seal and                     portion of the connectors. This ensures a watertight
     float from the cartridge. Repeat procedure for every              connection between the cartridge and the drainage
     cartridge within StormFilter vault. Place items in a large        pipe. Replace any damaged connectors.
     plastic container to be lifted form the vault.
                                                                  19   Using the boom, crane, or tripod, lower and install
10   Using a cordless drill and 8mm hex head, remove                   the new cartridges (typically 30kg for standard
     the three screws located around the top perimeter of              460 cartridges). Once again, take care not to
     the cartridge hood. Place screws in the large plastic             damage connectors.
     container and, once full or completed, remove plastic
     container from vault.                                        20   Close and fasten the access cover, and remove
                                                                       safety equipment.
11   Move the vacuum truck near the StormFilter vault
     on the down-wind side. Be sure that the truck is not         21   Make notes about the local drainage area relative
     too close to the vault so that fumes will not enter the           to ongoing construction, erosion problems, or high
     vault. Make sure that the last 500mm of the nozzle is             loadings of other materials to the system.
     approximately 100-125mm in outside diameter.                 22   Finally, dispose of the residual materials in accordance
     Feed vacuum nozzle into cartridge bay and start                   with applicable regulations. Make arrangements to
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     vacuum truck. Remove cartridge hood and place                     return the used cartridges to Stormwater360.
     nozzle directly onto filter media. Completely remove
     media from each cartridge and repeat process for
     every cartridge in vault.

13   Once completed disconnect cartridges from vault floor
     and place hood back on cartridges




                                                                                        Stormwater360 Operations and maintenance   25